Tensile bond strength of resin-modified glass-ionomer cement to microabraded and silica-coated or tin-plated high noble ceramic alloy

Abstract

Purpose: The purpose of this study was to evaluate the influence of alloy surface microabrasion, silica coating, or microabrasion plus tin plating on the tensile bond strengths between a resin-modified glass-ionomer luting cement and a high-noble alloy. Bond strength between the microabraded alloy specimens and conventional glass-ionomer cement or resin cement were included for comparison.Materials and Methods: One hundred twenty uniform size, disk-shaped specimens were cast in a noble metal alloy and divided into 6 groups (n ‫؍‬ 10 pairs/group). The metal surfaces of the specimens in each group were treated and cemented as follows. Group 1: No surface treatment (as cast, control), cemented with a resin-modified glass-ionomer cement. Group 2: Microabrasion with 50-m aluminum oxide particles, resin-modified glass-ionomer cement. Group 3: A laboratory microabrasion and silica coating system, resin-modified glass-ionomer cement. Group 4: Microabrasion and tin-plating, resin-modified glass-ionomer cement. Group 5: Microabrasion only, conventional glass-ionomer cement. Group 6: Microabrasion and tin-plating, conventional resin cement. The uniaxial tensile bond strength for each specimen pair was determined using an Instron Universal Testing Machine (Instron Corp, Canton, MA). Results were analyzed using a one-way analysis of variance (␣ ‫؍‬ 0.05) and a Tukey post-hoc analysis. Results: Mean bond strength: Group 1: 3.6 (؎1.5) MPa. Group 2: 4.2 (؎0.5) MPa. Group 3: 6.7 (؎0.9) MPa. Group 4: 10.6 (؎1.8) MPa. Group 5: 1.1 (؎0.4) MPa. Group 6: 14.6 (؎2.3) MPa. Group 6 was significantly stronger than Group 4. The bond strength of specimens cemented with the resin-modified glass-ionomer cement using microabrasion and tin-plating (Group 4) was significantly stronger than all other groups except the resin cement with microabrasion and tin-plating (Group 6).Conclusion: Microabraded and tin-plated alloy specimens luted with the resin-modified glassionomer cement resulted in the greatest mean tensile strengths for the resin-modified glassionomer cement groups. This strength was 73% of the mean tensile strength of microabraded specimens luted with resin cement. J Prosthodont 2000;9;195-200. This is a US government work. There are no restrictions on its use.

Реставрация Из Стеклоиономерного Цемента С Покрытием

“…В 80-х годах использование СИЦ в стоматологических реставрациях постепенно сошло на нет по причине плохого краевого прилегания и низкой устойчивости к износу [13,14]. Стеклоиономерные цементы также получили статус дешевых материалов, которые описывались как стоматологические продукты невысокого качества, подходящие только для быстрых реставраций и в основном применяющиеся в качестве материалов для оказания социальной помощи в соответствии с протоколом ART (Атравматическая реставрационная терапия).…”