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Abstract(s)
Introdução: Apesar da melhoria dos cuidados de higiene oral, o número de pacientes
parcialmente desdentados continua a ser elevado. Assim, a reabilitação dos espaços
edêntulos, com recurso à prótese parcial removível, é uma opção terapêutica viável.
A sinergia entre a Medicina Dentária e a Informática potenciou o surgimento de novas
tecnologias e o desenvolvimento de novos materiais para nelas serem utilizados.
Neste sentido, torna-se fundamental e relevante o estudo destes materiais,
particularmente, das suas características mecânicas. Assim, é objetivo deste estudo
comparar as propriedades mecânicas das resinas para impressão 3D com as da
resina convencional.
Materiais e Métodos: Esta revisão sistemática teve por base as orientações
PRISMA®. Foi realizada uma pesquisa nas bases de dados PubMed/MEDLINE®,
Web of Science – MEDLINE® e EMBASE®, até 30 de abril de 2022. A seleção dos
estudos foi realizada por dois investigadores independentes. A qualidade dos estudos
foi avaliada através da checklist do JBI para estudos quasi-experimentais (estudos
experimentais não-randomizados) e a concordância entre investigadores foi
determinada através do coeficiente de Kappa de Cohen. Foi realizada meta-análise
para a resistência à flexão.
Resultados: Após a pesquisa foram identificados 93 artigos. Foi analisado o título de
55 artigos. Destes, 12 foram analisados pelo resumo e 10 pela leitura integral,
resultando num total de 8 artigos elegíveis para integrar esta revisão sistemática. A
resina de impressão 3D apresenta, na maior parte dos estudos, valores mais baixos
de resistência à flexão e dureza, comparativamente à resina termopolimerizável. No
que concerne à resistência ao impacto, os estudos apontam para valores mais baixos
no caso da resina termopolimerizável, relativamente à resina de impressão 3D.
Conclusão: As resinas para impressão 3D são materiais viáveis para a confeção de
bases protéticas, mas carecem de mais investigação clínica.
Introduction: Despite the improvement in oral hygiene care, the number of partially edentulous patients is still prevalent. So, the rehabilitation of the edentulous space, using removable partial dentures is a viable therapeutic option. The synergy between Dentistry and Informatics allowed the appearance of new technologies, specifically 3D printing, which led to the development of new materials to be used in them. Therefore, it is essential and relevant to study its general performance and, particularly, its mechanical characteristics. Thus, it is the aim of this study to compare the mechanical properties of resins for 3D printing with those of conventional resin. Materials and Methods: This systematic review was written using the PRISMA guidelines. A search was carried out in the PubMed / MEDLINE®, Web of Science - MEDLINE® and EMBASE® databases, until April 30 th , 2022. Two researchers selected the studies independently. The quality of the papers was assessed using the checklist for quasi-experimental studies (non-randomized Experimental Studies) from JBI and the agreement between examiners was measured using the Cohen's Kappa coefficient. A meta-analysis was performed for the flexural strength. Results: Through the research, 93 articles were identified. The title of 55 articles was analyzed. Among these, 12 were examined by abstract and 10 by full reading. After this selection, 8 articles were eligible for analysis. The 3D printing resin presents, in most studies, lower values of flexural strength and hardness, compared to thermopolymerizable resin. Regarding impact strength, the studies included in this systematic review point lower values in the case of thermopolymerizable resin, compared to 3D printing resin. Conclusion: 3D printing resins are viable materials for making prosthetic bases but need further clinical research.
Introduction: Despite the improvement in oral hygiene care, the number of partially edentulous patients is still prevalent. So, the rehabilitation of the edentulous space, using removable partial dentures is a viable therapeutic option. The synergy between Dentistry and Informatics allowed the appearance of new technologies, specifically 3D printing, which led to the development of new materials to be used in them. Therefore, it is essential and relevant to study its general performance and, particularly, its mechanical characteristics. Thus, it is the aim of this study to compare the mechanical properties of resins for 3D printing with those of conventional resin. Materials and Methods: This systematic review was written using the PRISMA guidelines. A search was carried out in the PubMed / MEDLINE®, Web of Science - MEDLINE® and EMBASE® databases, until April 30 th , 2022. Two researchers selected the studies independently. The quality of the papers was assessed using the checklist for quasi-experimental studies (non-randomized Experimental Studies) from JBI and the agreement between examiners was measured using the Cohen's Kappa coefficient. A meta-analysis was performed for the flexural strength. Results: Through the research, 93 articles were identified. The title of 55 articles was analyzed. Among these, 12 were examined by abstract and 10 by full reading. After this selection, 8 articles were eligible for analysis. The 3D printing resin presents, in most studies, lower values of flexural strength and hardness, compared to thermopolymerizable resin. Regarding impact strength, the studies included in this systematic review point lower values in the case of thermopolymerizable resin, compared to 3D printing resin. Conclusion: 3D printing resins are viable materials for making prosthetic bases but need further clinical research.
Description
Keywords
PMMA Propriedades mecânicas Base protética Resina de impressão 3D Revisão sistemática Mechanical properties Denture base 3D printed resin Systematic review