Abstract：
OBJECTIVE: This prospective study introduced a digitally designed sectioning guide and evaluated its feasibility for the extraction of horizontally impacted lower third molars.
METHODS: This study included 38 horizontally impacted lower third molars, randomly divided into experimental and control groups. The teeth were extracted using a 3D-printed titanium surgical guide in the experimental group; free-hand extractions were performed in the control group. The surgical duration, tooth sectioning duration, cortical bone perforation, and postoperative complications, including pain, swelling, trismus, dry socket, infection, and hemorrhage, were evaluated.
RESULTS: Although not statistically significant, guided surgery tended to reduce the number of tooth sectioning steps compared to free-hand extractions. There were no cases of cortical bone perforation in the experimental group. Although the surgical duration was greater in the experimental group (p < 0.05), there were no differences in postoperative pain, swelling, and trismus. There were no cases of postoperative infection and hemorrhage in either group.
CONCLUSIONS: 3D-printed titanium surgical guides had superior accuracy and safety compared to free-hand surgery. Further studies with larger sample sizes are required to verify these findings.
CONCLUSIONS: The template improved the safety of tooth sectioning during impacted lower third molar surgery and resulted in a more predictable extraction. The narrow sectioning groove could fit comfortably with hypertrophic soft tissues in the posterior mandible.
METHODS: This study included 38 horizontally impacted lower third molars, randomly divided into experimental and control groups. The teeth were extracted using a 3D-printed titanium surgical guide in the experimental group; free-hand extractions were performed in the control group. The surgical duration, tooth sectioning duration, cortical bone perforation, and postoperative complications, including pain, swelling, trismus, dry socket, infection, and hemorrhage, were evaluated.
RESULTS: Although not statistically significant, guided surgery tended to reduce the number of tooth sectioning steps compared to free-hand extractions. There were no cases of cortical bone perforation in the experimental group. Although the surgical duration was greater in the experimental group (p < 0.05), there were no differences in postoperative pain, swelling, and trismus. There were no cases of postoperative infection and hemorrhage in either group.
CONCLUSIONS: 3D-printed titanium surgical guides had superior accuracy and safety compared to free-hand surgery. Further studies with larger sample sizes are required to verify these findings.
CONCLUSIONS: The template improved the safety of tooth sectioning during impacted lower third molar surgery and resulted in a more predictable extraction. The narrow sectioning groove could fit comfortably with hypertrophic soft tissues in the posterior mandible.
摘要：
目的：这项前瞻性研究引入了数字化设计的切片指南，并评估了其用于水平阻生下第三磨牙拔除的可行性。
方法：本研究包括38颗水平撞击下第三磨牙，随机分为实验组和对照组。实验组使用3D打印的钛手术指南拔除牙齿；对照组进行徒手拔除。手术持续时间,牙齿切片持续时间,皮质骨穿孔,和术后并发症，包括疼痛,肿胀,刺耳,干燥插座，感染,出血，进行了评估。
结果：虽然没有统计学意义，与徒手拔牙相比，引导手术倾向于减少牙齿切牙步骤的数量。实验组无皮质骨穿孔病例。尽管实验组的手术时间更长（p<0.05），术后疼痛没有差异，肿胀,和刺耳.两组均无术后感染和出血病例。
结论：与徒手手术相比，3D打印的钛手术指南具有更高的准确性和安全性。需要更大样本量的进一步研究来验证这些发现。
结论：模板提高了下第三磨牙阻生手术中切牙的安全性，并导致更可预测的拔牙。狭窄的切槽可以与下颌骨后部的肥厚软组织舒适地配合。
方法：本研究包括38颗水平撞击下第三磨牙，随机分为实验组和对照组。实验组使用3D打印的钛手术指南拔除牙齿；对照组进行徒手拔除。手术持续时间,牙齿切片持续时间,皮质骨穿孔,和术后并发症，包括疼痛,肿胀,刺耳,干燥插座，感染,出血，进行了评估。
结果：虽然没有统计学意义，与徒手拔牙相比，引导手术倾向于减少牙齿切牙步骤的数量。实验组无皮质骨穿孔病例。尽管实验组的手术时间更长（p<0.05），术后疼痛没有差异，肿胀,和刺耳.两组均无术后感染和出血病例。
结论：与徒手手术相比，3D打印的钛手术指南具有更高的准确性和安全性。需要更大样本量的进一步研究来验证这些发现。
结论：模板提高了下第三磨牙阻生手术中切牙的安全性，并导致更可预测的拔牙。狭窄的切槽可以与下颌骨后部的肥厚软组织舒适地配合。
