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Development of
Normal
Occlusion in
Children
BY:
Ahmad Wafiq
Mennat Allah Alkaram
Under supervision of:
Professor Nagwa Khattab
Basic Info.
Basic Info.
 Primary dentition roots completed at 3
y
 6s erupt at 6 y
 Lower 3s erupt at 9 years
 Upper 3s erupt at 12 y
Development of normal occlusion
Pre-
dental
stage
Gum pad
Relation
btw gum
pads
Deciduous
stage
Spacing
Bite
Terminal
plans
Mixed
dentation
stage
6-7:
• Early mesial shift
• Incisal liability
• Edge to edge RX
8-9 : ugly duckling stage
10-12 : Late mesial shift
Permanent
dentation
Pre-dental stage : 0-6m
 Alveolar arch is called
gum pad
 In Maxilla => hoarse
shoe shape
 In mandible => U-shape
Gum pad grooves :
 Gingival groove
 Dental groove
 Transvers groove
 Lateral sulcus
Pre-dental stage : 0-6m
Relation of gum pads:
 Anterior open bite.
 Contact at molar area
only.
 Upper gum pad is more
forward = mandibular
retrognethia.
Pre-dental stage : 0-6m
Deciduous dentition stage: 3y
Status of dentition at 3y:
 all deciduous teeth are
erupted.
 Almost all there roots
completed
Spaces available at 3y :
 Generalized spacing : occurs due to jaw growth
 Primate space : Mesial to upper c , Distal to lower
c
Deciduous dentition stage: 3y
Open dentition (type I) Closed dentation (type II)
*Spacing between deciduous
teeth
*No crowding in mandible or
maxilla in permanent stage .
*No spacing between deciduous
teeth
* No crowding in maxilla but there
will be in mandible in permanent
dentition
Generalized spacing : Open type
=> normal
Primate spacing
Normal overbite
Deciduous dentition stage: 3y
Occlusion at 3 years:
Upper E to lower E relation ship at 3 years
could be :
Mixed dentition stage : (6-7y)
Status of dentition
at 6-7 years:
 Upper and
lower 6s are
erupted.
 Upper and
lower incisors
start to erupt
Bite at 6-7y :
Edge to edge :
* ware of primary
anterior
* eruption of 6s.
Mixed dentition stage : (6-7y)
Early mesial shift :
Mesial shift of lower 6
on expanse of
Primate space
Open type dentition
with flush terminal
plan relationship will
result in class I
occlusion .
Mixed dentition stage : (6-7y)
Incisal liability :
The deference btw. Space required for
upper 1,2,3 and the space available
occupied by upper A,B,C.
Corrected by :
• Increase inter canine distance
• Inter-dental spacing
• Labial inclination of upper 1,2,3
Mixed dentition stage : (6-7y)
Status of dentition at 8-9y
:
• Roots of 6s are
completed.
• All permanent incisors
erupted.
• Lower canine erupted.
Mixed dentition stage : (8-9y)
Ugly duckling
Mixed dentition stage : (8-9y)
Deep bite
Mixed dentition stage : (8-9y)
Status of occlusion
at 10-12 years:
• premolars have
erupted.
• 7s erupted.
Occlusion at 10-12 years
Occlusion at 10-12 years
 Leeway space :
The deference btw. The space
occupied by C,D,E and the space
required for 3,4,5.
Maxilla : 0.9mm , Mandible : 1.7
mm.
 Late mesial shift :
Occurs on expanse of leeway
space.
Occlusion at 10-12 years
• ↓ Diastema :
Canines have erupted
• ↑ VD :
Due to eruption of 7s =>
natural bite opener
• Leeway space
closure and late
mesial shift
Development of normal occlusion
Pre-
dental
stage
Gum pad
Relation
btw gum
pads
Deciduous
stage
Spacing
Bite
Terminal
plans
Mixed
dentation
stage
6-7:
• Early mesial shift
• Incisal liability
• Edge to edge RX
8-9 : ugly duckling stage
10-12 : Late mesial shift
Permanent
dentation
Test your self
Plz scan …
Q 1:
Q 2 :
Q 3:
Q 4:
Voice control is one of the behaviour guidance
and classified as:
a. Basic and non-pharmacological technique.
b. Basic and pharmacological technique.
c. Advanced and non-pharmacological technique.
d. Advanced and pharmacological technique.
Q 6:
Protective stabilization is one of the behaviour
guidance and classified as:
a. Basic and non-pharmacological technique.
b. Basic and pharmacological technique.
c. Advanced and non-pharmacological technique.
d. Advanced and pharmacological technique.
Q 7:
Which of the following is basic behaviour
management
a. Ask-Tell-Do
b. Ask-Tell-Ask
c. Ask-Tell-Show
d. Tell-Show-Tell
Q 8:
Which of the following techniques is similar to
pre-visit positive imagery
a. Modelling
b. Verbal communication
c. Non verbal communication
d. Memory restructuring
Q 9:
Which of the following is NOT true about
indications of protective stabilization
a. A child with frequent mouth closure
b. Facilitate dental work under sedation
c. A child with multiple cavities
d. Certain handicapping conditions
Q 10:
Development of normal dental occlusion in children.pptx

