{"title":"三种不同的桩核系统和两种不同的修复剂对根管治疗后的牙齿的抗折性的比较研究","authors":"Neena Chandran, Noushad M C, Bijith Balan","doi":"10.24327/IJRSR.2017.0805.0279","DOIUrl":null,"url":null,"abstract":"Purpose: To compare fracture resistance and primary mode of failure of endodontically treated teeth with three different posts systems and two variant luting agents. Materials and Methods: Root canal treatment was performed on 40 maxillary incisors and samples were divided into 4 groups. For three experimental groups post space preparation was done and teeth were restored with cast post-core (Group B), prefabricated glass fibre post (everStick post) with composite core (Group C) and prefabricated zirconia posts with composite core (Group D). Control group (A) samples were selected with intact coronal structure. Post space was prepared in all samples. Two type of luting cements dual cure resin cement (Luxacore Z) and glass ionomer cement (Fuji I, GC) were used for post cementation. The core was standardized to 4mm × 5mm. Prepared samples were subjected to compressive load of 0.5mm/min at 135o angulation. The load at which fracture occurred and fracture mode were analysed statistically by one way ANOVA, post-hoc tukey test and chi-square test. Results: The findings showed statistically significant difference between failure loads. The mean load required to fracture glass fibre was highest (711MPa) and least for control group (231MPa). The glass fibre posts and zirconia posts showed favorable fracture. Conclusion: The results concluded that endodontically treated teeth without post core system showed least fracture resistance signifying need to reinforce tooth. Use of glass fibre post (everStick post) showed highest mean fracture resistance regardless of luting agent.","PeriodicalId":14198,"journal":{"name":"International journal of recent scientific research","volume":"70 1","pages":"17087-17091"},"PeriodicalIF":0.0000,"publicationDate":"2017-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A comparative evaluation of fracture resistance of endodontically treated teeth restored with three different post and core systems and two different luting agents – an invitro study\",\"authors\":\"Neena Chandran, Noushad M C, Bijith Balan\",\"doi\":\"10.24327/IJRSR.2017.0805.0279\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Purpose: To compare fracture resistance and primary mode of failure of endodontically treated teeth with three different posts systems and two variant luting agents. Materials and Methods: Root canal treatment was performed on 40 maxillary incisors and samples were divided into 4 groups. For three experimental groups post space preparation was done and teeth were restored with cast post-core (Group B), prefabricated glass fibre post (everStick post) with composite core (Group C) and prefabricated zirconia posts with composite core (Group D). Control group (A) samples were selected with intact coronal structure. Post space was prepared in all samples. Two type of luting cements dual cure resin cement (Luxacore Z) and glass ionomer cement (Fuji I, GC) were used for post cementation. The core was standardized to 4mm × 5mm. Prepared samples were subjected to compressive load of 0.5mm/min at 135o angulation. The load at which fracture occurred and fracture mode were analysed statistically by one way ANOVA, post-hoc tukey test and chi-square test. Results: The findings showed statistically significant difference between failure loads. The mean load required to fracture glass fibre was highest (711MPa) and least for control group (231MPa). The glass fibre posts and zirconia posts showed favorable fracture. Conclusion: The results concluded that endodontically treated teeth without post core system showed least fracture resistance signifying need to reinforce tooth. 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引用次数: 0
摘要
目的:比较三种不同桩位系统和两种不同植牙剂对根管治疗牙的抗折性和主要失效模式。材料与方法:对40个上颌切牙进行根管治疗,分为4组。三个实验组分别采用铸造桩核(B组)、预制玻璃纤维桩(everStick桩)复合桩核(C组)和预制氧化锆桩复合桩核(D组)进行桩位准备和牙体修复。对照组(A组)冠状结构完整。在所有样品中都准备了Post space。采用双固化树脂水泥(Luxacore Z)和玻璃离子水泥(Fuji I, GC)两种类型的水泥进行后固井。芯被标准化为4mm × 5mm。制备的样品在1350角方向承受0.5mm/min的压缩载荷。采用单因素方差分析、事后检验和卡方检验对断裂发生载荷和断裂方式进行统计学分析。结果:失效载荷之间的差异有统计学意义。断裂玻璃纤维所需的平均载荷最大(711MPa),对照组最小(231MPa)。玻璃纤维桩和氧化锆桩均表现出良好的断裂。结论:无桩核系统根管治疗后的牙体抗折断能力最小,提示需要进行牙体加固。使用玻璃纤维桩(everStick桩),无论使用何种粘结剂,其平均抗断裂能力最高。
A comparative evaluation of fracture resistance of endodontically treated teeth restored with three different post and core systems and two different luting agents – an invitro study
Purpose: To compare fracture resistance and primary mode of failure of endodontically treated teeth with three different posts systems and two variant luting agents. Materials and Methods: Root canal treatment was performed on 40 maxillary incisors and samples were divided into 4 groups. For three experimental groups post space preparation was done and teeth were restored with cast post-core (Group B), prefabricated glass fibre post (everStick post) with composite core (Group C) and prefabricated zirconia posts with composite core (Group D). Control group (A) samples were selected with intact coronal structure. Post space was prepared in all samples. Two type of luting cements dual cure resin cement (Luxacore Z) and glass ionomer cement (Fuji I, GC) were used for post cementation. The core was standardized to 4mm × 5mm. Prepared samples were subjected to compressive load of 0.5mm/min at 135o angulation. The load at which fracture occurred and fracture mode were analysed statistically by one way ANOVA, post-hoc tukey test and chi-square test. Results: The findings showed statistically significant difference between failure loads. The mean load required to fracture glass fibre was highest (711MPa) and least for control group (231MPa). The glass fibre posts and zirconia posts showed favorable fracture. Conclusion: The results concluded that endodontically treated teeth without post core system showed least fracture resistance signifying need to reinforce tooth. Use of glass fibre post (everStick post) showed highest mean fracture resistance regardless of luting agent.