Mushashe Amanda Mahammad, Amaral Rodrigo Otavio Jatahy Ferreira do, Rezende Carlos Eduardo Edwards, Filho Flares Baratto, Cunha Leonardo Fernandes da, Gonzaga Carla Castiglia
UP - Universidade Positivo, Graduate Program in Dentistry, Curitiba, PR, Brazil.
Braz Dent J. 2017 Jan-Feb;28(1):30-34. doi: 10.1590/0103-6440201601107. Epub 2016 Dec 12.
Sonic vibrations may improve the bond strength and durability of fiberglass posts by improving adhesive penetration into dentin as well as the cement flow. The objective of this study was to evaluate the effect of sonic vibrations on the bond strength between fiberglass posts and root dentin using the pull-out test. Bovine roots were endodontically treated and divided randomly into four groups (n=12): Group C - conventional cementation (control); Group SA - sonic vibration (Smart Sonic Device, FGM) of the adhesive system and conventional post accommodation; SP group - conventional adhesive application and sonic vibration of the post during accommodation; and SASP - sonic vibration of the system adhesive and the post during accommodation. The posts were cleaned, treated with a silane and adhesive system (Ambar, FGM), and cemented with a dual-cured resin cement (Allcem Core, FGM). After 24 h, the specimens were subjected to mechanical tests and failure analyses. Representative specimens were analyzed by a scanning electron microscope to observe the cementation line. The results were analyzed using ANOVA and Tukey's test (a=5%). The bond strengths were as follows: SASP (90.9±27.1 N), C (121.4±60.6 N), SA (127.6±31.8 N) and SP (156.4±41.3 N). The use of sonic vibrations during the application of adhesive or post cementation separately did not affect the bond strength but had a negative effect when used for both procedures.
声波振动可通过改善黏结剂渗入牙本质以及黏固剂的流动性，来提高玻璃纤维桩的粘结强度和耐久性。本研究的目的是使用拔出试验评估声波振动对玻璃纤维桩与牙根牙本质之间粘结强度的影响。对牛牙根进行根管治疗，并随机分为四组（n = 12）：C组 - 传统粘结（对照组）；SA组 - 对粘结系统进行声波振动（使用FGM公司的Smart Sonic Device）并采用传统的桩就位方式；SP组 - 采用传统的粘结剂应用方法，并在桩就位时进行声波振动；SASP组 - 在粘结系统和桩就位过程中均进行声波振动。将桩清洁、用硅烷和粘结系统（FGM公司的Ambar）处理，并用双固化树脂粘结剂（FGM公司的Allcem Core）粘结。24小时后，对标本进行力学测试和失效分析。通过扫描电子显微镜分析代表性标本以观察粘结线。使用方差分析和Tukey检验（α = 5%）对结果进行分析。粘结强度如下：SASP组（90.9±27.1 N）、C组（121.4±60.6 N）、SA组（127.6±31.8 N）和SP组（156.4±41.3 N）。单独在应用粘结剂或桩粘结过程中使用声波振动不会影响粘结强度，但在两个过程中都使用时会产生负面影响。
