Institute of Stomatology, College of Stomatology, Department of Conservative Dentistry and Endodontics, Nanjing Medical University, 136 Han Zhong Road, Nanjing 210029, PR China.
Dent Mater J. 2011;30(5):569-75. doi: 10.4012/dmj.2010-194. Epub 2011 Sep 23.
Percentage of gutta-percha-filled area (PGFA) was used to investigate the sealing ability of GuttaFlow. A total of 80 mandibular first premolars with single canal were randomly divided into 4 Groups (n=20) according to root canal filling technique and/or material - Group1: cold lateral condensation technique; Group 2: continuous wave condensation technique; Group 3: GuttaFlow; Group 4: GuttaFlow and accessory gutta-percha cones without lateral condensation. The PGFA values of Groups 3 and 4 were significantly higher than those of Groups 1 and 2 (p<0.05), but there were no significant differences between Group 3 and Group 4 (p>0.05). It was concluded that GuttaFlow provided superior sealing ability, such that accessory gutta-percha cones became unnecessary when filling root canals with GuttaFlow.
用根管充填后牙胶的百分比（PGFA）来评价 GuttaFlow 的封闭性能。80 个下颌第一前磨牙随机分为 4 组（每组 20 个），按根管充填技术和/或材料分组：1 组冷侧方加压技术；2 组连续波技术；3 组 GuttaFlow；4 组 GuttaFlow 加牙胶尖不做侧方加压。3 组和 4 组的 PGFA 值明显高于 1 组和 2 组（p<0.05），但 3 组和 4 组之间没有明显差异（p>0.05）。结论：GuttaFlow 有较好的封闭性能，当用 GuttaFlow 充填根管时，加牙胶尖就没有必要了。
