Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 5 de 5
Filter
1.
Surg Neurol Int ; 15: 145, 2024.
Article in English | MEDLINE | ID: mdl-38741988

ABSTRACT

Background: Orbital hypertelorism is a rare congenital condition caused by craniofacial malformations. It consists of complete orbital lateralization, characterized by an increase in distance (above the 95th percentile) of the inner canthal (ICD), outer canthal, and interpupillary distances. It can be approached surgically, and the main techniques are box osteotomy and facial bipartition. The surgical procedure is usually performed before the age of 8. We describe here two patients who underwent late surgical correction using the box osteotomy technique. Case Description: Patient 1: A 13-year-old female presenting isolated hypertelorism with 5 cm ICD and left eye amblyopia. Patient 2: A 15-year-old female with orbital hypertelorism, 4.6 cm ICD, and nasal deformity. Both patients underwent orbital translocation surgery and had no neurological disorders. Conclusion: The article reports two cases of isolated hypertelorism treated late with the box osteotomy technique. Both surgeries were successful, with no postoperative complications. It appears that it is possible to obtain good surgical results even in patients who have not been able to undergo surgery previously.

2.
Dental Press J Orthod ; 27(5): e222199, 2023.
Article in English | MEDLINE | ID: mdl-36629628

ABSTRACT

INTRODUCTION: Research in Orthodontics and Oral Surgery has been relying on three-dimensional (3D) models to evaluate treatment results with displacement color map techniques, even though it has important limitations. OBJECTIVES: This study proposed a method of tracking translational movements of 3D objects to evaluate displacements in surfaces with no shape modification. METHODS: Cone Beam Computed Tomography (CBCT) data of ten patients were imported to the Dolphin software. A hypothetical virtual surgical plan (randomly defined) was developed in the software and afterwards verified using the proposed method. All the procedures were carried out by two evaluators, in two different time-points, with a 15-day interval. ITK-Snap software was used to generate high quality STL models. Centroid points were automatically generated and their coordinates were compared to confirm if they represented the known displacements simulated. The paired t-test and the Bland-Altman plots were used, as well as the intraclass correlation coefficient. RESULTS: Interexaminers and intra-examiner tests showed excellent reliability of the method, with mean displacement measurement error values under 0.1mm. The paired t-test did not show any statistically significant differences. CONCLUSION: The method showed excellent reliability to track the simulated translational displacements of bone segments.


Subject(s)
Imaging, Three-Dimensional , Orthodontics , Imaging, Three-Dimensional/methods , Reproducibility of Results , Cone-Beam Computed Tomography/methods , Software
3.
Dental press j. orthod. (Impr.) ; 27(5): e222199, 2022. tab, graf
Article in English | LILACS-Express | LILACS, BBO - Dentistry | ID: biblio-1421339

ABSTRACT

ABSTRACT Introduction: Research in Orthodontics and Oral Surgery has been relying on three-dimensional (3D) models to evaluate treatment results with displacement color map techniques, even though it has important limitations. Objectives: This study proposed a method of tracking translational movements of 3D objects to evaluate displacements in surfaces with no shape modification. Methods: Cone Beam Computed Tomography (CBCT) data of ten patients were imported to the Dolphin software. A hypothetical virtual surgical plan (randomly defined) was developed in the software and afterwards verified using the proposed method. All the procedures were carried out by two evaluators, in two different time-points, with a 15-day interval. ITK-Snap software was used to generate high quality STL models. Centroid points were automatically generated and their coordinates were compared to confirm if they represented the known displacements simulated. The paired t-test and the Bland-Altman plots were used, as well as the intraclass correlation coefficient. Results: Interexaminers and intra-examiner tests showed excellent reliability of the method, with mean displacement measurement error values under 0.1mm. The paired t-test did not show any statistically significant differences. Conclusion: The method showed excellent reliability to track the simulated translational displacements of bone segments.


RESUMO Introdução: Grande parte das pesquisas em Ortodontia e Cirurgia Oral tem utilizado modelos tridimensionais e realizado avaliações por meio de mapa de cores de deslocamento, apesar das limitações existentes. Objetivo: O presente estudo teve como objetivo propor um método de rastreamento de movimentos translacionais de objetos 3D, para avaliar deslocamentos em superfícies sem modificação de forma. Métodos: Dez adultos que seriam submetidos à cirurgia ortognática tiveram suas tomografias computadorizadas de feixe cônico pré-cirúrgicas importadas para o software Dolphin. Um plano cirúrgico virtual hipotético com deslocamentos conhecidos foi desenvolvido e posteriormente verificado pelo método proposto. Todos os procedimentos foram realizados por dois avaliadores, em dois momentos diferentes, com intervalo de 15 dias. O software ITK-Snap foi usado para gerar modelos STL de alta qualidade dos ossos do paciente. Os pontos do centroide foram gerados automaticamente, e suas coordenadas foram comparadas, para confirmar se representavam os deslocamentos conhecidos simulados. Para análise estatística, foram usados teste t pareado, coeficiente de correlação intraclasse e os gráficos de Bland-Altman. Resultados: O teste inter e intraexaminadores mostrou boa confiabilidade do método, com valores médios abaixo de 0,1mm para os erros de medida de deslocamento. Conclusão: O método mostrou boa confiabilidade para avaliar o deslocamento de segmentos ósseos após cirurgia ortognática, devendo ser aplicado como uma ferramenta completa de avaliação verdadeiramente tridimensional.

