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1.
Braz. j. oral sci ; 23: e241965, 2024. ilus
Article in English | LILACS, BBO | ID: biblio-1527023

ABSTRACT

Aim: This study aims to report the perioperative management of a patient with von Willebrand disease (vWd) who underwent orthognathic surgery. The report follows the guidelines of the Case Report Guidelines (CARE) and focuses on the steps taken to prevent bleeding during the surgical procedure. Methods: A 39-year-old female patient with skeletal Class III was treated with maxillary advancement and mandibular setback. Despite normal test results for ristocetin cofactor activity, measures were taken to prevent bleeding, including atraumatic surgical techniques, use of antifibrinolytic medication, induced hypotension during anesthesia, and preparation of blood products for transfusion during trans and postoperative periods if needed. In the end, these measures were not required. Results: The patient did not experience any bleeding during the surgical procedure or postoperative period, demonstrating the effectiveness of the measures taken to manage their blood dyscrasia. Two years after the surgery, the patient had satisfactory aesthetic and functional results and no evidence of relapse. Conclusion: Thus, this case report demonstrates that vWd does not prevent largescale oral and maxillofacial surgeries such as orthognathic surgery as long as proper precautions are taken pre-, intraand postoperatively


Subject(s)
Humans , Female , Adult , Postoperative Period , von Willebrand Diseases , Orthognathic Surgery
2.
Rev. cir. traumatol. buco-maxilo-fac ; 23(2): 17-25, abr./jun 2023. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1537357

ABSTRACT

Introdução: A osteotomia Le Fort I possibilita a correção de deformidades dentofaciais que envolvem o terço médio da face. Para sua fixação, convencionou-se o emprego de quatro mini-placas nos pilares zigomático-maxilar e nasomaxilar. Propôs-se então, a dispensa da fixação do segmento posterior, surgindo questionamentos relacionados à capacidade biomecânica do sistema. Objetivos: Comparar o estresse biomecânico gerado em três meios distintos de fixação da osteotomia Le Fort I frente ao movimento de avanço sagital linear maxilar de 7mm. Metodologia: Trata-se de uma pesquisa experimental laboratorial, utilizando-se da análise de elementos finitos como ferramenta analítica, a fim de constatar qual das técnicas sofrerá maior estresse biomecânico. Resultados: Constatou-se que o estresse biomecânico gerado é maior quando aplicado em 4 pontos do que quando aplicado em apenas 2 pontos. Conclusão: Os resultados obtidos fornecem informações aos cirurgiões sobre a real necessidade do uso de fixação adicional de acordo com o método de fixação planejado. No entanto, deve ser interpretado de forma cautelosa, considerando-se as limitações deste estudo. Sendo assim, uma análise incipiente, que tem como intuito o fornecimento de evidência científica de grande significância.


Introducción: La osteotomía Le Fort I permite la corrección de deformidades dentofaciales que involucran el tercio medio de la cara. Para su fijación se acordó utilizar cuatro miniplacas en los pilares cigomaticomaxilar y nasomaxilar. Entonces se propuso prescindir de la fijación del segmento posterior, planteando interrogantes relacionados con la capacidad biomecánica del sistema. Objetivos: Comparar el estrés biomecánico generado en tres medios diferentes de fijación de la osteotomía Le Fort I frente a un movimiento de avance sagital lineal maxilar de 7mm. Metodología: Se trata de una investigación experimental de laboratorio, utilizando como herramienta analítica el análisis de elementos finitos, con el fin de comprobar cuál de las técnicas sufrirá un mayor estrés biomecánico. Resultados: Se encontró que el estrés biomecánico generado es mayor cuando se aplica en 4 puntos que cuando se aplica solo en 2 puntos. Conclusión: Los resultados obtenidos brindan información a los cirujanos sobre la necesidad real de utilizar fijación adicional de acuerdo al método de fijación planificado. Sin embargo, debe interpretarse con cautela, considerando las limitaciones de este estudio. Por tanto, un análisis incipiente, que pretende aportar evidencias científicas de gran trascendencia.


Introduction: The Le Fort I osteotomy allows the correction of dentofacial deformities involving the middle third of the face. For its fixation, it was agreed to use four mini plates on the zygomaticomaxillary and nasomaxillary pillars. It was then proposed to dispense with the fixation of the posterior segment, raising questions related to the biomechanical capacity of the system. Objectives: To compare the biomechanical stress generated in three different means of fixation of the Le Fort I osteotomy against a 7mm maxillary linear sagittal advancement movement. Methodology: This is an experimental laboratory research, using finite element analysis as an analytical tool, in order to verify which of the techniques will suffer greater biomechanical stress. Results: It was found that the biomechanical stress generated is greater when applied to 4 points than when applied to only 2 points. Conclusion: The results obtained provide information to surgeons about the real need to use additional fixation according to the planned fixation method. However, it should be interpreted with caution, considering the limitations of this study. Therefore, an incipient analysis, which aims to provide scientific evidence of great significance.


Subject(s)
Osteotomy, Le Fort , Finite Element Analysis , Orthognathic Surgery , Fracture Fixation, Internal
3.
Rev. cir. traumatol. buco-maxilo-fac ; 23(2): 39-43, abr./jun 2023. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1537799

ABSTRACT

Objetivo: discorrer sobre um caso clínico de mordida aberta anterior com uma abordagem de tratamento orto-cirúrgica. Relato de caso: Paciente, leucoderma, sexo feminino, 21 anos, ASA 1, buscou tratamento cirúrgico, após a recomendação do ortodontista. Esta já havia realizado tratamento ortodôntico no período de dois anos, mas sem alcançar resultados satisfatórios. Ao exame clínico, se concluiu uma ausência de assimetria facial significativa e uma paciente face longa. Além de um padrão esquelético classe II, com uma bi-protusão dos incisivos caracterizando uma mordida aberta anterior, no qual, posteriormente foi solicitada a cirurgia para a correção da deformidade dentofacial e maloclusão. Conclusão: Em síntese, após todo o tratamento orto-cirúrgico houve uma melhora significativa da oclusão da paciente, com o posterior ganho da sua autoconfiança e estética facial e, consequentemente, o reestabelecimento da sua função mastigatória, respiratória e fonação.


Objective: discuss a clinical case of anterior open bite with an ortho surgical treatment approach. Case report: Patient, Caucasian, female, 21 years old, ASA 1, sought surgical treatment after orthodontist recommendation. The patient already went through orthodontic treatment for two years, not achieving satisfactory results. On clinical examination, there was an absence of significant facial asymmetry and a long-face. In addition to a class II skeletal pattern, with a bi-protrusion of the incisors characterizing an anterior open bite, in which surgery was later requested to correct the dentofacial deformity and malocclusion. Conclusion: In summary, after ortho-surgical treatment, there was a significant improvement in the patient's occlusion, with substantial increase of her self-confidence and facial aesthetics and consequently, the reestablishment of patient's masticatory, respiratory and phonation function.


