Dodamani Girija, Pawar Priyadarshani, Patil Rohit M, Badaam Aamer M, Siddiqui Saba A, Mehta Sneha
Department of Prosthodontics, Jawahar Medical Foundation (JMF) Annasaheb Chudaman Patil Memorial (ACPM) Dental College, Dhule, IND.
Department of Prosthodontics, Aditya Dental College, Beed, IND.
Cureus. 2023 Jul 26;15(7):e42513. doi: 10.7759/cureus.42513. eCollection 2023 Jul.
Introduction The debonding of acrylic teeth from the denture base, particularly in cases of prominent ridges, is a common problem faced by clinicians and patients. The present study was conducted to assess the effects of various chemical treatments on the shear bond strength (SBS) of acrylic teeth bonded to different high-impact denture base materials. Materials and methods The present in vitro study was conducted on 80 wax specimens with acrylic teeth bonded to two high-impact denture base materials (DPI Tuff (DPI Dental Products of India Ltd, Mumbai) and Trevalon HI (Trevalon HI, Dentsply, Karnataka)). The two main groups were further divided into four subgroups of 10 specimens each, depending on the chemical treatment at the ridge lap area of the tooth: control group without any chemical treatment, chemical surface treatment (CST) with dichloromethane and monomer mix, CST with ethyl acetate, and CST with acrylic adhesive cyanoacrylate. The SBS was tested using a universal testing machine (UTM). Analysis of variance (ANOVA) and post-hoc Tukey tests were used for statistical analyses. Results The mean SBS of Group A (DPI Tuff) was 111.75 N as compared to 118 N in Group B (Trevalon HI). The differences were statistically significant (p<0.05). ANOVA and post-hoc Tukey's tests revealed significant differences between subgroups. The highest mean SBS was noted with a dichloromethane and monomer mix (1:1 volume), followed by the ethyl acetate, control, and cyanoacrylate subgroups. Conclusion The cross-linked acrylic teeth treated with a dichloromethane and monomer mixture (1:1 by volume), processed with Trevalon HI high-impact denture base resin had the highest SBS and thus were indicated for bonding teeth with the suggested denture base.
引言
丙烯酸树脂牙与义齿基托分离，尤其是在牙槽嵴明显的情况下，是临床医生和患者面临的常见问题。本研究旨在评估各种化学处理对粘结在不同高冲击性义齿基托材料上的丙烯酸树脂牙的剪切粘结强度（SBS）的影响。
材料与方法
本体外研究在80个粘结有丙烯酸树脂牙的蜡标本上进行，这些标本粘结在两种高冲击性义齿基托材料上（印度孟买的DPI Dental Products of India Ltd公司生产的DPI Tuff和登士柏公司（Dentsply）在卡纳塔克邦生产的Trevalon HI）。根据牙齿嵴部搭接区域的化学处理方法，两个主要组进一步分为四个亚组，每组10个标本：未进行任何化学处理的对照组、用二氯甲烷和单体混合物进行化学表面处理（CST）、用乙酸乙酯进行CST以及用氰基丙烯酸酯类丙烯酸胶粘剂进行CST。使用万能试验机（UTM）测试SBS。采用方差分析（ANOVA）和事后Tukey检验进行统计分析。
结果
A组（DPI Tuff）的平均SBS为111.75 N，而B组（Trevalon HI）为118 N。差异具有统计学意义（p<0.05）。ANOVA和事后Tukey检验显示亚组之间存在显著差异。二氯甲烷和单体混合物（体积比1:1）处理后的平均SBS最高，其次是乙酸乙酯组、对照组和氰基丙烯酸酯亚组。
结论
用二氯甲烷和单体混合物（体积比1:1）处理的交联丙烯酸树脂牙，与Trevalon HI高冲击性义齿基托树脂加工后具有最高的SBS，因此适用于与建议的义齿基托粘结牙齿。
