Methods of growth study,theories /certified fixed orthodontic courses by Indi...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.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
At the end of this lecture, the student should be able to:
Develop understanding of the classification
Describe how a cyst develops.
Describe the origin and identifying characteristics of the radicular cyst.
Describe the origin and identifying characteristics of the Dentigerous cyst.
Describe the origin and identifying characteristics of the Odontogenic Keratocyst cyst.
Describe the radiographic characteristics of the dentigerous cyst and the odontogenic keratocyst.
Discuss the radiographic appearance of the lateral periodontal cyst. 8. List the factors involved in the nevoid basal cell carcinoma syndrome.
State the histologic finding that is a key diagnostic feature of Radicular, Dentigerous & Keratocysts.
Describe the origin and identifying characteristics of non odontogenic cysts.
Describe different treatment options available, and their clinical importance.
DEVELOPMENT OF OCCLUSION IN PEDIATRIC DENTISTRYChsaiteja3
HELLO VISITERS, IAM SAITEJA , BDS 3RD YEAR STUDENT FROM MNR DENTAL COLLEGE , SANGAREDDY. I AND MY BATCH HAS DEVELOPED A PPT ON DEVELOPMENT OF OCCLUSION IN PEDIATRIC DENTISTRY. PLEASE GO THROUGH THE PPT. EVERY TOPIC IS CLEARLY EXPLAINED IN THIS PPT ALONG WITH DIAGRAMS.
Methods of growth study,theories /certified fixed orthodontic courses by Indi...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.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
At the end of this lecture, the student should be able to:
Develop understanding of the classification
Describe how a cyst develops.
Describe the origin and identifying characteristics of the radicular cyst.
Describe the origin and identifying characteristics of the Dentigerous cyst.
Describe the origin and identifying characteristics of the Odontogenic Keratocyst cyst.
Describe the radiographic characteristics of the dentigerous cyst and the odontogenic keratocyst.
Discuss the radiographic appearance of the lateral periodontal cyst. 8. List the factors involved in the nevoid basal cell carcinoma syndrome.
State the histologic finding that is a key diagnostic feature of Radicular, Dentigerous & Keratocysts.
Describe the origin and identifying characteristics of non odontogenic cysts.
Describe different treatment options available, and their clinical importance.
DEVELOPMENT OF OCCLUSION IN PEDIATRIC DENTISTRYChsaiteja3
HELLO VISITERS, IAM SAITEJA , BDS 3RD YEAR STUDENT FROM MNR DENTAL COLLEGE , SANGAREDDY. I AND MY BATCH HAS DEVELOPED A PPT ON DEVELOPMENT OF OCCLUSION IN PEDIATRIC DENTISTRY. PLEASE GO THROUGH THE PPT. EVERY TOPIC IS CLEARLY EXPLAINED IN THIS PPT ALONG WITH DIAGRAMS.
Development of dentition. /certified fixed orthodontic courses by Indian dent...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.
Development of dentition & occlusion /certified fixed orthodontic courses by ...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.
The active supervision of the developing dentition is a responsibility of the pedodontist. Seeing things from the beginning is most advantageous. By making a detailed study of dentition from initiation through eruption till functional occlusion, we may be able to obtain a clear concept of how occlusion develops and how its development can be guided. Knowledge of the normal development of the dentition and an ability to detect deviation from the normal are essential pre-requisites for pedodontic diagnosis and a treatment plan.
Development of Occlusion is necessary for knowing the eruption sequence of teeth. By knowing the eruption sequence of teeth we can make our treatment plan. Development of occlusion gives us the knowledge of various malocclusion and we can correct them and give proper treatment plan to the patient.
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.for more details please visit
www.indiandentalacademy.com
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3. Definition
OCCLUSION
Maximum intercuspation of maxillary and mandibular
teeth with minimal overjet and overbite when the jaws
are closed.