Objetivo: discutir un caso clínico de mordida abierta anterior con abordaje de tratamiento ortoquirúrgico. Reporte de caso: Paciente, caucásica, sexo femenino, 21 años, ASA 1, buscó tratamiento quirúrgico, por recomendación del ortodoncista. Ya se había sometido a un tratamiento de ortodoncia durante dos años, pero sin lograr resultados satisfactorios. En el examen clínico, había ausencia de asimetría facial significativa y una cara alargada. Además de un patrón esquelético clase II, con biprotrusión de los incisivos caracterizando una mordida abierta anterior, en la que, posteriormente, se solicitó cirugía para corregir la deformidad dentofacial y maloclusión. Conclusión: En resumen, después de todo el tratamiento ortoquirúrgico, hubo una mejoría signifi cativa en la oclusión de la paciente, con la consiguiente ganancia en su confi anza en sí misma, en su estética facial y en consecuencia, el restablecimiento de su función masticatoria, respiratoria y fonatoria.


Subject(s)
Humans , Female , Adult , Orthognathic Surgery
4.
Int. j. odontostomatol. (Print) ; 17(3): 251-254, sept. 2023. ilus
Article in English | LILACS | ID: biblio-1514378

ABSTRACT

In addition to functionally correcting skeletal facial deformities, orthognathic surgery also has a great impact on aesthetics and facial proportions. However, patients who have soft tissue changes, such as tissue flaccidity, may not achieve an ideal result, and require complementary surgical techniques that promote aesthetic refinement. The literature on less invasive techniques is limited, and therefore, this work aims to report a surgical technique performed concomitantly with genioplasty to refine the harmony of the submandibular region, in a simple and effective way. Patient with skeletal class II deformity, with lack of mandibular definition and submandibular flaccidity, underwent bimaxillary advancement orthognathic surgery with advancement genioplasty to correct chin retrusion. Due to limited results with bone repositioning alone, plication of the suprahyoid musculature was performed in association with the same approach used in the genioplasty. As a result, there was traction in the cervical region, with a consequent decrease in the submental-cervical angle and improvement in submandibular aesthetics. Furthermore, there was no need for extensive surgical intervention and no impairment of the functional results of the orthognathic surgery itself. Therefore, it can be concluded that plication of the suprahyoid musculat ure concomitantly with genioplasty is a technique that promotes aesthetic gains in the cervical region.


Además de corregir funcionalmente las deformidades faciales esqueléticas, la cirugía ortognática también tiene un gran impacto en la estética y las proporciones faciales. Sin embargo, los pacientes que tienen cambios en los tejidos blandos, como la flacidez, pueden no lograr un resultado ideal y requieren técnicas quirúrgicas complementarias que promuevan el refinamiento estético. La literatura sobre técnicas menos invasivas es limitada, por lo que este trabajo tiene como objetivo reportar una técnica quirúrgica realizada concomitantemente con la genioplastia para refinar la armonía de la región submandibular, de manera simple y efectiva. Se trató a un paciente con deformidad esquelética clase II, con falta de definición mandibular y flacidez submandibular, intervenida de cirugía ortognática de avance bimaxilar con genioplastia de avance para corregir la retrusión del mentón. Debido a los resultados limitados solo con el reposicionamiento óseo, se realizó la plicatura de la musculatura suprahioidea en asociación con el mismo abordaje utilizado en la genioplastia. Como resultado, hubo tracción en la región cervical, con la consiguiente disminución del ángulo submentoniano-cervical y mejoría en la estética submandibular. Además, no hubo necesidad de una intervención quirúrgica extensa ni deterioro de los resultados funcionales de la cirugía ortognática en sí. Por lo tanto, se puede concluir que la plicatura de la musculatura suprahioidea concomitantemente con la genioplastia es una técnica que promueve ganancias estéticas en la región cervical.


Subject(s)
Humans , Female , Adult , Orthognathic Surgery/methods , Dentofacial Deformities/surgery , Genioplasty/methods , Esthetics, Dental
5.
Int. j. odontostomatol. (Print) ; 17(3): 327-334, sept. 2023. ilus, tab, graf
Article in English | LILACS | ID: biblio-1514371

ABSTRACT

The mandibular advancements performed in orthognathic surgeries can be stabilized with several techniques when using stable internal fixation. This study aims to comparatively evaluate, in vitro, the mechanical strength in a polyurethane mandibular model for four fixation techniques for sagittal split ramus osteotomy mandibular. 60 samples were divided into 4 groups, with 15 units for each group: group A, group B, group C and group D. Advances of 5 mm were made for each subgroup and fixed with 2.0 mm system plates and monocortical screws in the replicas of human hemimandibles in polyurethane resin. The samples were submitted to mechanical tests of linear loading, being evaluated the peak load and peak deformation. Technique B presented higher peak load (Kgf) and techniques A and B presented higher peak strain (p<0.05). Technique D presented lower peak load and lower peak strain (p<0.05). It is concluded that the study based on the development of new techniques for fixation for sagittal osteotomy of the mandibular ramus is of great importance for the advancement of orthognathic surgery, provided by the technical innovation of more favorable plate models.


Los avances mandibulares realizados en cirugías ortognáticas pueden estabilizarse con varias técnicas cuando se utiliza fijación interna estable. Este estudio tuvo como objetivo evaluar comparativamente, in vitro, la resistencia mecánica en un modelo mandibular de poliuretano para cuatro técnicas de fijación para la osteotomía sagital de la rama mandibular. Se dividieron 60 muestras en 4 grupos, con 15 unidades para cada grupo: grupo A, grupo B, grupo C y grupo D. Se realizaron avances de 5 mm para cada subgrupo y se fijaron con placas de sistema de 2,0 mm y tornillos monocorticales en las réplicas de hemimandíbulas humanas en resina de poliuretano. Las muestras fueron sometidas a pruebas mecánicas de carga lineal, siendo evaluadas la carga máxima y la deformación máxima. La técnica B presentó mayor pico de carga (Kgf) y las técnicas A y B presentaron mayor pico de deformación (p<0,05). La técnica D presentó menor carga máxima y menor tensión máxima (p<0,05). Se concluye que el estudio basado en el desarrollo de nuevas técnicas de fijación para la osteotomía sagital de la rama mandibular es de gran importancia para el avance de la cirugía ortognática, proporcionada por la innovación técnica de modelos de placas más favorables.


Subject(s)
Mandibular Advancement/methods , Osteotomy, Sagittal Split Ramus/methods , Mandible/surgery , Biomechanical Phenomena , Orthognathic Surgery/methods , Fracture Fixation, Internal/methods
6.
Rev. estomatol. Hered ; 33(1): 62-67, ene. 2023. tab
Article in Spanish | LILACS, LIPECS | ID: biblio-1441868

ABSTRACT

La exposición gingival excesiva es una condición conocida como sonrisa gingival. Esta alteración genera en muchos casos insatisfacción y solicitud de tratamiento por parte de los pacientes. Este exceso de exposición gingival podría obedecer a diferentes etiologías como un exceso maxilar en sentido vertical, un labio superior corto e hipermóvil, la erupción pasiva alterada, la extrusión dentoalveolar en el sector anterior o la combinación de estas causas. El enfoque de tratamiento va a depender del diagnóstico, de la complejidad del caso y de las expectativas de cada paciente. Por lo tanto, las rutas terapéuticas principales son el alargamiento de corona clínica, el reposicionamiento labial, la cirugía ortognática o la aplicación de toxina botulínica. Para ello, se debe considerar las ventajas y limitaciones de cada tratamiento estético, para garantizar predictibilidad y éxito.


