Wound Healing After Gingivectomy

Chronic inflammatory gingival enlargement is a condition characterized by an increase in gingival volume due to inflammatory changes associated with dental plaque. Non-surgical periodontal therapy is the primary treatment approach; however, in some cases, surgical intervention such as gingivectomy or gingivoplasty is required to eliminate excess gingival tissue and restore gingival architecture. Gingivectomy/gingivoplasty creates a surgical wound surface that is exposed to the oral environment and microbial flora. Therefore, the healing process may be influenced by several biological and environmental factors. Adjunctive therapeutic approaches that enhance wound healing and reduce microbial contamination may improve clinical outcomes following periodontal surgery. Medical ozone therapy, consisting of a controlled mixture of oxygen (O₂) and ozone (O₃), has antimicrobial, anti-inflammatory, and immunomodulatory properties. It has also been suggested to stimulate fibroblast activity, enhance tissue oxygenation, and promote growth factor release, potentially accelerating tissue regeneration and wound healing. The present study is designed as a single-center, randomized, split-mouth clinical trial with blinded outcome assessment to investigate the effect of adjunctive gaseous ozone therapy on wound healing following gingivectomy/gingivoplasty in patients with chronic inflammatory gingival enlargement. A total of 24 systemically healthy individuals aged between 18 and 40 years diagnosed with chronic inflammatory gingival enlargement will be included. Following non-surgical periodontal therapy and oral hygiene instruction, gingivectomy/gingivoplasty will be performed under local anesthesia. Surgical sites will be randomly assigned using a coin-toss method in a split-mouth design to either the test group (gingivectomy/gingivoplasty with adjunctive gaseous ozone application) or the control group (gingivectomy/gingivoplasty alone). In the test group, gaseous ozone will be applied to the surgical wound area using a dedicated probe for one minute per tooth according to the manufacturer's instructions. Ozone application will be repeated at 24 hours and on post-operative Day 3. Clinical periodontal parameters (Plaque Index \[PI\], Gingival Index \[GI\], Bleeding on Probing \[BOP\], Probing Pocket Depth \[PPD\], and Clinical Attachment Level \[CAL\]) will be assessed at baseline and on post-operative Day 21. Exfoliative cytology samples will be obtained from the wound area at baseline and on post-operative Days 1, 3, 7, and 21. Histopathological evaluation will be performed to determine the Superficial Cell Index (SCI) and Keratinization Index (KI), which are indicators of epithelial maturation and wound healing. The findings of this study are expected to provide clinical and histopathological evidence regarding the potential benefits of adjunctive ozone therapy in periodontal wound healing and may support its use as an adjunctive treatment in periodontal surgical procedures.