title: Relationship between apical and marginal healing in periradicular surgery.
abstract: OBJECTIVE
  The purpose of the present study was to evaluate the relationship between apical and marginal periodontal healing after periapical surgery.
  
  
  METHODS
  The investigation was conducted on 59 patients referred for periradicular surgery. A radiographic examination as well as assessments of periodontal attachment and pocket depth of teeth undergoing surgery and control teeth were performed at the time of surgery and 1 year after surgery. The radiographic periapical healing pattern was evaluated.
  
  
  RESULTS
  After an observation time of 1 year, 85% of the healing patterns were classified as successful or uncertain. Teeth within the surgical area showed a significant loss of clinical attachment during the observation period. The mean clinical attachment loss in teeth with an unsuccessful healing was 0.85 mm and differed significantly from successfully healed cases (mean, 0.15 mm).
  
  
  CONCLUSIONS
  A persisting endodontic infection may be regarded as a contributing risk factor for a progressing marginal attachment loss.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Stockholm Soder Hospital, Sweden.
authors.forename: L
authors.initials: L
authors.lastname: Jansson
authors.forename: P
authors.initials: P
authors.lastname: Sandstedt
authors.forename: A C
authors.initials: AC
authors.lastname: Låftman
authors.forename: A
authors.initials: A
authors.lastname: Skoglund
mesh_terms: D000328:Adult; D000368:Aged; D001047:Apicoectomy / Q000009:adverse effects*; D003788:Dental Pulp Diseases / Q000150:complications / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010485:Periapical Periodontitis / Q000209:etiology*; D017622:Periodontal Attachment Loss / Q000209:etiology*; D012184:Retrograde Obturation / Q000009:adverse effects*; D018709:Statistics, Nonparametric; D014945:Wound Healing / Q000502:physiology*