Excessive gingival exposure is a condition known as a gummy smile. This generates in many cases dissatisfaction and request for treatment by patients. This excess of gingival exposure could be due to different etiologies such as vertical maxillary excess, a short and mobile upper lip, altered passive eruption, dentoalveolar extrusion in the anterior sector or a combination of these causes. The treatment approach will depend on the diagnosis, the complexity of the case and the expectations of each patient. Therefore, the main therapeutic routes are clinical crown lengthening, lip repositioning, orthognathic surgery, or the application of botulinum toxin. For this, the advantages and limitations of each aesthetic treatment must be considered, to guarantee predictability and success.


Subject(s)
Humans , Smiling , Esthetics, Dental , Gingiva , Patients , Orthognathic Surgery
7.
Chinese Journal of Reparative and Reconstructive Surgery ; (12): 879-884, 2023.
Article in Chinese | WPRIM | ID: wpr-981682

ABSTRACT

OBJECTIVE@#To summarize the application and recent development of orthognathic surgery in treating syndromic craniosynostosis.@*METHODS@#The related literature at home and abroad in recent years was extensively reviewed, and the indications, routine procedures, and protocols of orthognathic surgery in the treatment of syndromic craniosynostosis were summarized and analyzed.@*RESULTS@#Craniosynostosis is a common congenital craniofacial malformation. Syndromic craniosynostosis usually involves premature fusion of multiple cranial sutures and is associated with other deformities. Orthognathic surgery is the necessary and effective means to improve the midfacial hypoplasia and malocclusion. Le Fort I osteotomy combined with sagittal split ramus osteotomy are the common surgical options. Orthognathic surgery should combine with craniofacial surgery and neurosurgery, and a comprehensive long-term evaluation should be conducted to determine the best treatment plan.@*CONCLUSION@#Orthognathic surgery plays an important role in the comprehensive diagnosis and treatment of syndromic craniosynostosis. The development of digital technology will further promote the application and development of orthognathic surgery in the treatment of syndromic craniosynostosis.


Subject(s)
Humans , Orthognathic Surgery , Craniosynostoses/surgery , Osteotomy , Osteotomy, Sagittal Split Ramus
8.
Pesqui. bras. odontopediatria clín. integr ; 23: e210238, 2023. tab, graf
Article in English | LILACS, BBO | ID: biblio-1448791

ABSTRACT

ABSTRACT Objective: To determine the effects of orthognathic surgery on oral function and vocal quality in order to assess the need for speech therapy after surgery. Material and Methods: Thirty-seven patients scheduled for mono-jaw surgery, specifically maxillary (G1:15 patients), mandibular advancement (G2:10 patients) or mandibular set-back (G3:12 patients), were recruited for this prospective cohort study. Evaluation of oral functions, video recordings of speech articulation and audio recordings of voice were obtained before surgery (T0), and at 1 (T1) and 6 months (T2) after surgery. Spectrographic analysis and self-evaluation questionnaire regarding the vocal performance (VAPP) were performed. Both qualitative and quantitative statistical analysis was performed, mainly using generalized linear models for dichotomous data (p<0.05). Results: The formant frequencies (F1 and F2) of the main vowels vary after orthognathic surgery according to the type of surgery. Before surgery, 84% of patients analyzed showed difficulties in breathing and positioning the tongue both at rest and swallowing. Thanks to surgical correction of the malocclusion, the major part of these issues were resolved within 6 months. In 25% of cases, a change in the voice and/or articulation had occurred. Conclusion: Vocality improves after orthognathic surgery and it changes in relation to the type of surgery. However, vocality did not normalize completely. Speech assessment should be considered after surgery in order to offer adequate speech therapy if necessary.


Subject(s)
Humans , Male , Female , Adult , Postoperative Complications , Speech Acoustics , Voice Quality , Orthognathic Surgery , Speech Therapy/methods , Spectrography , Surveys and Questionnaires , Data Interpretation, Statistical , Diagnostic Self Evaluation , Malocclusion/surgery
9.
Rev. ADM ; 79(6): 332-337, nov.-dic. 2022. tab, graf
Article in Spanish | LILACS | ID: biblio-1435555

ABSTRACT

Introducción: la asimetría facial es una condición notoria en el tercio inferior de la facie del sujeto y entre los tercios medio y superior, en este último será menos evidente esta condición, de tal manera que podría considerarse como una de las molestias de mayor incidencia en pacientes con necesidades o no de terapia or- todóncica. Objetivo: evaluar mediante una revisión de la literatura los tratamientos ortodóncico-quirúrgicos de pacientes con asimetría facial. Material y métodos: la literatura se seleccionó mediante una búsqueda en las bases de datos electrónicas: PubMed, Scopus, Web of Science. Las palabras clave utilizadas fueron: facial asymmetry, asymmetry, surgical treatment, surgical orthodontic treatment. La búsqueda se restringió a artículos en inglés publicados del año 2011 al 2021. Resultados: después de aplicar los criterios de inclusión y exclusión en total se obtuvieron y revisaron 27 artículos. Se realizó la revisión de literatura del tratamiento ortodóncico-quirúrgico en pacientes con asimetría facial. Conclusión: es preciso el abordaje ortodóntico quirúrgico para la corrección de la asimetría facial, del protocolo dependerá la situación clínica y la elección de tratamiento ortodóntico quirúrgico, lo que brindará mejoras significativas en la simetría facial (AU)


Introduction: facial asymmetry, is a notorious condition in the lower third of the subject's facie and between the middle and upper thirds, in the latter this condition will be less evident; in such a way, it could be considered as one of the discomforts of greater incidence in patients with needs or not of orthodontic therapy. Objective: to evaluate by means of a literature review the orthodontic-surgical treatment of patients with facial asymmetry. Material and methods: the literature was selected through a search in the following electronic databases: PubMed, Scopus, Web of Science. The keywords used were: facial asymmetry, asymmetry, surgical treatment, surgical orthodontic treatment. The search was restricted to articles in English published from 2011 to 2021. Results: after applying the inclusion and exclusion criteria, a total of 27 articles were obtained and reviewed. The literature review of orthodontic-surgical treatment in patients with facial asymmetry was performed. Conclusion: surgical orthodontic approach is necessary for the correction of facial asymmetry, the protocol will depend on the clinical situation, the choice of surgical orthodontic treatment, which will give significant improvements in facial symmetry (AU)


Subject(s)
Humans , Facial Asymmetry/surgery , Facial Asymmetry/therapy , Osteotomy/methods , Orthognathic Surgery/methods
10.
Rev. cir. traumatol. buco-maxilo-fac ; 22(4): 30-35, out.-dez. 2022. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1414826

