Ayrancı Ferhat, Ayrancı Leyla Benan, Özdoğan Alper, Özkan Serkan, Peker Mutlunur Önder, Aras Mutan Hamdi
Department of Oral Maxillofacial Surgery, Faculty of Dentistry, Ordu University, 52200, Ordu, Turkey.
Department of Endodontics, Faculty of Dentistry, Ordu University, 52200, Ordu, Turkey.
Lasers Med Sci. 2018 Nov;33(8):1685-1691. doi: 10.1007/s10103-018-2517-6. Epub 2018 Apr 26.
The aim of the present work was to measure the fracture resistance of endodontically treated teeth that were apicoected with different procedures. Seventy-two extracted human maxillary anterior teeth were included in this study. The specimens were randomly assigned to three main groups according to the apical surgery procedures and then two subgroups according to the irrigation protocols during root canal treatment and total of six groups were obtained (n = 12). Group 1: served as a control and apical surgery process was not performed in this group. Group 2: apical surgery process was performed with tungsten carbide fissure bur Group 3: apical surgery process was performed with Er:YAG laser. Subgroup a: In this group, the specimens were irrigated with %5 NaOCl. Subgroup b: 15% EDTA solution was filled into the root canal and then agitated using a 1.5 W/100 Hz diode laser. The specimens were filled and mounted in acrylic resin blocks and compression strength test was performed. Statistical analysis was performed using two-way ANOVA. The statistical analysis revealed that there were no statistical significant differences between apical surgery procedures (groups 1, 2, and 3) (p < 0.05). Apical resection procedures did not affect the fracture resistance Significant differences were determined between the subgroups (p < 0.05). Agitation of the EDTA with the diode laser reduced the fracture resistance of the specimens. The different canal irrigation techniques altered resistance to fracture; however, apical surgery procedures did not altered the resistance to fracture when compared with the control group.
本研究的目的是测量采用不同根尖手术方法进行根管治疗的牙齿的抗折性。本研究纳入了72颗拔除的人类上颌前牙。根据根尖手术方法将样本随机分为三个主要组，然后根据根管治疗期间的冲洗方案分为两个亚组，共得到六个组（n = 12）。第1组：作为对照组，该组未进行根尖手术。第2组：使用碳化钨裂钻进行根尖手术。第3组：使用铒激光进行根尖手术。亚组a：在该组中，样本用5%次氯酸钠冲洗。亚组b：将15%乙二胺四乙酸（EDTA）溶液注入根管，然后使用1.5W/100Hz二极管激光搅拌。将样本填充并固定在丙烯酸树脂块中，进行抗压强度测试。使用双向方差分析进行统计分析。统计分析显示，根尖手术方法（第1、2和3组）之间无统计学显著差异（p < 0.05）。根尖切除术不影响抗折性。亚组之间存在显著差异（p < 0.05）。用二极管激光搅拌EDTA会降低样本的抗折性。不同的根管冲洗技术改变了抗折性；然而，与对照组相比，根尖手术方法并未改变抗折性。
