1
CONCLUSIONS None of the measurements assessed in this study showed position or size asymmetries of the condylar processes that could account for the Class II subdivi- sion malocclusions in this sample. No statistically significant difference was found in the evaluation of anteroposterior symmetry or in the mediolateral sym- metry of the condylar processes when the mean values for the Class I side and the Class II side were compared. The authors would like to thank Professors Marcelo Fraga and Fla ´via Artese for their help with this study. REFERENCES 1. Wertz RA. Diagnosis and treatment planning of unilateral Class II malocclusions. Angle Orthod 1975;45:85-94. 2. Cozzani M, Thomas WM, Gianelly AA. Distalizzazione asim- metrica di molare superiore con magneti: caso clı ´nico. Mondo Ortod 1989;15:687-92. 3. Cheney EA. Dentofacial asymmetries and their clinical signifi- cance. Am J Orthod 1961;47:814-29. 4. Alavi DG, Begole EA, Schneider BJ. Facial and dental arch asymmetries in Class II subdivision malocclusion. Am J Orthod Dentofacial Orthop 1988;13:38-46. 5. Arau ´ jo TM. Avaliac ¸a ˜o de assimetrias no complexo cra ˆnio-dento- facial em pacientes portadores de maloclusa ˜o Classe II, 2a. Divisa ˜o, subdivisa ˜o (Angle) [tesis]. Rio do Janeiro, Brazil: Universidade Federal do Rio de Janeiro; 1989. 6. Arau ´jo TM, Wilhelm RS, Almeida MA. Skeletal and dental arch asymmetries in Class II division 1 subdivision malocclusions. J Clin Ped Dent 1994;18:181-5. 7. Ja ´ger A, Gripp L, Lorch V. Kieferorthopa ¨dische befunde bei patienten mit einseitiger Angle-klasse II. Fortschr Kieferorthop 1993;54:196-202. 8. Rose JM, Sadowsky C, Begole EA, Moles R. Mandibular skeletal and dental asymmetry in Class II subdivision malocclu- sion. Am J Orthod Dentofacial Orthop 1994;105:489-95. 9. Yoshida N, Jost-Brinkmann PG, Miethke RR, Ko ¨ nig M, Yamada Y. An experimental evaluation of effects and side effects of asymmetric face-bows in the light of in vivo measurements of initial tooth movements. Am J Orthod Dentofacial Orthop 1998;113:558-66. 10. Plint DA, Orth D, Ellisdon PS. Facial asymmetries and mandib- ular displacements. Br J Orthod 1974;1:227-35. 11. Ben-Bassat Y, Yaffe A, Brin I, Freeman J, Ehrlich Y. Functional and morphological-occlusal aspects in children treated for uni- lateral posterior cross-bite. Eur J Orthod 1993;15:57-63. 12. Katzberg RW. Temporomandibular joint imaging. Radiology 1989;170:297-307. 13. Larheim TA, Kolbenstvedt A. High resolution computed tomog- raphy of the osseous temporomandibular joint: some normal and abnormal appearances. Acta Radiol 1984;25:465-9. 14. Larheim TA, Bjornland T, Smith HJ, Aspestrand F, Kolbenstvedt A. Imaging temporomandibular joint abnormalities in patients with rheumatic disease. Comparison with surgical observations. Oral Surg Oral Med Oral Pathol 1992;73:494-501. 15. De Bont L, Van Der Kuijl B, Stegenga B, Vencken L, Boering G. Computed tomography in differential diagnosis of temporoman- dibular joint disorders. Int J Oral Maxillofac Surg 1993;22: 200-9. 16. Kahl B, Fischbach R, Gerlach KL. Temporomandibular joint morphology in children after treatment of condylar fractures with functional appliance therapy: a follow-up study using spiral computed tomography. Dentomaxillofac Radiol 1995;24:37-45. 17. Cohen HR, Ross S, Gordon RE, Deutsch A. Computed tomog- raphy in TMJ diagnosis. J Clin Orthod 1985;19:659-62. 18. Cheney EA. The influence of dentofacial asymmetries upon treatment procedures. Am J Orthod 1952;38:934-45. 19. Shroff B, Lindauer SJ, Burstone CJ. Class II subdivision treat- ment with tip-back moments. Eur J Orthod 1997;19:93-101. 20. Mongini F, Schmid W. Craniomandibular and temporomandib- ular joint orthopedics. Berlin: Quintessense; 1989. 21. Cohlmia JT, Ghosh J, Sinha PK, Nanda RS, Currier GF. Tomographic assessment of temporomandibular joints in patients with malocclusion. Angle Orthod 1996;66:27-36. 22. Christiansen EL, Chant TT, Thompson JR, Hasso A, Hinshaw D Jr, Kopp S. Computed tomography of the normal temporoman- dibular joint. Scand J Dent Res 1987;95:499-509. 23. Raustia AM, Pyhtinen J. Computed tomography of the mastica- tory system: a review. Comput Med Imaging Graph 1998;12:97- 105. AAO MEETING CALENDAR 2002 — Philadelphia, Pa, May 3 to 7, Pennsylvania Convention Center 2003 — Hawaiian Islands, May 2 to 9, Hawaii Convention Center 2004 — Orlando, Fla, May 1 to 5, Orange County Convention Center 2005 — San Francisco, Calif, May 21 to 26, Moscone Convention Center 2006 — New Orleans, La, April 29 to May 3, Ernest N. Morial Convention Center 2007 — Honolulu, Hawaii, April 27 to May 1, Hawaii Convention Center 2008 — Denver, Colo, May 16 to 20, Colorado Convention Center American Journal of Orthodontics and Dentofacial Orthopedics Volume 121, Number 4 Vitral and Telles 375

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CONCLUSIONS

None of the measurements assessed in this studyshowed position or size asymmetries of the condylarprocesses that could account for the Class II subdivi-sion malocclusions in this sample. No statisticallysignificant difference was found in the evaluation ofanteroposterior symmetry or in the mediolateral sym-metry of the condylar processes when the mean valuesfor the Class I side and the Class II side were compared.

