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MECHANICAL
PLAQUE
CONTROL
J
E
C
T
I
V
E
S
Background
Mechanical plaque control
(a) Toothbrush
(b) Dentifrice
(c) Interdental cleaning aids
- Dental floss
- Interdental brushes
- tooth pik
(d) Oral irrigation
• IMPORTANT CHAPTER
• CLINICALLY VERY RELEVANT
• REQUIREMENT FOR PATIENT TEACHING
Plaque as etiologic factor
Experimental gingivitis study (1965 Löe et al. )
 The cause and effect relationship between
supragingival plaque and gingivitis was
demonstrated by Loe et al (1965).
 When plaque was allowed to accumulate, gingivitis
developed within 21 days. When plaque control was
initiated, the gingivitis was reversed (by means of
efficient plaque control, i.e., brushing and flossing)
to clinical gingival health
 The removal of microbial plaque leads to cessation
of gingival inflammation, and cessation of plaque
control measure leads to recurrence of
inflammation
The removal of plaque also decreased the
rate of formation of calculus. ( Sanders , 1962)
Thus eliminating plaque is the key to prevent
the occurrence of periodontal disease or
halting the progression of the disease.
Masses of plaque first develop
( Lang,1973)
MOLAR &
PREMOLAR
AREAS
PROXIMAL
SURFACES OF
THE ANTERIOR
TEETH
FACIAL
SURFACES OF
THE MOLARS &
PREMOLARS
PLAQUE CONTROL
 Plaque control: The removal of dental plaque on
a regular basis and the prevention of its
accumulation on the teeth and adjacent gingival
surfaces.
 Position: supra- & sub-gingival plaque control
 Methods: mechanical & chemical
MECHANICAL PLAQUE CONTROL
OBJECTIVE:
Complete Daily Removal Of Dental Plaque
With A Minimum Of
Effort,
Time,
And Devices,
Using The Simplest Methods Possible.
Self-performed
1. Tooth brushing
2. Interdental aids
– Dental floss and tape
– Toothpicks
– Interproximal brushes
– Single-tufted brush
3. Adjunctive aids
– Dental irrigation devices
– Tongue scrapers
– Dentifrices
TOOTH BRUSH
A. Toothbrush Design
B. Methods of toothbrushing
C. Frequency and effectiveness of
toothbrushing
D. Toothbrush wear and replacement
E. Electric toothbrushes
The Toothbrush
 First “toothbrush” -
15th Century in China
 First modern
toothbrush - England in
1780 by William Addis
– mass produced
The Toothbrush
 Nylon toothbrush bristles -
1938 in USA (Du Pont)
 First electric toothbrush -
1960s (Broxodent)
 1987 – first rotary action
electric toothbrush
•
- Generally toothbrushes vary in
size, design as well as in length
and arrangements of bristles
hardness.
- To overcome this variation ADA
given specification of
toothbrushes.
-------------------------------------------------
The Toothbrush
Toothbrush design
American Dental Association (ADA)
›Length : 1 to 1.25 inches
›Width : 5/16 to 3/8 inches
›Surface area : 2.54 to 3.2 cm
›No. of rows : 2 to 4 rows of brushes
›No. of tufts : 5 to 12 per row
›No. of bristles : 80 to 85 per tuft
Toothbrush bristles
• Natural: hog
• Artificial filaments:
nylon
NATURAL ARTIFICIAL
Source Hair of hog/ wild boar Synthetic, plastic material
mainly nylon
Uniformity Non uniform Uniform
Diameter Varies Extra soft: 0.075mm
Hard: 0.3 mm
End shape Irregular Rounded
Limitations Standardization not
possible
Wear: rapid & irregular
Collection of debris &
microorganisms due to
hollow ends
Cleaning, rinsing and
maintenance easy
Wear: Durable
Repels debris: end rounded
Resistant to accumulation
of microraganisms
Bristle hardness
Proportional to the square of the
diameter and inversely proportional to
the square of bristle length
Soft brush: 0.007 inch(0.2 mm)
Medium brush: 0.012 inch(0.3 mm)
Hard brush: 0.014 inch(0.4 mm)
For most patients:
 short-headed brushes
 with straight-cut,
 round-ended,
 soft to medium
 nylon bristles
 arranged in three or four rows of tufts
ARE RECOMMENDED.
TOOTH BRUSHING TECHNIQUES
• Various toothbrushing technique have
achieved acceptance by the dental profession.
• Each technique has been designed to achieve
a definite goal.
• Depending on the individual cases, the
techniques of toothbrusing may have to be
altered to achieve the maximum beneficial
effects.
The efficacy of brushing with regard to
plaque removal is dictated by three
main factors:
The design of the brush
The skill of the individual using the
brush
The frequency and duration of use
Effects and sequel of the
incorrect use of toothbrush
SEQUEL REASON
Gingival
erosion
Toothbrush
stiffness
Gingival
recession
Method of
brushing
Gingival
abrasion
Brushing
frequency
Toothbrushing methods
1. Horizontal brushing (scrub)
2. Leonard method (vertical)
3. Bass method (Sulcular cleaning)
4. Modified Bass methods
5. Stillman methos (vibratory)
6. Modified Stillman method (roll)
7. Charters method
8. Methods of cleaning with powered
toothbrushes
How to brush?
 Patient is instructed to start with molar region of one arch
around the opposite side than continue back around the
lingual or facial surfaces of the same arch
 Last surface to be brushed are occlusal.
 Patient instructed to stroke each area ten time or spend 10
seconds per area then move on to next area.
 Time : 2 minutes ( 30 sec per quadrant )
Method Bristle placement Motion Advantage/
disadvantage
Scrub Horizontal on gingival margin Scrub in anterior position
direction keeping brush horizontal
Easy to learn & best suited
for children
BASS Apical towards gingival into sulcus
at 450 to tooth surface
Short back and forth vibratory
motion while bristles remain in
sulcus.
Cervical plaque removal
Easily learned
Good gingival stimulation
Charter's Coronally 45o, sides of bristles half
on teeth and half of gingiva
Small circular motions with apical
movements towards gingival
margin
Hard to learn and position
brush
Clears inter proximal
Gingival stimulation
Fones Perpendicular to the tooth With teeth in occlusions, move
brush in rotary motion over both
arches and gingival margin
Easy to learn
Inter proximal areas not
cleaned
May cause trauma
Roll Apically, parallel to tooth and then
over tooth surface
On buccal and lingual inward
pressure, then rolling of head to
sweep bristle over gingiva & tooth
Doesn't clean sulcus area
Easy to learn
good gingival stimulation
Stillman'
s
On buccal and lingual, aplically at
an ablique angle to long axis of
tooth. Ends rest on gingiva and
cervical part.
