title: The success rate of narrow body implants used for supporting immediate provisional restorations:  a pilot feasibility study.
abstract: BACKGROUND
  Implants were first designed to be used in the reconstruction of edentulous mandibles. However, with the technological advancement, enormous changes were made to improve the implant design and surface characteristics leading to the wide use of implants in the replacement of missing teeth. During the transition from an edentulous span to a fixed prosthesis, narrow body implants (NBIs) have been proposed to enhance patient comfort and function. Therefore, this study was aimed at investigating the survival and success rates of NBIs used for supporting immediately nonfunctional loaded provisional fixed partial denture (PFPD).
  
  
  METHODS
  Either 2.2- or 2.4-mm-diameter dental implants were placed transmucosally into the edentulous ridges of 10 partially edentulous patients. PFPD of self-cured bis-acryl composite material were made using either a vacuform template chairside or a relined prefabricated PFPD. Occlusal adjustments were made to ensure that there was no functional loading on the provisional restorations before they were secured onto the transitional implants.
  
  
  RESULTS
  At 1 year, the implant success and survival rates were 38.7% and 93.5%, respectively, with a mean percentage of bone loss of 9.46% (0%-40%) and a mean bone loss of 1.19 mm (range: 0-3.5 mm).
  
  
  CONCLUSIONS
  With a favorable implant survival rate, the use of NBIs to support provisional restorations seemed to be a feasible treatment option. In addition, there is merit for research on the long-term use of NBIs-supported final prostheses.
authors.affiliation: Department of Periodontics and Oral Medicine, School of Dentistry, University of Michigan, Ann Arbor, MI 48109, USA. homlay@umich.edu
authors.forename: Hom-Lay
authors.initials: HL
authors.lastname: Wang
authors.forename: Kozue
authors.initials: K
authors.lastname: Okayasu
authors.forename: Jia-Hui
authors.initials: JH
authors.lastname: Fu
authors.forename: Howard A
authors.initials: HA
authors.lastname: Hamerink
authors.forename: Mary G
authors.initials: MG
authors.lastname: Layher
authors.forename: Ivan Elimar
authors.initials: IE
authors.lastname: Rudek
mesh_terms: D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging; D001732:Bite Force; D015519:Bone Density / Q000502:physiology; D015921:Dental Implants; D003774:Dental Plaque Index; D017267:Dental Prosthesis Design; D019094:Dental Prosthesis, Implant-Supported; D003779:Denture Design; D003830:Denture, Partial, Fixed; D003831:Denture, Partial, Immediate; D003833:Denture, Partial, Temporary; D005240:Feasibility Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007576:Jaw, Edentulous, Partially / Q000534:rehabilitation; D008297:Male; D008334:Mandible / Q000601:surgery; D008875:Middle Aged; D019558:Occlusal Adjustment; D016348:Osseointegration / Q000502:physiology; D010512:Periodontal Index; D010865:Pilot Projects; D016300:Radiography, Bitewing; D016019:Survival Analysis; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants