Rotary Instrument-Induced Soft Palatal Laceration During Dental Restorative Treatment: A Case Report.

Iatrogenic soft tissue injuries are recognized complications of dental procedures, most commonly affecting the tongue, buccal mucosa, and gingiva. However, trauma involving posterior palatal structures remains rarely documented. This case report describes a deep soft palatal laceration sustained during posterior restorative dental treatment following accidental contact with a high-speed rotary instrument. The injury resulted in mucosal and muscular disruption requiring surgical repair, which was subsequently complicated by early suture dehiscence due to the high-mobility nature of the soft palate. Healing progressed by secondary intention, ultimately achieving complete mucosal re-epithelialization with residual fibrotic scarring but no functional impairment. This case highlights the vulnerability of posterior palatal tissues within confined operative fields and underscores the importance of meticulous soft tissue protection, operative control, and postoperative monitoring. Increased recognition of such complications may inform preventive strategies and guide future research on rotary instrument-related soft tissue injuries in restorative dentistry.