Journal of Prevention and Treatment for Stomatological Diseases ›› 2018, Vol. 26 ›› Issue (3): 180-183.doi: 10.12016/j.issn.2096-1456.2018.03.008

• Cinical Study • Previous Articles     Next Articles

Cone-beam computed tomography study of condyle position in high-angle adult female patients with different sagittal skeletal malocclusion

Tao CUI1(), Yuqing DU1, Yu SONG1(), Zhitao SUN2, Fengchun HOU1, Yanling YU1   

  1. 1. Department of Orthodontics, Qingdao Stomatological Hospital, Qingdao 266001, China;
    2. Medical College of Qingdao University, Qingdao 266000, China;
  • Received:2016-12-14 Revised:2017-01-27 Online:2018-03-20 Published:2018-08-31

Abstract:

Objective To measure and compare condyle-related indexes(volume, surface area, anterior space, upper space and posterior space) in adult female patients with different sagittal malocclusions with the aim of providing a reference for clinical treatment. Methods The CBCT database of Qingdao Stomatology Hospital was searched to identify patients with high-angle adult skeletal malformations with the following classifications: classⅠ(n=30), class Ⅱ(n=30), and class Ⅲ(n=30). The CBCT images associated with the sample population were stored according to DICOM3.0 medical digital image communication standards. Mimics10.01 software was used to read and prepare three-dimensional reconstructions of the condylar, and the above-listed indicators were measured and statistically analyzed. Results There were no significant differences between the right and left sides among the three groups (P > 0.05). For parameters including condylar anterior joint space and post-joint space, the differences among the three groups were significant (P < 0.05). There was no significant difference in parameters related to condylar articular space between classⅠand class Ⅱ(P > 0.05). The differences between skeletal classesⅠand Ⅲ and between skeletal ClassesⅡ, and Ⅲ were statistically significant (P < 0.05). Conclusion Condylar position varies among high-angle adult woman with skeletal malocclusions with different sagittal skeletal patterns.

Key words: Skeletal malocclusions, CBCT, Condyle, High angle, Sagittal

CLC Number: 

  • R783.5

Figure 1

The reconstruction process used to determine condylar volume and surface area"

Figure 2

Measurement of condyle position parameters"

Table 1

Comparison of the left and right side condylar parameters in high-angle adult woman with skeletal malocclusions with the same sagittal skeletal pattern x ± s "

组别 髁突体积(mm3 髁突表面积(mm2 关节前间隙(mm) 关节上间隙(mm) 关节后间隙(mm)
骨性Ⅰ类 左侧髁突 2 067.22 ± 410.12 1 016.64 ± 296.25 2.26 ± 0.46 2.66 ± 0.45 2.08 ± 0.34
右侧髁突 2 022.72 ± 455.26 970.63 ± 312.22 2.18 ± 0.35 2.50 ± 0.43 2.01 ± 0.45
t -0.24 -0.39 0.60 0.77 -0.42
P 0.81 0.71 0.56 0.46 0.68
骨性Ⅱ1 左侧髁突 1 787.47 ± 380.79 855.87 ± 170.35 2.05 ± 0.39 2.84 ± 0.63 2.60 ± 0.32
右侧髁突 1 753.19 ± 316.73 820.08 ± 181.19 1.92 ± 0.20 2.64 ± 0.70 2.51 ± 0.33
t -0.57 0.56 1.14 -0.97 0.61
P 0.58 0.59 0.28 0.36 0.56
骨性Ⅲ类 左侧髁突 2 388.61 ± 468.97 1 167.75 ± 139.03 1.80 ± 0.39 2.18 ± 0.47 2.36 ± 0.39
右侧髁突 2 283.82 ± 397.50 1 102.28 ± 181.79 1.68 ± 0.26 2.12 ± 0.42 2.23 ± 0.44
t -1.28 1.63 -0.81 -0.39 0.63
P 0.23 0.14 0.44 0.71 0.55

Table 2

Comparison of condylar position-related parame-ters in high-angle adult woman with skeletal malocclusions with different sagittal skeletal patterns x ± s,mm"

组别 关节前间隙 关节上间隙 关节后间隙
骨性Ⅰ类 2.22 ± 0.40 2.74 ± 0.65 2.04 ± 0.39
骨性Ⅱ1 1.74 ± 0.33 2.58 ± 0.44 2.55 ± 0.32
骨性Ⅲ类 1.98 ± 0.31 2.15 ± 0.43 2.30 ± 0.41
两两比较P Ⅰ-Ⅱ1 < 0.001 0.332 < 0.001
Ⅰ-Ⅲ 0.034 0.011 0.040
1-Ⅲ 0.030 0.001 0.035
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