Regional 3D superimposition to assess temporomandibular joint condylar morphology

被引:52
作者
Schiing, J. [1 ]
Gomes, L. C. R. [2 ]
Benavides, E. [1 ]
Nguyen, T. [3 ]
Paniagua, B. [4 ]
Styner, M. [4 ]
Boen, V. [5 ]
Goncalves, J. R. [2 ]
Cevidanes, L. H. S. [5 ]
机构
[1] Univ Michigan, Sch Dent, Dept Periodont & Oral Med, Ann Arbor, MI USA
[2] Univ Estadual Paulista, UNESP, Araraquara Dent Sch, Dept Orthodont & Pediat Dent, Sao Paulo, Brazil
[3] Univ N Carolina, Sch Dent, Dept Orthodont, Chapel Hill, NC 27599 USA
[4] Univ N Carolina, Sch Med, Dept Psychiat, Chapel Hill, NC USA
[5] Univ Michigan, Dept Orthodont & Pediat Dent, Ann Arbor, MI USA
关键词
temporomandibular joint; reliability; measurements; registration; condyle; morphology; BEAM COMPUTED-TOMOGRAPHY; RESEARCH DIAGNOSTIC-CRITERIA; INTERNAL DERANGEMENTS; RHEUMATOID-ARTHRITIS; IMAGE-ANALYSIS; ACCURACY; CT; OSTEOARTHRITIS; RECONSTRUCTION; SEGMENTATION;
D O I
10.1259/dmfr.20130273
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Objectives: To investigate the reliability of regional three-dimensional registration and superimposition methods for assessment of temporomandibular joint condylar morphology across subjects and longitudinally. Methods: The sample consisted of cone beam CT scans of 36 patients. The across-subject comparisons included 12 controls, mean age 41.3 +/- 12.0 years, and 12 patients with temporomandibular joint osteoarthritis, mean age 41.3 +/- 14.7 years. The individual longitudinal assessments included 12 patients with temporomandibular joint osteoarthritis, mean age 37.8 +/- 16.7 years, followed up at pre-operative jaw surgery, immediately after and one-year post-operative. Surface models of all condyles were constructed from the cone beam CT scans. Two previously calibrated observers independently performed all registration methods. A landmark-based approach was used for the registration of across-subject condylar models, and temporomandibular joint osteoarthritis vs control group differences were computed with shape analysis. A voxel-based approach was used for registration of longitudinal scans calculated x, y, z degrees of freedom for translation and rotation. Two-way random intraclass correlation coefficients tested the interobserver reliability. Results: Statistically significant differences between the control group and the osteoarthritis group were consistently located on the lateral and medial poles for both observers. The interobserver differences were <= 0.2 mm. For individual longitudinal comparisons, the mean interobserver differences were <= 0.6 mm in translation errors and 1.2 degrees in rotation errors, with excellent reliability (intraclass correlation coefficient >0.75). Conclusions: Condylar registration for across-subjects and longitudinal assessments is reliable and can be used to quantify subtle bony differences in the three-dimensional condylar morphology.
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页数:12
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