Szerszeń Marcin, Higuchi Julia, Romelczyk-Baishya Barbara, Górski Bartłomiej, Łojkowski Witold, Pakieła Zbigniew, Mierzwińska-Nastalska Elżbieta
Department of Prosthodontics, Medical University of Warsaw, 02097 Warsaw, Poland.
Laboratory of Nanostructures, Institute of High Pressure Physics, Polish Academy of Sciences, 01424 Warsaw, Poland.
Materials (Basel). 2022 Feb 16;15(4):1476. doi: 10.3390/ma15041476.
The aim of this in vitro study was to assess the influence of microabrasive blasting on the physicochemical properties of dentine and shear bond strength (SBS) of self-adhesive resin cement (Maxcem Elite, Kerr, Orange, CA, USA) bonded to the dentine surface. Ninety cylindrical specimens with exposed dentine of human teeth were prepared and divided into three randomized, parallel sample sets A, B, and C. Groups B and C were subjected to abrasive blasting using a micro-sandblasting device (Microetcher IIa, Danville Materials, Carlsbad, CA, USA) with two gradations of AlO abrasives (Group B, abrasion with a gradation of 50 μm; group C, abrasion with a gradation of 27 μm). SEM imaging, profilometry, chemical composition analysis, contact angle measurements, surface free energy, and SBS tests were performed. The resulting data were statistically analyzed using the Statistica software (ver. 13.3, Tibco Software Inc., Palo Alto, CA, USA). Microabrasive blasting caused changes in surface topography, structural features, and the connection strength between the dentin surface and self-adhesive prosthetic cement. Air microabrasion through the multifactorial positive reorganization of the treated surface of dentine is recommended as a pretreatment method in fixed prosthodontics adhesive cementation protocols.
本体外研究的目的是评估微喷砂处理对牙本质物理化学性质以及自粘结树脂水门汀（Maxcem Elite，美国加利福尼亚州奥兰治市科尔公司）与牙本质表面粘结的剪切粘结强度（SBS）的影响。制备了90个暴露人牙牙本质的圆柱形标本，并随机分为三个平行样本组A、B和C。使用配备两种粒度AlO磨料的微喷砂装置（Microetcher IIa，美国加利福尼亚州卡尔斯巴德市丹维尔材料公司）对B组和C组进行喷砂处理（B组，使用粒度为50μm的磨料；C组，使用粒度为27μm的磨料）。进行了扫描电子显微镜成像、轮廓测定、化学成分分析、接触角测量、表面自由能和SBS测试。使用Statistica软件（版本13.3，美国加利福尼亚州帕洛阿尔托市Tibco软件公司）对所得数据进行统计分析。微喷砂处理导致了牙本质表面形貌、结构特征以及牙本质表面与自粘结修复水门汀之间连接强度的变化。建议在固定修复粘结水门汀操作流程中，将通过对牙本质处理表面进行多因素正向重组的空气微喷砂作为一种预处理方法。
