A review of the literature is presented with regards to the soft tissue-root surface interface. The basic biological aspects are discussed followed by reports on healing after periodontal surgery. The effect of citric acid, to enhance new attachment, is reviewed in detail. Articles reporting on clinical findings, ultrastructural observation (TEM and SEM), and light microscopic studies have been selected to present the reader with a logical overview of what has been reported in the literature.
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Daryabegi et al. (1980) studied this question.
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