Abstract
Background: Chronic periodontitis is an infectious disease resulting in inflammation within the supporting tissues of the teeth, progressive attachment loss and bone loss. Conventional treatment is the first-line treatment in this case, however, in moderate to advanced periodontitis cases, conventional treatment alone is not sufficient to regenerate the periodontal tissue, so a surgical therapy is required.
 Objective: To explain the procedures and results of surgical periodontal treatment with bone xenograft and the barrier membrane of a patient with chronic periodontitis.
 Method: A 33-year-old man presented to the Department of Periodontia RGSM Unhas with the primary complaint of teeth mobility of the lower left jaw, the patient had also been scaled one week prior. On intraoral examination, tooth 35 had mobile º1, recession 3 mm and pocket 6 mm, and tooth 36 had mobile º2, recession 2 mm and pocket 7 mm. Treatment was performed using flap operation with bone graft and membrane barrier applications.
 Results: Control was performed six months after the treatment and the results showed normal gingival tissue with good tissue attachment, pocket reduction.
 Conclusion: Treatment of chronic periodontitis using bone xenograft and membrane barrier is one of the surgical therapies that can contribute to periodontal regeneration.
 Keywords: barrier membrane, bone graft, flap operation
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