ABSTRACT

Introdução: A correção das deformidades dentofaciais depende do bom diagnóstico, da precisão do planejamento e da correta execução da técnica cirúrgica. Buscando maior precisão, o planejamento virtual para cirurgia ortognática tem sido uma ferramenta amplamente aplicada pela cirurgia bucomaxilofacial. Este trabalho demonstra, por meio de caso clínico, os benefícios adquiridos pelo planejamento virtual, no que diz respeito a quantificação do movimento, avaliação da predição dos tecidos moles e osteotomias, assim como discorre sobre os cuidados e passos necessários para um correto planejamento. Relato do caso: Paciente de perfil classe II, submetida ao protocolo de planejamento virtual com aquisição de imagens tomográficas, escaneamento intraoral e utilização de software digital para avaliação diagnóstica, planejamento e impressão dos guias cirúrgicos. A mesma foi acompanhada durante 3 meses de pós operatório, apresentando boa precisão e previsibilidade nos movimentos cirúrgicos realizados. Discussão: Ao se realizar uma avaliação clínica acurada, somada a aquisição de imagens tridimensionais, a partir das tomografias de face, escaneamentos intraorais e o manejo da tecnologia CAD/CAM, é possível se alcançar maior precisão no planejamento e predictibilidade cirúrgica, bem como realizar um melhor diagnóstico das deformidades transversas. Contudo, deve-se levar em consideração a necessidade de conhecimento teórico-prático para a correta execução dos passos para o planejamento virtual. Considerações finais: Dado o exposto, foi possível observar precisão no resultado obtido e compatibilidade entre os movimentos planejados e executados. Assim como, demonstrou se aspectos relativos a cada um dos passos para o protocolo virtual, expondo-se suas particularidades e diferenças em relação ao planejamento convencional... (AU)


Introducción: La corrección de las deformidades dentofaciales depende de un buen diagnóstico, de la precisión de la planificación y la correcta ejecución de la técnica quirúrgica . Buscando mayor precisión, la planificación virtual para cirugía ortognática ha sido una herramienta aplicada ampliamente por la cirugia bucomaxilofacial. Este trabajo demuestra, por medio de un caso clínico, los beneficios obtenidos por la planificación virtual, en lo que respecta a la cuantificación del movimiento, evaluación de la predicción de los tejidos blandos y de las osteotomia, así enfatizando los cuidados y pasos necesarios para una correcta planificación. Relato de caso: Paciente con perfil clase II, utilizando protocolo de planificación virtual con adquisición de imágenes tomográficas, escaneamento intra-oral y uso de software digital para evaluación diagnóstica, planificación e impresión 3D de los guías quirúrgicos. La paciente tuvo seguimiento pos operatorio por tres meses, corroborando la precisión y previsibilidad de los movimientos quirúrgicos planificados y ejecutados. Discusión: Al realizarse una evaluación clínica acurada, sumando una adquisición de imágenes tridimensionales, a partir de la tomografía facial, escaneamento intra-oral y el manejo de tecnologia CAD/CAM, es posible alcanzar mayor precisión en la planificación y previsibilidad quirúrgica, así como un diagnóstico más acurado de las alteraciones transversas. Con todo, se debe considerar la necesidad de conocimiento teórico práctico para la correcta elaboración de un proyecto de planificación quirúrgica virtual. Consideraciones finales: Por lo expuesto, se observó precisión en el resultado obtenido considerando los movimientos planificados y ejecutados. Así como se describió aspectos relativos a cada uno de los pasos del protocolo virtual utilizado, exponiendo sus particularidades y diferencias en relación a la planificación quirúrgica convencional... (AU)


Introduction: The correction of dentofacial deformities depends directly on a good diagnosis, the precision of the surgical planning and the correct execution of the technique. Seeking greater precision, virtual planning for orthognathic surgery has been a tool widely applied in oral and maxillofacial surgery. This work demonstrates, through a case report, the benefits acquired by virtual planning, regarding the quantification of movement, evaluation of the prediction of soft tissues and osteotomies, as well as discusses the accuracy and steps necessary for a correct planning. Case report: Class II facial profile patient, submitted to the virtual planning protocol with acquisition of tomographic images, intraoral scanning and use of digital software for diagnostic evaluation, planning and printing of surgical guides. She was followed up for 3 months after the operation, showing good precision and predictability in the surgical movements performed. Discussion: When performing an accurate clinical evaluation, added up to the acquisition of three-dimensional images, from face tomography, intra-oral scans and the management of CAD/CAM technology, it is possible to achieve greater precision in surgical planning and predictability, as well as accomplish a better diagnosis of transverse deformities. However, one must take into account the need for theoretical practical knowledge for the correct execution of the steps for virtual planning. Final considerations: Given the above, it was possible to observe precision in the result obtained and compatibility between the planned and executed movements. As well, aspects related to each of the steps for the virtual protocol were demonstrated, exposing their particularities and differences in relation to conventional planning... (AU)


Subject(s)
Humans , Female , Young Adult , Osteotomy , Congenital Abnormalities , Aftercare , Imaging, Three-Dimensional , Surgery, Computer-Assisted , Equipment and Supplies , Orthognathic Surgery , Dentofacial Deformities
11.
Rev. cuba. estomatol ; 59(4)dic. 2022.
Article in Spanish | LILACS, CUMED | ID: biblio-1441581

ABSTRACT

Introducción: La cirugía ortognática está especialmente indicada en casos complejos, donde los procedimientos conservadores fracasan o son insuficientes. El diagnóstico, planificación y tratamiento deben estar a cargo de un equipo multidisciplinario que trabaje en estrecha relación. Objetivo: Reportar el trabajo multidisciplinario en el tratamiento ortodóncico quirúrgico de una desarmonía dentomaxilofacial compleja. Presentación de caso: Paciente masculino, 19 años de edad, mestizo, clase III esquelética grave, hiperdivergente con mordida abierta y asimetría del tercio inferior, que recibió tratamiento prequirúrgico descompensador de ortodoncia. Se realizó cirugía ortognática bimaxilar con genioplastia de ascenso. Conclusiones: El tratamiento de las desarmonías dentomaxilofaciales es complejo y necesita la concurrencia de varias especialidades. Para la resolución del presente caso fue necesario el trabajo coordinado y simultáneo de especialistas de ortodoncia, prótesis dental, cirugía maxilofacial, periodoncia, psicología y otorrinolaringología. Se alcanzaron resultados estéticos y funcionales acorde a los objetivos del tratamiento propuestos y hubo estabilidad un año después de la cirugía(AU)


Introduction: Orthognathic surgery is especially indicated in complex cases, where conservative procedures fail or are insufficient. Diagnosis, planning and treatment should be carried out by a multidisciplinary team that works closely together. Objective: Report the multidisciplinary work in the surgical orthodontic treatment of a complex dentomaxillofacial disharmony. Case presentation: Male patient, 19 years old, mestizo, severe skeletal class III, hyperdivergent with open bite and asymmetry of the lower third, who received presurgical treatment decompensating orthodontics. Bimaxillary orthognathic surgery was performed with ascent genioplasty. Conclusions: The treatment of dentomaxillofacial disharmonies is complex and requires the concurrence of several specialties. For the resolution of this case, the coordinated and simultaneous work of specialists in orthodontics, dental prostheses, maxillofacial surgery, periodontics, psychology and otolaryngology was necessary. Aesthetic and functional results were achieved according to the proposed treatment objectives and there was stability one year after surgery(AU)


