Analysis of Facial Asymmetry

Choi, Kang Young

doi:10.7181/acfs.2015.16.1.1

Cited by 65 publications

(72 citation statements)

References 31 publications

(37 reference statements)

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“…Canting of ≥ 3° could be recognized as facial asymmetry. 28 Therefore, ramus inclination and mandibular canting in the frontal plane should be assessed for the evaluation of facial asymmetry.…”

Section: Discussionmentioning

confidence: 99%

Cone-beam computed tomography analysis of transverse dental compensation in patients with skeletal Class III malocclusion and facial asymmetry

et al. 2018

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ObjectiveThe purpose of this study was to analyze the transverse dental compensation in reference to the maxillary and mandibular basal bones using cone-beam computed tomography (CBCT) and evaluate the correlations between transverse dental compensation and skeletal asymmetry variables in patients with skeletal Class III malocclusion and facial asymmetry.MethodsThirty patients with skeletal Class I (control group; 15 men, 15 women) and 30 patients with skeletal Class III with menton deviation (asymmetry group; 16 men, 14 women) were included. Skeletal and dental measurements were acquired from reconstructed CBCT images using OnDemand3D 1.0 software. All measurements were compared between groups and between the deviated and nondeviated sides of the asymmetry group. Correlation coefficients for the association between skeletal and dental measurements were calculated.ResultsDifferences in the ramus inclination (p < 0.001), maxillary canine and first molar inclinations (p < 0.001), and distances from the canine and first molar cusp tips to the midmaxillary or midmandibular planes (p < 0.01) between the right and left sides were significantly greater in the asymmetry group than in the control group. In the asymmetry group, the ramus inclination difference (p < 0.05) and mandibular canting (p < 0.05) were correlated with the amount of menton deviation. In addition, dental measurements were positively correlated with the amount of menton deviation (p < 0.05).ConclusionsTransverse dental compensation was correlated with the maxillary and mandibular asymmetry patterns. These results would be helpful in understanding the pattern of transverse dental compensation and planning surgical procedure for patients with skeletal Class III malocclusion and facial asymmetry.

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Section: Discussionmentioning

confidence: 99%

Cone-beam computed tomography analysis of transverse dental compensation in patients with skeletal Class III malocclusion and facial asymmetry

et al. 2018

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“…The mandibular menton is commonly used as a parameter to determine facial asymmetry [11,[19][20][21][22]. An asymmetrical face has a mandibular menton deviation of >2 mm from the midsagittal line [23].…”

Section: Discussionmentioning

confidence: 99%

Proportion of Skeletal and Dental Components in Patients with Facial Asymmetry: A Cephalometry Study

Teora

Sumardi

Widayati

2019

Pesqui. bras. odontopediatria clín. integr.

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Objective: To determine the skeletal and dental components in patients with facial asymmetry treated at the orthodontic specialist clinic of the Faculty of Dentistry, Universitas Indonesia. Material and Methods: This was a descriptive study using secondary data from the tracing of postero-anterior cephalograms of patients aged >14 years 4.2 months for males and >11 years 6.2 months for females using the Grummons analysis. A total of 46 patients were selected through purposive sampling. Data were analyzed using descriptive statistics. Results: The proportions of asymmetric direction based on the deviation of the mandibular menton, maxillary midline, and mandibular midline tending to the left and the right sides of the face were 58.7% and 41.3%, respectively. The skeletal component found in the vertical direction showed a greater mean value difference than that observed in the transverse direction. The mean value difference was greater in the midline of the mandibular teeth than in the maxillary teeth. Conclusion: Facial asymmetry tended more towards the left side of the face than the right side. Moreover, the skeletal component was greater in the vertical direction than the transverse direction. In the transverse direction, it was shown that the left side of the face was larger than the right side. In addition, dental asymmetry was more commonly observed in the midline of the mandibular teeth than the maxillary teeth.

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“…The facial asymmetry can be recognized if the menton is deviated by more than 4 mm [ 3 , 15 ]. Other studies have reported more than 2 mm difference in these points to be recognized as asymmetry [ 6 ]. However, this study used 3 mm as the symmetrical guideline based on threshold of visual perception of facial asymmetry in a facial paralysis model that at least 3 mm of the oral commissure, brow, or both was assessed as facial asymmetry [ 4 ].…”

Section: Discussionmentioning

confidence: 99%

“…The displacement of mandible can influence the modeling process of the TMJ, leading to asymmetry. Even though a small amount of asymmetry in the maxillofacial region is common, there is a critical threshold distance that is considered as asymmetric [ 3 – 6 ]. At the same time many authors have shown no or weak connection between orthodontics treatment and TMDs.…”

Section: Introductionmentioning

confidence: 99%

Analyzing Menton Deviation in Posteroanterior Cephalogram in Early Detection of Temporomandibular Disorder

Boel

Sofyanti

Sufarnap

2017

International Journal of Dentistry

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Introduction Some clinicians believed that mandibular deviation leads to facial asymmetry and it also had a correlation with temporomandibular disorders (TMDs). Posteroanterior (PA) cephalogram was widely reported as a regular record in treating facial asymmetry and craniofacial anomalies. The objective of this study was to analyze the relationship of menton deviation in PA cephalogram with temporomandibular disorders (TMDs) symptoms. Materials and Methods TMJ function was initially screened based on TMD-DI questionnaire. PA cephalogram of volunteer subjects with TMDs (n = 37) and without TMDs (n = 33) with mean age of 21.61 ± 2.08 years was taken. The menton deviation was measured by the distance (mm) from menton point to midsagittal reference (MSR) horizontally, using software digitized measurement, and categorized as asymmetric if the value is greater than 3 mm. The prevalence and difference of menton deviation in both groups were evaluated by unpaired t-test. Result The prevalence of symmetry group showed that 65.9% had no TMDs with mean of 1,815 ± 0,71 mm; in contrast, the prevalence of asymmetry group showed that 95.5% reported TMDs with mean of 3,159 ± 1,053 mm. There was a significant difference of menton deviation to TMDs (p = 0.000) in subjects with and without TMDs. Conclusion There was a significant relationship of menton deviation in PA cephalogram with TMDs based on TMD-DI index.

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Analysis of Facial Asymmetry

Cited by 65 publications

References 31 publications

Cone-beam computed tomography analysis of transverse dental compensation in patients with skeletal Class III malocclusion and facial asymmetry

Cone-beam computed tomography analysis of transverse dental compensation in patients with skeletal Class III malocclusion and facial asymmetry

Proportion of Skeletal and Dental Components in Patients with Facial Asymmetry: A Cephalometry Study

Analyzing Menton Deviation in Posteroanterior Cephalogram in Early Detection of Temporomandibular Disorder

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