A Comparative Clinical Study of the Effect of Denture Cleansing on the Surface Roughness and Hardness of Two Denture Base Materials.
A Comparative Clinical Study of the Effect of Denture Cleansing on the Surface Roughness and Hardness of Two Denture Base Materials.
复制标题
DOI：
10.3889/oamjms.2016.089
复制
发表时间：
2016-09-15
影响因子：
--
通讯作者：
ElGabry HS
中科院分区：
文献类型：
--
作者：
Moussa AR;Dehis WM;Elboraey AN;ElGabry HS
本研究旨在验证口腔环境和义齿清洁剂对两种不同义齿基托材料表面粗糙度和硬度的影响。共处理16个相同的可移动椎间盘标本（RDS）。8个RDS由热固化丙烯酸树脂（AR）制成，另外8个RDS由热塑性注塑树脂（TR）制成。采用超声轮廓仪和万能试验机分别测量了DRS的表面粗糙度和硬度。将4个RDS（2个AR和2个TR）固定在每个上颌义齿上，3个月后取出RDS。重新测量了RDS的表面粗糙度和硬度。表面粗糙度测量显示，两组椎间盘在基线时无显著差异（p >0.05）。然而，三个月后，两组的表面粗糙度均显著增加，（TR）组的平均值更高。另一方面，（AR）组在基线时硬度平均值高于（TR）组，随访3个月后硬度值无显著下降（p < 0.05）。义齿清洗剂对义齿表面粗糙度和硬度的影响与口腔状况有关，从而影响义齿的使用寿命和患者的满意度。
This study aimed to verify the influence of oral environment and denture cleansers on the surface roughness and hardness of two different denture base materials. A total of sixteen identical removable disc specimens (RDS) were processed. Eight RDS were made from heat-cured acrylic resin (AR) and the other eight were fabricated from thermoplastic injection moulded resin (TR). Surface roughness and hardness of DRS were measured using ultrasonic profilometry and Universal testing machine respectively. Then the four RDS (two AR and two of TR) were fixed to each maxillary denture, after three months RDS were retrieved. Surface roughness and hardness of RDS have measured again. The surface roughness measurements revealed no significant difference (p >0.05) for both disc groups at baseline. However, both groups showed a significant increase in the surface roughness after three months with higher mean value for (TR) group. On the other hand, the (AR) group showed higher hardness mean value than (TR) group at baseline with no significant decrease in the hardness values (p >0.05) following three months follow-up period. Denture cleansers have an effect on the denture’s surface roughness and hardness concurrently with an oral condition which will consequently influence the complete dentures’ lifetime and patients’ satisfaction.