Migliau Guido, Piccoli Luca, Di Carlo Stefano, Pompa Giorgio, Besharat Laith Konstantinos, Dolci Marco
Department of Oral and Maxillofacial Sciences, "Sapienza" University of Rome, Rome, Italy.
Department of Medical, Oral and Biotechnological Sciences, "G. D'Annunzio" University of Chieti, Chieti, Italy.
Ann Stomatol (Roma). 2017 Jul 3;8(1):29-33. doi: 10.11138/ads/2017.8.1.029. eCollection 2017 Jan-Mar.
The aim of this experimental study was to compare the traditional cement systems with those of the latest generation, to assess if indeed these could represent of viable substitutes in the cementation of indirect restorations, and in the specific case of endodontic posts.
The assessment of the validity of the cementing methods was performed according to the test of the push-out, conducted on sections obtained from the roots of treated teeth. The samples were divided into three groups. Group A (10 samples): etching for 30 seconds with 37% orthophosphoric acid (Superlux-Thixo-etch-DMG) combined with a dual-curing adhesive system (LuxaBond-Total Etch-DMG), dual-cured resin-composite cement (LuxaCore-DMG) and glass fiber posts (LuxaPost-DMG). Group B (10 samples): self-adhesive resin cement (Breeze-Pentron Clinical) and glass fiber posts (LuxaPost-DMG). Group C (10 samples): 3 steps light-curing, self-etching, self-conditioning bonding agent (Contax-Total-etch-DMG), dual-cured resin-composite cement (LuxaCore-DMG) and glass fiber posts (LuxaPost-DMG). The survey was conducted by examining the breaking resistance of the post-cement-tooth complex, subjected to a mechanical force. Statistical analysis was performed using SPSS Inc. ver. 13.0, Chicago, IL, USA.
Group A values of bond strenth ranged from a minimum of 10.14 Mpa to a maximum value of 14.73 Mpa with a mean value of 12.58 Mpa. In Group B the highest value of bond strength was 6.54 Mpa and the minimum 5.55 Mpa. The mean value of the bond strength for the entire group was 6.58 Mpa. In Group C the highest bond strength was 6.59 Mpa whereas the lowest bond strength was 4.84 Mpa. Mean value of the bond strength of Group C was calculated at 5.7 Mpa.
Etching with orthophosphoric acid combined with a dual-curing adhesive system and a dual-cured resin-composite cement was the technique that guaranteed the highest bond strength. Lowest bond strength values were obtained when dual self-adhesive cement was used.
本实验研究旨在比较传统粘结剂系统与最新一代粘结剂系统，评估其是否真的能成为间接修复体粘结，尤其是牙髓根管桩粘结的可行替代材料。
根据推出试验评估粘结方法的有效性，该试验在处理过的牙齿根部切片上进行。样本分为三组。A组（10个样本）：用37%正磷酸（Superlux-Thixo-etch-DMG）蚀刻30秒，结合双固化粘结剂系统（LuxaBond-Total Etch-DMG）、双固化树脂复合粘结剂（LuxaCore-DMG）和玻璃纤维桩（LuxaPost-DMG）。B组（10个样本）：自粘结树脂粘结剂（Breeze-Pentron Clinical）和玻璃纤维桩（LuxaPost-DMG）。C组（10个样本）：三步光固化、自酸蚀、自调节粘结剂（Contax-Total-etch-DMG）、双固化树脂复合粘结剂（LuxaCore-DMG）和玻璃纤维桩（LuxaPost-DMG）。通过检测桩-粘结剂-牙齿复合体在机械力作用下的抗断裂能力进行研究。使用美国伊利诺伊州芝加哥市SPSS公司的13.0版软件进行统计分析。
A组粘结强度值范围为最小值10.14兆帕至最大值14.73兆帕，平均值为12.58兆帕。B组粘结强度最高值为6.54兆帕，最低值为5.55兆帕。该组粘结强度平均值为6.58兆帕。C组粘结强度最高值为6.59兆帕，最低值为4.84兆帕。C组粘结强度平均值计算为5.7兆帕。
用正磷酸蚀刻结合双固化粘结剂系统和双固化树脂复合粘结剂是保证最高粘结强度的技术。使用双自粘结粘结剂时获得的粘结强度值最低。
