1. Orthodontics. Definitions. Stages of development. Problems. Structure
Orthodontics. Definitions. Stages of development. Problems. Structure. The role of local scientists in the development of the discipline. Teeth alignments, bite. Classification dentoalveolar abnormalities and deformities.
Lecture №1

2. Physiological Types of Occlusion
Facial and jaw signs:
Facial signs - symmetrical
- proportionality
Jaw signs correct harmonious
signs:
occlusion
extraoral
Intraoral

3. Physiological Types of Occlusion
right side = left side
Facial signs - symmetrical

4. Physiological Types of Occlusion
Facial signs - proportionality
The upper and lower anterior face heights should be approximately equial

5. Physiological Types of Occlusion
1) orthognatic bite
2) straight bite
3) physiological biprognathism
4) opisthognathic bite

6. Physiological Types of Occlusion
Characteristics of the orthognathic bite
1) the upper frontal teeth
cover the lower ones by 1/3 length
of the lower teeth crowns
1/3
2/3

7. Physiological Types of Occlusion
Characteristics of the orthognathic bite
2) the tubercle of the
upper canine tooth crown is
located between the lower
canine tooth and the 1-st
premolar

8. Physiological Types of Occlusion
Characteristics of the orthognathic bite
3) the centerline between the central incisors of the upper and lower jaws is coinsides

9. Physiological Types of Occlusion
Characteristics of the orthognathic bite
4) the mesial-buccal tubercle of the upper 1-st molar is located in the transverse sulcus of the similar lower tooth

10. Physiological Types of Occlusion
Characteristics of the orthognathic bite
5) every tooth of the upper jaw has two antagonists – similar and standing behind (except for the lower central incisors and upper wisdom teeth)

11. Physiological Types of Occlusion
Characteristics of the orthognathic bite
6) the buccal tubercles of the upper lateral teeth cover the buccal tubercles of the lower ones, and the palatine tubercles of the upper teeth are located between the buccal and lingual tubercles of the lower teeth

12. Physiological Types of Occlusion
Characteristics of the orthognathic bite
7) the upper dental arch is semielliptical, the lower – parabolic; in temporary occlusion – a semicircle on both jaws

13. Physiological Types of Occlusion
Characteristics of the orthognathic bite
8) the dental arches of the upper and lower jaws are symmetrical

14. Physiological Types of Occlusion
Characteristics of the orthognathic bite
9) in the state of central occlusion there is a full occlusive contact between all teeth (except for unerupted ones)

15. Physiological Types of Occlusion
Characteristics of the orthognathic bite
10) in the state of physiological rest an interocclusive space varying within 2 mm arises between dental arches

16. Physiological Types of Occlusion
Characteristics of the straight bite

17. Physiological Types of Occlusion
Characteristics of the physiological biprognatism

18. Physiological Types of Occlusion
Characteristics of the opisthognathic bite

19. Physiological Types of Occlusion
Andrews’ occlusion keys
1-st key

20. Physiological Types of Occlusion
Andrews’ occlusion keys
2-nd key

21. Physiological Types of Occlusion
Andrews’ occlusion keys
3-rd key

22. Physiological Types of Occlusion
Andrews’ occlusion keys
3-rd key

23. Physiological Types of Occlusion
Andrews’ occlusion keys
4-th key

24. Physiological Types of Occlusion
Andrews’ occlusion keys
5-th key

25. Physiological Types of Occlusion
Andrews’ occlusion keys
6-th key
2 mm

26. Pathological Types of Occlusion
1. Prognathic (distal) occlusion

27. Pathological Types of Occlusion
Classification occlusion anomalies by Angle
2. Progenic (mesial) occlusion (3-rd cl)

28. Pathological Types of Occlusion
3. Open occlusion

29. Pathological Types of Occlusion
4. Deep occlusion

30. Pathological Types of Occlusion
5. Cross occlusion
- anterior posterior

31. Pathological Types of Occlusion
6. Neutral occlusion with anomalous position of individual teeth

32. Pathological Types of Occlusion
Classification occlusion anomalies by Angle
Class II div Class II div. 2

33. Pathological Types of Occlusion
Classification occlusion anomalies by Angle
III class