Revista de Odontologia da UNESP
https://revodontolunesp.com.br/article/doi/10.1590/1807-2577.20250052
Revista de Odontologia da UNESP
Original Article

Cleaning solutions and liner type: in vitro bond strength on three-dimensional printed denture bases: the effects of cleaning solutions on prosthesis bases

Soluções de limpeza e tipo de reembasador: resistência à tração in vitro de bases de próteses impressas em 3D: os efeitos das soluções de limpeza nas bases de próteses

Emel ARSLAN; Halil Nuri OZDEMIR; Hatice SEVMEZ

http://dx.doi.org/10.1590/1807-2577.20250052 Rev. odontol. UNESP, vol.55, e20250052, 2026
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Abstract

Introduction: This study aimed to investigate the tensile bond strength of hard and soft reline materials bonded to three-dimensional (3D)-printed denture bases and to evaluate the impact of various cleaning solutions on these properties.

Material and method: Specimens of 3D-printed denture bases were relined with either hard- or soft-liner materials. The samples were then treated with five different cleaning agents: sodium hypochlorite, hydrogen peroxide, distilled water, acetic acid, and a commercial chemical denture cleaner. The tensile bond strength at the liner-base interface was measured using a universal tensile testing machine. Data was analyzed using two-way ANOVA (α=0.05).

Result: The hard-liner material exhibited significantly superior tensile bond strength compared to the soft-liner. Among the cleaning agents, the chemical denture cleaner exhibited the highest tensile bond strength (24.89 ± 2.68 MPa), while sodium hypochlorite exhibited the lowest value (17.20 ± 1.81 MPa).

Conclusion: For 3D-printed denture bases, hard liner materials provide greater tensile bond strength than soft liners. Furthermore, the choice of cleaning agent significantly influences bond integrity; specifically, sodium hypochlorite may adversely affect tensile strength. Selecting an appropriate cleaning protocol is essential to improve the longevity of relined 3D-printed prostheses.

Keywords

Cleaning solutions; denture liners; tensile bond strength

Resumo

Introdução: Este estudo teve como objetivo investigar a resistência à tração da união de materiais de reembasamento rígidos e resilientes (soft) aderidos a bases de próteses impressas em três dimensões (3D) e avaliar o impacto de várias soluções de limpeza sobre essas propriedades.

Material e método: Espécimes de bases de próteses impressas em 3D foram reembasados com materiais de reembasamento rígidos ou resilientes. As amostras foram então tratadas com cinco agentes de limpeza diferentes: hipoclorito de sódio, peróxido de hidrogênio, água destilada, ácido acético e um limpador químico de próteses comercial. A resistência à tração da união na interface reembasamento-base foi medida utilizando uma máquina de ensaio universal. Os dados foram analisados através de ANOVA de duas vias (α=0,05).

Resultado: O material de reembasamento rígido exibiu uma resistência à tração da união significativamente superior em comparação ao resiliente. Entre os agentes de limpeza, o limpador químico de próteses exibiu a maior resistência à tração (24,89 ± 2,68 MPa), enquanto o hipoclorito de sódio exibiu o valor mais baixo (17,20 ± 1,81 MPa).

Conclusão: Para bases de próteses impressas em 3D, materiais de reembasamento rígidos proporcionam maior resistência à tração da união do que os resilientes. Além disso, a escolha do agente de limpeza influencia significativamente a integridade da união; especificamente, o hipoclorito de sódio pode afetar adversamente a resistência à tração. A seleção de um protocolo de limpeza adequado é essencial para aumentar a longevidade de próteses impressas em 3D reembasadas.

Palavras-chave

Soluções de limpeza; reembasadores de próteses; resistência à tração da união

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Submitted date:
12/20/2025

Accepted date:
04/17/2026

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