This document discusses impacted teeth, specifically impacted third molars (wisdom teeth). It begins by defining an impacted tooth and listing common causes, such as lack of space, retained primary teeth, and systemic issues. It then discusses methods for assessing the difficulty of removing impacted third molars, including the Pell-Gregory and Winter's classifications which consider angulation, depth of impaction, and relationship to surrounding structures. The document provides details on evaluating impacted teeth and surrounding bones on dental radiographs to determine the best treatment approach and prognosis.
One of the most painful but easy-to-treat dental emergencies is a dry socket.
• Dry socket symptoms are experienced after a tooth extraction.
• This condition requires follow-up care by the doctor who performed the surgery, an oral surgeon or a dentist who is familiar with how to treat it.
For more information, contact :-
Dr Sachdeva's Dental Aesthetic And Implant Institute,
I 101, Ashok Vihar Phase 1, Delhi- 110052
Contact us at
• Phone : +919818894041,01142464041
• Our Websites:
• www.sachdevadentalcare.com
• www.dentalclinicindelhi.com
• www.dentalimplantindia.co.in
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#drysocket #management #thirdmolarextraction #extractioncomplications
One of the most painful but easy-to-treat dental emergencies is a dry socket.
• Dry socket symptoms are experienced after a tooth extraction.
• This condition requires follow-up care by the doctor who performed the surgery, an oral surgeon or a dentist who is familiar with how to treat it.
For more information, contact :-
Dr Sachdeva's Dental Aesthetic And Implant Institute,
I 101, Ashok Vihar Phase 1, Delhi- 110052
Contact us at
• Phone : +919818894041,01142464041
• Our Websites:
• www.sachdevadentalcare.com
• www.dentalclinicindelhi.com
• www.dentalimplantindia.co.in
• www.dentalcoursesdelhi.com
• www.facialaestheticsdelhi.com
#drysocket #management #thirdmolarextraction #extractioncomplications
Complication of Tooth Extraction and their Management - Presented by Dr. Trisha and group as a part of OMS Department weekly presentation in Dhaka Dental College
brief description on posterior superior alveolar nerve block.
its uses in dentistry, technique and action. locating PSA nerve is easy and this is the most used nerve block in dentistry.
Extraction instruments | Dental surgery | by Dr.mohammad nameerDenTeach
Learn about Extraction instruments - including forceps and elevators types used in general dentistry in any dental clinic.
Powerpoint shared by: Dr.mohammad nameer
You can watch dental videos and read in dentistry on:
www.denteach.com
Apexogenesis & apexification in pediatric dentistryDr. Harsh Shah
SDDCH Parbhani
Presented by : Vipul GIratkar
Dept. of Pediatric dentitstry
Guided by . Dr. Rehan Khan
DIscussion regarding apexification and apexogenesis
Complication of Tooth Extraction and their Management - Presented by Dr. Trisha and group as a part of OMS Department weekly presentation in Dhaka Dental College
brief description on posterior superior alveolar nerve block.
its uses in dentistry, technique and action. locating PSA nerve is easy and this is the most used nerve block in dentistry.
Extraction instruments | Dental surgery | by Dr.mohammad nameerDenTeach
Learn about Extraction instruments - including forceps and elevators types used in general dentistry in any dental clinic.
Powerpoint shared by: Dr.mohammad nameer
You can watch dental videos and read in dentistry on:
www.denteach.com
Apexogenesis & apexification in pediatric dentistryDr. Harsh Shah
SDDCH Parbhani
Presented by : Vipul GIratkar
Dept. of Pediatric dentitstry
Guided by . Dr. Rehan Khan
DIscussion regarding apexification and apexogenesis
Normal occlusion 1 /certified fixed orthodontic courses by Indian dental acad...Indian dental academy
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
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Instruments used in oral and maxillofacial surgeryCing Sian Dal
Instruments used in oral and maxillofacial surgery
Copyright (c) Prof. Dr. U Ko Ko Maung
Department of Oral and Maxillofacial Surgery
University of Dental Medicine, Yangon
Instruments used in oral and maxillofacial surgeryCing Sian Dal
Instruments used in oral and maxillofacial surgery
Copyright (c) Dr. Ko Ko Maung
Department of Oral & Maxillofacial Surgery
University of Dental Medicine, Yangon
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
Basavarajeeyam is a Sreshta Sangraha grantha (Compiled book ), written by Neelkanta kotturu Basavaraja Virachita. It contains 25 Prakaranas, First 24 Chapters related to Rogas& 25th to Rasadravyas.
- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
- Video recording of this lecture in Arabic language: https://youtu.be/Ve4P0COk9OI
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
- Link to NephroTube website: www.NephroTube.com
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The Gram stain is a fundamental technique in microbiology used to classify bacteria based on their cell wall structure. It provides a quick and simple method to distinguish between Gram-positive and Gram-negative bacteria, which have different susceptibilities to antibiotics
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
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Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
2. • Impacted teeth are those prevented from erupting by
some physical barrier in the eruption path (Shafer,1964)
• A tooth that is completely or partially un-erupted and is
positioned against another tooth, bone or soft tissue, so
that its further eruption is unlikely, described according
to its anatomical position. ( Archer, 1975)
• One that fails to erupt into the dental arch within the
expected time ( Peterson, 1993)(18-25yrs for 8s)
• A tooth that fails to erupt, for whatever reason , into the
dental arch within the expected time (Dimitroulis,1997)
3. Causes
• Local causes
-irregularity in the position and pressure of an adjacent
tooth
-density of the overlying and surrounding bone
-long continued chronic inflammation with resultant
increase in density of overlying mucous membrane
-lack of space due to under developed jaws
-unduly retention of the primary teeth
-acquired diseases such as necrosis due to infection or
abscess
- inflammatory changes in bone due to exanthomatous
diseases in children
8. Indications for removal of impacted teeth
Local ;
• - Prevention of pericoronitis (operculitis)-,Ac. pericoronitis
• - Prevention of periodontal diseases
• - Prevention of infection- cellulitis , osteomyelitis
• - Prevention of dental caries
• - Prevention of damage to adjacent tooth
• - Impacted teeth under dental prosthesis
• - Prevention of odontogenic cyst & tumour -
• - Prevention of pain of unexplained origin
• - Prevention of fracture of jaw
• - Facilitation of orthodontic treatment
• - Lack of function / occlusion
General ;
• - Young – bone elasticity
• - Difficult to get treatment - Traveler to the remote area , soldier
at frontier , seamen
13. -Removal of embedded supernumerary tooth to facilitate the
orthodontic treatment
14. - Prevention of fracture of jaw – impacted last molar weaken the
angle of the mandible
15. Contraindication
• Extreme of age - highly calcified & less flexible, post-op
sequelae, greater recovery period
• Compromised medical status – systemic diseases
• Pregnancy
• Probable excessive damage to adjacent structures – nerves ,
teeth, prosthesis of precious metal (consent)
16. Various Preoperative Difficulty AssessmentVarious Preoperative Difficulty Assessment
IndicesIndices
WAR lines or Winter’s lines (1926)
Winter’s classification (1926)
Pell-Gregory classification (1933)
WHARFE’s scale (1985)
Pederson scale (1988)
New index by Yuasa et.al (2002)
New index by Gbotolorun et.al. (2007)
9/6/2012 16
17. Classification
• Classifying results from analysis of radiograph .
Panoramic X ray shows a more accurate picture of the
total anatomy of the region .
• Pell & Gregory - Classes I, II & III Relationship to anterior
border of the ramus
• Pell & Gregory - Classes A ,B & C Relationship to
occlusal plane of second molar , Thickness of overlying
bone
18. • Class 1 - Mesiodistal diameter of the crown is
completely anterior to anterior border of the ramus.
Mandibular third molar has sufficient room to erupt
19. • Class 2 - About half is covered by anterior portion of
ramus
20. • Class 3 - Completely within the mandibular ramus
21. • Class A - Occlusal surface of impacted tooth is at same
level as or nearly level with occlusal plane of second
molar
22. • Class B - It is between occlusal plane & cervical line of
second molar.
23. • Class C - It is below cervical line of second molar
28. Winter’s Classification (1926)
• Angulation ; the third molar could be
Vertical – long axis of the third molar parallel to the second
molar
Horizontal - long axis of the third molar perpendicular to the
second molar
Mesio-angular - long axis of the third molar inclined in mesial
direction to the second molar
Disto- angular - long axis of the third molar inclined in distal
direction to the second molar
29. Angulation assess by long axis of the teeth
• The long axis of impacted third
molar with respect to the long
axis of second molar .
