Burkhardt Rino, Preiss Axel, Joss Andreas, Lang Niklaus P
School of Dental Medicine, University of Bern, Bern, Switzerland.
Clin Oral Implants Res. 2008 Mar;19(3):314-9. doi: 10.1111/j.1600-0501.2007.01352.x. Epub 2008 Jan 3.
To evaluate the influence of flap tension on the tearing characteristics of mucosal tissue samples in relation to various suture and needle characteristics.
Lining and masticatory mucosal tissue samples obtained from pig jaws were prepared for in vitro testing. Tension tearing diagrams of 60 experiments were traced for 3-0, 5-0 and 7-0 sutures with applied forces up to 20 N. In the second part, the same experiments were repeated with 100 diagrams to test the influence of needle characteristics with 5-0 and 6-0 sutures using only gingival tissue samples.
3-0 sutures mainly lead to tissue breakage at an average of 13.4 N. In contrast, 7-0 sutures only resulted in breakage of the thread at a mean applied force of 3.7 N. With 5-0 sutures, both events occurred at random at a mean force of 14.6 N. Irrespective of the needle characteristics, the mean breaking force for gingival samples with 5-0 and 6-0 sutures was approximately 10 N.
Tissue trauma may be reduced by choosing finer suture diameters, because thinner (6-0, 7-0) sutures lead to thread breakage rather than tissue breakage.
评估皮瓣张力对黏膜组织样本撕裂特性的影响，并研究各种缝合线和缝针特性之间的关系。
从猪颌骨获取衬里和咀嚼黏膜组织样本，准备用于体外测试。对60次实验的张力撕裂图进行了追踪，使用了3-0、5-0和7-0缝合线，施加力高达20N。在第二部分，仅使用牙龈组织样本，用100张图重复相同实验，以测试缝针特性的影响，使用5-0和6-0缝合线。
3-0缝合线主要导致组织断裂，平均力为13.4N。相比之下，7-0缝合线仅在平均施加力为3.7N时导致缝线断裂。对于5-0缝合线，两种情况在平均力为14.6N时随机发生。无论缝针特性如何，5-0和6-0缝合线的牙龈样本平均断裂力约为10N。
选择更细的缝合线直径可减少组织创伤，因为较细的（6-0、7-0）缝合线会导致缝线断裂而非组织断裂。