It is the normal relationship of the so called occlusal
inclined planes of the teeth when the jaws are closed,
accompanied by the correct proximal contacts and
axial positioning of all teeth, and the normal growth,
development, location and correlation of the various
associated tissues and parts.
4.
5. The mouth of neonate
The primary teeth and occlusion
The mixed dentition period
Permanent teeth and occlusion
Dentitional and occlusal development in young adult
Clinical Implications
12. PRE-DENTAL / DENTATE PERIOD
THE GUM PADS
The alveolar process at the time of birth are known as GUM PADS.
They are pink, firm, horse shoe shaped and covered by a dense layer
of fibrous periosteum.
They develop into two parts: labio-buccal portion and lingual portion
and are separated from each other by a groove called as the ‘Dental
Groove’
13. 1. They are divided into ten segments by ten grooves called
‘Transverse groove’
2. The transverse groove between the canine and first
deciduous molar segment is called the ‘lateral sulcus’
3. ‘Gingival groove’ separates the gum pad from the palate
and floor of the mouth in upper n lower arch separately.
4. The upper and lower gum pads are similar to each other.
15. Predentate Period: Gum pads
Arch-
Complete overjet
Contact area
Infantile anterior open
bite
16. Not normal in……
Predentate Period
Precociously
erupted primary
teeth
Natal teeth
Neonatal teeth
Pre-erupted teeth
Predeciduous teeth
At birth, during 1st month, during 2-3 months,
supernumerary calcified structure.
17. Natal, neonatal teeth
Natal teeth- teeth that are already present at the
time of birth.
Neonatal teeth- teeth which grow in during the
first 30 days after birth.
Precocious Dentition- teeth erupting during the
3-5th month of life.
Normal Dentition -6 months
18. 85% are the deciduous mandibular incisors
and are more frequent among females..
19.
20. Clinical appearance:
The appearance of each natal teeth can be classified into 4
categories:
categorie 1 Shell like crown structure loosely attached to
alveolus by the oral mucosa.
categorie 2 Solid crown loosely attached to alveolus by
oral mucosa.
categorie 3 Incisal edge of crown just erupted through
mucosa.
categorie 4 Mucosal swelling with tooth unerupted but
palpable.
21. Associations
Most of the time, natal teeth are not related to a
medical condition. However, sometimes they may be
associated with:
Ellis-van Creveld Syndrome
Hallermann-Streiff syndrome
Riga fede desease
Soto syndrome
22. Complications:
Traumatic ulcerations on ventral surface of tongue,
frenulum and lip.
Ulcerations of sublingual area in infants (Cardarelli
1857)
In 1881 Riga and Fede described this lesion
histologically.
24. Predentate Period:
Self correcting anomalies
Infantile swallowing pattern Introduction of solid
food in diet
Characteristic features (Moyers)
During swallowing jaws are apart and tongue is placed between
gum pads
Mandible is stabilized by contraction of facial muscles
26. Teething
Child is accompanied by number of relatively minor symptoms.
Signs and symptoms associated with teething
-pain
-inflammation
-general irritability
-disturbed sleep
-drooling
-gum rubbing/biting/sucking
-loss of appetite
- diarrhea
- intra oral ulcers
- increase in body temperature
28. Pharmacological management :
Topical agents : this group of medicaments includes
local anesthetics and minor analgesics.
Lignocaine products : Lignocaine HCl is a local
anesthetic that is rapidly absorbed through mucous
membrane giving relief from pain.
Around 7.5 of gel should be placed on a clean finger
or cotton bud and rubbed onto the painful area.
29. Choline salicyate based products :
their main pharmacological advantage over Lignocaine
based preparations is that in addition to providing
analgesia they also possess anti-inflammatory and
antipyreticproperties thus reducing swelling.
Systemic analgesics :
Paracetamol –
Recommended dose : 3-12 months = 60-120mg
1 -5 yrs = 120-250mg
These doses are repeated at 4-6 hourly interval .