• Mesioangular
• tooth is tilted toward the
second molar in mesial
direction
30. • Distoangular ; long
axis of the third
molar is distally
inclined
31. • Vertical ; long axis
of the impacted
tooth runs in the
same direction as
the long axis of the
second molar
39. •Buccal / Lingual version ; tooth angled in
buccal / lingual direction
•Transvers ; tooth absolutely horizontal position
in buccolingual direction . the occclusal surface
face either the buccal / lingual
•
40.
41. Shiller 1979
• Angle b/t occlusal
surfaces of impacted 8s
and 2nd molar.
• Vertical
<10 degree, Horizontal >
70 degree
•
Mesiangular and
Distalangular 10 to 70
degree
42. Angulation assess by Curve of Spee
• Assessed by comparing the line
joining the mesial and distal
images of the cusps of the
wisdom tooth with the curve of
Spee formed by joining the
cusps of the premolar and
molar teeth
• If the wisdom tooth line, when
extended posteriorly would
meet the Spee line then the
tooth is mesio-obliquely
• Conversely , if the wisdom
tooth line never meet the Spee
line , then it is disto-obliquely
43. Killey, Kay Classification (1975)
• Angulation & Position
Mesio, Disto, Horiz., Vert.
Transverse displacement
Aberrant position
• State of eruption – Erupted
Partially erupted
Un erupted
• Number of root – Fused, multirooted
47. Radiographic assessment of mandibular
third molars
• Diagnosis , Localisation , Treatment Plan
• Intraoral
• Periapical – Detail, less distortion
• Winter's view – Modified periapical
• Occlusal view – Oblique occlusal of R/L side of
mandible (lingual / buccal )
• Extraoral
• for lower 8s-Oblique lateral view of L + R side of mandible
• for upper 8s- Occipito mental 0· / 10· / 15· / 30· , True
lateral
• for both- Orthopantomogram (Panoramic view)
• CBCT
48. •Radiographic interpretation
The specific features that need to be identified
can be divided into those related to:
• lower third molar itself
• lower second molar
• surrounding bone
• relationship of the apices with the inferior
dental canal
49. • Lower last molar in bony crypt , crown formation only is completed
51. • The crown
•The size
•The shape
•The presence and extent of caries
•The presence and severity of resorption
• The roots
•The number
•The shape
•Curvatures, whether they are favourable or unfavourable
•The stage of development
52. • The Lower Second molar assessment
The crown
The condition and extent of existing restorations
The presence of caries
The presence and severity of resorption.
The roots
The number
The shape, and if it is conical
The periodontal status
The condition of the apical tissues.
53. • Assessment of the surrounding bone
• Depth of the tooth
• Distal alveolar bone crest
• Bone between lower second and last molar
• Texture and density of the bone
54. • The depth of the tooth in the alveolar bone
Two main methods are used commonly to assess tooth
depth:
•Winter’s lines
•Using the roots of the second molar as a guide.
55. Winter’s Lines or WAR Lines (1926)
• (White, Amber and Red) that indicate depth of tooth in bone.
56. • Winter’s lines, in this method, three imaginary lines
( traditionally described by number or colour) are drawn on
a geometrically accurate periapical radiograph,as follows:
•The first is drawn along the occlusal surfaces of the
erupted first and second molars
•The second or amber line is drawn along the crest of the
interdental bone between the first and second molars,
extending distally along the internal oblique ridge, NOT the
external oblique ridge. This line indicates the margin of the
alveolar bone surrounding the tooth
57. •The third or red line is a perpendicular dropped from the
white line to the point of application for an elevator, but
is measured from the amber line to this point of
application. This line measures the depth of the third
molar within the mandible.
As a general rule, if the red line is 5mm or more in
length the extraction is considered sufficiently difficult
for the tooth to be removed under general anaesthetic
or using local anaesthetic and sedation
58.
59.
60.
61.