On buccal and lingual slight rotary
motions with bristle ends
stationary
Excellent gingival
stimulation
Moderate dexterity
required
Moderate cleaning of
interproximal area
Modified
stillman's
Pointing apically at and angle of 45o
to tooth surface
Apply pressure as in stillmans's
method but vibrate brush and also
move occlusally
Easy to master
Gingival stimulation
Method Bristle placement Motion Advantage/
disadvantage
Scrub Horizontal on gingival margin Scrub in anterior position
direction keeping brush horizontal
Easy to learn & best suited
for children
BASS Apical towards gingival into sulcus
at 450 to tooth surface
Short back and forth vibratory
motion while bristles remain in
sulcus.
Cervical plaque removal
Easily learned
Good gingival stimulation
Charter's Coronally 45o, sides of bristles
half on teeth and half of gingiva
Small circular motions with apical
movements towards gingival
margin
Hard to learn and
position brush
Clears inter proximal
Gingival stimulation
Fones Perpendicular to the tooth With teeth in occlusions, move
brush in rotary motion over both
arches and gingival margin
Easy to learn
Inter proximal areas not
cleaned
May cause trauma
Roll Apically, parallel to tooth and then
over tooth surface
On buccal and lingual inward
pressure, then rolling of head to
sweep bristle over gingiva & tooth
Doesn't clean sulcus area
Easy to learn
good gingival stimulation
Stillman's On buccal and lingual, aplically at
an ablique angle to long axis of
tooth. Ends rest on gingiva and
cervical part.
On buccal and lingual slight
rotary motions with bristle ends
stationary
Excellent gingival
stimulation
Moderate dexterity
required
Moderate cleaning of
interproximal area
Modified
stillman's
Pointing apically at and angle of
45o to tooth surface
Apply pressure as in stillmans's
method but vibrate brush and
also move occlusally
Easy to master
Gingival stimulation
Charters method
Bass method
Tooth Brushing
Three methods widely accepted: the
modified bass method, the modified stillman
method( stillman 1932), and the charters
method( Carter’s 1948) .
Controlled studied evaluating the most
common brushing technique have shown
that no one method is superior
Recommended is Bass technique , because it
BASS OR SULCUS
CLEANING METHOD
Most accepted and effective method for the
removal of dental plaque present adjacent
to and underneath the gingival margin.
• INDICATIONS
 interproximal areas
 cervical areas beneath the height of
contour of enamel.
 exposed root surfaces.
TECHNIQUE
 The bristles are placed at a 45 degree angle to
the gingiva and moved in small circular motions.
 Strokes are repeated around 20 times,3 teeth at
a time.
 On the lingual aspect of the anterior teeth, the
brush is pressed into the gingival sulci and
proximal surfaces at a 45 angle.
 The bristles are then activated.
 Occlusal surfaces are cleaned by pressing the
bristles firmly and then activating the bristles.
Bass method
ADVANTAGES
• Effective method for removing plaque.
• Provides good gingival stimulation.
DISADVANTAGES
• Injury to the gingival margin.
• Time consuming.
• Dexterity.
MODIFIED BASS TECHNIQUE
• INDICATION:
• As a routine oral hygiene measure
• Intrasulcular cleansing.
TECHINIQUE
• Vibratary and circular movements with
sweeping motion
• Bristles are at 45 to the gingiva
• Bristles are swept over the sides of the teeth
towards their occlusal surfaces in a single
stroke.
ADVANTAGES
• EXCELLENT SULCUS CLEANING.
• GOOD INTER PROXIMAL AND GINGIVAL
CLEANING.
• GOOD GINGIVAL STIMULATION
DISADVATAGES
• DEXTERITY
MODIFIED STILLMAN’S TECHNIQUE
INDICATIONS
• DENTAL PLAQUE REMOVAL
• CLEANING TOOTH SURFACES AND GINGIVAL
MASSAGE .
DISADVANTAGE
• TIME CONSUMING
• DAMAGE EPITHELIAL ATTACHMENT.
TECHNIQUE
• Bristles are pointed apically with an oblique
angle to the long axis of the tooth
• Bristles placed on the cervical aspect of the
teeth
• Short back and forth motion moved in a
coronal direction.
CHARTER’S METHOD
INDICATIONS:
• Persons having :-
• Missing papilla and exposed root surfaces.
• FPD and Orthodontic appliances.
• Periodontal surgery.
• Interproximal gingival recession.
TECHNIQUE
• A soft/medium multi-tufted tooth brush
taken
• Bristles are placed 45 to the gingiva with
bristles directed coronally.
• Mild vibratory strokes required with bristles
ends lying interproximally.
ADVANTAGES
• Massage and stimulation of gingiva.
DISADVANTAGES
• Poor removal of subgingival bacterial
accumulations.
• Limited brush placement.
• Requirements in digital dexterity are high.
 The use of hard toothbrush ,
vigorous horizontal brushing,
the use of extremely
abrasive dentifrices may
lead to cervical abrasion of
teeth and recession of the
gingiva.( Jepson ,1998)
 Toothbrushes need to be
replaced every 3 months
The Toothbrush
The Toothbrush
Soft, nylon bristle toothbrush
• clean effectively (when used properly),
• remain effective for a reasonable time ,
• Soft bristle are more flexible and atraumatic
• clean beneath the gingival margin,
• reach farther into the proximal tooth surfaces.
Lecture II
Col area
EMBRASURE
• V-shaped spillway next
to the contact area of
adjacent teeth;
• Narrowest at the
contact and widening
toward the facial,
lingual, and occlusal
contacts
Powered toothbrushes
Invented in 1939.
Motions:
Back and forth
Circular
Elliptic
Combinations
Cleaning action by:
1. Mechanical contact between the
bristles and the tooth
2. Low-frequency acoustic energy
generates dynamic fluid movement and
provides cleaning slightly away from the
bristle tips.
INDICATIONS:
1. Children and adolescents
2. Children with physical or mental disabilities
3. Hospitalized patients, including older adults
who need to have their teeth cleaned by
caregivers
4. Patients with fixed orthodontic appliances.
• Patients who can develop the ability to
use a toothbrush properly usually do
equally well with a manual or a powered
toothbrush.
