ISSN : 0376-4672
It has been established that disk displacement of the temporomandibular joint(TMJ) can cause mandibular asymmetry in growing subjects. One of the causes of internal derangement of TMJ seems to be the result of poor positioning of the joint structure in unilateral cross bite, and the subsequent occlusal trauma transferred to the functioning unit of the mandible, the joint and disc. Transverse discrepancy of the maxillary and the mandibular posterior dentoalveolar units was often found in mandibular asymmetric subjects. Most of the asymmetry in growing subjects becomes worse with further growth if left untreated. However once sufficient posterior overjet is gained through orthodontic treatment, many cases have shown improvement in facial asymmetry. Furthermore, the position of condyles in computed tomogram(con-beam CT) changed from anatomically unfavorable position to more concentric position.
1. Schellhas KP, Pollei SR, Wilkes CH. Pediatric internal derangements of the temporomandibular joint: effect on facial development. Am J Orthod Dentofacial Orthop 1993;104:51-9.
2. Hans MG, Lieberman J, Goldberg J, Rosencweig G, Bellon E. A comparison of clinical examination, history, and magnetic resonance imaging for identifying orthodontic patients with temporomandibular joint disorders. Am J Orthod Dentofacial Orthop 1992;101:54-9.
3. Lieberman JM, Hans MG, Rozencweig G, Goldberg HS, Bellon EM. MR Imaging of the juvenile temporomandibular joint: preliminary report. Radiology 1992;182:531-4.
4. Katzberg RW, Westesson PL, Tallents RH, Drake CM. Ana- tomic disorders of the temporo mandibular joint disk in asymptomatic subjects. J Oral Maxillofac Surg 1996;54:147-53.
5. Tallents RH, Katzberg RW, Murphy W, Proskin H. Magnetic resonance imaging findings in asymptomatic volunteers and symptomatic patients with temporomandibular disorders. J Prosthet Dent 1996;75:529-33.
6. Brand JW, Nielson KJ, Tallents RH, Nanda RS, Currier GF, Owen WL. Lateral cephalometric analysis of skeletal patterns in patients with and without internal derangement of the temporomandibular joint. Am J Orthod Dentofacial Orthop 1995;107:121-8.
7. Gidarakou IK, Tallents RH, Kyrkanides S, Stein S, Moss ME. Comparison of skeletal and dental morphology in asymptomatic volunteers and symptomatic patients with bilateral degenerative joint disease. Angle Orthod 2003;73:71-8.
8. Tallents RH, Catania J, Sommers E. Temporo mandibular joint findings in pediatric populations and young adults: a critical review. Angle Orthod 1991;61:7-16.
9. Ahn SJ, Lee SP, Nahm DS. Relationship between temporomandibular joint internal derangement and facial asymmetry in women. Am J Orthod Dentofacial Orthop. 2005 Nov;128(5):583-91.
10. Nebbe B, Major PW, Prasad NG. Female adolescent facial pattern associated with TMJ disk displacement and reduction in disk length: part I. Am J Orthod Dentofacial Orthop 1999;116: 168-76.
11. Schellhas KP, Piper MA, Omlie MR. Facial skeleton remodel- ing due to temporomandibular joint degeneration: an imaging study of 100 patients. AJNR Am J Neuroradiol 1990;11: 541-51.
12. Han JW, Kim TW. Dentofacial changes of nonorthodontically treated female patients with TMJ disk displacement: a longitudinal cephalometric study. Korean J Orthod 2010;40(6):398-410.
13. Arnett GW, Milam SB, Gottesman L, Progressive mandibular retrusion-idiopathic condylar resorption. Part I. Am J Orthod Dentofacial Orthop 1996;110:8-15.
14. Arnett GW, Milam SB, Gottesman L, Progressive mandibular retrusion-idiopathic condylar resorption. Part II. Am J Orthod Dentofacial Orthop 1996;110:117-27.
