Evaluation of the Bond Strength between the Acrylic Teeth and Reinforced or Non-reinforced Complete Denture Base.

IF 1.4 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Martin Pavlin, Nenad Gubeljak, Jožef Predan, Robert Ćelić
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引用次数: 0

Abstract

Objective: The aim of this study was to examine whether the method of surface treatment of the acrylic teeth and reinforcement of the denture base (carbon fibers) affect the reduction of stress concentration for gap initiation at the interface of acrylic teeth and denture base as a measure of bond strength.

Materials and methods: Samples of cross-sections of acrylic teeth and denture base were isolated from four pairs of complete acrylic dentures (with and without reinforcement of the denture base) and were subsequently subjected to compressive loading in a universal testing machine simulating two different occlusions. Selected groups of acrylic teeth (central incisors, first premolars, and first molars) from complete dentures were treated in various ways (untreated, mechanical, chemical, and mechanical-chemical). The gap size at the interface of acrylic tooth and denture base was measured using a light inverted microscope on selected acrylic teeth of individual quadrants. The one-way analysis of variance was used to investigate the influence of denture base reinforcement and different methods of surface treatment of the acrylic tooth on bond strength at the level of statistical significance of p ≤ 0.001.

Results: Microscopic analysis of gap size measured at five selected points at the interface between the acrylic teeth and the base of the complete denture ranged from 40 to 144 micrometers. The one-way analysis of variance showed a statistically significant difference between the arithmetic means of the measured gap sizes concerning different methods of surface treatment of the acrylic teeth.

Conclusion: The fracture strength, or load-bearing capacity, of complete dentures reinforced with carbon fibers was increased compared to complete dentures with non-reinforced bases. Reduction in gap size at the interface between the acrylic teeth and the base of complete dentures was influenced by the mechanical-chemical treatment of the lower surface of acrylic teeth, while reinforcement of the complete denture base with carbon fibers had no effect on the bond strength.

评估丙烯酸牙齿与加固或非加固全口义齿基托之间的粘接强度。
研究目的本研究旨在探讨丙烯酸牙齿的表面处理方法和义齿基托的加固(碳纤维)是否会影响丙烯酸牙齿和义齿基托界面间隙起始应力集中的减少,以此作为粘接强度的衡量标准:从四副完整的丙烯酸义齿(有义齿基托加固和无义齿基托加固)中分离出丙烯酸牙齿和义齿基托的横截面样本,然后在万能试验机中模拟两种不同的咬合情况,对其进行压缩加载。对全口义齿中选定的几组丙烯酸牙齿(中切牙、第一前臼齿和第一臼齿)进行了不同的处理(未处理、机械处理、化学处理和机械-化学处理)。使用光学倒置显微镜测量每个象限选定的丙烯酸牙齿和义齿基托界面的间隙大小。采用单因素方差分析研究义齿基托加固和丙烯酸牙表面处理的不同方法对粘接强度的影响,统计显著性水平为 p≤ 0.001:对丙烯酸牙与全口义齿基托界面上五个选定点的间隙大小进行了显微分析,其范围在 40 到 144 微米之间。单因素方差分析显示,不同丙烯酸牙表面处理方法测量的间隙大小的算术平均值之间存在显著的统计学差异:结论:使用碳纤维加固的全口义齿的断裂强度或承重能力比未加固基托的全口义齿要高。丙烯酸牙齿和全口义齿基托界面间隙大小的缩小受丙烯酸牙齿下表面机械化学处理的影响,而用碳纤维加固全口义齿基托对粘接强度没有影响。
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
Acta Stomatologica Croatica
Acta Stomatologica Croatica DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
2.40
自引率
28.60%
发文量
32
审稿时长
12 weeks
期刊介绍: The Acta Stomatologica Croatica (ASCRO) is a leading scientific non-profit journal in the field of dental, oral and cranio-facial sciences during the past 44 years in Croatia. ASCRO publishes original scientific and clinical papers, preliminary communications, case reports, book reviews, letters to the editor and news. Review articles are published by invitation from the Editor-in-Chief by acclaimed professionals in distinct fields of dental medicine. All manuscripts are subjected to peer review process.
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