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Development of normal dental occlusion in children.pptx

  • 1.
  • 2. Development of Normal Occlusion in Children BY: Ahmad Wafiq Mennat Allah Alkaram Under supervision of: Professor Nagwa Khattab
  • 4. Basic Info.  Primary dentition roots completed at 3 y  6s erupt at 6 y  Lower 3s erupt at 9 years  Upper 3s erupt at 12 y
  • 5. Development of normal occlusion Pre- dental stage Gum pad Relation btw gum pads Deciduous stage Spacing Bite Terminal plans Mixed dentation stage 6-7: • Early mesial shift • Incisal liability • Edge to edge RX 8-9 : ugly duckling stage 10-12 : Late mesial shift Permanent dentation
  • 6. Pre-dental stage : 0-6m  Alveolar arch is called gum pad  In Maxilla => hoarse shoe shape  In mandible => U-shape
  • 7. Gum pad grooves :  Gingival groove  Dental groove  Transvers groove  Lateral sulcus Pre-dental stage : 0-6m
  • 8. Relation of gum pads:  Anterior open bite.  Contact at molar area only.  Upper gum pad is more forward = mandibular retrognethia. Pre-dental stage : 0-6m
  • 9. Deciduous dentition stage: 3y Status of dentition at 3y:  all deciduous teeth are erupted.  Almost all there roots completed
  • 10. Spaces available at 3y :  Generalized spacing : occurs due to jaw growth  Primate space : Mesial to upper c , Distal to lower c Deciduous dentition stage: 3y Open dentition (type I) Closed dentation (type II) *Spacing between deciduous teeth *No crowding in mandible or maxilla in permanent stage . *No spacing between deciduous teeth * No crowding in maxilla but there will be in mandible in permanent dentition
  • 11. Generalized spacing : Open type => normal
  • 14. Occlusion at 3 years: Upper E to lower E relation ship at 3 years could be :
  • 15. Mixed dentition stage : (6-7y) Status of dentition at 6-7 years:  Upper and lower 6s are erupted.  Upper and lower incisors start to erupt
  • 16. Bite at 6-7y : Edge to edge : * ware of primary anterior * eruption of 6s. Mixed dentition stage : (6-7y)
  • 17. Early mesial shift : Mesial shift of lower 6 on expanse of Primate space Open type dentition with flush terminal plan relationship will result in class I occlusion . Mixed dentition stage : (6-7y)
  • 18. Incisal liability : The deference btw. Space required for upper 1,2,3 and the space available occupied by upper A,B,C. Corrected by : • Increase inter canine distance • Inter-dental spacing • Labial inclination of upper 1,2,3 Mixed dentition stage : (6-7y)
  • 19. Status of dentition at 8-9y : • Roots of 6s are completed. • All permanent incisors erupted. • Lower canine erupted. Mixed dentition stage : (8-9y)
  • 21.
  • 22. Deep bite Mixed dentition stage : (8-9y)
  • 23. Status of occlusion at 10-12 years: • premolars have erupted. • 7s erupted. Occlusion at 10-12 years
  • 24. Occlusion at 10-12 years  Leeway space : The deference btw. The space occupied by C,D,E and the space required for 3,4,5. Maxilla : 0.9mm , Mandible : 1.7 mm.  Late mesial shift : Occurs on expanse of leeway space.
  • 25. Occlusion at 10-12 years • ↓ Diastema : Canines have erupted • ↑ VD : Due to eruption of 7s => natural bite opener • Leeway space closure and late mesial shift
  • 26.
  • 27. Development of normal occlusion Pre- dental stage Gum pad Relation btw gum pads Deciduous stage Spacing Bite Terminal plans Mixed dentation stage 6-7: • Early mesial shift • Incisal liability • Edge to edge RX 8-9 : ugly duckling stage 10-12 : Late mesial shift Permanent dentation
  • 30. Q 1:
  • 31. Q 2 :
  • 32. Q 3:
  • 33. Q 4:
  • 34.
  • 35. Voice control is one of the behaviour guidance and classified as: a. Basic and non-pharmacological technique. b. Basic and pharmacological technique. c. Advanced and non-pharmacological technique. d. Advanced and pharmacological technique. Q 6:
  • 36. Protective stabilization is one of the behaviour guidance and classified as: a. Basic and non-pharmacological technique. b. Basic and pharmacological technique. c. Advanced and non-pharmacological technique. d. Advanced and pharmacological technique. Q 7:
  • 37. Which of the following is basic behaviour management a. Ask-Tell-Do b. Ask-Tell-Ask c. Ask-Tell-Show d. Tell-Show-Tell Q 8:
  • 38. Which of the following techniques is similar to pre-visit positive imagery a. Modelling b. Verbal communication c. Non verbal communication d. Memory restructuring Q 9:
  • 39. Which of the following is NOT true about indications of protective stabilization a. A child with frequent mouth closure b. Facilitate dental work under sedation c. A child with multiple cavities d. Certain handicapping conditions Q 10:

Editor's Notes

  1. A
  2. B
  3. D
  4. C
  5. D
  6. A
  7. C
  8. B
  9. A
  10. C