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Cone-Beam Computed Tomography Assessment of Lower Facial Asymmetry in Unilateral Cleft Lip and Palate and Non-Cleft Patients with Class III Skeletal Relationship
Lin, Yifan1; Chen, Gui1; Fu, Zhen1; Ma, Lian2; Li, Weiran1
刊名PLOS ONE
2015-08-03
DOI10.1371/journal.pone.0130235
10期:8
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Multidisciplinary Sciences
研究领域[WOS]Science & Technology - Other Topics
关键词[WOS]TEMPOROMANDIBULAR-JOINT ; MANDIBULAR ASYMMETRY ; CRANIOFACIAL MORPHOLOGY ; CEPHALOMETRIC RADIOGRAPHY ; CONDYLAR POSITION ; NORMAL OCCLUSION ; DIVISION 1 ; INDIVIDUALS ; ACCURACY ; CHILDREN
英文摘要

Introduction

To evaluate, using cone-beam computed tomography (CBCT), both the condylar-fossa relationships and the mandibular and condylar asymmetries between unilateral cleft lip and palate (UCLP) patients and non-cleft patients with class III skeletal relationship, and to investigate the factors of asymmetry contributing to chin deviation.

Methods

The UCLP and non-cleft groups consisted of 30 and 40 subjects, respectively, in mixed dentition with class III skeletal relationships. Condylar-fossa relationships and the dimensional and positional asymmetries of the condyles and mandibles were examined using CBCT. Intra-group differences were compared between two sides in both groups using a paired t-test. Furthermore, correlations between each measurement and chin deviation were assessed.

Results

It was observed that 90% of UCLP and 67.5% of non-cleft subjects had both condyles centered, and no significant asymmetry was found. The axial angle and the condylar center distances to the midsagittal plane were significantly greater on the cleft side than on the non-cleft side (P=0.001 and P=0.028, respectively) and were positively correlated with chin deviation in the UCLP group. Except for a larger gonial angle on the cleft side, the two groups presented with consistent asymmetries showing shorter mandibular bodies and total mandibular lengths on the cleft (deviated) side. The average chin deviation was 1.63 mm to the cleft side, and the average absolute chin deviation was significantly greater in the UCLP group than in the non-cleft group (P=0.037).

Conclusion

Compared with non-cleft subjects with similar class III skeletal relationships, the subjects with UCLP showed more severe lower facial asymmetry. The subjects with UCLP presented with more asymmetrical positions and rotations of the condyles on axial slices, which were positively correlated with chin deviation.

语种英语
WOS记录号WOS:000358942400005
引用统计
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/64368
专题北京大学口腔医学院_牙周科
北京大学口腔医学院_口腔正畸科
北京大学口腔医学院_外科
作者单位1.Peking Univ, Dept Orthodont, Sch & Hosp Stomatol, Beijing 100871, Peoples R China
2.Peking Univ, Sch & Hosp Stomatol, Dept Oral Maxillofacial Surg, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714
Lin, Yifan,Chen, Gui,Fu, Zhen,et al. Cone-Beam Computed Tomography Assessment of Lower Facial Asymmetry in Unilateral Cleft Lip and Palate and Non-Cleft Patients with Class III Skeletal Relationship[J]. PLOS ONE,2015,10(8).
APA Lin, Yifan,Chen, Gui,Fu, Zhen,Ma, Lian,&Li, Weiran.(2015).Cone-Beam Computed Tomography Assessment of Lower Facial Asymmetry in Unilateral Cleft Lip and Palate and Non-Cleft Patients with Class III Skeletal Relationship.PLOS ONE,10(8).
MLA Lin, Yifan,et al."Cone-Beam Computed Tomography Assessment of Lower Facial Asymmetry in Unilateral Cleft Lip and Palate and Non-Cleft Patients with Class III Skeletal Relationship".PLOS ONE 10.8(2015).
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