Data sources Sources were MEDLINE and the Cochrane Oral Health Group Trials Register. Reference lists from relevant articles, and selected journals dated up to April 2001, were also searched by hand.

Hung H-C, Douglass CW J Clin Periodontol 2002; 29: 975–986. This study examined scaling and root planing effects in relation to modified Widman flap surgery and 3 types of locally delivered ...