62. Using the roots of the second molar as a guide
• The roots of the adjacent second molar are divided
horizontally into thirds
• A horizontal line is then drawn from the point of application
for an elevator to the second molar
• If the point of application lies opposite the coronal , middle
or apical third the extraction is assessed as being easy ,
moderate or difficulty , respectively
63.
64. • Depth assessment of
the impacted wisdom
tooth
• (a) superficial
• (b) intermediate
• (c) deep
65. Relationship of the apices to the ID
canal
* often appear close to the ID canal
* superimposed / intimate relationship
66.
67. • The normal radiographic appearance of the ID canal (two
thin, parallel radioopaque lines - the so- called Tram
lines)and the variations that indicate a possible intimate
relationship.These variations include:
•Loss of the tramlines
•Narrowing of the tramlines
•A sudden change in direction of the tramlines
•A radiolucent band evident across the root if the tooth is
grooved or tunnelled through by the ID bundle.
68.
69.
70.
71. Assessment of the patient –
Indication/ contraindication , Choice of
anesthesia , Treatment plan - one visit, two visit
• Age – Health condition , surgical stress,
High calcified, thick overlying bone , ankylosed ,
Recovery / healing
• Sex - Male / Female
• Occupation – Traveler, soldier, sailor – all 8s
clearance
• Type – Nervous, apprehensive, Co-operative,
Handicapped
• Others – Small mouth , fat cheek , TMJ
problem , angular stomatitis
• General conditions – Host defense (medically
compromised , immunocompromised ) , Pregnancy
(reproductive age) , R/T – ORN , unable to lie (cervical
spondilosis)
72. Clinical assessment - Treatment plan ,
Operative procedure , Timing
• History – First attack of pericoronitis , Repeated attack ,
Attempted removal , Failure of opeculectomy , Pain of unknown
etiology
• Examination –
- General – febrile/ ill
- Local - intraoral examination
No S/S
With S/S – Pain, Tenderness, Trismus, Swelling ,
Lymphadenitis, Dysphagia , Consequences of untreated
infection
• 8 – condition, portion visible intra-oral , position (tally with x ray ),
function
• adjacent tooth (7) condition, caries , periodontal problem
• Opposing 8. Impinging, Buccally erupt
• Site of Injection – Pus - L.A become ionized , cannot diffuse
- Spread of infection
• Oral hygiene status – pre-op prophylaxis
74. Cl I , Cl A vertical impaction , soft tissue
impaction only , half of the crown can be
seen intraorally
75. Condition of adjacent tooth – cervical
caries with pulp exposure
Mesioangular last molar can be easily
removed after removal of the the poor
quality adjacent tooth
78. Treatment Plan
- Treat Ac. condition – ? Hospitalization
- antibiotics –Emperical , mixed gm (+)& (-) and anaerobic
organisms
- analgesic
- anti inflammatory
- mouth wash antiseptic(chlorohexidine) , (hypertonic
hot saline)
- Abscess – I & D, pus for C+ S
- Trismus - mouth opening exercise
- Removal of opposing 8 impinging
- Plan for removal of lower 8 ( focal of infection )only when
Ac. condition are subsided
79.
80. Miscellaneous assessment
• Armamentarium – Light, suction , proper instruments –
chisel , mallet , elevator etc.
• Operator – Skill, condition, time
• Assistant
81. Choice of anaesthesia
• L.A ( Bilateral Block – safe,anesthetize only sensory not motor)
• L.A + Sedation D/Z , Medazolam
- Close monitoring – BP , ECG, Pulse oximeter
- Air way protection – sedated case has reduced gag reflex
- Flumerzenil – reversal agent for D/Z
• L.A + relative analgesia ( O2 + N2O )
• G.A. (Emotional status, competence of patient ,convenience of
surgeon) , Anesthetia assessment
82. Flap
Objective;
• for adequate exposure
• reflected soft t/s (retract of mucoperiosteal flap) provides
accessible surgery
• to access the need for bone removal, create fulcrum by
window , guttering make into hollow) , ditching( trench cut).