• Less diligent brushers do better with
powered tooth brushes, which generate
stroke motions automatically and require
less operator effort.
DENTIFRICES
Aids in cleaning and polishing
tooth surfaces.
Composition:
1. Abrasives- silicon oxides, aluminum oxide
2. Humectants
3. Water
4. Soap or detergent
5. Flavoring and sweetening agents
6. Therapeutic agents such as fluorides and
pyrophosphates
7. Coloring agents and preservatives.
The term dentifrice is derived
from dens (tooth) and fricare (to
rub).
A simple, contemporary
definition of a dentifrice is a
mixture used on the tooth in
conjunction with a toothbrush.
55
Dentifrices are marketed as
Toothpowders
Toothpastes
Gels
Original purpose:
• Pleasant taste
• Cosmetic effect
• Remove extrinsic stains
Abrasives
Degree of abrasive hardness depends
on:
• inherent hardness of the abrasive
• size of the abrasive particle
• shape of the particle
Other variables:
• the brushing technique
• pressure on the brush
• the hardness of the bristles
• the direction of the strokes
• number of strokes
Abrasives used:
• Calcium carbonate
• calcium phosphate
• baking soda (sodium bicarbonate)
• Silicas
• silicon oxides
• aluminum oxides
Humectants
• Toothpaste consisting only of a toothpowder
and water results in a product with several
undesirable properties.
• Over time, the solids in the paste tend to
settle out of solution and the water
evaporates.
• This may result in caking of the remaining
dentifrice.
• To solve this problem, humectants were
added to maintain the moisture.
• Commonly used humectants are:
• Sorbitol,
• Mannitol,
• Propylene glycol
• Advantages:
1. Long shelf life
2. Maintained moisture content
3. Nontoxic
• Disadvantages
1. Mold or bacterial growth can occur in their
presence
Soaps
• Logical cleansing agent.
• The toothbrush bristles dislodge food
debris and plaque
• The foaming action of the soap aids in
the removal of the loosened material.
• Disadvantages of soaps:
1. irritating to the mucous membrane
2. flavor is difficult to mask
3. often causes nausea
4. soaps are incompatible with other
ingredients, such as calcium.
Detergents
• Substitute to soaps
• sodium lauryl sulfate (SLS) is the most widely
used detergent
• Advantages of SLS:
1. Stable
2. Possesses some antibacterial properties
3. Has a low surface tension which facilitates
the flow of the dentifrice over the teeth
4. Active at a neutral ph
5. Flavor is easy to mask
6. Compatible with the current dentifrice
ingredients
Flavoring and Sweetening
Agents
• Flavor, along with smell, color, and
consistency of a product, are important
characteristics that lead to public acceptance
of a dentifrice.
• The flavor must be:
pleasant,
provide an immediate taste sensation,
relatively long-lasting
• Synthetic flavors are blended to provide the
desired taste.
• Spearmint,
• peppermint,
• wintergreen,
• cinnamon,
• other flavors give toothpaste a pleasant taste,
aroma, and refreshing aftertaste
Sweetening Agents
• In early toothpaste formulations, sugar,
honey, and other sweeteners were used.
• DISADVANTAGE: these materials can be
broken down in the mouth to produce acids
and lower plaque pH, they may increase
caries RISK.
• Replaced with:
Saccharin,
Cyclamate,
Sorbitol,
Mannitol
• Sorbitol and mannitol serve a dual role as
sweetening agents and humectants.
• Glycerin also serves as a humectant, adds to
the sweet taste.
• A new sweetener in some dentifrices is xylitol.
SPECIFIC DENTIFRICES:
Essential-Oil Dentifrices
• The essential-oil ingredients found in
Listerine mouth rinse are also available in a
dentifrice formulation.
• The clinical and laboratory data suggest a
benefit to gingival health and plaque
reduction
• This product does not carry theADA Seal of
Acceptance
Therapeutic Dentifrices
• The most commonly used therapeutic agent
added to dentifrices is fluoride, which aids in
the control of caries.
• OTC: The original level of fluoride -restricted
to 1,000 to 1,100 ppm fluoride
• total of no more than 120 mg of fluoride in the
tube
• Requirement that the package include a
safety closure.
• Therapeutic toothpastes, dispensed on
prescription, could contain up to 260 mg of
fluoride in a tube.
• OTC safe levels:
• 0.22% sodium fluoride (NaF) at a level of
1,100 ppm,
• 0.76% sodium monofluorophosphate (MFP) at
a level of 1,000 ppm,
• 0.4% stannous fluoride (SnF2) at a level of
1,000 ppm.
• Fluoride levels were increased to 1,500 ppm
sodium monofluorophosphate in "Extra
Strength Aim," marketed OTC.
• In published studies, this product was 10%
more effective than an 1,100 ppm NaF
dentifrice.
• A recently introduced prescription dentifrice,
Colgate Prevident contains 5,000-ppm
Stannous Salts
• Stannous fluoride (SnF2), specifically the
stannous ion, has reported activity against
caries, plaque, and gingivitis.
• While SnF2 has a long record as an anticaries
agent, long-term stability in dentifrices and
mouthrinses has been questioned since
clinical antimicrobial activity has only been
demonstrated in anhydrous state.
Triclosan
• Triclosan is a broad-spectrum antibacterial
agent
• It is effective against wide variety of bacteria
• A review of the available pharmacological and
toxicological information
• Triclosan can be considered safe for use in
dentifrice and mouth rinse products.
Anticalculus Dentifrices
• Interrupt the process of mineralization of
plaque to calculus.
• Plaque has a bacterial matrix that mineralizes
due to the super saturation of saliva with
calcium and phosphate ions.
• Crystal growth inhibitors may be added to
dentifrices to provide a reduction in calculus
formation.
Antihypersensitivity Dentifrices
Active agents such as:
• potassium nitrate,
• strontium chloride,
• sodium citrate
Whiteners
• Controversial
• These dentifrices control stain via physical
methods (abrasives) and chemical
mechanisms (surface active agents or
bleaching/oxidizing agents).
LECTURE 3
Interdental cleaning aids
• Dental floss
• Interdental brushes
• Wooden or rubber tips
Embrasures
• Gingival embrasure space: a small triangular
open space
• V-shaped spillway next to the contact area of
adjacent teeth
• Gingival embrasure space evaluation is critical
in determining which aid will provide the most
accurate biofilm control.
