Efficacy of several techniques for the removal of calcium hydroxide medicament from root canals
Efficacy of several techniques for the removal of calcium hydroxide medicament from root canals
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DOI：
10.1111/j.1365-2591.2011.01854.x
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发表时间：
2011-06-01
影响因子：
5
通讯作者：
Yesilyurt, C.
中科院分区：
文献类型：
--
作者：
Tasdemir, T.;Celik, D.;Yesilyurt, C.
目的比较几种方法去除根管内氢氧化钙（Ca（OH）2）的效果。沿器械根管的长度沿着对牙齿进行纵向切片。随后用金属丝重新组装牙根。Ca（OH）（2）置入根管内后，用4种方法去除。I组用2.5%NaOCl 5mL冲洗牙体。组II以与组I相同的方式处理，但除NaOCl外还使用5 mL 17% EDTA。在第三组中，用5mL的2.5%NaOCl冲洗牙齿，并通过超声装置进行搅拌。在第IV组中，用5 mL 2.5% NaOCl冲洗牙齿，并使用CanalBrush清除Ca（OH）（2）。根被拆开，数码照片拍摄。测量残留Ca（OH）（2）占总根管表面积的百分比。结果使用CanalBrush和NaOCl被动超声搅拌组的残留材料明显少于其他组（P <0. 05）。NaOCl + EDTA与NaOCl + EDTA注射器给药的效果无显著性差异（P > 0.05）。CanalBrush和NaOCl的超声搅拌比仅冲洗技术显著更有效。
P>AimTo compare the efficacy of several techniques for the removal of calcium hydroxide (Ca(OH)(2)) from root canals.MethodologyThe root canals of 24 freshly extracted human mandibular premolars were prepared with ProTaper rotary instruments. The teeth were sectioned longitudinally along the length of the instrumented canals. The roots were subsequently reassembled with wires. After Ca(OH)(2) was placed into the canals, four techniques were used for its removal. In Group I, the teeth were irrigated with 5 mL of 2.5% NaOCl. Group II was treated in the same manner as Group I, but 5 mL of 17% EDTA was used in addition to NaOCl. In Group III, the teeth were irrigated with 5 mL of 2.5% NaOCl and agitated by an ultrasonic unit. In Group IV, the teeth were irrigated with 5 mL of 2.5% NaOCl and a CanalBrush was used to remove the Ca(OH)(2). The roots were disassembled and digital photographs were taken. Measurements of residual Ca(OH)(2) were performed as percentages of the overall canal surface area. The data was analysed with one-way ANOVA with post hoc Tukey test.ResultsSignificantly less residual material was obtained with a CanalBrush and passive ultrasonic agitation of NaOCl than the other groups (P < 0.05). There was no significant difference between syringe delivery of NaOCl and NaOCl + EDTA (P > 0.05).ConclusionsNone of the techniques removed the Ca(OH)(2) dressing completely. CanalBrush and ultrasonic agitation of NaOCl were significantly more effective than irrigant-only techniques.