Subject(s)
Humans , Male , Adult , Open Bite/diagnosis , Facial Asymmetry/therapy , Orthognathic Surgical Procedures/methods , Orthognathic Surgery/methods
12.
Rev. cuba. estomatol ; 59(3)sept. 2022.
Article in Spanish | LILACS, CUMED | ID: biblio-1441571

ABSTRACT

Introducción: La corrección del exceso vertical del maxilar traerá no solo cambios verticales en el perfil, sino también sagitales y transversales. La ausencia clínica de mordida cruzada posterior puede enmascarar deficiencias del ancho y provocar planes de tratamiento incorrectos. Objetivo: Describir los aspectos más importantes en la atención de un caso con exceso vertical y deficiencia transversal del maxilar sin mordida cruzada posterior. Presentación de caso: Paciente femenina de 26 años de edad acude a consulta por "dientes hacia adelante". El examen físico y el estudio de los medios diagnósticos permitieron concluir la existencia de exceso vertical y deficiencia transversal del maxilar. Clínicamente no se observó mordida cruzada posterior. El tratamiento por etapas incluyó ortodoncia, expansión e impactación quirúrgica del maxilar. Conclusiones: El ascenso quirúrgico del maxilar debe planificarse a partir de un análisis holístico. Incluye los cambios sagitales del perfil y de la relación transversal entre las arcadas, provocados por el efecto de rotación mandibular. La ausencia de mordida cruzada posterior no excluye la existencia de deficiencia transversal del maxilar. Asimismo, la dimensión definitiva de la expansión debe establecerse una vez que la arcada inferior alcance sus dimensiones definitivas(AU)


Introduction: The correction of the vertical excess of the maxilla will bring not only vertical changes in the profile, but also sagittal and transverse ones. The clinical absence of posterior crossbite can mask width deficiencies and lead to incorrect treatment plans. Objective: Describe the most important aspects in the care of a case with vertical excess and transverse deficiency of the maxilla without posterior cross bite. Case presentation: A 26-year-old female patient comes to the consultation for "teeth forward". The physical examination and the study of the diagnostic means allowed to conclude the existence of vertical excess and transverse deficiency of the maxilla. Clinically, no posterior crossbite was observed. Staged treatment included orthodontics, expansion and surgical impaction of the maxilla. Conclusions: The surgical ascent of the maxilla should be planned based on a holistic analysis. It includes the sagittal changes of the profile and the transverse relationship between the arcades, caused by the effect of mandibular rotation. The absence of posterior crossbite does not exclude the existence of transverse maxillary deficiency. Likewise, the definitive dimension of the expansion must be established once the lower arcade reaches its definitive dimensions(AU)


Subject(s)
Humans , Female , Adult , Orthognathic Surgery/methods
13.
Rev. cir. traumatol. buco-maxilo-fac ; 22(2): 6-11, abr.-jun. 2022. ilus, tab
Article in Portuguese | LILACS, BBO | ID: biblio-1398969

ABSTRACT

Objetivo: O objetivo do presente estudo foi avaliar retrospectivamente as mudanças ocorridas nas vias aéreas superiores (VAS) pós cirurgia ortognática bimaxilar. Metodologia: A amostra compreendeu 14 pacientes, que foram divididos em dois grupos, conforme o tipo de movimentação realizada na cirurgia: grupo 1 (n = 6), avanço bimaxilar; grupo 2 (n = 8) cirurgia de avanço de maxila e recuo de mandíbula. Foram realizadas tomografias computadorizadas no pré-operatório (T0) e pós-operatório de 1 ano (T1). Através do software Dolphin Imaging procedeu-se a análise das VAS em três parâmetros: área total (AT), volume total (VT) e área axial mínima (AAM), que foram comparadas entre T0 e T1 em um mesmo grupos pelo Teste de Wilcoxon e entre grupos pelos Teste de Mann-Whitney (p < 0.05). Resultados: Ambos os grupos apresentaram aumento significativo de AT, VT e AAM entre T0 e T1. Contudo, essas variações foram estatisticamente maiores no grupo 1 quando comparadas ao grupo 2. Conclusão: As cirurgias bimaxilares promoveram o aumento da AT, VT e AAM das VAS e essas mudanças foram significativamente superiores nos pacientes submetidos ao avanço bimaxilar... (AU)


Objective: The objective of the present study was to retrospectively evaluate the changes that occurred in the upper airways (UAS) after bimaxillary orthognathic surgery. Methodology: The sample comprised 14 patients, who were divided into two groups, according to the type of movement performed in the surgery: group 1 (n = 6), bimaxillary advancement; group 2 (n = 8) maxillary advancement and mandibular setback surgery. Computed tomography scans were performed preoperatively (T0) and 1 year postoperatively (T1). Through the Dolphin Imaging software, the analysis of the UAS was carried out in three parameters: total area (TA), total volume (TV) and minimum axial area (MAA), which were compared between T0 and T1 in the same groups by the Wilcoxon Test and between groups by the Mann-Whitney test (p < 0.05). Results: Both groups showed a significant increase in TA, TV and MAA between T0 and T1. However, these variations were statistically higher in group 1 when compared to group 2. Conclusion: Bimaxillary surgeries promoted an increase in the TA, TV and MAA of the UAS and these changes were significantly higher in patients undergoing bimaxillary advancement... (AU)


Objetivo: El objetivo del presente estudio fue evaluar retrospectivamente los cambios ocurridos en las vías aéreas superiores (VAS) después de la cirugía ortognática bimaxilar. Metodología: La muestra estuvo compuesta por 14 pacientes, quienes fueron divididos en dos grupos, según el tipo de movimiento realizado en la cirugía: grupo 1 (n = 6), avance bimaxilar; grupo 2 (n = 8) cirugía de avance maxilar y retroceso mandibular. Las tomografías computarizadas se realizaron antes de la operación (T0) y 1 año después de la operación (T1). A través del software Dolphin Imaging se realizó el análisis de la VAS en tres parámetros: área total (AT), volumen total (VT) y área axial mínima (AAM), los cuales fueron comparados entre T0 y T1 en los mismos grupos por el Prueba de Wilcoxon y entre grupos por la prueba de Mann Whitney (p < 0,05). Resultados: Ambos grupos mostraron un aumento significativo de AT, VT y AAM entre T0 y T1. Sin embargo, estas variaciones fueron estadísticamente mayores en el grupo 1 en comparación con el grupo 2. Conclusión: Las cirugías bimaxilares promovieron un aumento de la AT, VT y AAM de las VAS y estos cambios fueron significativamente mayores en los pacientes sometidos a avance bimaxilar... (AU)


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Orthognathic Surgery , Dentofacial Deformities , Mandible/surgery , Maxilla/surgery , Airway Management
14.
Rev. cuba. estomatol ; 59(2): e3911, abr.-jun. 2022. tab, graf
Article in Spanish | LILACS, CUMED | ID: biblio-1408385