TYPE I
• Embrasure is filled completely by interdental
papilla.
• Dental floss is effective
TYPE II
• The height of interdental papilla is reduced.
• Interdental brushes and wooden toothpicks
are effective.
TYPE III
• The interdental papilla is missing.
• Interdental brushes and end-tuft brushes are
effective.
PLANNING INTERDENTAL CARE
• PATIENT HISTORY OF ORAL HYGIENE
• DENTAL AND GINGIVAL ANATOMY
• PLAQUE SCORES
• SELECTION OF INTERDENTAL AIDS
DENTAL FLOSS
• Levi Spear Parmly
• REMOVES DENTAL BIOFILM
• REDUCES INTERPROXIMAL BLEEDING
• EFFICIENT IN TYPE I EMBRASURES
TYPES OF DENTAL FLOSS
• Multifilament vs. monofilament
• Twisted vs. untwisted
• Bonded vs. unbonded
• Waxed vs. unwaxed
• Monofilament: resists breakage or shredding
when passed over irregular tooth surfaces,
restorations or calculus deposits.
• Waxed: gives strength and durability during
application.
• Shredding and breakage is rare
Materials:
• Silk: loosely twisted, waxed
• Nylon: multifilaments, waxed/ unwaxed
circular (floss) or flat (dental tape)
• Expanded PTFE: monofilament, waxed
Floss Available
• Flattened floss is designed to increase the
contact surface with the tooth.
• Ultra floss is spongy and soft.
• Round floss is relatively thinner.
• Superfloss contains segments of stiffened-end
threader, spongy floss and regular floss.
• Stiffened-end threader can make it easier to
slide the superfloss through the gap between
the teeth and fixed orthodontic appliances.
• Spongy floss cleans around the appliances and
between wide spaces or to floss underneath
the bridge.
• Regular floss removes plaque from the
adjacent tooth surfaces.
How to Floss:
Using 18 inches
of dental floss,
wrap it lightly
around middle
fingers.
Firmly grasp
the dental floss
with index
fingers.
Forming a C-
shape, carefully
slide the floss
up and down
between tooth
and gum line.
Gently slide the
floss in between
both sides of
teeth and
repeat until
finished.
Common Mistakes:
• Not placing the floss under the gum line - Not
placing dental floss carefully under the gum line, the
area where plaque accumulation occurs most, will
not be as effective
in the prevention of dental decay and periodontal
disease.
• Rushing when flossing the teeth - One cannot
perform proper flossing when rushing
through the procedure of removing plaque. One
should take at least 2-3 minutes when flossing.
Misconception:
• Flossing is not just supposed to remove food
particles from between teeth.
• The primary function of dental floss is to
remove the invisible film of bacteria that
constantly forms between teeth i.e. plaque.
Flossing should be performed between each
tooth.
INTERDENTAL BRUSH
• Open embrasure spaces
• Type II & III
• Root concavities
Root Concavities
• They are trenchlike depression in the root
surface.
• In health, root concavities are covered with
alveolar bone.
• In periodontitis, junctional epithelium
migrates apically with bone and tissue
destruction, exposing the root concavity to
the oral environment.
Interdental brush
Steps for Use of
the Interdental Brush
• Hold brush handle between the thumb and the index
finger
• Gently insert between teeth
• Maintain brush at a 90-degree angle to the long axis
of the tooth
• Use slight pressure to adapt brush
• Slide brush in and out of the space
• Adapt brush to the mesial surface of the first
premolar
• For posterior areas, advise the patient to close his or
her mouth slightly to relax the cheek.
• It is helpful to bend the brush to facilitate insertion.
Single tufted brush
• A single tuft or group of small tufts, may be 3-6 mm
in diameter
• Flat or tapered
• Handle : straight or contra- angled
Indications:
• Type II embrasures
• Fixed dental prosthesis
• For difficult to reach
areas
INTERDENTAL TIP
• Conical or pyramidal flexible rubber tip attached to
the end of the handle of a toothbrush.
• Soft, pliable rubber tip: adapted to the interdental
area and below gingival margin
• Does not cause damage to epithelial lining.
INDICATIONS:
• Interdental embrasure type II
• Plaque removal at or just below the gingival margin.
WOODEN TIP
• Wooden cleaner is a 2 inch long device
• Made of:
basswood
birch wood
• It is triangular in cross section
• Indication: type III embrasure
GINGIVAL MASSAGE
• Advantages:
Epithelial thickening,
increased keratinization,
increased mitotic activity in epithelium and
connective tissue
alteration or removal of plaque
Oral irrigation devices
• Supragingival
irrigation
• Subgingival
irrigation
Supragingival vs. Subgingival
Irrigation
• The objective of supragingival irrigation is to
diminish gingival inflammation by disrupting
biofilms coronal to the gingival margin.
The goal of subgingival irrigation is to reduce
the number of bacteria in the periodontal
pocket space.
Dental Water Jet
• Device that delivers pulsed irrigation of water
or other solution supragingivally and
subgingivally
• Also known as dental water irrigator, home
irrigator, water flosser
Mechanism of Action
• Delivers a pulsating fluid that incorporates a
compression and decompression phase
• This creates two zones of fluid movement
called hydrokinetic activity.
• Impact zone—initial fluid contact with an
area of the mouth
Flushing zone—depth of fluid penetration
within a subgingival sulcus or periodontal
pocket
Benefits of Home Irrigation
• Biofilm removal
• Bleeding reduction
• Gingival inflammation reduction
• Periodontal pathogens reduction
• Reduction in inflammatory and destructive
host response
Indications for Recommendation
• Individuals on periodontal maintenance
• Individuals who are noncompliant with dental
floss
• Individuals with special needs
• Individuals with dental implants
• Individuals with diabetes
• Individuals with orthodontic appliances
Precautions:
• Incidence of bacteremia is similar to other oral
healthcare devices.
• Before recommending a water jet to a patient
who is at high risk for infective endocarditis,
dental healthcare providers should consider
both the patient's overall medical and oral
health status.
• Consultation with a physician is advisable for
Irrigating Solutions
• Water
• Antimicrobial
solutions
Chlorhexidine
Essential oils
Other solutions
TONGUE CLEANING
• Daily tongue cleaning removes pathogenic
bacteria on the dorsum surface.
