CAD/CAM Conic Crowns for Predictable Retention in Implant-Supported Prostheses

doi:10.11607/ijp.4303

Q3 · DentistryImpact Factor · 1.391

AutoresJose Antonaya-Martin, Jaime Del Rio-Highsmith, Isabel Moreno-Hay, Juan Lillo-Rodríguez, Miguel Gomez-Polo, Alicia Celemin-Viñuela

Por qué importa

Este estudio evalúa la fuerza de retención de coronas cónicas CAD/CAM en prótesis sobre implantes, explorando una alternativa a las prótesis cementadas y atornilladas. Se investigó la relación entre el ángulo del cono y la retención obtenida, diseñando y fabricando 40 pilares y sus cofias con ángulos que varían de 1 a 8 grados. Los resultados muestran que a menor ángulo del cono, mayor es la fuerza de retención, describiendo una tendencia curvilínea que permite desarrollar modelos predictivos. La comprensión de esta relación es relevante para los clínicos que buscan optimizar la retención de las prótesis implantosoportadas, ofreciendo un nuevo enfoque para la estabilidad y la previsibilidad en la rehabilitación protésica.

Abstract original

Purpose: To evaluate CAD/CAM conic crowns to obtain a reversible and predictable retention in implant-supported prostheses. Materials and methods: Five 1- to 8-degree CAD/CAM abutments and their respective copings (n = 40) were designed and manufactured to measure the retention strength (in N) on a Zwick/Roell testing frame. Results: The mean retention strength values found, in descending order of cone angle, were as follows: 8 degrees, 21.02 N; 7 degrees, 23.16 N, 28 N, and 36.40 N; 6 degrees, 40.46 N; 5 degrees, 66.36 N; 4 degrees, 61.23 and 76.12 N; 3 degrees, 93.44 N, 103.21 N, and 112.04 N; 2 degrees, 154.20 N; and 1 degree, 204.74 N, 261 N, and 293.40 N. These data describe a high-intensity ratio with a curvilinear trend that can be used to develop predictive models. Conclusion: With the limits of this study, it can be concluded that retention strength increased as the cone angle decreased. The data described a curve from which two predictive models were developed to find retention strength from the cone angle used and the cone angle that would be needed to deliver a given retention strength. This study is the first step in searching for an alternative to cemented and screw-retained implant-supported prostheses and new retaining elements in implant-retained prostheses.

Leer texto completo ↗DOI · 10.11607/ijp.4303

Autor Doctor&Cols

Jose Luis Antonaya Martín
Rehabilitación Oral y Estética Dental

Cómo citar

Antonaya-Martin J, Rio-Highsmith JD, Moreno-Hay I, Lillo-Rodríguez J, Gomez-Polo M, Celemin-Viñuela A. CAD/CAM Conic Crowns for Predictable Retention in Implant-Supported Prostheses. The International Journal of Prosthodontics. 2016. doi:10.11607/ijp.4303