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首页> 外文期刊>Journal of Pharmacy and Bioallied Sciences >A Study to Assess the Bond Strength of Acrylic Teeth With Different Retentive Features
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A Study to Assess the Bond Strength of Acrylic Teeth With Different Retentive Features

机译：评估不同保留特征的丙烯酸牙齿粘合强度的研究

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Flexible denture base has been gaining attention as a denture base material because of its toxicological safety, comfort, and enhanced aesthetics. Debonding of acrylic teeth from the flexible denture base material has posed a great problem to the clinician and patient. This study aimed at comparing the bond strength between flexible denture base with acrylic teeth having different mechanical modifications.Materials and Methods:Forty mandibular molar teeth (Combination Acry Rock, Badia Polesine (Ro), Italy) were used in four groups for mechanical modifications on the ridge lap area. The groups were group 1 (no mechanical modifications), group 2 (round groove 2 mm in diameter and 2 mm deep on the ridge lap surface), group 3 (horizontal slot 2 mm deep, 2 mm wide, and 4 mm long prepared on the ridge lap surface of the teeth), and group 4 (T-shaped groove 2 mm deep, 2 mm wide, and length of 4 mm mesiodistally and 2 mm buccolingually prepared with a straight fissure bur). The acrylic teeth were attached to a wax block of dimension 1.2 cm × 1.2 cm × 2.5 cm. These were flasked and dewaxed, followed by injection molding with Valplast flexible denture base material. The bond strength was assessed by attaching the specimens to universal testing machine tested under a tensile load at a cross-head speed of 1 mm/min till it fractured. Data obtained were statistically evaluated by one-way analysis of variance and post hoc test.Results:There was significant increase in mean bond strength after various mechanical modifications. Group with T-shaped diatoric hole showed greatest bond strength value compared to other groups.Conclusion:Incorporating mechanical retentive features with increased surface area and undercut can improve the bonding of acrylic teeth to flexible denture base.
机译：由于其毒理学安全，舒适性和增强的美学，灵活的义齿基地一直受到义齿基础材料的关注。从柔性义齿基础材料中脱克里牙齿的剥离对临床医生和患者构成了很大的问题。本研究旨在将柔性义齿基碱与具有不同机械修饰的丙烯酸牙齿之间的粘合强度进行比较。材料和方法：四组颌骨磨牙（组合Acry Rock，Badia Polesine（Ro），意大利用于四组，用于机械修改岭圈区域。该组是第1组（无机械修饰），第2组（直径2mm的圆形槽2mm，在脊圈表面深的2毫米），第3组（水平槽2mm深，宽2mm，长2毫米，长时间准备脊的脊圈表面），和第4组（T形槽2mm深，宽2mm，长度为4mm的短裂和2mm Bucoling上用直裂毛制备）。将丙烯酸齿连接到蜡尺寸1.2cm×1.2cm×2.5cm的蜡块。将它们烧瓶和脱蜡，然后用戊克柔性义齿基材注塑成型。通过将样品连接到在拉伸载荷下以1mm / min的十字速度测试的通用试验机来评估粘合强度，直至其破裂。通过单向分析和后HOC Test.Results进行统计评估所获得的数据：各种机械修饰后的平均粘合强度显着增加。与其他群体相比，组与T形脱光孔的组显示出最大的粘合强度值。结论：将机械保持性具有增加的表面积和底切，可以改善丙烯酸牙齿与柔性义齿基底的粘合。

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