• Reduces bacteria in the saliva
• Improves taste sensation
• Reduces halitosis
• Removes volatile sulfur compounds, which are
gases that cause halitosis
• Manual tongue
cleaners come in a
variety of styles.
Toothbrush with a
thin head
Tongue scrapers
All types are
designed to allow
patients to reach the
Any QUESTIONS????

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lecture 10.12.14.ppt

  • 2. J E C T I V E S Background Mechanical plaque control (a) Toothbrush (b) Dentifrice (c) Interdental cleaning aids - Dental floss - Interdental brushes - tooth pik (d) Oral irrigation
  • 3. • IMPORTANT CHAPTER • CLINICALLY VERY RELEVANT • REQUIREMENT FOR PATIENT TEACHING
  • 4.
  • 5. Plaque as etiologic factor Experimental gingivitis study (1965 Löe et al. )
  • 6.  The cause and effect relationship between supragingival plaque and gingivitis was demonstrated by Loe et al (1965).  When plaque was allowed to accumulate, gingivitis developed within 21 days. When plaque control was initiated, the gingivitis was reversed (by means of efficient plaque control, i.e., brushing and flossing) to clinical gingival health  The removal of microbial plaque leads to cessation of gingival inflammation, and cessation of plaque control measure leads to recurrence of inflammation
  • 7. The removal of plaque also decreased the rate of formation of calculus. ( Sanders , 1962) Thus eliminating plaque is the key to prevent the occurrence of periodontal disease or halting the progression of the disease.
  • 8. Masses of plaque first develop ( Lang,1973) MOLAR & PREMOLAR AREAS PROXIMAL SURFACES OF THE ANTERIOR TEETH FACIAL SURFACES OF THE MOLARS & PREMOLARS
  • 9. PLAQUE CONTROL  Plaque control: The removal of dental plaque on a regular basis and the prevention of its accumulation on the teeth and adjacent gingival surfaces.  Position: supra- & sub-gingival plaque control  Methods: mechanical & chemical
  • 10.
  • 11. MECHANICAL PLAQUE CONTROL OBJECTIVE: Complete Daily Removal Of Dental Plaque With A Minimum Of Effort, Time, And Devices, Using The Simplest Methods Possible.
  • 12. Self-performed 1. Tooth brushing 2. Interdental aids – Dental floss and tape – Toothpicks – Interproximal brushes – Single-tufted brush 3. Adjunctive aids – Dental irrigation devices – Tongue scrapers – Dentifrices
  • 13. TOOTH BRUSH A. Toothbrush Design B. Methods of toothbrushing C. Frequency and effectiveness of toothbrushing D. Toothbrush wear and replacement E. Electric toothbrushes
  • 14. The Toothbrush  First “toothbrush” - 15th Century in China  First modern toothbrush - England in 1780 by William Addis – mass produced
  • 15. The Toothbrush  Nylon toothbrush bristles - 1938 in USA (Du Pont)  First electric toothbrush - 1960s (Broxodent)  1987 – first rotary action electric toothbrush •
  • 16. - Generally toothbrushes vary in size, design as well as in length and arrangements of bristles hardness. - To overcome this variation ADA given specification of toothbrushes. ------------------------------------------------- The Toothbrush
  • 17. Toothbrush design American Dental Association (ADA) ›Length : 1 to 1.25 inches ›Width : 5/16 to 3/8 inches ›Surface area : 2.54 to 3.2 cm ›No. of rows : 2 to 4 rows of brushes ›No. of tufts : 5 to 12 per row ›No. of bristles : 80 to 85 per tuft
  • 18. Toothbrush bristles • Natural: hog • Artificial filaments: nylon
  • 19. NATURAL ARTIFICIAL Source Hair of hog/ wild boar Synthetic, plastic material mainly nylon Uniformity Non uniform Uniform Diameter Varies Extra soft: 0.075mm Hard: 0.3 mm End shape Irregular Rounded Limitations Standardization not possible Wear: rapid & irregular Collection of debris & microorganisms due to hollow ends Cleaning, rinsing and maintenance easy Wear: Durable Repels debris: end rounded Resistant to accumulation of microraganisms
  • 20. Bristle hardness Proportional to the square of the diameter and inversely proportional to the square of bristle length Soft brush: 0.007 inch(0.2 mm) Medium brush: 0.012 inch(0.3 mm) Hard brush: 0.014 inch(0.4 mm)
  • 21. For most patients:  short-headed brushes  with straight-cut,  round-ended,  soft to medium  nylon bristles  arranged in three or four rows of tufts ARE RECOMMENDED.
  • 22. TOOTH BRUSHING TECHNIQUES • Various toothbrushing technique have achieved acceptance by the dental profession. • Each technique has been designed to achieve a definite goal. • Depending on the individual cases, the techniques of toothbrusing may have to be altered to achieve the maximum beneficial effects.
