Shafiei Fereshteh, Memarpour Mahtab, Vafamand Narges, Mohammadi Mahsa
DMD, MScD, Professor, Oral and Dental Disease Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
DDS, Dentist, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
J Clin Exp Dent. 2017 Sep 1;9(9):e1096-e1102. doi: 10.4317/jced.53992. eCollection 2017 Sep.
Longevity of post-retained restoration is highly depended on bonding stability of fiber post (FP) to root dentin. This study evaluated the effect of different antibacterial/adhesive approaches on bonding durability of FPs luted into root canal with a self-etch cement.
Seventy-two human maxillary central incisor roots were divided into six groups after endodontic treatment, based on the antibacterial/adhesive treatments as follows: 1)ED primer II (ED, control); 2) Clearfil Protect Bond (PB); 3) 2% chlorhexidine (CH) pretreatment + ED primer II (CH+ED); 4) CH-incorporated into ED primer II (CH in ED); 5) CH pretreatment + Clearfil SE Bond (CH+SE); and 6)CH-incorporated into SE primer (CH in SE). The FPs were then cemented using PanaviaF2.0. After micro-slicing the bonded root dentin, a push-out bond strength (PBS) test was performed immediately or after two years of water storage. Data were analyzed using ANOVA and post hoc Tukey tests (α=0.05).
The effects of antibacterial/adhesive approach, time and interaction between the main factors were significant (=0.01). There was no significant difference between the immediate groups, except between the CH+ED group (the lowest PBS) and PB and CH in SE groups (the highest PBS) (≤0.03). After aging, the same difference was observed (≤0.02); the control group exhibited a significantly lower PBS compared to the other groups (≤0.01), except for CH+ED. Aging significantly decreased PBS of all the groups (≤0.01); the control group exhibited the highest reduction.
CH incorporated into self-etch primers or in pretreatment step prior to two-step self-etch adhesive and antibacterial adhesive could improve bond stability of self-etch cemented fiber post. However, none of these was capable of inhibiting bond degradation over time. Push-out bond strength, Fiber post, Chlorhexidine.
桩核修复体的长期留存高度依赖于纤维桩（FP）与根管牙本质之间的粘结稳定性。本研究评估了不同抗菌/粘结方法对用自酸蚀粘结剂粘结至根管内的纤维桩粘结耐久性的影响。
72颗人上颌中切牙根在根管治疗后，根据抗菌/粘结处理分为六组，如下：1）ED底漆II（ED，对照组）；2）Clearfil Protect Bond（PB）；3）2%氯己定（CH）预处理+ED底漆II（CH+ED）；4）CH加入ED底漆II中（CH在ED中）；5）CH预处理+Clearfil SE Bond（CH+SE）；6）CH加入SE底漆中（CH在SE中）。然后使用PanaviaF2.0粘结纤维桩。在对粘结的根管牙本质进行微切片后，立即或在水储存两年后进行推出粘结强度（PBS）测试。数据采用方差分析和事后Tukey检验进行分析（α=0.05）。
抗菌/粘结方法、时间以及主要因素之间的相互作用的影响具有显著性（=0.01）。即时组之间无显著差异，除了CH+ED组（最低PBS）与PB组和CH在SE组（最高PBS）之间（≤0.03）。老化后，观察到相同的差异（≤0.02）；对照组与其他组相比，PBS显著降低（≤0.01），CH+ED组除外。老化显著降低了所有组的PBS（≤0.01）；对照组降低幅度最大。
在自酸蚀底漆中加入CH或在两步自酸蚀粘结剂和抗菌粘结剂之前的预处理步骤中加入CH，可以提高自酸蚀粘结纤维桩的粘结稳定性。然而，这些方法均无法抑制随时间的粘结降解。推出粘结强度、纤维桩、氯己定。
