title: Mucogingival interceptive surgery of buccally-erupted premolars in patients scheduled for orthodontic treatment. I. A 7-year longitudinal study.
abstract: BACKGROUND
  Mucogingival interceptive therapy in patients with buccally erupting teeth is performed to prevent the ectopic permanent tooth from developing periodontal lesions. The keratinized tissue entrapped between the erupting tooth and the deciduous tooth is retained to maintain a satisfactory width of the gingiva for the permanent tooth. The aim of the present study on buccally-erupted premolars scheduled for orthodontics was to evaluate the keratinized tissue width 3 months, 2 years, and 7 years subsequent to mucogingival interceptive therapy and orthodontic treatment.
  
  
  METHODS
  Twenty-nine patients participated. Three different surgical techniques were used according to specific indications. Eight patients were treated with double pedicle flaps (DPF), 10 patients with apically positioned flaps (APF), and 11 with free gingival grafts (FGG).
  
  
  RESULTS
  The amount of keratinized tissue on the treated (test) sites was not significantly less than on the control (untreated) sites showing normally erupting premolars at all observation periods. All 3 surgical procedures appeared to be effective in saving the keratinized tissue for the permanent tooth. Preoperative periodontal parameters such as gingival width, probing depth, and bleeding on probing significantly influenced the outcome 3 months after surgery (P <0.01).
  
  
  CONCLUSIONS
  Mucogingival interceptive surgery is an effective approach to conserve the keratinized buccal gingiva of ectopically erupting premolars.
authors.affiliation: School of Dentistry, University of Florence, Italy. gpinipr@tin.it
authors.forename: G
authors.initials: G
authors.lastname: Pini Prato
authors.forename: T
authors.initials: T
authors.lastname: Baccetti
authors.forename: C
authors.initials: C
authors.lastname: Magnani
authors.forename: G
authors.initials: G
authors.lastname: Agudio
authors.forename: P
authors.initials: P
authors.lastname: Cortellini
mesh_terms: D000293:Adolescent; D001641:Bicuspid / Q000503:physiopathology; D002648:Child; D005260:Female; D005881:Gingiva / Q000033:anatomy & histology* / Q000502:physiology / Q000601:surgery* / Q000637:transplantation; D005889:Gingival Recession / Q000209:etiology / Q000517:prevention & control*; D005893:Gingivoplasty / Q000379:methods*; D006801:Humans; D016014:Linear Models; D008137:Longitudinal Studies; D008297:Male; D008437:Maxilla; D013524:Surgical Flaps; D014079:Tooth Eruption, Ectopic / Q000150:complications / Q000601:surgery*; D014087:Tooth Movement Techniques; D014094:Tooth, Deciduous / Q000503:physiopathology