Dultra Fábio, Barroso Juliana Machado, Carrasco Laise Daniela, Capelli Alexandre, Guerisoli Danilo M Zanello, Pécora Jesus Djalma
Department of Restorative Dentistry, Ribeirão Preto Dental School, University of São Paulo, Ribeirão Preto, SP, Brazil.
J Appl Oral Sci. 2006 Oct;14(5):341-5. doi: 10.1590/s1678-77572006000500008.
To compare the apical sealing ability of four root canal sealers.
Forty extracted human maxillary canines were instrumented 1 mm short of the anatomical apex and randomly assigned to four groups (n=10), according to the root canal sealer used for obturation: Endofill, AH Plus, EndoREZ and Epiphany. Root canals were obturated with gutta-percha points, except for the Epiphany group, in which resin points (Resilon) were used. The teeth were immersed in India ink for seven days and clarified using methyl salicylate. The extent of apical dye penetration was measured with a measuroscope in all aspects of the canal.
AH Plus (0.02 mm +/- 0.07), Epiphany (0.00 mm +/- 0.00) and EndoREZ (0.32 mm +/- 0.62) did not differ statistically to each other (p>0.01). EndoFill presented the highest dye penetration mean (0.83 mm +/- 0.73) and was statistically different from the other sealers (p<0.01).
The resin-based root canal sealers presented lesser apical microleakage than the zinc oxide and eugenol based sealer. No statistical differences were observed among resin based sealers.
比较四种根管封闭剂的根尖封闭能力。
选取40颗拔除的人上颌尖牙，预备至距解剖根尖1mm处，根据用于根管充填的封闭剂分为四组（n = 10）：Endofill、AH Plus、EndoREZ和Epiphany。除Epiphany组使用树脂尖（Resilon）外，其余组均用牙胶尖进行根管充填。将牙齿浸入印度墨水中7天，然后用冬青油进行透明处理。用测量显微镜测量根管各面的根尖染料渗透程度。
AH Plus（0.02mm±0.07）、Epiphany（0.00mm±0.00）和EndoREZ（0.32mm±0.62）之间无统计学差异（p>0.01）。EndoFill的染料渗透平均值最高（0.83mm±0.73），与其他封闭剂有统计学差异（p<0.01）。
树脂类根管封闭剂的根尖微渗漏比氧化锌丁香酚类封闭剂少。树脂类封闭剂之间未观察到统计学差异。
