Thaís Yumi Umeda Suzuki, João Eduardo Gomes-Filho, André Luiz Fraga Briso, Wirley Gonçalves Assunção, Paulo Henrique dos Santos
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引用次数: 5
摘要
目的本研究的目的是评估不同材料的玻璃纤维桩与根内牙本质不同区域的粘结强度。方法根管充填后，将40颗牙齿按粘接方式分为5组：Adper Single Bond 2+RelyX ARC、Excite DSC+RelyX ARC（EXC）、Adper SE Plus+RelyX ARC（SEP）、RelyX Unicem和Set。在结合过程之后，对根部进行切片，从每三分之一处获得待分析的切片。使用通用试验机（Emic DL 3000）中的推出试验，以0.5 mm/分钟的十字头速度在桩间隙的不同区域（颈部、中部和心尖）测量结合强度。数据经过方差分析和Fisher检验（α=.05）。结果在所有实验条件下，SEP组的推出粘结强度最高，而EXC组在中部和心尖区域没有显著差异。除EXC组外，所有组的颈顶端方向的推出结合强度都有所下降，不同区域之间没有差异。结论树脂材料和根内深度的不同相互作用影响了粘接材料与牙本质基质的结合强度。
Influence of the depth of intraradicular dentin on the pushout bond strength of resin materials
Aim
The aim of the present study was to evaluate the pushout bond strength between glass-fiber posts to different regions of intraradicular dentin with different materials for adhesive cementation.
Methods
After endodontic filling, 40 teeth were divided into five groups according to adhesive cementation: Adper Single Bond 2 + RelyX ARC, Excite DSC + RelyX ARC (EXC), Adper SE Plus + RelyX ARC (SEP), RelyX Unicem, and Set. After the bonding process, roots were sectioned obtaining slices to be analyzed from each third. The bond strength was measured using the pushout test in a universal testing machine (Emic DL 3000) at a cross-head speed of .5 mm/minutes in different areas of the post space (cervical, middle, and apical). Data were subjected to analysis of variance and Fisher's test (α = .05).
Results
The highest values for the pushout bond strength were found for the SEP group in all experimental conditions, without a significant difference for the EXC group in the middle and apical regions. There was a decrease in pushout bond strength in the cervical-apical direction for all groups, except the EXC group, which did not show a difference among the different regions.
Conclusions
The different interactions of the resin materials and the intraradicular depth influenced the bond strength of adhesives materials to dentin substrate.
期刊介绍：
Journal of Investigative and Clinical Dentistry (JICD) aims to publish quality, peer reviewed original research and topical reviews on all aspects of investigative and clinical dentistry and craniofacial research, including molecular studies related to oral health and disease. Although international in outlook, the Editor especially encourages papers from the Asia Pacific. The journal also aims to provide clinicians, scientists and students of dentistry with a knowledge transfer platform for rapid publication of reports through an international journal, which will be available free online until 2012. Its scope, therefore, is broad, inclusive and international, but with a particular focus on Asia Pacific. The Editor welcomes manuscripts in the following key thematic areas in oral and maxillofacial sciences: Community Dentistry and Oral Epidemiology, Conservative Dentistry, Dental Biomaterials, Dental Pedagogy, Endodontics and Traumatology, Implant Dentistry, Oral Biosciences, Oral and Maxillofacial Surgery, Oral Medicine, Oral Pathology and Oral Microbiology, Orthodontics, Oral Radiology, Oral Rehabilitation, Paedodontics, Periodontology and Periodontal Medicine.
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