Mandibular Orthognathic Surgery

Bloomquist, Dale S.; Lee, Jessica J.; Sullivan, Steven M.

doi:10.1007/978-3-030-91920-7_62

Cited by 4 publications

(3 citation statements)

References 156 publications

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“…With the cephalometric measurements made before the surgery, the advancement and recession rates of the lower and upper jaw are determined. Nowadays, Lefort 1 osteotomy in the maxilla, bilateral sagittal split ramus osteotomy (BSSRO) in the mandible, or a combined bimaksillary surgery are performed [3] .…”

Section: Introductionmentioning

confidence: 99%

Effect of bimaxillary orthognathic surgery on acoustic analysis of vowels

Yaprak,

KAPUKAYA,

Gencel

2023

Preprint

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Aim: Bimaxillary orthognathic double chin surgery is performed for therapeutic purposes in patients with occlusion disorders due to dentofacial deformity. We aimed to show the effect of this procedure on sound acoustics.Materials and Methods: The study was planned as retrospective and cross-sectional. Information about patients who applied to our center due to developmental malocclusion between 2018 and 2020 was examined. A total of 26 patients, 13 males and 13 females, who underwent orthognathic double jaw surgery after orthodontic treatment, were included in the study. Vowel (a,e,i,ı,o,ö,u,ü) recordings of the patients were analyzed before the surgery and at the 6th month after the surgery. Sound recordings were taken with the Audacity program (Open Source Software). The recordings were analyzed with the Praat acoustic analysis program. Before and after surgery for each letter; Fundamental frequency, Shimmer, Jitter and Harmony Noise Ratios were examined. Measurements taken before and after surgery were compared.Results: A decrease in fundamental frequency, jitter, shimmer and harmony noise values was detected. This can be interpreted as an increase in sound quality. A statistically significant change was detected in at least two parameters for each letter.Conclusion: Orthognathic double chin surgery performed due to dentofacial deformity provides an increase in the pronunciation of vowels and voice quality. To increase the reliability of the result, acoustic analysis was performed with multiple parameters.

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Section: Introductionmentioning

confidence: 99%

Effect of bimaxillary orthognathic surgery on acoustic analysis of vowels

Yaprak,

KAPUKAYA,

Gencel

2023

Preprint

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“…O desenvolvimento das osteotomias mandibulares para a correção de deformidades dento-faciais está intimamente relacionado com os avanços científicos na especialidade da Cirurgia Buco-Maxilo-Facial como nenhum outro grupo de técnicas cirúrgicas (Bloomquist & Lee, 2004). Neste cenário, a osteotomia sagital dos ramos mandibulares (OSRM) é considerada um dos procedimentos cirúrgicos que mais sofreu avanços técnicos, e qualquer cirurgião que se proponha a realizar uma cirurgia mandibular deve estar completamente informado sobre as suas indicações, técnica cirúrgica e complicações (Lupori et al, 2000).…”

Section: Introductionunclassified

Avaliação biomecanica in vitro de tecnicas de fixação rigida metalica para osteotomia sagital do ramo mandibular em movimentos de avanço e recuo

Brasileiro¹,

Pásseri²

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“…Ao longo dos anos, os diversos aspectos envolvendo o aprimoramento das técnicas cirúrgicas para correção do prognatismo e do retrognatismo mandibular vêm sendo estudados com o objetivo de conseguir aprimorar a técnica e principalmente os resultados clínicos obtidos.A literatura demonstrou que inúmeros fatores estão relacionados com a recidiva no período pós-operatório, como a idade, gênero, ângulo do plano mandibular no pré-operatório, a quantidade de avanço (Van Sickels et al, 1986), estiramento dos tecidos moles com a criação de um vetor de força posterior(Bloomquist & Lee, 2004), rotação e deslocamento do segmento posterior, duração e método de bloqueio maxilo-mandibular(Watzke et al, 1990), qualidade do preparo ortodôntico pré-operatório, experiência do cirurgião, reabsorção condilar(Moore et al, 1991) e método de fixação dos segmentos osteotomizados(Bailey et al, 2004), fator esse que é o objeto de estudo desse trabalho.…”

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Avaliação de técnicas de fixação interna estável da osteotomia sagital dos ramos mandibulares

Sato¹

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The aim of this research was to evaluate the mechanical resistance, stress distribution and long-term stability of fixation techniques of the sagittal split ramus osteotomy (SSRO). In the first study, five fixation techniques of the SSRO were submitted to finite element analysis: 3 linear screws 90°, 3 linear screws 60°, 3 screws in inverted L arrangement, conventional and locking miniplate with monocortical screws. The results demonstrated that the bicortical screws in inverted L arrangement presented the best stress distribution, followed by linear 90° and linear 60°. The locking system miniplate presented better stress distribution if compared with conventional miniplate and monocortical screws. In the second study, a mechanical, photoelastic and finite element analysis were performed to the so-called hybrid technique, comparing it with bicortical screws in inverted L arrangement and miniplate with monocortical screws. The hybrid technique had an intermediate mechanical resistance between the two traditional fixation techniques, with high stress concentration around the bicortical screw with improvement in the stress distribution around the miniplate. In the third study, skeletal stability was evaluated of three fixation techniques of the SSRO: the hybrid technique, bicortical screws and miniplates with monocortical screws. The results demonstrated no significant statistically difference between the groups, with a positive correlation between the amount of advancement and relapse. From the results obtained in the research, it is possible to conclude that all fixation techniques could be safely applied to sagital split ramus osteotomy.

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Mandibular Orthognathic Surgery

Cited by 4 publications

References 156 publications

Effect of bimaxillary orthognathic surgery on acoustic analysis of vowels

Effect of bimaxillary orthognathic surgery on acoustic analysis of vowels

Avaliação biomecanica in vitro de tecnicas de fixação rigida metalica para osteotomia sagital do ramo mandibular em movimentos de avanço e recuo

Avaliação de técnicas de fixação interna estável da osteotomia sagital dos ramos mandibulares

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