title: Time may be as important as the addition of a chlorhexidine chip to scaling and root planing for increasing attachment levels.
authors.affiliation: Dalhousie University, Faculty of Dentistry, Division of Periodontics, 5981 University Avenue, Halifax, NS B3H3J5 Canada. dmatthew@dal.ca
authors.forename: Debora
authors.initials: D
authors.lastname: Matthews