Rakosi’s analysis / dental implant courses
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Rakosi’s analysis / dental implant courses
- 2. Landmarks Points Planes Angles Parameters Interpretation Conclusion Bibliography Contents www.indiandentalacademy.com
- 3. Introduction The various measurements used can be divided into three groups: (1) analysis of the facial skeleton (2) analysis of the jaw bases (3) analysis of the dentoalveolar relationship. www.indiandentalacademy.com
- 7. Saddle Angle Mean is 1230 + 50 www.indiandentalacademy.com
- 9. Articular Angle Mean is 1430 + 60 www.indiandentalacademy.com
- 12. Gonial Angle Mean is 1280 + 70 Age dependent variation By Riolo et al 132-1240 www.indiandentalacademy.com
- 14. Upper Gonial Angle Range 52- 550 www.indiandentalacademy.com
- 15. Lower Gonial Angle Range is 700 -750 www.indiandentalacademy.com
- 16. Analysis of mandibular variations due to rotation. Gonial angle has marked influence on direction of growth, profile changes, and the position of lower incisors. The magnitude of gonial angle is determined by the relation between anterior face height & length of ramus. www.indiandentalacademy.com
- 17. Increased gonial angle is due to adaptation to greater anterior face height. Adaptation may also occur in the posterior part of the facial skeleton due to posterior rotation in tmj with gonial angle unchanged, the basal plane angle will be increased. www.indiandentalacademy.com
- 18. The height of the alveolar processes adapts to a prior large gonial angle resulting in increased anterior face height. www.indiandentalacademy.com
- 19. A large gonial angle may be seen with horizontal growth , if mandible rotates posteriorly. By dividing the gonial angle we are able to assess not only the size of the angle but also its position relative to the cranium, and hence the effect of gonial angle on profile. www.indiandentalacademy.com
- 25. Jarabak’s ratio Jarabak ratio = posterior facial height X100 anterior facial height The range is 62-65% www.indiandentalacademy.com
- 26. RAKOSI`S ANALYSIS:- Angle Mean Actual Saddle Angle 123+ 50 1380 Articular Angle 143 + 60 1430 Gonial Angle 128+ 70 1240 UGA 52- 550 460 LGA 72 – 750 780 Sum of 396+60 4050 PFH (Se-Go) 720 AFH (Na- Me) 125o JR= PFH/AFH X 100 62 – 65 % 57.5o www.indiandentalacademy.com
- 28. References Thomas Rakosi An Atlas & manual of Cephalometric Radiography, 1979, First Edition 40- 54. T.M.Graber, Neumann Removable Orthodontic Appliances, First Edition 102-114. Thomas Graber, Thomas rakosi, Alexander Petrovic Dentofacial Orthopedics with Functional Appliances, 1985 First Edition 92-98. www.indiandentalacademy.com