Facultad de Odontología, Universidad de Sevilla, Seville, Spain.
Med Oral Patol Oral Cir Bucal. 2012 Jan 1;17(1):e129-34. doi: 10.4317/medoral.17266.
This study examined whether the number and type of sutures used in oral surgery influence two ad hoc variables (incision plane and displaced area), which are two variables related to whether the suture needle is suitable for the task. Seventy-five TB-15 needles were studied, which were used to suture between zero and three mucosa and/subperiosteal sutures, producing 15 groups with 5 needles in each one. The incision plane and displaced area were measured for each group, which are two variables related to how the needle has worn and altered. Statistical treatment was conducted using the Kruskal-Wallis H test to compare multiple values and the Mann-Whitney U test to compare pairs. A multi-stage regression model was applied with the aim of predicting the changes in the dependent variables based on the number and type of sutures performed. The incision plane ranged from 126.67 to 346.24 µm among the different groups. The displaced area was measured as being between 14 524.83 µm² and 128 311.91 µm². The best predictive model for the incision plane obtained a coefficient of determination (R2) of 0.149, while it reached 0.249 for the displaced area. Subperiosteal sutures held more weighting among the variables studied. Mucosal sutures did not seem to greatly affect needle wear. Observations reported in this paper indicate that the needle should be changed after having performed two subperiosteal sutures, given the wear and change to the incision plane that is produced, which causes the needle's cutting ability to reduce.
本研究旨在探讨口腔外科缝线的数量和类型是否会影响两个特定变量（切口平面和移位面积），这两个变量与缝线针是否适合任务有关。研究共使用了 75 枚 TB-15 缝线针，用于缝合 0 至 3 个黏膜和/或骨膜缝线，产生了 15 组，每组 5 针。测量了每组的切口平面和移位面积，这两个变量与缝线针的磨损和变形有关。采用 Kruskal-Wallis H 检验进行统计处理，以比较多个值，采用 Mann-Whitney U 检验比较配对值。应用多阶段回归模型，旨在根据缝合的缝线数量和类型预测因变量的变化。不同组之间的切口平面范围从 126.67µm 到 346.24µm。移位面积测量值在 14524.83µm² 和 128311.91µm² 之间。切口平面的最佳预测模型的决定系数（R2）为 0.149，而移位面积则达到 0.249。骨膜缝线在研究的变量中具有更大的权重。黏膜缝线似乎不会对线针的磨损产生重大影响。本文的观察结果表明，由于切口平面的磨损和变化导致缝线针的切割能力降低，在完成两个骨膜缝线后应更换缝线针。
