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Puente de zirconio fracturado de arco completo soportado por dientes: diseño delgado, daño superficial y espesor

João Paulo Mendes Tribst¹, Bart Jansen¹, Rafaela Oliveira Pilecco²

¹Department of Reconstructive Oral Care, Academic Centre for Dentistry Amsterdam (ACTA), Universiteit van Amsterdam and Vrije Universiteit, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, Noord-Holland, The Netherlands.

|February 20, 2026

Resumen

Un puente dental de zirconio falló prematuramente debido a un diseño insuficiente y daño superficial. Estos factores, combinados con la sobrecarga biomecánica, llevaron a la fractura, destacando los desafíos en la evaluación pre-cementación de las restauraciones.

Área de la Ciencia:

Ciencia de Biomateriales
Ciencia de Materiales Dentales
Odontología Restauradora

Sus antecedentes:

El zirconio se prefiere para restauraciones de arco completo debido a su resistencia y estética.
A pesar de las ventajas, pueden ocurrir fallas clínicas de las restauraciones de zirconio.
La fractura prematura requiere una investigación de los mecanismos de falla.

Objetivo del estudio:

Investigar el diseño y los mecanismos de falla de un puente de zirconio de arco completo soportado por dientes fracturado prematuramente.
Identificar los factores que contribuyen a la falla de la restauración de zirconio.

Principales métodos:

Análisis de archivos STL para evaluar el espesor del marco.
Análisis fractográfico de los componentes del puente fracturado.
Identificación del daño superficial, el espesor de la capa de cemento y el desgaste oclusal.

Principales resultados:

Se identificaron regiones con un espesor de marco reducido por debajo de las recomendaciones del fabricante.
Se observó una capa gruesa de cemento, daño superficial por fresado y desgaste oclusal.
Se determinó la propagación de grietas desde la dirección oclusal hacia la cervical.

Conclusiones:

La falla del puente de zirconio resultó de un patrón multifactorial que incluye defectos de diseño, daño superficial y sobrecarga biomecánica.
Los factores que contribuyeron a la falla en gran medida no fueron detectables antes de la cementación.
Este caso plantea preocupaciones sobre la evaluación pre-cementación de las restauraciones a base de zirconio.

Palabras clave:

prótesis dental falla de restauración dental puente adherido con resina

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