Shafiei Fereshteh, Aghaei Tayebeh, Jowkar Zahra
Professor, Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Post-graduate Dental Student, Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
J Clin Exp Dent. 2020 Mar 1;12(3):e235-e241. doi: 10.4317/jced.55942. eCollection 2020 Mar.
Immediate dentin sealing (IDS) with proanthocyanidin (PA) could be used before cementation with a self-adhesive (SA) cement. The aim of this study was to assess the effect of PA treatment on acid-etched dentin before adhesive application, in IDS and delayed dentin sealing (DDS), on the strengthening property of SA-cemented composite resin inlay in premolars.
Eighty-four maxillary premolars were divided into 7 groups (n=12): 1) (Intact) Sound teeth served as controls; groups 2-7) After cavity preparation and fabrication of composite resin inlay, temporary inlays were made and cemented. After one week, the inlays were removed and composite inlays were luted with a self-adhesive resin cement as follows: 2) (SA) Without dentin- pretreatment; 3) (DDS) Etch-and-rinse adhesive before the cementation; 4) (DDS/PA) PA treatment of acid-etched dentin before the adhesive, followed by the cementation; 5) (Etch/PA) PA treatment of acid-etched dentin before the cementation; 6 and 7) (IDS and IDS/PA) Application of IDS without or with PA treatment, respectively, one week before the cementation. After thermo-mechanical aging, fracture resistance (FR) was tested. Data were analyzed using one-way ANOVA and Tamhane tests (α=0.05).
There was a significant difference between the study groups (<0.001). The IDS and IDS/PA groups yielded significantly higher FR compared to the SA group ( ≤ 0.003), but the DDS, DDS/PA and Etch/PA groups did not differ from the SA group (>0.05). The effect of PA on FR in the IDS and DDS techniques was not significant.
IDS with or without PA treatment considerably improved the strength of premolars with self-adhesive-cemented inlay, while the value of only IDS with PA treatment reached the level of the sound teeth. Delayed dentin sealing, fracture resistance, immediate dentin sealing, proanthocyanidin.
在用自粘型（SA）粘结剂粘结之前，可用原花青素（PA）进行即刻牙本质封闭（IDS）。本研究的目的是评估在IDS和延迟牙本质封闭（DDS）中，PA处理对酸蚀牙本质在粘结剂应用前的效果，以及对SA粘结的复合树脂嵌体在前磨牙中的强化性能。
84颗上颌前磨牙分为7组（n = 12）：1）（完整组）健康牙齿作为对照；2 - 7组）在制备窝洞并制作复合树脂嵌体后，制作临时嵌体并粘结。一周后，取出临时嵌体，用自粘树脂粘结剂粘结复合嵌体，如下：2）（SA组）未进行牙本质预处理；3）（DDS组）粘结前用酸蚀冲洗粘结剂；4）（DDS/PA组）粘结前对酸蚀牙本质进行PA处理，然后进行粘结；5）（酸蚀/PA组）粘结前对酸蚀牙本质进行PA处理；6和7组）（IDS组和IDS/PA组）分别在粘结前一周进行有无PA处理的IDS。热机械老化后，测试抗折强度（FR）。数据采用单因素方差分析和Tamhane检验进行分析（α = 0.05）。
研究组之间存在显著差异（<0.001）。与SA组相比，IDS组和IDS/PA组的FR显著更高（≤0.003），但DDS组、DDS/PA组和酸蚀/PA组与SA组无差异（>0.05）。PA对IDS和DDS技术中FR的影响不显著。
有无PA处理的IDS均显著提高了自粘粘结嵌体前磨牙的强度，而仅PA处理的IDS的值达到了健康牙齿的水平。延迟牙本质封闭、抗折强度、即刻牙本质封闭、原花青素。