ABSTRACT

Introducción: La discrepancia transversal de las arcadas es un problema esquelético poco estudiado en personas con necesidad de tratamiento ortodóncico quirúrgico. Objetivo: Caracterizar a pacientes con discrepancia negativa transversal del maxilar y necesidad de tratamiento por cirugía ortognática. Métodos: Se realizó un estudio descriptivo de corte transversal en 25 expedientes clínicos de pacientes que acudieron al servicio de cirugía maxilofacial del Hospital Clínico Quirúrgico Hermanos Ameijeiras, con discrepancia negativa transversal del maxilar y necesidad de cirugía ortognática entre enero de 2016 y enero de 2020. Se estudiaron los casos por medio de variables cualitativas divididas en epidemiológicas, características faciales y mediciones dentarias. Para el análisis se confeccionaron cuadros estadísticos y como medidas de resumen se utilizaron frecuencias absolutas y relativas. Resultados: La frecuencia de la discrepancia negativa del maxilar fue de 13,3 por ciento. Los pacientes de piel blanca fueron los más afectados (80 por ciento) y el principal motivo de consulta fue estético (68 por ciento). La asimetría del tercio inferior y el perfil cóncavo estuvieron presentes en el 44 por ciento y 36 por ciento de los casos respectivamente. Se observó alta frecuencia de pacientes con el tercio inferior aumentado (76 por ciento), mordida cruzada posterior (48 por ciento), mordida abierta anterior (75 por ciento), apiñamiento en la arcada inferior (63,3 por ciento) y lingualización del incisivo inferior (72 por ciento). Conclusiones: La discrepancia negativa transversal del maxilar es frecuente en personas con necesidad de cirugía ortognática y con gran afectación estética. Se observó mayor predisposición a padecerla en pacientes de piel blanca(AU)


Introduction: Transverse discrepancy of the arches is a skeletal problem not sufficiently studied in persons requiring surgical orthodontic treatment. Objective: Characterize patients with negative transverse maxillary discrepancy requiring surgical orthognathic surgery. Methods: A descriptive cross-sectional study was conducted of 25 medical records of patients attending the maxillofacial surgery service at Hermanos Ameijeiras Clinical Surgical Hospital with negative transverse maxillary discrepancy requiring orthognathic surgery from January 2016 to January 2020. The cases were studied with qualitative variables divided into epidemiological, facial features and dental measurements. Analysis was based on statistical charts. The summary measurements used were absolute and relative frequencies. Results: The frequency of negative maxillary discrepancy was 13.3 percent. White skin patients were more commonly affected (80 percent). The main concern was aesthetic (68 percent). Lower third asymmetry and a concave profile were present in 44 percent and 36 percent of the cases, respectively. A high frequency was observed of patients with an augmented lower third (76 percent), posterior crossbite (48 percent), anterior open bite (75 percent), lower arch crowding (63.3 percent) and lower incisor lingualization (72 percent). Conclusions: Negative transverse maxillary discrepancy is common among patients requiring orthognathic surgery for large aesthetic alterations. White skin patients were found to be more prone to present this disorder(AU)


Subject(s)
Humans , Orthognathic Surgery/methods , Jaw Abnormalities/etiology , Surgery, Oral , Medical Records , Cross-Sectional Studies
15.
Article in English | LILACS | ID: biblio-1410607

ABSTRACT

Among the treatment options for Obstructive Sleep Apnea (OSA) we have surgery to correct dentofacial deformities. OSA patients are routinely and predictably submitted to surgical treatment for dentofacial deformities. Frequently, orthognathic surgery and osseointegrated implants may be necessary to enable fixed rehabilitation. Patients submitted to orthognathic surgery have a transient decrease in blood supply after maxillary and mandibular osteotomy procedures, which can impair the results in these cases. This case report aimed to present and discuss the conflicting situation of an OSA patient in need of orthognathic surgery and dental implants. The treatment consisted of: (1) extraction of all teeth; (2) complete rehabilitation of the upper and lower jaw with dental implants and prosthesis without compensation; (3) bimaxillary orthognathic surgery to re-establish the maxillomandibular relationship and increase the upper airway volume. This rehabilitation sequence was a safe alternative for a case of Class II OSA, and rapidly achieved a final restoration with enhanced esthetics, functionality, biomechanics, maintenance of oral hygiene, and patient satisfaction (AU)


Entre as opções de tratamento da Apneia Obstrutiva do Sono (AOS) temos a cirurgia para correção das deformidades dentofaciais. Freqüentemente, a combinação de cirurgia ortognática e implantes osseointegráveis pode ser necessária para permitir a reabilitação dental. Pacientes submetidos à cirurgia ortognática apresentam diminuição transitória do suprimento sanguíneo após procedimentos de osteotomia maxilar e mandibular, o que pode prejudicar os resultados nestes casos. Este relato de caso teve como objetivo apresentar e discutir a situação de um paciente com AOS que necessita de cirurgia ortognática e implantes dentários. O tratamento consistiu em: (1) extração de todos os dentes; (2) reabilitação completa da mandíbula superior e inferior com implantes dentários e próteses sem compensação; (3) cirurgia ortognática bimaxilar para restabelecer a relação maxilomandibular e aumentar o volume das vias aéreas superiores. Essa sequência de reabilitação foi uma alternativa segura para um caso de AOS Classe II, e rapidamente alcançou uma reabilitação com estética, funcionalidade, biomecânica aprimorada, manutenção da higiene oral e satisfação do paciente


Subject(s)
Humans , Female , Middle Aged , Dental Prosthesis, Implant-Supported , Sleep Apnea, Obstructive/surgery , Orthognathic Surgery , Dentofacial Deformities/surgery
16.
Natal; s.n; 25 fev. 2022. 36 p. tab, ilus, graf.
Thesis in Portuguese | LILACS, BBO | ID: biblio-1532963

ABSTRACT

O objetivo deste estudo laboratorial foi avaliar a acurácia dos modelos digitais obtidos por duas técnicas de escaneamento (escâner intraoral - Itero 5d Element® - e escâner de bancada -Straumann ®) de um modelo experimental (Nacional Ossos ®) da arcada superior confeccionada em poliuretano e do modelo de gesso obtido desta arcada. Os pontos A ­ 3mm acima do elemento 17; B ­ 3mm acima do elemento 14; C ­ 3mm acima do elemento 24; D ­ 3mm acima do elemento 27; E ­ cúspide mesiovestibular do elemento 16; F - ponto de contato mais incisal entre os elementos 11 e 21; G - Cúspide mesiovestibular do elemento 26 foram utilizados como referência para as medidas realizadas. As medidas foram realizadas em um software (Geomagic®) de simulação cirúrgica e analisadas quanto a validade e precisão das técnicas de escaneamento utilizadas em todos os grupos (1 a 5). O grupo 1 corresponde ao grupo padrão-ouro; o 2 ao grupo do escaneamento com escâner intraoral do modelo de poliuretano; o 3 ao escaneamento de bancada do modelo; o 4 ao escaneamento com escâner intraoral do modelo de gesso; e 5 ao escaneamento de bancada do modelo de gesso. Na análise da validação, todas as técnicas apresentaram-se válidas quando comparadas ao grupo controle com exceção da medida FG que apresentou diferenças estatisticamente significativas (p<0,05) entre os grupos 1 e 2. A precisão foi avaliada através do índice de correlação intraclasse (CCI) e todas as técnicas apresentaram-se altamente precisas com (CCI) próximo de 1. Desta forma, conclui-se que o escâner intraoral e o escâner de bancada utilizados neste estudo foram confiáveis quando comparados ao grupo controle e que os dois modelos de escâner utilizados se apresentaram com alta precisão (AU).


