Nagpal Ajay, Annapoorna B M, Prashanth M B, Prashanth N T, Singla Munish, Deepak B S, Singh Ashmita, Tavane Pradeep N
Department of Conservative Dentistry and Endodontics KD Dental College and Hospital, Mathura-281001, Uttar Pradesh, India.
J Contemp Dent Pract. 2012 May 1;13(3):351-5. doi: 10.5005/jp-journals-10024-1150.
The objective of this study is to evaluate the vertical root fracture resistance of endodontically treated teeth obturated with - Tubli-Seal EWT/Gutta-percha, AH Plus/Gutta-percha, Epiphany SE sealer/Epiphany point.
Sixty-five single rooted premolars were decoronated and root length was 14 mm for each specimen. Fifty five teeth were enlarged up to ISO size 40 master apical file with stainless steel K-files using standardized preparation and remaining ten teeth were served as negative control. Then teeth were randomly assigned into different groups depending on sealer used for obturation as follows: Group 1: Negative control-no instrumentation was performed. Group 2: Positive control-gutta-percha with out the use of any sealer. Group 3: Experimental group-gutta-percha and Tubli-Seal EWT root canal sealer. Group 4: Experimental group-gutta-percha and AH Plus. Group 5: Experimental group-epiphany SE sealer and epiphany points. After 72 hours, the specimens were embedded in autopolymerizing resin leaving 7 mm of each root exposed and were subjected to fracture testing under universal testing machine at a crosshead speed of 1.0 mm per minute until the root fractured. Results were statistically analyzed using one-way ANOVA and independent t-test.
Showed that Epiphany SE sealer/Epiphany points showed highest mean fracture resistance and Tubli-Seal EWT group showed the least fracture resistance of all the materials tested. There was no statistically significant difference among experimental groups.
Epiphany SE sealer/Epiphany points demonstrated highest fracture resistance values than the other materials tested and intact tooth had highest resistance against vertical root fracture.
Epiphany SE sealer/Epiphany points may be one of the materials of choice in the endodontic treatment of teeth.
本研究的目的是评估用Tubli-Seal EWT/牙胶、AH Plus/牙胶、Epiphany SE封闭剂/Epiphany尖充填的根管治疗牙的垂直根折抗力。
65颗单根前磨牙去冠，每个标本的根长为14毫米。55颗牙齿使用标准化预备方法用不锈钢K锉扩大至ISO 40号主尖锉，其余10颗牙齿作为阴性对照。然后根据用于充填的封闭剂将牙齿随机分为不同组，如下：第1组：阴性对照——未进行器械操作。第2组：阳性对照——使用牙胶但未使用任何封闭剂。第3组：实验组——牙胶和Tubli-Seal EWT根管封闭剂。第4组：实验组——牙胶和AH Plus。第5组：实验组——Epiphany SE封闭剂和Epiphany尖。72小时后，将标本嵌入自凝树脂中，使每个根暴露7毫米，并在万能试验机上以每分钟1.0毫米的十字头速度进行断裂测试，直至牙根折断。结果采用单因素方差分析和独立t检验进行统计学分析。
显示Epiphany SE封闭剂/Epiphany尖在所有测试材料中显示出最高的平均抗折力，而Tubli-Seal EWT组显示出最低的抗折力。各实验组之间无统计学显著差异。
Epiphany SE封闭剂/Epiphany尖显示出比其他测试材料更高的抗折力值，完整牙齿对垂直根折的抗力最高。
Epiphany SE封闭剂/Epiphany尖可能是牙髓治疗中可供选择的材料之一。