30. DECIDUOUS DENTITION PERIOD
FEATURES:
SPACING IN DECIDUOUS DENTITION
TERMINAL PLANE RELATION OF THE DECIDUOUS MOLARS
DEEP BITE
THE DENTAL ARCHES ARE WIDE ‘U’ SHAPED
FLAT CURVE OF SPEE
SHALLOW CUSPAL INTERDIGITATION
INCISORS ARE MORE VERTICALLY PLACED
31. SPACING OF DECIDUOUS DENTITION
Physiological spaces or developmental spaces.
The presence of spaces in the primary dentition is
important for the development of permanent dentition and
absence of spaces in the primary dentition is an indication that
crowding of teeth occur.
In maxillary arch-4mm
In mandibular arch-3mm
32. PRIMATE SPACES:
Spacing seen mesial to
the maxillary canines and
distal to the mandibular
canines are wider than in
other spaces.
These physiological
spaces are called
Primate spaces or
Simian spaces or
Arthropoid spaces.
(Baume)
33. TERMINAL PLANE RELATION OF THE
DECIDUOUS MOLARS
The mesio-distal relation between the distal
surfaces of the upper and lower second deciduous
molars is called the terminal plane.
There can be 3 types are given by Baume:
1) Flush terminal plane
2) Mesial step terminal plane
3) Distal step terminal plane.
34.
35. DEEP BITE
A deep bite may occur in the initial stages of
development.
The lower incisal edges often contact the cingulum
area of the maxillary incisors.
This deep bite is later reduced.
38. Deciduous dentition:
Development of occlusion
Primary dental arches
Ovoid in shape
Role of tongue
In maxilla
Increased intercanine width by
6 mm between 3-13 yrs
Increased Intermolar width of
2 mm between 3-5 yr
39. Development of occlusion
In mandible
Increased intercanine
width by 3.7 mm between
3-13 yrs
Increased Intermolar width
of 1.5 mm between 3-5 yr
Loss of arch length in
mixed and permanent
dentition
Up righting of incisors,
loss of leeway space
44. MIXED DENTITION PERIOD
The mixed dentition period can be
classified into three phases:
1. First transitional period.
2. Inter-transitional period.
3. Second transitional period.
45. FIRST TRANSITIONAL
PERIOD
The first transitional period is characterized
by:
1. Emergence of the first permanent molars.
2. The exchange of deciduous incisors with the
permanent incisors.
46. EMERGENCE OF THE FIRST
PERMANENT MOLARS
The location and relation of the first permanent molar
depends much upon the distal surface relationship
between the upper and lower second deciduous
molars.
The first permanent molars are guided into the dental
arch by the distal surface of the second deciduous
molars.
47. Early Mesial Shift:
the forward
movement of the first
permanent molar utilizing the
primate space is termed as
Early Mesial
Shift.(baume1951)
Late Mesial Shift:
when the deciduous
second molars exfoliate the
permanent first molars drift
mesially utilizing the leeway
space. This occurs in the late
mixed dentition period and is
called Late Mesial
Shift.(clinch,davey1951)
48. First transitional period -- Baume classification
Terminal plane Permanent dentition
Flush terminal plane Initially endon, later class I
Mesial step terminal plane Initially class I, later classIII
Distal step terminal plane Class II
49. Mixed dentition
First transitional period
Incisor eruption
Mandible
Develop lingually to primary
roots
• Exfoliation of deciduous .lateral
.incisor
– activation of eruption and
labial movement
Lateral eruption- Crowding
51. The exchange of incisors
The mandibular central incisors are usually the first to
erupt.
The permanent incisors are considerably larger than
the deciduous teeth they replace.
This difference between the amount of space needed
for the accommodation of the incisors and the amount
of space available for this is called incisor liability.
The incisal liability is roughly about 7 mm in the
maxillary arch and about 5 mm in the mandibular arch
(wayne)
52. THE INCISAL LIABILITY IS OVERCOME BY
THE FOLLOWING FACTORS:
A. Utilization of physiologic spaces seen in
primary dentition.