The objective of this experimental study was to evaluate the accuracy of digital models generated by two scanning techniques (intraoral scanner - Itero 5d Element® - and desktop scanner -Straumann ®) of an experimental model of the upper arch (Nacional Ossos ®) made of polyurethane and the plaster model obtained from this arch. Points A ­ 3mm above element 17; B ­ 3mm above element 14; C ­ 3mm above element 24; D ­ 3mm above element 27; E ­ mesiobuccal cusp of element 16; F - most incisal point of contact between elements 11 and 21; G - Mesiobuccal cusp of element 26 were used as a reference for the measurements performed. The measurements were performed in a surgical simulation software (Geomagic ®) and analyzed for the validity and precision of the scanning techniques used in all groups (1 to 5). Group 1 corresponds to the gold standard group; 2 to the scanning group with intraoral scanner of the polyurethane model; 3 to the desktop scan of the model; 4 to intraoral scanner scanning of the plaster model; and 5 to the desktop scan of the plaster model. In the validation analysis, all techniques showed to be valid compared to the control group, except the FG measure, which showed statistically significant differences (p<0.05) between groups 1 and 2. Precision was assessed using the intraclass correlation(ICC) index, and all techniques were highly accurate with an ICC close to 1. Thus, it is concluded that the intraoral scanner and the bench scanner used in this study were reliable compared to the control group and that the two scanner models used presented themselves with high precision (AU).


Subject(s)
Imaging, Three-Dimensional/instrumentation , Models, Dental/trends , Orthognathic Surgery , Dimensional Measurement Accuracy , Statistics, Nonparametric , Clinical Laboratory Techniques
17.
Fisioter. Mov. (Online) ; 35: e35105, 2022. tab, graf
Article in English | LILACS | ID: biblio-1364848

ABSTRACT

Abstract Introduction: Dentofacial deformity (DFD) and the breathing mode can change the head posture. However, head posture changes after orthognathic surgery are controversial, and no studies were found on the relationship between the head posture and breathing mode in adults with DFD. Objective: To identify the main head posture changes in young adults affected by DFD, to verify if orthognathic surgery modifies the breathing mode and head posture, and if the breathing mode is associated with the head posture. Methods: Twenty-five young adults were assessed and divided in dentofacial deformity group (DFD; n = 15; x̅ = 28 years) and control group with dentofacial harmony (CG; n = 10; balanced by gender and age with the study group). Breathing mode was evaluated according to the orofacial myofunctional evaluation protocol, and biophotogrammetry was used in the head posture analyses. For the DFD group, the evaluations were performed pre and post the orthognathic surgery (pre- and post-DFD). Results: For the DFD group, the breathing mode modified after orthognathic surgery (p = 0.003), but with difference from GC (p = 0.027). No changes were found in head posture after orthognathic surgery, but significant difference was seen between post-DFD and GC for head inclination (p = 0.017). No relationship was observed between breathing mode and head posture (p > 0.05). Conclusion: After orthognathic surgery, a spontaneous improvement of breathing was seen in the sample. It was not possible to verify changes in head posture and association with breathing mode and head posture.


Resumo Introdução: A deformidade dentofacial (DDF) e o modo respiratório podem alterar a postura de cabeça. Entretanto as modificações da postura de cabeça após a cirurgia ortognática são controversas e não foram encontrados estudos que apontassem relação entre a postura de cabeça e o modo respiratório em adultos com DDF. Objetivo: Identificar as principais alterações na postura de cabeça em adultos jovens com DDF, verificar se a cirurgia ortognática altera o modo respiratório e a postura de cabeça e se o modo respiratório está associado com a postura de cabeça. Métodos: Foram avaliados 25 jovens adultos, os quais foram divididos no grupo deformidade dentofacial (DDF; n = 15; x̅ = 28 anos) e grupo controle com harmonia dentofacial (GC; n = 10; equilibrados por gênero e idade com o grupo de estudo). O modo respiratório foi analisado de acordo com o protocolo de avaliação miofuncional orofacial e a postura de cabeça foi avaliada por meio da biofotogrametria. Para o grupo DDF, as avaliações foram realizadas antes e após a cirurgia ortognática (pré e pós-DDF). Resultados: Para o grupo DDF, o modo respiratório se modificou após a cirurgia ortognática (p = 0,003), porém com diferença em relação ao GC (p = 0,027). Não houve modificação na postura de cabeça após a cirurgia ortognática, porém observou-se diferença significativa entre os grupos pós-DDF e GC para a inclinação de cabeça (p = 0,017). Não observou-se relação entre o modo respiratório e a postura de cabeça (p > 0,05). Conclusão: Após a cirurgia ortognática, notou-se melhora espontânea da respiração na amostra estudada. Não foi possível verificar modificações na postura de cabeça e associação entre modo respiratório e postura de cabeça.


Subject(s)
Humans , Adult , Orthognathic Surgery , Malocclusion , Mouth Breathing , Posture , Respiration , Dentofacial Deformities
18.
Braz. dent. sci ; 25(3): 1-8, 2022. tab, ilus
Article in English | LILACS, BBO | ID: biblio-1378432

ABSTRACT

Objetivo: O objetivo deste estudo é avaliar sistematicamente as evidências disponíveis para recidiva do tratamento da mordida aberta esquelética usando dispositivos de ancoragem temporária e cirurgia ortognática. Material e Métodos: Cinco bases de dados eletrônicas como MEDLINE, COCHRANE, SCIELO, GOOGLE SCHOLAR, EMBASE foram pesquisadas sistematicamente até junho de 2020. Os estudos de qualidade metodológica foram classificados por meio da Ferramenta de Avaliação de Qualidade do Projeto de Práticas de Saúde Pública Eficazes (EPHPP). Resultados: No total, 1.005 estudos foram identificados para triagem e 6 estudos foram elegíveis. O instrumento de avaliação da qualidade apresentou qualidade moderada para todos os estudos. A correção imediata pós-tratamento da mordida aberta foi melhor nos estudos cirúrgicos do que nos estudos tratados com TADs. Conclusão: A estabilidade dos resultados do tratamento da mordida aberta anterior foi comparável nos casos tratados em ambas as modalidades de tratamento. A recidiva da mordida aberta anterior foi associada a casos em que a sobremordida pós-tratamento foi mínima. A sobremordida parece ser mais estável quando apenas a maxila foi operada do que com cirurgias bimaxilares. A rotação anti-horária da mandíbula com subsequente redução da altura facial anterior foi melhor na correção cirúrgica do que através de TADs (AU)


