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Removal of Horizontally Impacted Mandibular Third Molars With Large Root Bifurcations Using a Modified Tooth
Rui Liao1, Xiujing Jiang2, Renfei Wang3
1Associate Professor, Department of Oral Surgery, Hangzhou Stomatology Hospital, Savaid Medical School, University of Chinese Academy of Sciences, Hangzhou, China.
Summary
A modified tooth sectioning technique for impacted mandibular third molars (M3Ms) significantly reduced operation time and complications. This method offers a safer and more efficient approach for M3M extraction, improving patient satisfaction.
Area of Science:
- Oral and Maxillofacial Surgery
- Dental Implantology
- Surgical Techniques
Background:
- Horizontally impacted mandibular third molars (M3Ms) with large root bifurcation present surgical challenges.
- Conventional sectioning techniques can lead to prolonged operation times and increased complications.
Purpose of the Study:
- To introduce a modified tooth sectioning technique for extracting horizontally impacted M3Ms with large root bifurcation.
- To compare the efficacy and patient outcomes of the modified technique versus the conventional method.
Main Methods:
- A prospective study involving 300 patients with horizontally impacted M3Ms and large root bifurcation.
- Patients were divided into two groups: modified sectioning (between distal root and remainder) and conventional sectioning (at cementoenamel junction).
- Outcomes measured included operation duration, postoperative reactions, complications, and patient satisfaction.
Main Results:
- The modified method group (150 M3Ms) demonstrated significantly shorter operation durations (10.48 ± 3.78 min) compared to the control group (15.09 ± 4.24 min).
- The modified technique resulted in significantly fewer postoperative reactions and complications.
- Patients undergoing the modified procedure reported higher satisfaction with operation duration and healing.
Conclusions:
- The modified tooth sectioning technique effectively addresses bone and adjacent tooth resistance during M3M extraction.
- This approach simplifies the procedure, often requiring only one sectioning cut.
- The modified method offers a more straightforward, safe, and efficient surgical option for impacted mandibular third molars.