  • 23. The efficacy of brushing with regard to plaque removal is dictated by three main factors: The design of the brush The skill of the individual using the brush The frequency and duration of use
  • 24. Effects and sequel of the incorrect use of toothbrush SEQUEL REASON Gingival erosion Toothbrush stiffness Gingival recession Method of brushing Gingival abrasion Brushing frequency
  • 25. Toothbrushing methods 1. Horizontal brushing (scrub) 2. Leonard method (vertical) 3. Bass method (Sulcular cleaning) 4. Modified Bass methods 5. Stillman methos (vibratory) 6. Modified Stillman method (roll) 7. Charters method 8. Methods of cleaning with powered toothbrushes
  • 26. How to brush?  Patient is instructed to start with molar region of one arch around the opposite side than continue back around the lingual or facial surfaces of the same arch  Last surface to be brushed are occlusal.  Patient instructed to stroke each area ten time or spend 10 seconds per area then move on to next area.  Time : 2 minutes ( 30 sec per quadrant )
  • 27. Method Bristle placement Motion Advantage/ disadvantage Scrub Horizontal on gingival margin Scrub in anterior position direction keeping brush horizontal Easy to learn & best suited for children BASS Apical towards gingival into sulcus at 450 to tooth surface Short back and forth vibratory motion while bristles remain in sulcus. Cervical plaque removal Easily learned Good gingival stimulation Charter's Coronally 45o, sides of bristles half on teeth and half of gingiva Small circular motions with apical movements towards gingival margin Hard to learn and position brush Clears inter proximal Gingival stimulation Fones Perpendicular to the tooth With teeth in occlusions, move brush in rotary motion over both arches and gingival margin Easy to learn Inter proximal areas not cleaned May cause trauma Roll Apically, parallel to tooth and then over tooth surface On buccal and lingual inward pressure, then rolling of head to sweep bristle over gingiva & tooth Doesn't clean sulcus area Easy to learn good gingival stimulation Stillman' s On buccal and lingual, aplically at an ablique angle to long axis of tooth. Ends rest on gingiva and cervical part. On buccal and lingual slight rotary motions with bristle ends stationary Excellent gingival stimulation Moderate dexterity required Moderate cleaning of interproximal area Modified stillman's Pointing apically at and angle of 45o to tooth surface Apply pressure as in stillmans's method but vibrate brush and also move occlusally Easy to master Gingival stimulation
  • 28. Method Bristle placement Motion Advantage/ disadvantage Scrub Horizontal on gingival margin Scrub in anterior position direction keeping brush horizontal Easy to learn & best suited for children BASS Apical towards gingival into sulcus at 450 to tooth surface Short back and forth vibratory motion while bristles remain in sulcus. Cervical plaque removal Easily learned Good gingival stimulation Charter's Coronally 45o, sides of bristles half on teeth and half of gingiva Small circular motions with apical movements towards gingival margin Hard to learn and position brush Clears inter proximal Gingival stimulation Fones Perpendicular to the tooth With teeth in occlusions, move brush in rotary motion over both arches and gingival margin Easy to learn Inter proximal areas not cleaned May cause trauma Roll Apically, parallel to tooth and then over tooth surface On buccal and lingual inward pressure, then rolling of head to sweep bristle over gingiva & tooth Doesn't clean sulcus area Easy to learn good gingival stimulation Stillman's On buccal and lingual, aplically at an ablique angle to long axis of tooth. Ends rest on gingiva and cervical part. On buccal and lingual slight rotary motions with bristle ends stationary Excellent gingival stimulation Moderate dexterity required Moderate cleaning of interproximal area Modified stillman's Pointing apically at and angle of 45o to tooth surface Apply pressure as in stillmans's method but vibrate brush and also move occlusally Easy to master Gingival stimulation
  • 30. Tooth Brushing Three methods widely accepted: the modified bass method, the modified stillman method( stillman 1932), and the charters method( Carter’s 1948) . Controlled studied evaluating the most common brushing technique have shown that no one method is superior Recommended is Bass technique , because it
  • 31. BASS OR SULCUS CLEANING METHOD Most accepted and effective method for the removal of dental plaque present adjacent to and underneath the gingival margin. • INDICATIONS  interproximal areas  cervical areas beneath the height of contour of enamel.  exposed root surfaces.
  • 32. TECHNIQUE  The bristles are placed at a 45 degree angle to the gingiva and moved in small circular motions.  Strokes are repeated around 20 times,3 teeth at a time.  On the lingual aspect of the anterior teeth, the brush is pressed into the gingival sulci and proximal surfaces at a 45 angle.  The bristles are then activated.  Occlusal surfaces are cleaned by pressing the bristles firmly and then activating the bristles.
  • 34. ADVANTAGES • Effective method for removing plaque. • Provides good gingival stimulation. DISADVANTAGES • Injury to the gingival margin. • Time consuming. • Dexterity.
  • 35. MODIFIED BASS TECHNIQUE • INDICATION: • As a routine oral hygiene measure • Intrasulcular cleansing.
  • 36. TECHINIQUE • Vibratary and circular movements with sweeping motion • Bristles are at 45 to the gingiva • Bristles are swept over the sides of the teeth towards their occlusal surfaces in a single stroke.
  • 37. ADVANTAGES • EXCELLENT SULCUS CLEANING. • GOOD INTER PROXIMAL AND GINGIVAL CLEANING. • GOOD GINGIVAL STIMULATION DISADVATAGES • DEXTERITY
  • 38. MODIFIED STILLMAN’S TECHNIQUE INDICATIONS • DENTAL PLAQUE REMOVAL • CLEANING TOOTH SURFACES AND GINGIVAL MASSAGE . DISADVANTAGE • TIME CONSUMING • DAMAGE EPITHELIAL ATTACHMENT.
  • 39. TECHNIQUE • Bristles are pointed apically with an oblique angle to the long axis of the tooth • Bristles placed on the cervical aspect of the teeth • Short back and forth motion moved in a coronal direction.
  • 40. CHARTER’S METHOD INDICATIONS: • Persons having :- • Missing papilla and exposed root surfaces. • FPD and Orthodontic appliances. • Periodontal surgery. • Interproximal gingival recession.
  • 41. TECHNIQUE • A soft/medium multi-tufted tooth brush taken • Bristles are placed 45 to the gingiva with bristles directed coronally. • Mild vibratory strokes required with bristles ends lying interproximally.
  • 42. ADVANTAGES • Massage and stimulation of gingiva. DISADVANTAGES • Poor removal of subgingival bacterial accumulations. • Limited brush placement. • Requirements in digital dexterity are high.
  • 43.  The use of hard toothbrush , vigorous horizontal brushing, the use of extremely abrasive dentifrices may lead to cervical abrasion of teeth and recession of the gingiva.( Jepson ,1998)  Toothbrushes need to be replaced every 3 months The Toothbrush
  • 44. The Toothbrush Soft, nylon bristle toothbrush • clean effectively (when used properly), • remain effective for a reasonable time , • Soft bristle are more flexible and atraumatic • clean beneath the gingival margin, • reach farther into the proximal tooth surfaces.
  • 47. EMBRASURE • V-shaped spillway next to the contact area of adjacent teeth; • Narrowest at the contact and widening toward the facial, lingual, and occlusal contacts
  • 48. Powered toothbrushes Invented in 1939. Motions: Back and forth Circular Elliptic Combinations
  • 49. Cleaning action by: 1. Mechanical contact between the bristles and the tooth 2. Low-frequency acoustic energy generates dynamic fluid movement and provides cleaning slightly away from the bristle tips.
  • 50. INDICATIONS: 1. Children and adolescents 2. Children with physical or mental disabilities 3. Hospitalized patients, including older adults who need to have their teeth cleaned by caregivers 4. Patients with fixed orthodontic appliances.
