Comparative analysis of the bond strength of digital denture base materials.

IF 3.4 2区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE
Anhar Basunbul, Shatha Alshali, Ghadeer Basunbul, Yuwei Fan, Russell Giordano
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Abstract

Purpose: Evaluate the bond strength of commercial digital denture base materials to denture teeth and characterize composite resins.

Materials and methods: Twenty-four square-shaped specimens were prepared from Lucitone 199 denture base disc (Dentsply Sirona), AvaDent denture base puck (AvaDent), KeyMill denture base disc (Keystone), Lucitone digital print denture base resin (Dentsply Sirona), Formlabs denture base resin (Formlabs), and Dentca denture base resin II (Dentca) to test the bond strength to manufacturer-recommended denture teeth and characterize composite resin. Bond strength was determined using the shear bond test. Data were analyzed using one-way ANOVA followed by Tukey's HSD test (α = 0.05). Failure mode for all debonded specimens was analyzed using a stereomicroscope.

Results: The milled bases exhibited better bonding to manufacturer-recommended denture teeth but showed a low bond strength to the characterizing composite resin. In contrast, the printed bases showed a low bond strength to the manufacturer-recommended denture teeth material but displayed a better bond strength to the characterizing composite resin. The difference was statistically significant (p < 0.05).

Conclusion: This study demonstrates that the bond strength of milled denture bases to the manufacturer-recommended denture teeth is higher compared to that of printed denture bases, except for Lucitone 3D, which exhibited significantly higher bond strength when using Digital Fuse techniques. Future research should investigate surface modification strategies to improve long-term durability of bonds between denture bases and both denture teeth, and characterize composite resins as achieving reliable bonding to digital denture bases remains a clinical concern.

义齿基托材料粘结强度的对比分析。
目的:评价商用义齿基托材料与义齿的结合强度,并对复合树脂进行表征。材料与方法:采用Lucitone 199义齿基托盘(Dentsply Sirona)、AvaDent义齿基托袋(AvaDent)、KeyMill义齿基托盘(Keystone)、Lucitone数字打印义齿基托树脂(Dentsply Sirona)、Formlabs义齿基托树脂(Formlabs)和Dentca义齿基托树脂II (Dentca)制备24个方形试样,测试其与制造商推荐义齿的结合强度,并对复合树脂进行表征。通过剪切粘结试验确定了粘结强度。数据分析采用单因素方差分析,并采用Tukey’s HSD检验(α = 0.05)。用体视显微镜分析所有脱粘试样的失效模式。结果:磨制的基托与制造商推荐的义齿有较好的结合,但与表征复合树脂的结合强度较低。相比之下,打印基托与制造商推荐的义齿材料的结合强度较低,但与表征复合树脂的结合强度较好。结论:本研究表明,除了Lucitone 3D在使用Digital Fuse技术时表现出明显更高的结合强度外,磨制的义齿基托与制造商推荐义齿的结合强度高于打印的义齿基托。未来的研究应该研究表面修饰策略,以提高义齿基托与两颗义齿之间结合的长期耐久性,并且表征复合树脂,因为实现与义齿基托的可靠结合仍然是临床关注的问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
7.90
自引率
15.00%
发文量
171
审稿时长
6-12 weeks
期刊介绍: The Journal of Prosthodontics promotes the advanced study and practice of prosthodontics, implant, esthetic, and reconstructive dentistry. It is the official journal of the American College of Prosthodontists, the American Dental Association-recognized voice of the Specialty of Prosthodontics. The journal publishes evidence-based original scientific articles presenting information that is relevant and useful to prosthodontists. Additionally, it publishes reports of innovative techniques, new instructional methodologies, and instructive clinical reports with an interdisciplinary flair. The journal is particularly focused on promoting the study and use of cutting-edge technology and positioning prosthodontists as the early-adopters of new technology in the dental community.
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