Class2 malocclusion /certified fixed orthodontic courses by Indian dental academy
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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
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Class2 malocclusion /certified fixed orthodontic courses by Indian dental academy
- 2. INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
- 4. PURPOSE OF CLASSIFICATION • To localize and quantify any possible skeletal contribution to class2 malocclusion •To identify dental displacement associated with the class2 malocclusion. •To assign the patient to one of the class2 types www.indiandentalacademy.com
- 5. MOYERS CLASSIFICATION Six Horizontal types Five vertical types www.indiandentalacademy.com
- 6. HORIZONTAL TYPES Type A Type B Type C Type D Type E Type F Normal skeletal ,but class2 dental Syndromal types of class2 Mild skeletal features www.indiandentalacademy.com
- 7. TYPE-A (Dental class2) Normal skeletal profile Mand dentition placed normally to its base Max dentition is protracted resulting in class2 molar relation Increased over-jet and over-bite www.indiandentalacademy.com
- 8. TYPE-B (Max excess) Mid-face prominence Normal mandible www.indiandentalacademy.com
- 9. TYPE-C Retrognathic max and mandible Smaller facial dimension Dental protrusion More in females www.indiandentalacademy.com
- 10. TYPE-D Max and mand retrognatism Max dental protrusion www.indiandentalacademy.com
- 11. TYPE-E Max prognathism and dental protrusion Mand dental protrusion www.indiandentalacademy.com
- 12. TYPE-F It is a large heterogeneous group with mild skeletal class2 tendencies It is a milder form of types B,C,D,E. www.indiandentalacademy.com
- 13. VERTICAL TYPES The five vertical types are not as clearly differentiated as the four syndromal horizontal types www.indiandentalacademy.com
- 15. TYPE-1 (Steep mandibular plane or high angle case) Mand plane and occlusal plane are steeper than normal Palate tipped down ACB tipped up www.indiandentalacademy.com
- 16. TYPE-2 “ Square face” MP,PP,OP and ACB are more horizontal www.indiandentalacademy.com
- 17. TYPE-3 PP tipped up ant Dec ant face ht Open bite www.indiandentalacademy.com
- 18. TYPE-4 PP,MP,OP all are tipped down leaving lip line high Horz B www.indiandentalacademy.com
- 19. TYPE-5 PP tipped down ant Deep bite www.indiandentalacademy.com
- 21. A skeletal Class II - fault with the maxilla www.indiandentalacademy.com
- 22. A skeletal Class II - fault with the mandible www.indiandentalacademy.com
- 23. A skeletal Class II - vertical www.indiandentalacademy.com
- 24. DENTAL CLASS-2 Maxillary Dental protrusion Mesial drift of the maxillary first permanent molars Congenital disease or loss of the primary teeth Ectopic molar eruption Interarch tooth size discrepancy Affects only lips www.indiandentalacademy.com
- 25. Primary dentition Pre-adolescents Treatment of class 2 Adolescents Adults www.indiandentalacademy.com
- 26. Pre school children (primary dentition) Flush terminal Distal step Mesial step Mandibular deficiency can be recognized by age 3 www.indiandentalacademy.com
- 27. Growth modification can be used to correct distal step easily As growth continues the discrepancy tends to recur as quickly as it was corrected.( both AP and Vertical skeletal discrepancy) Except in most severe case it is unwise to begin treatment www.indiandentalacademy.com
- 29. In early years of 20th century Pressure against growing face( head gear ) • Angle introduced class 2 elastics to position mandible forward •At later stage in US fixed guide planes were used to force pts to advance the mandible upon closure With advent of ceph it became clear that both elastics and guide planes corrected www.indiandentalacademy.com class2 by mand dental protrusion
- 30. Head gear was re-introduced in 1940s ceph analysis clearly demonstrated not only retraction of upper teeth but also effects on max growth In Europe efforts to stimulate mandibular growth led to the devt of a family of “functional appliances”. www.indiandentalacademy.com
- 56. Thank You www.indiandentalacademy.com Leader in continuing dental education www.indiandentalacademy.com