Abstract：
OBJECTIVE: In this study, we aimed to compare the efficiency of different osteotomy techniques for Lefort 1 osteotomy in an experimental caprine skull model.
METHODS: Twelve caprine skulls were used for the study. Skulls were divided into 3 groups: (1) manual chisel group, (2) Lindemann bur group, and (3) piezo osteotomy group. Bilateral osteotomies were performed on each skull. Results were evaluated with three-dimensional computerized tomography scans and macroscopic observations of the mucosal tears and soft tissue.
RESULTS: The mean length of the bone gap in the manual, Lindemann, and piezo groups was 4.8 (±0.7), 3.38 (±1.49), and 1.39 (±0.3) mm, respectively ( P < 0.05). The mean number of comminuted fractures in the manual, Lindemann, and piezo groups was 5.5 (±1.4), 1.6 (±0.3), and 0.6 (±0.5), respectively ( P < 0.05). Mucosal tearing and soft tissue damage based on subjective inspection observations were negligible in the piezo technique. Soft tissue and mucosal damage were observed significantly more in the manual chisel osteotomy method compared with the other 2 techniques.
CONCLUSIONS: We anticipate that piezo, which has started to be used in new application areas besides rhinoplasty, will continue to be used more widely, especially in reconstructive orthognathic surgery, due to the minimal damage it causes to tissues. With the long-term results, much healthier interpretations can be made.
METHODS: Twelve caprine skulls were used for the study. Skulls were divided into 3 groups: (1) manual chisel group, (2) Lindemann bur group, and (3) piezo osteotomy group. Bilateral osteotomies were performed on each skull. Results were evaluated with three-dimensional computerized tomography scans and macroscopic observations of the mucosal tears and soft tissue.
RESULTS: The mean length of the bone gap in the manual, Lindemann, and piezo groups was 4.8 (±0.7), 3.38 (±1.49), and 1.39 (±0.3) mm, respectively ( P < 0.05). The mean number of comminuted fractures in the manual, Lindemann, and piezo groups was 5.5 (±1.4), 1.6 (±0.3), and 0.6 (±0.5), respectively ( P < 0.05). Mucosal tearing and soft tissue damage based on subjective inspection observations were negligible in the piezo technique. Soft tissue and mucosal damage were observed significantly more in the manual chisel osteotomy method compared with the other 2 techniques.
CONCLUSIONS: We anticipate that piezo, which has started to be used in new application areas besides rhinoplasty, will continue to be used more widely, especially in reconstructive orthognathic surgery, due to the minimal damage it causes to tissues. With the long-term results, much healthier interpretations can be made.
摘要：
目的：在本研究中，我们的目的是比较不同截骨技术在实验性山羊颅骨模型中对Lefort1截骨的效率。
方法：本研究使用12只山羊头骨。头骨分为3组：（1）手动凿组，(2)Lindemannbur组,(3)压电截骨组。对每个颅骨进行双侧截骨术。通过三维计算机断层扫描和对粘膜撕裂和软组织的宏观观察来评估结果。
结果：手册中的骨间隙的平均长度，林德曼,压电组为4.8（±0.7），3.38(±1.49),1.39(±0.3)mm,分别为(P<0.05)。手册中粉碎性骨折的平均数,林德曼,压电组为5.5（±1.4），1.6(±0.3),和0.6(±0.5)，分别为(P<0.05)。在压电技术中，基于主观检查观察的粘膜撕裂和软组织损伤可以忽略不计。与其他2种技术相比，在手动凿骨法中观察到的软组织和粘膜损伤明显更多。
结论：我们预计压电，除了隆鼻之外，它已经开始用于新的应用领域，将继续被更广泛地使用，尤其是在重建正颌手术中，由于它对组织的损害很小。有了长期的结果，可以做出更健康的解释。
方法：本研究使用12只山羊头骨。头骨分为3组：（1）手动凿组，(2)Lindemannbur组,(3)压电截骨组。对每个颅骨进行双侧截骨术。通过三维计算机断层扫描和对粘膜撕裂和软组织的宏观观察来评估结果。
结果：手册中的骨间隙的平均长度，林德曼,压电组为4.8（±0.7），3.38(±1.49),1.39(±0.3)mm,分别为(P<0.05)。手册中粉碎性骨折的平均数,林德曼,压电组为5.5（±1.4），1.6(±0.3),和0.6(±0.5)，分别为(P<0.05)。在压电技术中，基于主观检查观察的粘膜撕裂和软组织损伤可以忽略不计。与其他2种技术相比，在手动凿骨法中观察到的软组织和粘膜损伤明显更多。
结论：我们预计压电，除了隆鼻之外，它已经开始用于新的应用领域，将继续被更广泛地使用，尤其是在重建正颌手术中，由于它对组织的损害很小。有了长期的结果，可以做出更健康的解释。