NB; stop cut is mandatory when chiseling
• to divide tooth either by bur or chisel without excessive
bone removal
• appropriate elevation
• wound cleansed and irrigated under vision
86. Tooth removal
• Elective surgery – wound prophylaxis
• Simple elevation Cl. I, A, vertical , ¾ crown
• Surgical removal - open
Sectioning - bone ( widening of exit)/ tooth(reducing of
object) , bur and/ or chisel
• Germectomy – removal of developmental buds before
anchoring of the roots in the jaw ( 12-19yrs for lower 8s )
88. Chisel
• Advantages – less damages to adjacent structures(buccal
approach)
• Disadvantages – tooth with shallow groove
- disturbing , only perform under GA, premadicated
- cannot perform on elderly , only in young due to high
elasticity
- chisel in line with long axis of tooth, no transverse section
- force not control(bone/ tooth – need experience)
- necessary of jaw support during tapping
89. Bur
• Advantages- familial with bur
- controlled bone removal
- transverse section possible
- fewer assistant
- no sedation
- no physical blow
- continuous wash surgical field
- less swelling & pain
• Disadvantages-emphysema
- continuous water syringing is necessary
- damage to adjacent tissue( friction)
- reassembling of tooth impossible
- bur slip
98. Wound Toilet
• saline , chlorohexdine
- inside socket , under flap
• soft tissue ( residual tooth sac , granulation tissue) inside
socket , ? biopsy –if in doubt
• tooth fragment
• bone fragment
• dislodged filling
• sharp bony edge – squeeze , file especially on lingual side
99. Closure (reposition of flap)
• reassemble all tooth pieces
before closure
• absorbable suture ( 3/0 for
oral ) is more convenient for
patient, no STO
• watertight suture is un-
necessary
• socket kept open
• no tension
• no medicated cone inside
socket
118. Complications (Mobidity)
• addition to all local complications of simple exodontia
Intraoperative;
• Haemorrhage – local inflammation
- cutting of vessel- severing of facial vessel along vertical
incision at lower first molar region upto the lower border of
mandible
• Displaced tooth – lingual pouch/periosteum, lateral pharyngeal
space, air way , antrum, infratemporal pouch in upper
• Adjacent second molar –subluxation, dislodgement of filling , prosthesis
• Subluxation / dislocation of TMJ
• Jaw fracture
121. Factors that make the impaction surgery
• Less difficult More difficult
1. Mesioangular position Distoangular
2. Class 1 ramus Class 3 ramus
3. Class A Depth Class C Depth
4. Roots 1/3 to 2/3 formed Long, thin roots
5. Fused conical roots Divergent curved root
6. Wide periodontal ligament Narrow periodontal
7. Large Follicle Thin Follicle
8. Elastic Bone Dense, inelastic bone
9. Separated from second molar Contact with
10. Separated from IAN Close to
11. Soft tissue impaction Complete bone impaction
122. Benefits of Difficulty Assessment
Treatment
Suitable anaesthesia
Surgical instruments
Surgical technique
Morbidity
Operation time
Referral
122
123. WHARFE's scale
(1985)
Winter’s classification →
expanded by Macgregor to
WHARFE's scale .
Based on six dental factors
Winter's classification
height of mandible
angulation of second molar
root shape and development
follicle morphology
exit path
.
123
Category Score
1. Winter's classification Vertical 0
Mesial 1
Horizontal 2
Distal 2
2. Height of mandible (mm) 01-30 mm 0
31-34 mm 1
35-39 mm 2
3. Angle of second molar (degrees) 1-59• 0
60-69•
1
70-79•
2
80-89• 3
>90•
4
4. Root Shape and development
a)Less than 1/3 complete 2
b)1/3 to 2/3 complete 1
c)More than 2/3 complete 3
Complex 3
Unfavourable curve 2
Favourable curve 1
Normal 0
5. Follicle Normal 0
Possibly enlarged --1
Enlarged -2
Impaction relieved -3
6. Exit path Space 0
Distal cusp Covered 1
Mesial cusp Covered 2
Both covered 3
Total score
126. Operative procedure (Parant scale)
•
•
126
1. Easy - I
2. Moderate - II, III
3. Difficult - IV
(Sulieman et. al, 2006)
127. Consent for the surgical removal of lower
last molar
• Discussion
• Written consent
• Documentation in the chart
128. Seven areas ;
• Specific problem
• Proposed treatment
• Anticipated or common side effects
• Possible complications and frequency of occurence
• Anaesthesia
• Treatment alternatives
• Uncertainities of the outcome