Improvement in lip appearance (lateral and frontal aspects) following mandibular setback surgery

Tseng, Yu-Chuan; Yang, Chih-Hui; Cheng, Jung-Hsuan; Pan, Chin-Yun; Chou, Szu-Ting; Chen, C.-M.

doi:10.1016/j.jormas.2019.02.010

Cited by 1 publication

(5 citation statements)

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“…Other authors assessed Ch movement in 2 directions (posteriorly and inferiorly) after isolated mandibular setback surgery. 2,[14][15][16] All these studies demonstrated that mandibular setback surgery caused the Ch to move posteriorly, simultaneous with inferior movement of the upper lip. The circular orbicularis oris muscle may cause this posterior movement of the Ch, along with that of the upper and lower lips.…”

Section: Discussionmentioning

confidence: 97%

“…Jung et al 13 investigated hard and soft-tissue changes in patients with mandibular prognathism and facial asymmetry who underwent mandibular setback surgery, and they reported similar results to ours. Other authors assessed Ch movement in 2 directions (posteriorly and inferiorly) after isolated mandibular setback surgery 2,14–16. All these studies demonstrated that mandibular setback surgery caused the Ch to move posteriorly, simultaneous with inferior movement of the upper lip.…”

Section: Discussionmentioning

confidence: 99%

“…The Ch can be used to evaluate facial expressions and its position can be affected by maxillomandibular surgeries. A patient with mandibular prognathism typically has broader and more anteriorly located Chs because of their protruding mandible 2…”

mentioning

confidence: 99%

“…A patient with mandibular prognathism typically has broader and more anteriorly located Chs because of their protruding mandible. 2 During the ongoing process of aging, fat components in certain areas of the face undergo atrophy or hypertrophy. In the midface, the deep medial cheek fat and buccal extension of the buccal fat pad become more inferior and their fat volumes shift inferiorly.…”

mentioning

confidence: 99%

“…Furthermore, only a few retrospective studies have assessed alterations in Ch movement after isolated setback surgery or setback surgery combined with Le Fort I osteotomy. 2,4,[12][13][14][15][16]18 Our study investigated the effect of double jaw orthognathic surgeries on Ch movement in patients with dentofacial deformities; however, there are still no data in the literature that indicate the movement of Ch after isolated mandibular advancement, mandibular advancement with Le Forte I advancement and downgrafting, or mandibular advancement with Le Forte I advancement and impaction surgeries.…”

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confidence: 99%

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Effect of Orthognathic Surgery on Movement of the Cheilion

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et al. 2022

Journal of Craniofacial Surgery

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The cheilion (Ch), corner of the mouth, is the softtissue landmark where the upper and lower lips intersect. Orthognathic surgery can modify Ch position, which can affect facial esthetics. The aims were to evaluate Ch movements resulting from Le Fort I maxillary advancement with maxillary impaction or downgrafting, and with mandibular advancement or setback, and to investigate relationships between surgical movements and Ch movements. The 45 patients had undergone bilateral sagittal split ramus osteotomy with Le Fort I advancement surgery. They were divided into 4 groups according to surgical movement direction. Preoperative and postoperative photographs were calibrated. Standardized methods were used to identify and measure preoperative and postoperative Ch positions. Significant correlations were detected between extent of maxillary downgrafting and inferior movement of the Ch in group 1 (r = 0.988, P = 0.001) and group 3 (r = 0.915, P = 0.001). Also, significant correlations were detected between extent of mandibular advancement and anterior movement of the Ch in group 3 (r = 0.561, P = 0.046) and group 4 (r = 0.661, P = 0.005). The findings indicate that, in patients who undergo bilateral sagittal split ramus osteotomy/Le Fort I surgeries, mandibular advancement moves Ch anteriorly and maxillary downgrafting moves Ch inferiorly.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%