阿拉伯胶粉对义齿基托丙烯酸树脂力学性能的影响。

Effect of Gum Arabic powder on the mechanical properties of denture base acrylic.

作者信息

Alsadon Omar, Alkhureif Abdulaziz Abdullah, Khan Aftab Ahmed

机构信息

Omar Alsadon, PhD, MPhill, BDentTech, Assistant Professor, Dental Health Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.

Abdul Aziz Abdullah Alkhureif, PhD, MPhill, BDentTech, Professor, Dental Health Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.

出版信息

Pak J Med Sci. 2023 Jan-Feb;39(1):223-226. doi: 10.12669/pjms.39.1.6937.

DOI:10.12669/pjms.39.1.6937

PMID:36694769

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9842989/

Abstract

OBJECTIVE

This study aimed to improve the mechanical properties of denture base material using various concentrations of natural biopolymer, i.e., Gum Arabic (GA).

METHODS

This experimental study was conducted at the Dental Health Department of the College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia from May 2022 to July 2022. After obtaining exemption from the institutional review board, the powdered GA was added in ratios of weight 5, 10, and 20% to PMMA heat-cured acrylic powder to produce bar-shaped samples (65 × 10 × 30 mm in dimensions). While the control group was prepared as such. Micro hardness (n=10/group) and fracture toughness (n=10/group) were evaluated. One-way analysis of variance method was used to statistically analyze the results (p<0.05) using SPSS version 23.

RESULTS

Significant differences were observed for micro hardness (p<0.001) and fracture toughness (p=0.007) between the means of the different study groups. The control group exhibited the highest micro hardness (22.5±0.6 VHN) and fracture toughness (1.25±0.11 MPa.m) value among the study groups. While 20 wt. % GA and 10 wt. % GA groups showed the lowest micro hardness and fracture toughness values, respectively.

CONCLUSIONS

GA powder might not be an appropriate reinforcing material for denture base or the higher filler loading of GA in denture base acrylic might be detrimental to the mechanical properties.

摘要

目的

本研究旨在使用不同浓度的天然生物聚合物，即阿拉伯胶（GA），来改善义齿基托材料的力学性能。

方法

本实验研究于2022年5月至2022年7月在沙特阿拉伯利雅得国王沙特大学应用医学科学学院牙科健康系进行。在获得机构审查委员会的豁免后，将GA粉末按重量比5%、10%和20%添加到PMMA热固化丙烯酸粉末中，以制备条形样品（尺寸为65×10×30mm）。对照组也按此方法制备。评估了微硬度（每组n = 10）和断裂韧性（每组n = 10）。使用SPSS 23版的单因素方差分析方法对结果进行统计学分析（p<0.05）。