title: Retrospective multicenter analysis of immediate provisionalization using one-piece narrow-diameter (3.0-mm) implants.
abstract: OBJECTIVE
  The aim of this retrospective analysis was to report on the clinical outcome of immediate provisionalization using one-piece narrow-diameter implants.
  
  
  METHODS
  The dental records of patients who received narrow implants were reviewed. Narrow-diameter (3.0-mm) one-piece implants were used to support restorations of missing maxillary lateral incisors and mandibular incisors. All implants were placed in a one-stage procedure according to the protocol recommended by the manufacturer, with immediate placement of provisional restorations. Following an average healing period of 3 months in the mandible and 5 months in the maxilla, the definitive prostheses were fabricated. The survival rate of the implants was analyzed, and radiographic evaluation was performed. RESULTS. Thirty-six patients (20 men and 16 women), aged from 42 to 72 years (average age of 53 years), were treated with 62 one-piece narrow implants. A success rate of 100% was observed over a period up to 33 months (mean, 23 ± 4.3 months). Among these, 8 implants were placed in maxillary lateral incisor positions and 54 implants were placed in mandibular incisor areas. Forty-four implants supported fixed partial prostheses, and 18 implants supported single crowns. The majority of the implants were 15 mm in length. Mean marginal bone loss at the 12-month follow-up visit was 0.53 ± 0.37 mm (range, 0 to 1.4 mm).
  
  
  CONCLUSIONS
  The results obtained in this retrospective analysis suggest that the one-piece narrow-diameter implant can predictably restore missing maxillary lateral incisors and mandibular incisor with narrow interdental spaces and labiolingual widths.
authors.affiliation: Department of Dentistry, Catholic University Hospital of Daegu, Daegu, Republic of Korea. dssohn@cu.ac.kr
authors.forename: Dong-Seok
authors.initials: DS
authors.lastname: Sohn
authors.forename: Min-Su
authors.initials: MS
authors.lastname: Bae
authors.forename: Jeong-Uk
authors.initials: JU
authors.lastname: Heo
authors.forename: Jun-Sub
authors.initials: JS
authors.lastname: Park
authors.forename: Sun-Hae
authors.initials: SH
authors.lastname: Yea
authors.forename: Georgios E
authors.initials: GE
authors.lastname: Romanos
mesh_terms: D000328:Adult; D000368:Aged; D016301:Alveolar Bone Loss / Q000209:etiology; D003442:Crowns; D019250:Dental Implants, Single-Tooth; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D003794:Dental Restoration, Temporary; D003830:Denture, Partial, Fixed; D003833:Denture, Partial, Temporary; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D057893:Immediate Dental Implant Loading / Q000379:methods*; D007180:Incisor; D008297:Male; D008334:Mandible / Q000601:surgery; D008437:Maxilla / Q000601:surgery; D008875:Middle Aged; D012189:Retrospective Studies; D016019:Survival Analysis; D016896:Treatment Outcome; D014945:Wound Healing / Q000502:physiology