  • 51. • Patients who can develop the ability to use a toothbrush properly usually do equally well with a manual or a powered toothbrush. • Less diligent brushers do better with powered tooth brushes, which generate stroke motions automatically and require less operator effort.
  • 52. DENTIFRICES Aids in cleaning and polishing tooth surfaces.
  • 53. Composition: 1. Abrasives- silicon oxides, aluminum oxide 2. Humectants 3. Water 4. Soap or detergent 5. Flavoring and sweetening agents 6. Therapeutic agents such as fluorides and pyrophosphates 7. Coloring agents and preservatives.
  • 54. The term dentifrice is derived from dens (tooth) and fricare (to rub). A simple, contemporary definition of a dentifrice is a mixture used on the tooth in conjunction with a toothbrush.
  • 55. 55 Dentifrices are marketed as Toothpowders Toothpastes Gels
  • 56. Original purpose: • Pleasant taste • Cosmetic effect • Remove extrinsic stains
  • 57. Abrasives Degree of abrasive hardness depends on: • inherent hardness of the abrasive • size of the abrasive particle • shape of the particle
  • 58. Other variables: • the brushing technique • pressure on the brush • the hardness of the bristles • the direction of the strokes • number of strokes
  • 59. Abrasives used: • Calcium carbonate • calcium phosphate • baking soda (sodium bicarbonate) • Silicas • silicon oxides • aluminum oxides
  • 60. Humectants • Toothpaste consisting only of a toothpowder and water results in a product with several undesirable properties. • Over time, the solids in the paste tend to settle out of solution and the water evaporates. • This may result in caking of the remaining dentifrice.
  • 61. • To solve this problem, humectants were added to maintain the moisture. • Commonly used humectants are: • Sorbitol, • Mannitol, • Propylene glycol
  • 62. • Advantages: 1. Long shelf life 2. Maintained moisture content 3. Nontoxic • Disadvantages 1. Mold or bacterial growth can occur in their presence
  • 63. Soaps • Logical cleansing agent. • The toothbrush bristles dislodge food debris and plaque • The foaming action of the soap aids in the removal of the loosened material.
  • 64. • Disadvantages of soaps: 1. irritating to the mucous membrane 2. flavor is difficult to mask 3. often causes nausea 4. soaps are incompatible with other ingredients, such as calcium.
  • 65. Detergents • Substitute to soaps • sodium lauryl sulfate (SLS) is the most widely used detergent
  • 66. • Advantages of SLS: 1. Stable 2. Possesses some antibacterial properties 3. Has a low surface tension which facilitates the flow of the dentifrice over the teeth 4. Active at a neutral ph 5. Flavor is easy to mask 6. Compatible with the current dentifrice ingredients
  • 67. Flavoring and Sweetening Agents • Flavor, along with smell, color, and consistency of a product, are important characteristics that lead to public acceptance of a dentifrice. • The flavor must be: pleasant, provide an immediate taste sensation, relatively long-lasting
  • 68. • Synthetic flavors are blended to provide the desired taste. • Spearmint, • peppermint, • wintergreen, • cinnamon, • other flavors give toothpaste a pleasant taste, aroma, and refreshing aftertaste
  • 69. Sweetening Agents • In early toothpaste formulations, sugar, honey, and other sweeteners were used. • DISADVANTAGE: these materials can be broken down in the mouth to produce acids and lower plaque pH, they may increase caries RISK.
  • 71. • Sorbitol and mannitol serve a dual role as sweetening agents and humectants. • Glycerin also serves as a humectant, adds to the sweet taste. • A new sweetener in some dentifrices is xylitol.
  • 73. Essential-Oil Dentifrices • The essential-oil ingredients found in Listerine mouth rinse are also available in a dentifrice formulation. • The clinical and laboratory data suggest a benefit to gingival health and plaque reduction • This product does not carry theADA Seal of Acceptance
  • 74. Therapeutic Dentifrices • The most commonly used therapeutic agent added to dentifrices is fluoride, which aids in the control of caries. • OTC: The original level of fluoride -restricted to 1,000 to 1,100 ppm fluoride • total of no more than 120 mg of fluoride in the tube • Requirement that the package include a safety closure.
  • 75. • Therapeutic toothpastes, dispensed on prescription, could contain up to 260 mg of fluoride in a tube.
  • 76. • OTC safe levels: • 0.22% sodium fluoride (NaF) at a level of 1,100 ppm, • 0.76% sodium monofluorophosphate (MFP) at a level of 1,000 ppm, • 0.4% stannous fluoride (SnF2) at a level of 1,000 ppm.
  • 77. • Fluoride levels were increased to 1,500 ppm sodium monofluorophosphate in "Extra Strength Aim," marketed OTC. • In published studies, this product was 10% more effective than an 1,100 ppm NaF dentifrice. • A recently introduced prescription dentifrice, Colgate Prevident contains 5,000-ppm
  • 78. Stannous Salts • Stannous fluoride (SnF2), specifically the stannous ion, has reported activity against caries, plaque, and gingivitis. • While SnF2 has a long record as an anticaries agent, long-term stability in dentifrices and mouthrinses has been questioned since clinical antimicrobial activity has only been demonstrated in anhydrous state.
  • 79. Triclosan • Triclosan is a broad-spectrum antibacterial agent • It is effective against wide variety of bacteria • A review of the available pharmacological and toxicological information • Triclosan can be considered safe for use in dentifrice and mouth rinse products.
  • 80. Anticalculus Dentifrices • Interrupt the process of mineralization of plaque to calculus. • Plaque has a bacterial matrix that mineralizes due to the super saturation of saliva with calcium and phosphate ions. • Crystal growth inhibitors may be added to dentifrices to provide a reduction in calculus formation.
  • 81. Antihypersensitivity Dentifrices Active agents such as: • potassium nitrate, • strontium chloride, • sodium citrate
  • 82. Whiteners • Controversial • These dentifrices control stain via physical methods (abrasives) and chemical mechanisms (surface active agents or bleaching/oxidizing agents).
  • 84. Interdental cleaning aids • Dental floss • Interdental brushes • Wooden or rubber tips
  • 85. Embrasures • Gingival embrasure space: a small triangular open space • V-shaped spillway next to the contact area of adjacent teeth • Gingival embrasure space evaluation is critical in determining which aid will provide the most accurate biofilm control.
  • 86. TYPE I • Embrasure is filled completely by interdental papilla. • Dental floss is effective
  • 87. TYPE II • The height of interdental papilla is reduced. • Interdental brushes and wooden toothpicks are effective.
