Facial profile and frontal changes after bimaxillary surgery in patients with mandibular prognathism

Chen, Chun‐Ming; Chen, Michael Yuanchien; Cheng, Jung-Hsuan; Chen, Kwei-Jing; Tseng, Yu-Chuan

doi:10.1016/j.jfma.2017.08.009

Cited by 13 publications

(12 citation statements)

References 22 publications

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“…They also revealed that patients with large clockwise rotation showed a significantly greater tendency towards skeletal relapse than patients with small clockwise rotation. In contrast to previous reports, Chen et al [32] showed that there was a significant correlation between smaller amounts ( 8 mm) of mandibular setback and no correlation between larger amounts (>8 mm). In IVRO, Choi et al [33] reported that the amount of setback can be a key factor in predicting postoperative mandibular relapse.…”

Section: Amount Of Setbackcontrasting

confidence: 77%

Skeletal Stability after Mandibular Setback via Sagittal Split Ramus Osteotomy Verse Intraoral Vertical Ramus Osteotomy: A Systematic Review

Chen

Hwang

Hsiao

et al. 2021

JCM

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Purpose: The purpose of present study was to review the literature regarding the postoperative skeletal stability in the treatment of mandibular prognathism after isolated sagittal split ramus osteotomy (SSRO) or intraoral vertical ramus osteotomy (IVRO). Materials and Methods: The articles were selected from 1980 to 2020 in the English published databases (PubMed, Web of Science and Cochrane Library). The articles meeting the searching strategy were evaluated based on the eligibility criteria, especially at least 30 patients. Results: Based on the eligibility criteria, 9 articles (5 in SSRO and 4 in IVRO) were examined. The amounts of mandibular setback (B point, Pog, and Me) were ranged from 5.53–9.07 mm in SSRO and 6.7–12.4 mm in IVRO, respectively. In 1-year follow-up, SSRO showed the relapse (anterior displacement: 0.2 to 2.26 mm) By contrast, IVRO revealed the posterior drift (posterior displacement: 0.1 to 1.2 mm). In 2-year follow-up, both of SSRO and IVRO presented the relapse with a range from 0.9 to 1.63 mm and 1 to 1.3 mm respectively. Conclusion: In 1-year follow-up, SSRO presented the relapse (anterior displacement) and IVRO posterior drift (posterior displacement). In 2-year follow-up, both of SSRO and IVRO showed the similar relapse distances.

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Section: Amount Of Setbackcontrasting

confidence: 77%

Skeletal Stability after Mandibular Setback via Sagittal Split Ramus Osteotomy Verse Intraoral Vertical Ramus Osteotomy: A Systematic Review

Chen

Hwang

Hsiao

et al. 2021

JCM

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“…Affected patients predominantly complain about inconveniences with mastication, speaking, and pronunciation. Additionally, it may decrease self-confidence and social skills, and then it may consequentially cause problems in the social relationships of patients as well [78].…”

Section: Mandibular Prognathism (Mp)-clinical Features and Manifestationmentioning

confidence: 99%

Orofacial Cleft and Mandibular Prognathism—Human Genetics and Animal Models

Jaruga

Ksiazkiewicz

Kuźniarz

et al. 2022

IJMS

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Many complex molecular interactions are involved in the process of craniofacial development. Consequently, the network is sensitive to genetic mutations that may result in congenital malformations of varying severity. The most common birth anomalies within the head and neck are orofacial clefts (OFCs) and prognathism. Orofacial clefts are disorders with a range of phenotypes such as the cleft of the lip with or without cleft palate and isolated form of cleft palate with unilateral and bilateral variations. They may occur as an isolated abnormality (nonsyndromic—NSCLP) or coexist with syndromic disorders. Another cause of malformations, prognathism or skeletal class III malocclusion, is characterized by the disproportionate overgrowth of the mandible with or without the hypoplasia of maxilla. Both syndromes may be caused by the presence of environmental factors, but the majority of them are hereditary. Several mutations are linked to those phenotypes. In this review, we summarize the current knowledge regarding the genetics of those phenotypes and describe genotype–phenotype correlations. We then present the animal models used to study these defects.

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“…Skeletal class II malocclusion is regarded as a common disease among people [ 1 – 4 ], and its mechanism is either the overgrowing of maxillary, or the deficient of the mandibular [ 5 ]. For the second type, functional mandibular advancement (FMA) has become an effective treatment for skeletal class II malocclusion [ 6 – 8 ], and it is commonly used in adolescence who still have growing potential [ 9 ], usually cervical vertebral maturation stages (CVMS) I–IV [ 10 ], the age may range from 8 to 16 years, by having mandibular forward positioning to stimulate mandibular growing [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

The effect of functional mandibular advancement for adolescent patients with skeletal class II malocclusion on the TMJ: a systematic review and meta-analysis

et al. 2022

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Objectives This study aimed to assess whether functional mandibular advancement (FMA) will cause temporomandibular joint disorders (TMD) or have side effects on temporomandibular joint (TMJ) in adolescent patients. Methods All searched databases, including PubMed, Web of Science, EMBASE, Cochrane Central Register of Controlled Trails and Scopus were searched. Gray literature and unpublished literature was also searched. Randomized controlled trails (RCT) and non-randomized studies of the effects of interventions (NRSI) directly observe the condition of adolescent patients’ TMJ after finishing treatment will be considered to include in our study. According to Cochrane Handbook, Cochrane Collaboration risk of bias tool was used to assess the quality of included RCTs, and Risk of Bias In Non-randomized Studies of Interventions (ROBINS-I) tool was used to assess the quality of included NRSIs. Result Finally 18 researches were evaluated as eligible to include in this study. 5 of the studies were RCTs, 8 were NRSIs and 5 were systematic reviews. The data of RCTs and NRSIs were statistically pooled in meta-analysis. The number of samples under investigated among primary studies was 579 individuals,there were 80 patients who developed temporomandibular symptoms during or after treatment. But all the subjective symptoms disappeared during follow-up time. The statistical outcomes proved that patients received FMA didn’t show more tendency to develop temporomandibular symptoms [I2 = 27%, OR = 0.54, 95%CI (0.33,0.87), p = 0.01]. Conclusion (1) TMJ symptoms may occur during the functional oral appliance wearing, but the symptoms will release or disappear after treatment or during the follow-up period. (2) Less convincing evidence indicates that slightly previous TMD and condyle-glenoid fossa relationship will be improved after treatment. (3) There is TMJ disc anterior displacement observed during treatment, but most of them will return to the normal position later. (4) Moderate evidence support that FMA will not have side effects on TMJ of adolescent patients.

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Facial profile and frontal changes after bimaxillary surgery in patients with mandibular prognathism

Abstract: In the facial profile, the cheek line showed significant advancement postoperatively. The frontal mandibular transverse dimensions were significantly increased.

Cited by 13 publications

References 22 publications

Skeletal Stability after Mandibular Setback via Sagittal Split Ramus Osteotomy Verse Intraoral Vertical Ramus Osteotomy: A Systematic Review

Skeletal Stability after Mandibular Setback via Sagittal Split Ramus Osteotomy Verse Intraoral Vertical Ramus Osteotomy: A Systematic Review

Orofacial Cleft and Mandibular Prognathism—Human Genetics and Animal Models

The effect of functional mandibular advancement for adolescent patients with skeletal class II malocclusion on the TMJ: a systematic review and meta-analysis

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