Apicoectomy

An apicoectomy, also known as a root-end resection or periapical surgery, is an endodontic surgical procedure performed when conventional root canal therapy or retreatment fails to resolve a periapical infection or pathology. The procedure involves reflecting a mucoperiosteal flap to access the bone overlying the root apex, removing a small window of bone to expose the root tip, resecting the apical three millimeters of the root, and placing a retrograde filling material such as mineral trioxide aggregate to seal the root canal from the apical end. An apicoectomy is indicated when anatomical complexities such as severe root curvature, calcified canals, or the presence of posts and core buildups make nonsurgical retreatment impractical or impossible, or when a periapical lesion persists despite adequate prior endodontic treatment.

The surgical technique requires microsurgical instrumentation, high-magnification loupes or an operating microscope, and ultrasonic retropreparation tips that allow precise root-end preparation without excessive bone removal. Success rates for apicoectomy performed with contemporary microsurgical techniques exceed 90 percent, making it a predictable tooth-saving alternative to extraction and implant placement. Post-operative management typically includes antibiotics, analgesics, and a soft diet for several days. Patients are monitored radiographically at intervals to confirm healing of the periapical lesion, with complete bony fill expected within six to twelve months in successful cases. The procedure is most commonly performed on anterior teeth and premolars where surgical access is straightforward, though molar apicoectomies are performed by oral surgeons and endodontists in selected cases.

Billing for apicoectomy requires selection of the appropriate CDT code based on whether the tooth is an anterior, premolar, or molar, as each has a distinct code and fee schedule. Pre-authorization is strongly recommended because payers frequently require documentation demonstrating that prior endodontic treatment was performed, that the infection persists, and that retreatment is not a viable option before approving coverage for the surgical procedure. The clinical record should include pre-operative radiographs showing the periapical pathology, a narrative describing the rationale for surgical intervention, and post-operative radiographs confirming the completed resection and retrograde fill. Thorough documentation protects the practice against denials and supports the full reimbursement of this technically demanding procedure.