Effect of Different Concentration of Disinfectant Incorporated on Hardness of Heat Cured Acrylic Denture Base

Iraqi Dental Journal Pub Date : 2017-12-15 DOI:10.26477/IDJ.V39I3.130

L. E. Al-Jorani, Z. Alwahab

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Abstract

Background: The removable appliances have played an important role in routine prosthodontics and orthodontics for centuries. When the appliances related diseases occur, several approaches have been suggested to manage the situation. Materials and methods: Forty samples of heat cured acrylic were fabricated, they were divided into four groups according to the quantity of chlorhexidine incorporated with the liquid of acrylic (10 samples per each group), and these groups are: Group1: control group mixing heat cure acrylic only (liquid is monomer only) Group2: mixing 3/4 heat cure acrylic liquid with 1/4 chlorehexidine. Group3: mixing 1/2 heat cure acrylic liquid with 1/2 chlorehexidine. Group4: 1/4 mixing heat cure acrylic liquid with 3/4 chlorehexidine. Results: The results of the present study found that the highest shore D Hardness number was for the control group with no ad- dition of chlorhexidine, while the lowest Shore D Hardness number was for group 4 (1/4 mixing heat cure acrylic liquid with 3/4 chlorehexidine). Conclusion: The results revealed a reduction in hardness with increase in the percentage of chlorhexidine addition to monomer.

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不同浓度消毒剂掺入对热固化丙烯酸基托硬度的影响

背景:几个世纪以来，可移动矫治器在常规口腔修复和正畸治疗中发挥了重要作用。当器具相关疾病发生时，提出了几种方法来管理这种情况。材料与方法:制作40个热固化丙烯酸样品，根据丙烯酸液中氯己定的掺入量分为4组(每组10个样品)，分别为:第1组:只混合热固化丙烯酸的对照组(液体为单体)第2组:将3/4的热固化丙烯酸液与1/4的氯己定混合。组3:1/2热固化丙烯酸液与1/2氯己定混合。第4组:热固化丙烯酸液与3/4氯己定混合1/4。结果:本研究结果发现，未添加氯己定的对照组邵氏硬度值最高，4组(1/4热固化丙烯酸液与3/4氯己定混合)邵氏硬度值最低。结论:随着单体中氯己定添加量的增加，其硬度降低。

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Iraqi Dental Journal

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