Abstract
Objectives
This prospective study introduced a digitally designed sectioning guide and evaluated its feasibility for the extraction of horizontally impacted lower third molars.
Materials and 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.
Clinical relevance
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.
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Funding
The research was supported by New Clinical Techniques and Therapies of Peking University School and Hospital of Stomatology (PKUSSNCT-20A08).
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Wei Qi and **g Qian proposed the template design; Wei Qi, Yijiao Zhao, and Yong Wang accomplished the final template design. Wei Qi, Wei Zhou, Jiannan Li, and Jie Pan were involved in patient follow-up and clinical data collection. Wei Qi, Bochun Mao, and Aonan Wen processed the CBCT data and produced the digital templates. Wei Qi and **g Qian analyzed the data. Wei Qi wrote the manuscript. Jie Pan and Yong Wang revised the paper.
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This prospective study was performed in accordance with the Declaration of Helsinki after approval by the Ethical Review Board of Peking University School and Hospital. Informed consent was obtained from all participants.
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Qi, W., Qian, J., Zhou, W. et al. 3D-printed titanium surgical guides for extraction of horizontally impacted lower third molars. Clin Oral Invest 27, 1499–1507 (2023). https://doi.org/10.1007/s00784-022-04769-3
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DOI: https://doi.org/10.1007/s00784-022-04769-3