上颌前磨牙大II类牙槽的玻璃纤维定向与放置抗断裂的体外研究

S. Khan, Muskan Sitlani, Suchi Pandey, S. Singh, P. Mishra, A. Narang
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引用次数: 0

摘要

研究和评估不同的interlight玻璃纤维放置和取向如何影响上颌前磨牙大II类腔的抗骨折性-一项体外研究。对50颗提取的人上颌前磨牙进行II类(MOD)牙槽排列,排列尺寸均匀,随机分为5组(每组10颗):I组为复合材料;组II包括复合+水平交错放置在牙龈和牙髓底;第三组包含复合+水平交错放置,仅在牙髓层;第四组包括牙龈和牙髓地板的复合+垂直交错放置;V组包含复合+ Interlig芯片。在修复和热循环过程中,使用万能试验机测试所有样品的抗断裂性。在体视显微镜下观察断裂模式。数据分析采用单因素方差分析和Tukey检验,显著性值为p0.05。对照组断裂强度为736.8640 N,第2组为1233.4480 N,第3组为1223.2260 N,第4组为1185.0440 N,第5组为797.5600 N。除1组外,5组骨折强度高于其他各组,差异无统计学意义。纤维强化复合材料可显著提高宽型II类中牙合远端前磨牙腔的抗断裂能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
To Study Fracture Resistance of Interligtm Glass Fiber Orientation and Placement on Large Class II Cavities in Maxillary Premolars: An in Vitro Study
To examine & assess how varied InterligTM glass fibre placement & orientation affect fracture resistance of large class II cavities in maxillary premolars -An In Vitro study. Class II (MOD) cavities were organized with uniform dimensions on 50 extracted human maxillary premolars, and samples were erratically distributed into 5 groups (n = 10 each) as follows: Group I contains composite materials; Group II contains composite + horizontal Interlig placement on the gingival & pulpal floors; Group III contains composite + horizontal Interlig placement only on the pulpal floors; Group IV contains composite + vertical Interlig placement on the gingival & pulpal floors; and Group V contains composite + Interlig chips. Fracture resistance of all samples was tested using universal testing machine following restorations and the thermocycling process. Under a stereomicroscope, the fracture modes were examined. One-way ANOVA & Tukey test were used to analyse data, with significance values of P 0.05. The fracture strength of control group was 736.8640 N while it was 1233.4480 N for group 2, 1223.2260 N for group 3, 1185.0440 N for group 4 and 797.5600 N for group 5. Fracture strength of group 5 was more than other groups except for group 1, there was no statistically substantial modifications. Fortification of composite with fiber does upsurge fracture resistance of wide Class II mesio-occluso-distal premolars cavities significantly.
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