Cagidiaco M C, Ferrari M, Garberoglio R, Davidson C L
Department of Restorative Dentistry, University of Siena, Italy.
Am J Dent. 1996 Apr;9(2):57-60.
To evaluate in vivo the efficacy in preventing post-operative sensitivity and bacterial invasion of primed dentin that was left unprotected for 4 days after laminate veneer preparation.
Twelve vital, periodontically involved anterior teeth were prepared for experimental laminate veneers and divided into three groups: (1) Control group, in which the prepared surfaces were left unprotected after preparation; (2) Prepared dentin surfaces were cleaned with Tubulicid Red Label and covered with Tubulitec Primer; (3) All-Bond 2 Primer was applied to the prepared dentin surface. Post-operative sensitivity was evaluated immediately and a second appointment, 4 days later. The teeth were then extracted and examined by SEM.
The application of a primer (Groups 2 and 3) prevented all sensitivity. After 4 days, the teeth in Group 1 were still sensitive to air blasts. Bacterial penetration into the unprotected tubules was observed in Group 1, but not in Groups 2 and 3.
在体内评估在制作贴面后对经过预处理的牙本质未进行4天保护的情况下，预防术后敏感和细菌侵入的效果。
为制作实验性贴面准备12颗有活力且牙周受累的前牙，并将其分为三组：（1）对照组，制备后制备表面不做保护；（2）用Tubulicid Red Label清洁制备的牙本质表面，并用Tubulitec Primer覆盖；（3）在制备的牙本质表面应用All-Bond 2 Primer。术后立即及4天后复诊评估敏感性。然后拔除牙齿并进行扫描电镜检查。
应用底漆（第2组和第3组）可预防所有敏感性。4天后，第1组牙齿对气流仍敏感。在第1组中观察到细菌侵入未受保护的小管，但在第2组和第3组中未观察到。
