Fracture resistance of endodontically treated premolars restored with direct fiberglass-reinforced composite in MOD cavities.

Journal of Clinical Dentistry and Oral Health Pub Date : 1900-01-01 DOI:10.35841/oral-health.3.2.1-5

F. Piccioli

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引用次数: 1

Abstract

Introduction: Direct composite restorations in endodontically treated teeth preserve tooth structure. The objective of this study was to evaluate fracture resistance of premolars with MOD preparation and endodontic treatment restored with composite resin and reinforced with fiberglass tape occlusally or interproximally. Methods: N = 33 sound human upper premolars with similar dimensions were selected. The teeth were randomly divided into 3 groups (n=11), with the control group not receiving any endontontic or restorative preparation. The remaining 2 groups were GO: teeth with endodontic treatment, MOD preparation and cusp coverage with fiberglass tape applied to the occlusal surface and GP: teeth with endodontic treatment, MOD preparation without cusp coverage, but fiberglass tape applied mesially and distally to restore the marginal ridges. All 33 teeth were embedded in acrylic resin and underwent fracture strength test in a universal testing machine (0.1 mm/minute) until fracture. The fracture pattern was classified into four types (I, II, III and IV). The fracture resistance values were analyzed using one-way ANOVA (p

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直接玻璃纤维增强复合材料修复牙髓治疗前磨牙的抗折性。

介绍:牙髓治疗后的直接复合修复体可以保护牙齿结构。本研究的目的是评估MOD预备和根管治疗后的前磨牙在咬合或近端间用复合树脂修复和玻璃纤维带加固后的抗骨折性。方法:选择33颗尺寸相近的正常上颌前磨牙。将牙齿随机分为3组(n=11)，对照组不接受任何口腔内修复制剂。其余2组分别为GO组:经根管治疗、MOD准备和牙尖覆盖的牙齿，在咬合面应用玻璃纤维带;GP组:经根管治疗、MOD准备不覆盖牙尖，但在近端和远端应用玻璃纤维带修复边缘牙脊。33颗牙均包埋在丙烯酸树脂中，在万能试验机(0.1 mm/min)进行断裂强度测试，直至断裂。将断裂模式分为I、II、III和IV型。断裂阻力值采用单因素方差分析(p

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Journal of Clinical Dentistry and Oral Health

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