CAJ | 학술논문

背景：纤维桩修复中树脂核材料的选择可能影响桩核的整体强度。 　　目的：比较5种树脂核材料分别与玻璃纤维桩结合后的整体抗折强度。 　　方法：将50个viva玻璃纤维桩随机分为5组，分别与MEDENTAL双重固化树脂水门汀、伊蒂娜双重固化树脂水门汀、Bisco BisCem树脂水门汀、3M光固化纳米复合树脂P60及PULPDENT双重固化树脂水门汀黏结，将5组桩核的根管部分分别用自凝塑料包埋，固化后固定于万能试验机上并与牙体长轴成135°角加载于核部，加载速度为1.0 mm/min，直至断裂，测得断裂时受力情况。 　　结果与结论：MEDENTAL双重固化树脂水门汀组、伊蒂娜双重固化树脂水门汀组、Bisco BisCem树脂水门汀组、3M 光固化纳米复合树脂 P60组及 PULPDENT 双重固化树脂水门汀组的抗折强度分别为(83.248±7.857)，(89.230±4.326)，(95.188±5.147)，(76.646±6.463)，(83.064±3.964) N。除 MEDENTAL双重固化树脂水门汀组与 PULPDENT 双重固化树脂水门汀组抗折强度无差异外，其余各组间两两比较差异均有显著性意义(P<0.05)。结果表明Bisco BisCem树脂水门汀与纤维桩结合后具有较高的抗折强度。
배경：섬유장수복중수지핵재료적선택가능영향장핵적정체강도。 　　목적：비교5충수지핵재료분별여파리섬유장결합후적정체항절강도。 　　방법：장50개viva파리섬유장수궤분위5조，분별여MEDENTAL쌍중고화수지수문정、이체나쌍중고화수지수문정、Bisco BisCem수지수문정、3M광고화납미복합수지P60급PULPDENT쌍중고화수지수문정점결，장5조장핵적근관부분분별용자응소료포매，고화후고정우만능시험궤상병여아체장축성135°각가재우핵부，가재속도위1.0 mm/min，직지단렬，측득단렬시수력정황。 　　결과여결론：MEDENTAL쌍중고화수지수문정조、이체나쌍중고화수지수문정조、Bisco BisCem수지수문정조、3M 광고화납미복합수지 P60조급 PULPDENT 쌍중고화수지수문정조적항절강도분별위(83.248±7.857)，(89.230±4.326)，(95.188±5.147)，(76.646±6.463)，(83.064±3.964) N。제 MEDENTAL쌍중고화수지수문정조여 PULPDENT 쌍중고화수지수문정조항절강도무차이외，기여각조간량량비교차이균유현저성의의(P<0.05)。결과표명Bisco BisCem수지수문정여섬유장결합후구유교고적항절강도。
BACKGROUND:Selection of resin core materials may affect the overal strength of the fiber posts. OBJECTIVE:To compare the overal flexural strength of five kinds of resin core materials combined with glass fiber posts. METHODS:Fifty viva glass fiber posts were randomly divided into five groups respectively binding to five different resin materials for repair:group A, MEDENTAL dual curing resin cement+glass fiber post;Group B, Tina dual curing resin cement+glass fiber post;group C, Bisco BisCem+glass fiber post;group D, 3M nano composite resin curing light P60+glass fiber post;group E, PULPDENT dual curing resin cement+glass fiber post. The root canals were embedded with self-curing plastic, and fixed in the universal testing machine. The load in tooth length axis was added onto the core at a 135° angle with a loading speed of 1.0 mm/min, until the fracture. Then, the stress at fracture and the fracture mode were measured. RESULTS AND CONCLUSION:The flexural strength was (83.248±7.857) N in group, (89.230±4.326) N in group B, (95.188±5.147) N in group C, (76.646±6.463) N in group D, and (83.064±3.964) N in group E. Except groups A and E, there were significant differences between every two groups (P<0.05). These findings indicate that Bisco BisCem resin cement binding to the fiber post can obtain a higher flexural strength.