CLINICAL EVALUATION OF FLOWABLE COMPOSITE RESIN

流动性复合树脂的临床评价

• 批准号: 7376290
• 负责人: Juan J. L. Lertora
• 金额: $ 0.12万
• 依托单位: TULANE UNIVERSITY OF LOUISIANA
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-12-01 至 2006-11-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7376290
• 关键词: CLINICAL; EVALUATION; FLOWABLE; COMPOSITE; RESIN

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. This study will examine the clinical efficacy of a newly developed flowable composite resin for the restoration of small occlusal caries occlusal lesions. Small carious lesion occlusal lesions will be restored with one of two flowable composite resins. One Tetric-Flow is a well-recognized composite resin with decreased filler loading to improve adaptation. The other is a new material from L. D. Caulk. These materials will be placed in two occlusal cavity preparations in the same patient and evaluated for wear, retention, color match, marginal adaptation, anatomic form, marginal discoloration, axial contour, and secondary caries. Post-operative Sensitivity will be measured using a Visual Analog Scale and Gingival Condition will be assessed using the Gingival Index of Loe and Silness. Thirty class 1 restorations of each material for a total of 60 restorations will be inserted. The lesions will be prepared and caries removed, with rubber dam isolation. All bonding will be done using each manufacturer's bonding agent to moist surfaces. The two preparations will receive the different composites and different adhesive techniques to evaluate those systems. The restoration will be placed in one or two increments with each increment cured for 20 seconds with a visible light-curing unit. Carbide finishing burs will be used to remove gross excess, followed by finishing strips and disks (Enhance Polishing System). Each restoration will be evaluated directly and indirectly at baseline (one week after restoration placement), 3 months, 6 months, and one year. Using calibrated examiners, each restoration will be evaluated for marginal discoloration, secondary caries, loss of anatomical form, retention, surface texture, and marginal adaption. Slides will document marginal staining of the composite restoration. Impressions will be made at each recall and used to determine wear of the restorations. Groups will be compared annually using an ANOVA for Repeated Measures with the level of significance set at .05.

该子项目是利用NIH/NCRR资助的中心赠款提供的资源的许多研究子项目之一。子项目和研究者（PI）可能从另一个NIH来源获得主要资金，因此可以在其他CRISP条目中表示。所列机构为中心，不一定是研究者所在机构。本研究将探讨一种新开发的流动性复合树脂修复小龋的临床效果。小的龋损咬合损伤将用两种流动复合树脂中的一种修复。One Tetric-Flow是一种公认的复合树脂，具有降低的填料负载以提高适应性。另一个是L. D.塞住。这些材料将被放置在同一患者的两个咬合腔准备中，并评价磨损、固位、颜色匹配、边缘适应性、解剖形状、边缘变色、轴向轮廓和继发性龋。术后敏感度将使用视觉模拟量表进行测量，牙龈状况将使用Loe和Silness牙龈指数进行评估。将插入每种材料的30个1类样本，总计60个样本。准备病变并去除龋齿，使用橡胶坝隔离。将使用各制造商的粘合剂对潮湿表面进行所有粘合。这两种制剂将接受不同的复合材料和不同的粘合技术，以评估这些系统。修复体将以一个或两个增量放置，每个增量用可见光固化装置固化20秒。将使用硬质合金精加工布尔斯去除总多余量，然后使用精加工条和圆盘（增强抛光系统）。将在基线（修复体放置后1周）、3个月、6个月和1年时直接和间接评价每个修复体。使用校准的检查者，将对每个修复体的边缘变色、继发性龋、解剖形态丧失、保持、表面纹理和边缘适应性进行评价。载玻片将记录复合修复体的边缘染色。将在每次召回时进行测试，并用于确定磨损情况。每年将使用重复测量的ANOVA对各组进行比较，显著性水平设定为0.05。