4.
Rev. Clín. Ortod. Dent. Press ; 15(3): 83-105, jun.-jul. 2016. ilus
Article in Portuguese | LILACS, BBO - Dentistry | ID: biblio-856057

ABSTRACT

Introdução: O objetivo deste trabalho é apresentar, por meio da análise de um caso clínico, um protocolo para diagnóstico e tratamento de pacientes portadores de deformidade dentofacial, candidatos ao tratamento ortodôntico-cirúrgico. Esse tratamento exige cautelosa análise da estética facial, da oclusão e do padrão respiratório do paciente. Um diagnóstico preciso é fundamental para a construção de um plano de tratamento adequado, elaborado conjuntamente por cirurgiões e ortodontistas. Os avanços nos exames de imagens 3D na última década permitiram um aumento sem precedentes da precisão no diagnóstico e na execução do planejamento cirúrgico. Atualmente, o planejamento virtual constitui uma importante ferramenta para a realização do tratamento orto-cirúrgico. A cirurgia virtual possui maior precisão, melhorando a capacidade de reprodução do plano de tratamento na sala de cirurgia. Entretanto, é importante que protocolos para o tratamento virtual sejam estabelecidos e aprimorados


Subject(s)
Humans , Male , Young Adult , Diagnostic Imaging , Dentofacial Deformities/therapy , Orthognathic Surgery , Patient Care Planning , Clinical Protocols
5.
Rio de Janeiro; s.n; s.n; 2012. 47 p. ilus.
Thesis in Portuguese | BBO - Dentistry | ID: biblio-909961

ABSTRACT

Certas condições médicas e seus respectivos tratamentos farmacológicos tem influenciado o tratamento odontológico de uma forma geral. A terapia com anticoagulante oral (TAO) tem sido utilizada com sucesso na redução do risco de tromboembolismo. Frequentemente, pacientes que fazem terapia com anticoagulante oral necessitam de procedimentos cirúrgicos odontológicos. O controle pré-operatório destes pacientes que serão submetidos à cirurgia bucal é um problema comum e desafiador. O objetivo deste estudo foi avaliar complicações hemorrágicas associadas à cirurgia bucal em pacientes em TAO sem alterar o regime terapêutico. Os pacientes que foram incluídos neste estudo estavam em tratamento com anticoagulante oral e necessitavam de um procedimento cirúrgico (extrações, alveoloplastias). Um total de 73 intervenções em 25 pacientes foi realizado. A média do INR no pré-operatório foi de 2.59, variando entre 1.20 e 4.61. Apenas 1 paciente (4%) evoluiu, no segundo dia de pós-operatório, com hemorragia leve, que foi resolvida com pressão local. Sendo assim, podemos concluir que os pacientes em TAO, que necessitam de exodontias, não devem interromper ou alterar o regime terapêutico devido ao baixo risco de sangramento e potencial risco de desenvolver um acidente tromboembólico. A incidência de complicações hemorrágicas neste estudo foi de 4%. A exodontia é um procedimento seguro em pacientes sob a TAO com valor de INR dentro da faixa terapêutica preconizada como ideal para a condição clínica de que se está tratando, desde que associada a cuidados locais de hemostasia.


Certain medical conditions and their respective treatments have often influenced dental treatments. Oral anticoagulant therapy (OAT) has been successfully used to reduce the risk of thromboembolism. Patients using oral anticoagulants often require dental surgical procedures. The pre-operative assessment of these patients submitted to oral surgery is a common and challenging problem. The aim of this study was to evaluate the hemorrhagic complications due to oral surgery in patients submitted to OAT without modifying the therapeutic regimen. The patients included in this study were undergoing OAT and required surgical procedures (extractions, alveoloplasties). A total of 73 interventions in 25 patients were made. The average INR during the pre-operative period was 2.59, ranging from 1.20 to 4.61. Only one patient (4%) presented, on the second day, a light hemorrhage, which was managed with local pressure. Therefore, patients in OAT that require dental extractions should not interrupt or alter the therapeutic regimen due to the low risk of bleeding and the potential risk of developing a thromboembolic accident. The incidence of hemorrhagic complications in this study was of 4%. Dental extractions are safe procedures for patients undergoing OAT, with INR values within the therapeutic interval recommended as ideal for the clinical conditions being treated, as long as they are associated to local hemostatic actions.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Anticoagulants/therapeutic use , Hemostasis, Surgical , Oral Hemorrhage/complications , Surgery, Oral , Blood Coagulation/drug effects , Thromboembolism/drug therapy , Warfarin
SELECTION OF CITATIONS
SEARCH DETAIL
...