Over the past three decades great strides have been made in the field of periodontal regeneration. Reviews of the literature identify many surgical techniques and materials that have been used successfully to obtain new clinical and histological attachment. Although to date the goal of complete, predictable regeneration has not been attained, the literature has clearly demonstrated the clinical feasibility and histological possibility of periodontal regeneration with many of the procedures. But now the question arises: are those true?