Faculty of Dentistry, International Medical University, Bukit Jalil, Kuala Lumpur, 57000, Malaysia.
BMC Oral Health. 2013 Oct 7;13:52. doi: 10.1186/1472-6831-13-52.
This study compared the effectiveness of a Specially Designed Paste Carrier technique with the Syringe-Spreader technique and the Syringe-Lentulo spiral technique in the intracanal placement of calcium hydroxide.
Three groups, each containing 15 single-rooted human anterior teeth were prepared using standardized Mtwo rotary instruments to a master apical file size 40 with 0.04 taper. Each group was filled with calcium hydroxide paste using: Syringe and #25 finger spreader (Group 1); Syringe and #4 rotary Lentulo spiral (Group 2), Specially Designed Paste Carrier (Group 3). Using pre-filling and post-filling radiographs in buccolingual and mesiodistal planes, the radiodensities at 1 mm, 3 mm, 5 mm, and 7 mm from the apical foramen were analyzed by ANOVA and Bonferroni post hoc tests.
Overall, The Specially Designed Paste Carrier technique showed a statistically significantly higher mean radiodensity than the two other compared techniques. No significant difference was detected between the Syringe-Lentulo spiral and the Syringe-Spreader techniques.
The Specially Designed Paste Carrier technique was more effective than the Syringe-Spreader technique and the Syringe-Lentulo spiral technique in the intracanal placement of calcium hydroxide.
本研究比较了专门设计的糊剂输送器技术与注射器-扩孔器技术和注射器-Lentulo 螺旋技术在根管内氢氧化钙放置中的效果。
每组 15 颗单根人前牙，使用标准化的 Mtwo 旋转器械制备至 40 号主尖锉，锥度为 0.04。每组均使用以下方法填充氢氧化钙糊剂：注射器和#25 指扩器（第 1 组）；注射器和#4 号旋转 Lentulo 螺旋（第 2 组），专门设计的糊剂输送器（第 3 组）。在颊舌向和近远中向平面上进行预填充和后填充射线照相，通过方差分析和 Bonferroni 事后检验分析距根尖孔 1mm、3mm、5mm 和 7mm 处的射线密度。
总体而言，专门设计的糊剂输送器技术的平均射线密度明显高于其他两种比较技术。注射器-Lentulo 螺旋技术和注射器-扩孔器技术之间未检测到显著差异。
专门设计的糊剂输送器技术在根管内氢氧化钙放置中比注射器-扩孔器技术和注射器-Lentulo 螺旋技术更有效。
