(PR124) Mandibular First Molar Periapical Surgeries: A Retrospective Clinic Investigation

Objective(s): To investigate the cases of mandibular first molar periapical surgeries performed at Nova Southeastern University (NSU) Postgraduate Endodontics Clinic and identify the most prevalent factors.

Methods: This research was accepted by the NSU IRB. Data was accessed via axiUm software applying the code: D3425 – Apicoectomy – molar (1st root). Only mandibular first molar surgeries with a minimum of six-month recalls were included. Preoperative, intraoperative, and postoperative factors were identified. The healing outcomes based on preoperative and postoperative periapical radiographs were assessed. A preliminary statistical and descriptive analysis was completed on the data collected (pending final statistician review).

Results: A total of 52 charts were included with surgeries performed from 2008 until 2024. Preliminary results show 50% were male and 50% female. Tooth #30 represented 55.76% and #19, 44.23% of the cases. The most prevalent systemic health conditions were hypertension (32%), HIV (21.1%), hypothyroidism (9.6%), and diabetes (1.9%). The most common type of root-end filling material utilized were BC Putty (65.3%), followed by MTA (13.4%) and Super EBA (11.5%). The mesial root only was operated 61.5% of the cases, distal root only 1.9% and both roots 34.6% of the cases. Follow-up with periapical radiographs ranged from 6 months to 144 months. Complete healing was noted in 32.6% of the cases.

Conclusion: The most identified factors in mandibular first molar periapical surgeries performed by endodontic postgraduate include tooth #30, mesial root, hypertension, BC Putty material. Maximum follow-up of 144 months, and complete healing in 32.6% of cases.