B. Increase in inter-canine width.
C. Change in incisor inclination
53. INTER-TRANSITIONAL PERIOD
In this period the maxillary and mandibular
arches consist of deciduous and permanent
teeth.
Between the permanent incisors and the first
permanent molars are the deciduous molars and
canines.
This phase during the mixed dentition period is
relatively stable and no change in occur.
54. SECOND TRANSITIONAL PERIOD
The second transitional period is characterized
by the replacement and alignment of the
deciduous molars and canines by the premolars
and permanent cuspids respectively.
The feature of second transitional period are:
1. Leeway space of Nance.
2. Ugly duckling stage.
55. Mixed dentition
Second transitional period
Mandible
Favourable eruption sequence
6-1-2-3-4-5-7
Maxilla
Sequence of eruption
6-1-2-4-5-3-7 or 6-1-2-4-3-5-7
57. LEEWAY SPACE OF NANCE
The combined mesio-distal width of the
permanent canines and premolars is
usually less that of the deciduous
canines and molars.
The surplus space is called Leeway
space of Nance.
The amount of leeway space is greater
in the mandibular arch than in the
maxillary arch.
Maxilla = 1.8 mm
Mandible = 3.4 mm
59. THE UGLY DUCKILNG STAGE
Also known as BROADBENT
PHENOMENON.
It is a transient or self correcting
malocclusion seen in the maxillary
incisor region between 8-9 years of age,
seen during the eruption of the permanent
canines.
As the developing canines erupt, they
displace the roots of the lateral incisors
mesially. This results in transmitting of
the force on to the roots of the central
incisors which also get displaced
mesially.
A resultant distal divergence of the
crowns of the incisors occur leading to
creation of diastema in the incisor region.
This condition usually corrects by itself
when canines erupt as the pressure is
transferred from the roots to the crown of
the incisors.
60. Mixed dentition:
Self correcting anomalies
Mandibular anterior
crowding
Increased intercanine width
Tongue pressure
• Labial movement and
inclination of incisors
63. PERMANENT DENTITION PERIOD
All the teeth have erupted in the oral cavity.
Three types of permanent molar relation
1. Angle’s class 1: mesiobuccal cusp of the maxillary
first permanent molar occludes with the buccal groove
of the mandibular first permanent molar.
2. Angle’s class 2: The distobuccal cusp of the maxillary
first permanent molar occludes with the buccal groove
of the mandibular first permanent molar.
3. Angle’s class 3: The mesiobuccal cusp of the 1st
molar occludes between first and the second
permanent molars.
64. Features of permanent dentition
period
Coinciding the midline
classI molar relationship of
permanent Ist molar
Decrease overjet and overbite
Curve of spee
65. Dentition and occlusal changes in young adults
Curve of Wilson:-
A mediolateral curvature
to occlusal plane
Curve that contacts the
buccal and lingual cusp
tips of posterior teeth
• Maxillary arch
– Slight buccal
inclination
• Mandibular arch
– Lingual
inclination
66. Dentitional and occlusal changes in young adults
Curve of spee
Anteroposterior
direction the occlusal
plane
Inclination of teeth in
lateral view
The average value
2.5 – 3 mm
67. Andrew’s six keys of occlusion
(1960-1964)
Inter- arch
relationship
Molar
Maxillary 1st
• Mesiobuccal cusp
• Mesiolingual cusp
• Distal marginal ridge
The mesiobuccal cusp of the permanent maxillary first molar occludes
in the groove between the mesial and middle buccal cusps of the
permanent mandibular first molar.
68. Andrew’s six keys of occlusion
Mesio-distal crown
Angulation
The gingival portion
of the long axis of
crown is more distal
than the incisal
portion
70. Andrew’s six keys of occlusion:
Labio-lingual crown inclination
The Canines and premolars
negative and similar.
Maxillary first and second molars
More negative than canines and premolars.