Objective: The purpose of this study is to systematically assess the available evidence for relapse of skeletal open bite treatment using temporary anchorage devices and orthognathic surgery. Materials and Methods: Five electronic databases such as MEDLINE, COCHRANE, SCIELO, GOOGLE SCHOLAR, EMBASE were systematically searched up to June 2020. Methodological quality studies were graded by means of the Effective Public Health Practice Project (EPHPP) Quality Assessment Tool. Results: In total, 1005 studies were identified for screening, and 6 studies were eligible. The quality assessment tool showed moderate quality for all the studies. The immediate post treatment correction of open bite was better in the surgical studies than in the studies treated with TADs. Conclusion: Stability of treatment results of anterior openbite was comparable in cases treated in both the treatment modalities. Relapse of anterior open bite was associated with cases in which the posttreatment overbite was minimal. Overbite seems to be more stable when only the maxilla has been operated on than with bi-maxillary surgeries. Counterclockwise rotation of the mandible with subsequent reduction of anterior facial height was better in surgical correction than through TADs. (AU)


Subject(s)
Surgery, Oral , Open Bite , Suture Anchors , Orthognathic Surgery
19.
Rev. cuba. estomatol ; 58(4)dic. 2021.
Article in English | LILACS, CUMED | ID: biblio-1408350

ABSTRACT

Introduction: Negative maxillary transverse discrepancy is not exclusive to narrow upper arch. The transverse discrepancy due to maxillary deficiency is well described, but this is not the case when the maxilla displays adequate dimensions and the origin of the problem is an excess of mandibular width. Objective: To describe the cephalometric characteristics of negative maxillary transverse discrepancy present in narrow upper arches with those of normal or increased width. Methods: An observational and cross-sectional study was carried out in records of patients with negative maxillary transverse discrepancy. The cases referred to the maxillofacial surgery department at Hospital Clínico Quirúrgico "Hermanos Ameijeiras" between January 2016 and January 2020 were selected. The initial study models were measured and two groups were formed: those with a distance between central fossae of 16 to 26, less than 47 mm and the other with equal or greater values. Lateral cephalometric analysis of Ricketts, McNamara, Björk & Jarabak, Burstone and soft profile were performed on the initial teleradiographs. Using the Mann Whitney U test of independent samples, measurements with statistically significant differences between both groups were selected. (p <0.05). Results: Significant differences were found regarding the cranial-mandibular relationship, mandibular anatomy, maxillo-mandibular relationship and occlusal relationship. The most important differences observed in each group were respectively: S-Ar / Ar-Go ratio (p = 0.033), mandibular body length (p = 0.01), mandibular-maxillary difference (p = 0.003) and overjet (p = 0.043). Conclusions: In the studied patients, negative maxillary transverse discrepancy has the same probability of presenting a wide or in norm upper arch, as well as a narrow arch. In the first case, it is more likely to find jaws with increased body length, a skeletal class III pattern and a concave profile; in the second case, the tendency is to present small jaws with increased articular angle and dental overjet(AU)


Introducción: La discrepancia negativa transversal del maxilar no es exclusiva de una arcada superior angosta. La discrepancia transversal por deficiencia maxilar está bien descrita, pero no ocurre así cuando el maxilar se presenta con dimensiones adecuadas y el origen del problema es un exceso del ancho mandibular. Objetivo: Describir las diferencias cefalométricas de la discrepancia negativa transversal del maxilar que presentan arcadas superiores estrechas con aquellas de ancho normal o incrementado. Métodos: Se realizó un estudio observacional, de corte transversal, en expedientes de pacientes con discrepancia negativa transversal del maxilar. Se seleccionaron los casos que acudieron entre enero del 2016 y enero del 2020 a la consulta de cirugía maxilofacial del Hospital Clínico Quirúrgico "Hermanos Ameijeiras". Se midieron los modelos de estudio iniciales y se conformaron dos grupos: aquellos con distancia entre fosas centrales de 16-26, menor de 47 mm y el otro con valores iguales o superiores. Se realizaron análisis cefalométricos laterales en las telerradiografías iniciales de Ricketts, McNamara, Björk & Jarabak, Burstone y perfil blando. Por medio de la prueba U de Mann Whitney de muestras independientes, se seleccionaron las mediciones con diferencias estadísticas significativas entre ambos grupos (p < 0.05). Resultados: Se encontraron diferencias significativas concernientes a la relación cráneo mandibular, anatomía mandibular, relación máxilo mandibular y relación oclusal. Las diferencias observadas más importantes de cada grupo fueron respectivamente: relación S-Ar/Ar-Go (p = 0,033), longitud del cuerpo mandibular (p = 0,01), diferencia mandibular-maxilar (p = 0,003) y resalte (p = 0,043). Conclusiones: En los pacientes estudiados, las discrepancias negativas transversales tienen la misma probabilidad de presentarse con la arcada superior ancha o en norma, que angosta. En los primeros es más probable encontrar mandíbulas con longitud del cuerpo incrementada, patrón de clase III esquelética y perfil cóncavo; en los segundos, la tendencia es a presentar mandíbulas pequeñas con ángulo articular y resalte dentario aumentados(AU)


Subject(s)
Humans , Cephalometry/methods , Overbite , Orthognathic Surgery/methods , Malocclusion , Cross-Sectional Studies , Statistics, Nonparametric , Observational Studies as Topic
20.
Rev. Círc. Argent. Odontol ; 79(230): 5-15, dic. 2021. ilus
Article in Spanish | LILACS | ID: biblio-1358074

ABSTRACT

Desde la antigüedad la belleza y la armonía facial han sido objetivos que tanto pintores como escultores, médicos y las personas tratan de lograr. Los rostros han sido estereotipados y es así como las caras proporcionadas tanto en alto como en ancho con perfiles que son rectos o levemente convexos son los que se asocian a bondad, generosidad, personas con luz interior, princesas y son las "buenas de las películas". Pero ¿qué sucede con aquellos rostros cóncavos, con tercios inferiores ya largos o cortos?… a ellos les ha tocado la peor parte, son los malos, los oscuros, los "villanos de las películas". Objetivos La finalidad de este trabajo es acercar a los colegas ortodoncistas una opción de tratamiento en clase III esqueletal, cuando el camuflaje ortodóncico no alcanza para resolver el crecimiento alterado entre el maxilar superior y el maxilar inferior (AU)


Beauty and facial harmony have been, since the beginning of humanity, a target for artists, painters, sculptores, and even people and doctors to accomplish. There is a stereotype of beauty: faces with proportional dimensions both in height and length, with straight profiles or somehow convex are associated with kindness, generosity and inner beauty. We can see this in movies where the heroes, the princesses, the "good guys" are portrayed with these types of faces. And what happens with people with concave faces, long or short inferior thirds? They are doomed to be the evil, the dark and "the villains" (AU)


Subject(s)
Humans , Male , Adolescent , Esthetics, Dental , Face/anatomy & histology , Orthognathic Surgery , Malocclusion, Angle Class III/surgery , Patient Care Planning , Argentina , Cephalometry , Genioplasty , Maxillofacial Development
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