The authors would like to thank Professors MarceloFraga and Flavia Artese for their help with this study.

REFERENCES

1. Wertz RA. Diagnosis and treatment planning of unilateral ClassII malocclusions. Angle Orthod 1975;45:85-94.

2. Cozzani M, Thomas WM, Gianelly AA. Distalizzazione asim-metrica di molare superiore con magneti: caso clınico. MondoOrtod 1989;15:687-92.

3. Cheney EA. Dentofacial asymmetries and their clinical signifi-cance. Am J Orthod 1961;47:814-29.

4. Alavi DG, Begole EA, Schneider BJ. Facial and dental archasymmetries in Class II subdivision malocclusion. Am J OrthodDentofacial Orthop 1988;13:38-46.

5. Araujo TM. Avaliacao de assimetrias no complexo cranio-dento-facial em pacientes portadores de maloclusao Classe II, 2a.Divisao, subdivisao (Angle) [tesis]. Rio do Janeiro, Brazil:Universidade Federal do Rio de Janeiro; 1989.

6. Araujo TM, Wilhelm RS, Almeida MA. Skeletal and dental archasymmetries in Class II division 1 subdivision malocclusions.J Clin Ped Dent 1994;18:181-5.

7. Jager A, Gripp L, Lorch V. Kieferorthopadische befunde beipatienten mit einseitiger Angle-klasse II. Fortschr Kieferorthop1993;54:196-202.

8. Rose JM, Sadowsky C, Begole EA, Moles R. Mandibularskeletal and dental asymmetry in Class II subdivision malocclu-sion. Am J Orthod Dentofacial Orthop 1994;105:489-95.

9. Yoshida N, Jost-Brinkmann PG, Miethke RR, Konig M, YamadaY. An experimental evaluation of effects and side effects of

asymmetric face-bows in the light of in vivo measurements ofinitial tooth movements. Am J Orthod Dentofacial Orthop1998;113:558-66.

10. Plint DA, Orth D, Ellisdon PS. Facial asymmetries and mandib-ular displacements. Br J Orthod 1974;1:227-35.

11. Ben-Bassat Y, Yaffe A, Brin I, Freeman J, Ehrlich Y. Functionaland morphological-occlusal aspects in children treated for uni-lateral posterior cross-bite. Eur J Orthod 1993;15:57-63.

12. Katzberg RW. Temporomandibular joint imaging. Radiology1989;170:297-307.

13. Larheim TA, Kolbenstvedt A. High resolution computed tomog-raphy of the osseous temporomandibular joint: some normal andabnormal appearances. Acta Radiol 1984;25:465-9.

14. Larheim TA, Bjornland T, Smith HJ, Aspestrand F, KolbenstvedtA. Imaging temporomandibular joint abnormalities in patientswith rheumatic disease. Comparison with surgical observations.Oral Surg Oral Med Oral Pathol 1992;73:494-501.

15. De Bont L, Van Der Kuijl B, Stegenga B, Vencken L, Boering G.Computed tomography in differential diagnosis of temporoman-dibular joint disorders. Int J Oral Maxillofac Surg 1993;22:200-9.

16. Kahl B, Fischbach R, Gerlach KL. Temporomandibular jointmorphology in children after treatment of condylar fractures withfunctional appliance therapy: a follow-up study using spiralcomputed tomography. Dentomaxillofac Radiol 1995;24:37-45.

17. Cohen HR, Ross S, Gordon RE, Deutsch A. Computed tomog-raphy in TMJ diagnosis. J Clin Orthod 1985;19:659-62.

18. Cheney EA. The influence of dentofacial asymmetries upontreatment procedures. Am J Orthod 1952;38:934-45.

19. Shroff B, Lindauer SJ, Burstone CJ. Class II subdivision treat-ment with tip-back moments. Eur J Orthod 1997;19:93-101.

20. Mongini F, Schmid W. Craniomandibular and temporomandib-ular joint orthopedics. Berlin: Quintessense; 1989.

21. Cohlmia JT, Ghosh J, Sinha PK, Nanda RS, Currier GF.Tomographic assessment of temporomandibular joints in patientswith malocclusion. Angle Orthod 1996;66:27-36.

22. Christiansen EL, Chant TT, Thompson JR, Hasso A, Hinshaw DJr, Kopp S. Computed tomography of the normal temporoman-dibular joint. Scand J Dent Res 1987;95:499-509.

23. Raustia AM, Pyhtinen J. Computed tomography of the mastica-tory system: a review. Comput Med Imaging Graph 1998;12:97-105.

AAO MEETING CALENDAR

2002 — Philadelphia, Pa, May 3 to 7, Pennsylvania Convention Center2003 — Hawaiian Islands, May 2 to 9, Hawaii Convention Center2004 — Orlando, Fla, May 1 to 5, Orange County Convention Center2005 — San Francisco, Calif, May 21 to 26, Moscone Convention Center2006 — New Orleans, La, April 29 to May 3, Ernest N. Morial Convention Center2007 — Honolulu, Hawaii, April 27 to May 1, Hawaii Convention Center2008 — Denver, Colo, May 16 to 20, Colorado Convention Center

American Journal of Orthodontics and Dentofacial OrthopedicsVolume 121, Number 4

Vitral and Telles 375