What is the primary purpose of an internal bevel incision?

The internal bevel incision is primarily designed to conserve the uninvolved outer gingival surface. This surgical technique is utilized in periodontal surgeries to ensure that the healthy gingival tissues remain intact while allowing access to the underlying periodontal structures. By making the incision bevel inward, the external margin of the gingiva is preserved, promoting better healing and maintaining a more aesthetic appearance.

This conservation of healthy tissue is crucial in maintaining the integrity of the gingival architecture and minimizing the postoperative recession that can occur with other incision types. By preserving the outer gingival surface, the internal bevel incision supports optimal healing conditions and increases the likelihood of a successful surgical outcome, as it allows for the proper management of periodontal disease while protecting the health of adjacent tissues.