Skeletodental factors affecting chin point deviation in female patients with class III malocclusion and facial asymmetry: a three-dimensional analysis using computed tomography

Baek, Seung‐Hak; Cho, Il-Sik; Chang, Young-Il; Kim, Myung-Jin

doi:10.1016/j.tripleo.2007.03.002

Cited by 118 publications

(88 citation statements)

References 29 publications

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“…Baek et al 10 reported that the asymmetry group had shorter ramus height on the chin-deviated side and greater inclination of the ramus on the opposite side. Although skeletal Class III patients alone were used as subjects in their study.…”

Section: Discussionmentioning

confidence: 99%

“…Kwon et al 9 reported that the main cause of mandibular asymmetry is the mandibular skeletal factors themselves instead of a cranial base deformity. Baek et al 10 examined factors affecting chin point deviation in skeletal Class III malocclusion patients and concluded that facial asymmetries in skeletal Class III patients occur as the result of greater growth and mesial inclination of the ramus and greater maxillary vertical excess at the opposite site.…”

Section: Introductionmentioning

confidence: 99%

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Maxillofacial characteristics affecting chin deviation between mandibular retrusion and prognathism patients

Kim¹,

Palomo²,

Kim³

et al. 2011

The Angle Orthodontist

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Objective: To examine and compare the maxillofacial characteristics affecting chin deviation threedimensionally in facial asymmetry patients with mandibular retrusion and mandibular prognathism. Materials and Methods: Maxillofacial computed tomography (CT) scan data were obtained from 48 orthognathic surgery patients (24 cases of mandibular retrusion and 24 cases of mandibular prognathism) with facial asymmetry. Although chin deviation was assessed on the basis of the ANS-to-menton line on frontal cephalograms, its contributing factors were evaluated on threedimensional CT images. Maxillary height, ramus length, frontal ramal inclination, lateral ramal inclination, mandibular body length, and body height were defined on each side, and right-left differences were calculated and analyzed. Results: In an assessment of chin deviation, subjects in this study showed predominantly left side deviation regardless of the group, and the degree of menton deviation did not reveal significant differences between groups. In a comparison of right-left differences in contributing factors, all values were noted to be greater in the retrusion group, except for body height, which showed no difference between chin-deviated and contralateral sides. In particular, ramus length presented a statistically significant difference between the two groups. Conclusion: Based on the same degree of chin deviation in mandibular prognathism and retrusion in this study, results of right-left differences in contributing factors indicate that chin deviations are expressed easily in mandibular prognathism, whereas they occur only with significant right-left differences in relevant maxillofacial structures in individuals with mandibular retrusion. (Angle Orthod. 2011;81:988-993.)

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Maxillofacial characteristics affecting chin deviation between mandibular retrusion and prognathism patients

Kim¹,

Palomo²,

Kim³

et al. 2011

The Angle Orthodontist

View full text Add to dashboard Cite

show abstract

“…19 A canted maxillary occlusal plane is the representative characteristic of facial asymmetry. Since the advent and popularization of orthognathic surgery, this can easily be corrected.…”

Section: Discussionmentioning

confidence: 99%

Midfacial soft tissue changes after leveling Le Fort I osteotomy with differential reduction

Hwang

Kim

Park

et al. 2012

The Angle Orthodontist

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“…There have been many studies for developing the evaluation methods of facial asymmetry using 3D CT. However the evaluation method of facial asymmetry has not yet been established [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Amount of Facial Asymmetry in a Spherical Coordinate System: A Comparison Before and After Orthognathic Surgery

Lee¹,

Wang²,

Kang³

et al. 2015

Int J Radiol Med Imag

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Background: Facial asymmetry can be evaluated by analyzing some facial lines. The spherical coordinate system is useful to analyze the surgical change to facial lines. This study aims to analyze the amount of asymmetry of facial lines before and after orthognathic surgery using spherical coordinate system from three-dimensional computed tomography (CT). Methods: A retrospective study was carried out on 14 CT scans which were taken from 7 subjects before and after orthognathic surgery (3 males, 4 females, average age of 24 yrs±3 mns). Four bilateral 3D facial lines, ramal height, ramal lateral, ramal posterior and mandibular body lines, were established on each CT scan, and the spherical coordinates (length, midsagittal inclination angle, coronal inclination angle) of each facial line were statistically compared before and after orthognathic surgery. Statistical analysis was done for comparing between before and after surgery in the mental deviation and amount of asymmetry. Results: The menton deviation was statistically significantly reduced by surgery (preoperative 7.67mm±4.46mm, postoperative 2.17 mm±1.58 mm, p <.05). The amount of asymmetry of the facial lines changed after surgery in all subjects, but only the amount of asymmetry of midsagittal inclination angle of mandibular body line was significantly different between before and after surgery (presurgical -7.65±5.67°, postsurgical -1.19±4.64°, p<.05). Conclusion: Facial asymmetry may remain after surgery even with attempts to correct asymmetry by reducing the menton deviation.

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Skeletodental factors affecting chin point deviation in female patients with class III malocclusion and facial asymmetry: a three-dimensional analysis using computed tomography

Cited by 118 publications

References 29 publications

Maxillofacial characteristics affecting chin deviation between mandibular retrusion and prognathism patients

Maxillofacial characteristics affecting chin deviation between mandibular retrusion and prognathism patients

Midfacial soft tissue changes after leveling Le Fort I osteotomy with differential reduction

Amount of Facial Asymmetry in a Spherical Coordinate System: A Comparison Before and After Orthognathic Surgery

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