Comparison of the condyle-fossa relationship between skeletal class III malocclusion patients with and without asymmetry: a retrospective three-dimensional cone-beam computed tomograpy study
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Objective: This study investigated whether temporomandibular joint (TMJ) condyle-fossa relationships are bilaterally symmetric in class III malocclusion patients with and without asymmetry and compared to those with normal occlusion. The hypothesis was a difference in condyle-fossa relationships exists in asymmetric patients. Methods: Group 1 comprised 40 Korean normal occlusion subjects. Groups 2 and 3 comprised patients diagnosed with skeletal class III malocclusion, who were grouped according to the presence of mandibular asymmetry: Group 2 included symmetric mandibles, while group 3 included asymmetric mandibles. Pretreatment three-dimensional cone-beam computed tomography (3D CBCT) images were obtained. Right- and left-sided TMJ spaces in groups 1 and 2 or deviated and non-deviated sides in group 3 were evaluated, and the axial condylar angle was compared. Results: The TMJ spaces demonstrated no significant bilateral differences in any group. Only group 3 had slightly narrower superior spaces (p < 0.001). The axial condylar angles between group 1 and 2 were not significant. However, group 3 showed a statistically significant bilateral difference (p < 0.001); toward the deviated side, the axial condylar angle was steeper. Conclusions: Even in the asymmetric group, the TMJ spaces were similar between deviated and non-deviated sides, indicating a bilateral condyle-fossa relationship in patients with asymmetry that may be as symmetrical as that in patients with symmetry. However, the axial condylar angle had bilateral differences only in asymmetric groups. The mean TMJ space value and the bilateral difference may be used for evaluating condyle-fossa relationships with CBCT.
Abstract
Objective: This study investigated whether temporomandibular joint (TMJ) condyle-fossa relationships are bilaterally symmetric in class III malocclusion patients with and without asymmetry and compared to those with normal occlusion. The hypothesis was a difference in condyle-fossa relationships exists in asymmetric patients. Methods: Group 1 comprised 40 Korean normal occlusion subjects. Groups 2 and 3 comprised patients diagnosed with skeletal class III malocclusion, who were grouped according to the presence of mandibular asymmetry: Group 2 included symmetric mandibles, while group 3 included asymmetric mandibles. Pretreatment three-dimensional cone-beam computed tomography (3D CBCT) images were obtained. Right- and left-sided TMJ spaces in groups 1 and 2 or deviated and non-deviated sides in group 3 were evaluated, and the axial condylar angle was compared. Results: The TMJ spaces demonstrated no significant bilateral differences in any group. Only group 3 had slightly narrower superior spaces (p < 0.001). The axial condylar angles between group 1 and 2 were not significant. However, group 3 showed a statistically significant bilateral difference (p < 0.001); toward the deviated side, the axial condylar angle was steeper. Conclusions: Even in the asymmetric group, the TMJ spaces were similar between deviated and non-deviated sides, indicating a bilateral condyle-fossa relationship in patients with asymmetry that may be as symmetrical as that in patients with symmetry. However, the axial condylar angle had bilateral differences only in asymmetric groups. The mean TMJ space value and the bilateral difference may be used for evaluating condyle-fossa relationships with CBCT.
참고문헌 (22)
- Katsavrias EG, "Condyle and fossa shape in Class II and Class III skeletal patterns: a morphometric tomographic study", Am J Orthod Dentofacial Orthop, 128, pp.337~346 (2005)
- Ahn SJ, "Relationship between temporomandibular joint internal derangement and facial asymmetry in women", Am J Orthod Dentofacial Orthop, 128, pp.583~591 (2005)
- Byun ES, "Relationship between internal derangement of the temporomandibular joint and dentofacial morphology in women with anterior open bite", Am J Orthod Dentofacial Orthop, 128, pp.87~95 (2005)
- Vitral RW, "Temporomandibular joint and normal occlusion: Is there anything singular about it? A computed tomographic evaluation", Am J Orthod Dentofacial Orthop, 140, pp.18~24 (2011)
- Rodrigues AF, "Computed tomography evaluation of the temporomandibular joint in Class I malocclusion patients: condylar symmetry and condyle-fossa relationship", Am J Orthod Dentofacial Orthop, 136, pp.192~198 (2009)
- Pullinger AG, "Relationship of mandibular condylar position to dental occlusion factors in an asymptomatic population", Am J Orthod Dentofacial Orthop, 91, pp.200~206 (1987)
- Cohlmia JT, "Tomographic assessment of temporomandibular joints in patients with malocclusion", Angle Orthod, 66, pp.27~35 (1996)
- Vitral RW, "Computed tomography evaluation of temporomandibular joint alterations in patients with class II division 1 subdivision malocclusions: condyle-fossa relationship", Am J Orthod Dentofacial Orthop, 126, pp.48~52 (2004)
- Zuckerberg Al, "Chapter 26. Anesthesia for orthopedic surgery, In Smith’s anesthesia for infants and children", pp.842~869 (2011), Elsevier Mosby
- Rodrigues AF, "Computed tomography evaluation of the temporomandibular joint in Class II Division 1 and Class III malocclusion patients: condylar symmetry and condyle-fossa relationship", Am J Orthod Dentofacial Orthop, 136, pp.199~206 (2009)
- Pandis N, "A radiographic study of condyle position at various depths of cut in dry skulls with axially corrected lateral tomograms", Am J Orthod Dentofacial Orthop, 100, pp.116~122 (1991)
- Burke G, "Correlations between condylar characteristics and facial morphology in Class II preadolescent patients", Am J Orthod Dentofacial Orthop, 114, pp.328~336 (1998)
- Lee W, "Three-dimensional evaluation of positional change of the condyle after mandibular setback by means of bilateral sagittal split ramus osteotomy", Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 94, pp.305~309 (2002)
- Hilgers ML, "Accuracy of linear temporomandibular joint measurements with cone beam computed tomography and digital cephalometric radiography", Am J Orthod Dentofacial Orthop, 128, pp.803~811 (2005)
- Librizzi ZT, "Cone-beam computed tomography to detect erosions of the temporomandibular joint: Effect of field of view and voxel size on diagnostic efficacy and effective dose", Am J Orthod Dentofacial Orthop, 140, pp.e25~e30 (2011)
- Kim YI, "Conebeam computerized tomography evaluation of condylar changes and stability following twojaw surgery: Le Fort I osteotomy and mandibular setback surgery with rigid fixation", Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 111, pp.681~687 (2011)
- Kook YA, "Evaluation of facial asymmetry with three-dimensional cone-beam computed tomography", J Clin Orthod, 45, pp.112~115 (2011)
- Park JU, "Assessment of asymmetry in a normal occlusion sample and asymmetric patients with three-dimensional cone beam computed tomography: a study for a transverse reference plane", Angle Orthod, 82, pp.860~867 (2012)
- Blackwood HJ, "Pathology of the temporomandibular joint", J Am Dent Assoc, 79, pp.118~124 (1969)
- Westesson PL, "Increased horizontal angle of the mandibular condyle in abnormal temporomandibular joints. A magnetic resonance imaging study", Oral Surg Oral Med Oral Pathol, 72, pp.359~363 (1991)
- Ueki K, "Temporomandibular joint morphology and disc position in skeletal class III patients", J Craniomaxillofac Surg, 28, pp.362~368 (2000)
- Ahn SJ, "Orthodontic effects on dentofacial morphology in women with bilateral TMJ disk displacement", Angle Orthod, 77, pp.288~295 (2007)