Tanomaru-Filho Mário, Chaves Faleiros Frederico Bordini, Saçaki Juliana Nogueira, Hungaro Duarte Marco Antonio, Guerreiro-Tanomaru Juliane Maria
Department of Restorative Dentistry, Araraquara Dental School, São Paulo State University, UNESP, Araraquara, SP, Brazil.
J Endod. 2009 Oct;35(10):1418-21. doi: 10.1016/j.joen.2009.07.009.
To evaluate calcium ion release and pH of Sealer 26 (S26) (Dentsply, Rio de Janeiro, RJ, Brazil), white mineral trioxide aggregate (MTA), Endo CPM Sealer (CPM1) (EGEO SRL Bajo licencia MTM Argentina SA, Buenos Aires, Argentina), Endo CPM Sealer in a thicker consistency (CPM 2), and zinc oxide and eugenol cement (ZOE).
Material samples (n = 10) were placed in polyethylene tubes and immersed in 10 mL of distilled water. After 3, 6, 12, 24, and 48 hours and 7, 14, and 28 days, the water pH was determined with a pH meter, and calcium release was assessed by atomic absorption spectrophotometry. An empty tube was used as the control group.
The control group presented a pH value of 6.9 at all studied periods and did not show the presence of calcium ion. S26 presented greater hydroxyl ion release up to 12 hours (p < 0.05). From 24 hours until 28 days, S26, MTA, CPM1, and CPM2 had similar results. In all periods, ZOE presented the lowest hydroxyl ion release. CPM1, followed by CPM2, released the most calcium ions until 24 hours (p < 0.05). Between 48 hours and 7 days, CPM1 and CPM2 had the highest release. A greater calcium ion release was observed for CPM2, followed by CPM1 at 14 days and for S26, CPM1, and CPM2 at 28 days. ZOE released the least calcium ions in all periods.
Sealer 26, MTA, and Endo CPM sealer at normal or thicker consistency release hydroxyl and calcium ions. Endo CPM sealer may be an alternative as root-end filling material.
为评估牙胶尖封闭剂26（S26）（登士柏公司，巴西里约热内卢）、白色矿物三氧化物聚合体（MTA）、Endo CPM封闭剂（CPM1）（EGEO SRL公司，阿根廷布宜诺斯艾利斯，根据MTM阿根廷公司SA许可）、较稠质地的Endo CPM封闭剂（CPM2）以及氧化锌丁香酚水门汀（ZOE）的钙离子释放情况和pH值。
将材料样本（n = 10）置于聚乙烯管中，浸入10 mL蒸馏水中。在3、6、1
