title: A 5-year longitudinal study of survival rate and periodontal parameter changes at sites of dilacerated maxillary central incisors.
abstract: BACKGROUND
  Although dental dilaceration disinclusion is an accepted treatment modality, few studies have evaluated the prognosis for dilacerated maxillary incisors and changes in clinical periodontal parameters still need to be demonstrated. The objectives of this study were to evaluate the prognosis and changes in clinical attachment level (CAL), probing depth (PD), and soft tissue recession (REC) for disincluded dilacerated maxillary incisors.
  
  
  METHODS
  Ten impacted dilacerated teeth were scheduled for disinclusion. Five of them were disincluded with the apically repositioned flap technique and the other five with the closed eruption technique and brought into alignment with light orthodontic forces.
  
  
  RESULTS
  All the dilacerated teeth were disincluded as planned. CAL, PD, and REC were the same as natural teeth. Among the two surgical techniques, no statistically significant differences have been found.
  
  
  CONCLUSIONS
  The choice to disinclude dilacerated central maxillary incisors reached the goals planned. Periodontal parameters obtained in a short- and long-term follow-up allow to affirm that the disinclusion of dilacerated teeth has a good survival rate.
authors.affiliation: Department of Orthodontics, IRCCS Cà Granda - Ospedale Maggiore Policlinico, University of Milan, Via Commenda 10, 20100 Milano, Italy. giampietro.farronato@unimi.it.
authors.forename: Giampietro
authors.initials: G
authors.lastname: Farronato
authors.forename: Lucia
authors.initials: L
authors.lastname: Giannini
authors.forename: Guido
authors.initials: G
authors.lastname: Galbiati
authors.forename: Cinzia
authors.initials: C
authors.lastname: Maspero
mesh_terms: D003774:Dental Plaque Index; D005500:Follow-Up Studies; D005889:Gingival Recession / Q000473:pathology; D006801:Humans; D007180:Incisor / Q000002:abnormalities*; D008137:Longitudinal Studies; D008437:Maxilla / Q000473:pathology; D050793:Orthodontic Extrusion / Q000379:methods; D017622:Periodontal Attachment Loss / Q000473:pathology; D010514:Periodontal Pocket / Q000473:pathology; D010519:Periodontium / Q000473:pathology*; D011379:Prognosis; D012189:Retrospective Studies; D013524:Surgical Flaps / Q000601:surgery; D015996:Survival Rate; D014092:Tooth Root / Q000002:abnormalities*; D014095:Tooth, Impacted / Q000601:surgery*