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Authors
Abstract(s)
Introdução: Um dos requisitos primordiais para um fluxo de trabalho digital no
planeamento de colocação de implantes, é fazer um levantamento imagiológico
correto das estruturas maxilo-faciais, neste caso a tomografia computorizada de
feixe cónico necessária para utilização na avaliação pré e pós-cirúrgica dos
pacientes. Para complementar este planeamento é um elemento fundamental a
impressão da arcada dentária do paciente para isso recorremos a um scanner
intraoral. A utilização de guias cirúrgicas computorizadas permite então colocar
os implantes proteticamente guiados e com um grau de precisão muito elevado.
Uma guia cirúrgica para colocação de implantes é definida como uma férula/guia
utilizada para auxiliar na correta colocação cirúrgica e angulação de implantes
dentários.
Objetivo: O objetivo deste estudo foi analisar a posição 3D de implantes
Straumann TLX® e BLX® colocados na Clínica Dentária Universitária da
Faculdade de Medicina Dentária da Universidade Católica Portuguesa através
de cirurgia estática guiada por computador e comparar com a planificação digital
efetuada.
Materiais e métodos: Foram utilizadas guias estáticas dento e mucosuportadas para a colocação dos implantes dentários, com dois métodos de
colocação, o totalmente guiado e com broca piloto. Para calcular os desvios, as
impressões digitais com scanbodies pós-operatórias dos implantes dentários
foram sobrepostas ao planeamento pré-operatório, com recurso ao add-on
“Treatment Evaluation” do programa coDiagnostiX® foi usado para avaliar a
precisão das localizações dos implantes.
Resultados: Foram analisados 36 implantes. Os desvios angulares (ombro e
ápice) apresentaram valores medianos de 4,4°e 1,7º respetivamente, já os
valores de desvios 3D (ombro e ápice) de 1,14 e 1,81 respetivamente. Diferenças
estatisticamente significativas foram encontradas em 8 dos nove parâmetros
medidos (p < 0,05).
Conclusão: Neste estudo a abordagem guiada para a colocação de implantes
sugeriu que as regiões apicais estão mais propensas a apresentarem desvios,
nomeadamente nos sentidos vestibulolingual e mesiodistal, verificou-se um
desvio angular de 4.40º e valores de 1,04mm e 1,70mm de deslocamento 3D no
ombro e ápice do implante comparando-o com o planeamento pré-cirúrgico.
Introduction: One of the primary requirements for a digital workflow in implant placement planning is to perform a correct imaging survey of the maxillofacial structures, in this case cone beam computed tomography is needed for use in pre- and post-surgical evaluation. of patients. To complement this planning, the impression of the patient's dental arch is a fundamental element, for this we use an intraoral scanner. The use of computerized surgical guides makes it possible to place implants prosthetically guided and with a very high degree of precision. A surgical guide for implant placement is defined as a splint/guide used to assist in the correct surgical placement and angulation of dental implants. Objective: The aim of this study was to analyse the 3D position of Straumann TLX® and BLX® implants placed at the University Dental Clinic of the Faculty of Dental Medicine of the Portuguese Catholic University through computer-guided static surgery and compare it with the digital planning performed. Materials and methods: Tooth and muco-supported static guides were used for the placement of dental implants, with two placement methods, fully guided and pilot drill. To calculate the deviations, the fingerprints with postoperative scanbodies of the dental implants were superimposed on the preoperative planning, using the add-on “Treatment Evaluation” of coDiagnostiX® was used to evaluate the precision of implant locations. Results: 36 implants were analysed. The angular deviations (shoulder and apex) presented median values of 4.4° and 1.7° respectively, while the 3D deviations (shoulder and apex) values were 1.14 and 1.81 respectively. Statistically significant differences were found in 8 of the nine parameters measured (p < 0.05). Conclusion: In this study, the guided approach to implant placement suggested that the apical regions are more likely to present deviations, namely in the buccolingual and mesiodistal directions, there was an angular deviation of 4.40º and values of 1.04mm and 1.70mm of 3D displacement on the shoulder and apex of the implant comparing it with the pre-surgical planning.
Introduction: One of the primary requirements for a digital workflow in implant placement planning is to perform a correct imaging survey of the maxillofacial structures, in this case cone beam computed tomography is needed for use in pre- and post-surgical evaluation. of patients. To complement this planning, the impression of the patient's dental arch is a fundamental element, for this we use an intraoral scanner. The use of computerized surgical guides makes it possible to place implants prosthetically guided and with a very high degree of precision. A surgical guide for implant placement is defined as a splint/guide used to assist in the correct surgical placement and angulation of dental implants. Objective: The aim of this study was to analyse the 3D position of Straumann TLX® and BLX® implants placed at the University Dental Clinic of the Faculty of Dental Medicine of the Portuguese Catholic University through computer-guided static surgery and compare it with the digital planning performed. Materials and methods: Tooth and muco-supported static guides were used for the placement of dental implants, with two placement methods, fully guided and pilot drill. To calculate the deviations, the fingerprints with postoperative scanbodies of the dental implants were superimposed on the preoperative planning, using the add-on “Treatment Evaluation” of coDiagnostiX® was used to evaluate the precision of implant locations. Results: 36 implants were analysed. The angular deviations (shoulder and apex) presented median values of 4.4° and 1.7° respectively, while the 3D deviations (shoulder and apex) values were 1.14 and 1.81 respectively. Statistically significant differences were found in 8 of the nine parameters measured (p < 0.05). Conclusion: In this study, the guided approach to implant placement suggested that the apical regions are more likely to present deviations, namely in the buccolingual and mesiodistal directions, there was an angular deviation of 4.40º and values of 1.04mm and 1.70mm of 3D displacement on the shoulder and apex of the implant comparing it with the pre-surgical planning.
Description
Keywords
Cirurgia assistida por computador Implantes dentários Tomografia computorizada por feixe cónico Estudos comparativos Estudos retrospetivos Computer-assisted surgery Dental implants Cone-beam computed tomography Comparative studies Retrospective studies