  • 88. TYPE III • The interdental papilla is missing. • Interdental brushes and end-tuft brushes are effective.
  • 89.
  • 90. PLANNING INTERDENTAL CARE • PATIENT HISTORY OF ORAL HYGIENE • DENTAL AND GINGIVAL ANATOMY • PLAQUE SCORES • SELECTION OF INTERDENTAL AIDS
  • 91. DENTAL FLOSS • Levi Spear Parmly • REMOVES DENTAL BIOFILM • REDUCES INTERPROXIMAL BLEEDING • EFFICIENT IN TYPE I EMBRASURES
  • 92. TYPES OF DENTAL FLOSS • Multifilament vs. monofilament • Twisted vs. untwisted • Bonded vs. unbonded • Waxed vs. unwaxed
  • 93. • Monofilament: resists breakage or shredding when passed over irregular tooth surfaces, restorations or calculus deposits. • Waxed: gives strength and durability during application. • Shredding and breakage is rare
  • 94. Materials: • Silk: loosely twisted, waxed • Nylon: multifilaments, waxed/ unwaxed circular (floss) or flat (dental tape) • Expanded PTFE: monofilament, waxed
  • 95. Floss Available • Flattened floss is designed to increase the contact surface with the tooth. • Ultra floss is spongy and soft. • Round floss is relatively thinner. • Superfloss contains segments of stiffened-end threader, spongy floss and regular floss.
  • 96. • Stiffened-end threader can make it easier to slide the superfloss through the gap between the teeth and fixed orthodontic appliances. • Spongy floss cleans around the appliances and between wide spaces or to floss underneath the bridge. • Regular floss removes plaque from the adjacent tooth surfaces.
  • 97.
  • 98. How to Floss: Using 18 inches of dental floss, wrap it lightly around middle fingers. Firmly grasp the dental floss with index fingers. Forming a C- shape, carefully slide the floss up and down between tooth and gum line. Gently slide the floss in between both sides of teeth and repeat until finished.
  • 99. Common Mistakes: • Not placing the floss under the gum line - Not placing dental floss carefully under the gum line, the area where plaque accumulation occurs most, will not be as effective in the prevention of dental decay and periodontal disease. • Rushing when flossing the teeth - One cannot perform proper flossing when rushing through the procedure of removing plaque. One should take at least 2-3 minutes when flossing.
  • 100. Misconception: • Flossing is not just supposed to remove food particles from between teeth. • The primary function of dental floss is to remove the invisible film of bacteria that constantly forms between teeth i.e. plaque. Flossing should be performed between each tooth.
  • 101. INTERDENTAL BRUSH • Open embrasure spaces • Type II & III • Root concavities
  • 102. Root Concavities • They are trenchlike depression in the root surface. • In health, root concavities are covered with alveolar bone. • In periodontitis, junctional epithelium migrates apically with bone and tissue destruction, exposing the root concavity to the oral environment.
  • 104. Steps for Use of the Interdental Brush • Hold brush handle between the thumb and the index finger • Gently insert between teeth • Maintain brush at a 90-degree angle to the long axis of the tooth • Use slight pressure to adapt brush
  • 105. • Slide brush in and out of the space • Adapt brush to the mesial surface of the first premolar • For posterior areas, advise the patient to close his or her mouth slightly to relax the cheek. • It is helpful to bend the brush to facilitate insertion.
  • 106. Single tufted brush • A single tuft or group of small tufts, may be 3-6 mm in diameter • Flat or tapered • Handle : straight or contra- angled
  • 107. Indications: • Type II embrasures • Fixed dental prosthesis • For difficult to reach areas
  • 108. INTERDENTAL TIP • Conical or pyramidal flexible rubber tip attached to the end of the handle of a toothbrush. • Soft, pliable rubber tip: adapted to the interdental area and below gingival margin • Does not cause damage to epithelial lining.
  • 109. INDICATIONS: • Interdental embrasure type II • Plaque removal at or just below the gingival margin.
  • 110. WOODEN TIP • Wooden cleaner is a 2 inch long device • Made of: basswood birch wood • It is triangular in cross section • Indication: type III embrasure
  • 111. GINGIVAL MASSAGE • Advantages: Epithelial thickening, increased keratinization, increased mitotic activity in epithelium and connective tissue alteration or removal of plaque
  • 112. Oral irrigation devices • Supragingival irrigation • Subgingival irrigation
  • 113. Supragingival vs. Subgingival Irrigation • The objective of supragingival irrigation is to diminish gingival inflammation by disrupting biofilms coronal to the gingival margin. The goal of subgingival irrigation is to reduce the number of bacteria in the periodontal pocket space.
  • 114. Dental Water Jet • Device that delivers pulsed irrigation of water or other solution supragingivally and subgingivally • Also known as dental water irrigator, home irrigator, water flosser
  • 115. Mechanism of Action • Delivers a pulsating fluid that incorporates a compression and decompression phase • This creates two zones of fluid movement called hydrokinetic activity. • Impact zone—initial fluid contact with an area of the mouth Flushing zone—depth of fluid penetration within a subgingival sulcus or periodontal pocket
  • 116. Benefits of Home Irrigation • Biofilm removal • Bleeding reduction • Gingival inflammation reduction • Periodontal pathogens reduction • Reduction in inflammatory and destructive host response
  • 117. Indications for Recommendation • Individuals on periodontal maintenance • Individuals who are noncompliant with dental floss • Individuals with special needs • Individuals with dental implants • Individuals with diabetes • Individuals with orthodontic appliances
  • 118. Precautions: • Incidence of bacteremia is similar to other oral healthcare devices. • Before recommending a water jet to a patient who is at high risk for infective endocarditis, dental healthcare providers should consider both the patient's overall medical and oral health status. • Consultation with a physician is advisable for
  • 119. Irrigating Solutions • Water • Antimicrobial solutions Chlorhexidine Essential oils Other solutions
  • 120. TONGUE CLEANING • Daily tongue cleaning removes pathogenic bacteria on the dorsum surface. • Reduces bacteria in the saliva • Improves taste sensation • Reduces halitosis • Removes volatile sulfur compounds, which are gases that cause halitosis
  • 121. • Manual tongue cleaners come in a variety of styles. Toothbrush with a thin head Tongue scrapers All types are designed to allow patients to reach the