Surgical interventions for regenerative therapy of deep infraosseous periodontal pockets in the aesthetic zone of the upper jaw are associated with a risk of papilla height loss, the appearance of black triangles between teeth, long clinical crowns, and aesthetic failure post-surgically. This is perceived as an unacceptable result. For this purpose, papilla preservation flaps have been used in practice, with different modifications developed over the years. The aim of the article is to summarize the available literature data on their classification over the years, which would facilitate clinicians in choosing a certain technique in a specific clinical case.
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