title: A 5-year prospective study on small diameter screw-shaped oral implants.
abstract: Alveloar ridges of limited dimensions could preclude the placement of dental implants of the regular dimension. Smaller diameter implants - narrow platform (NP) implants were commercially available to address this issue. The aim of the study was to determine the 5-year clinical performance of 3.3 mm diameter NP implants. Twenty-three machined screw-shaped NP implants were placed in nine patients (six males; three females) between 18 and 70 years of age. Clinical and radiographic examinations were performed annually for 5 years. Recognized implant success criteria was used. The criteria were based on the mean marginal alveolar bone loss, the placement of prosthesis of satisfactory appearance, and the absence of implant mobility, peri-implant radiolucency, pain, discomfort or infection. One implant failed at abutment connection. The remaining 22 implants were restored and functioned successfully according to the criteria. The mean marginal alveolar bone loss during the first year was 0.41 +/- 0.17 mm. The mean marginal alveolar bone loss between the second and fifth year was 0.03 +/- 0.06 mm. The success rate of NP implants according to a well-established set of criteria was 96%.
authors.affiliation: Faculty of Dentistry, University of Hong Kong, Hong Kong.
authors.forename: M B
authors.initials: MB
authors.lastname: Comfort
authors.forename: F C S
authors.initials: FC
authors.lastname: Chu
authors.forename: J
authors.initials: J
authors.lastname: Chai
authors.forename: P Y P
authors.initials: PY
authors.lastname: Wat
authors.forename: T W
authors.initials: TW
authors.lastname: Chow
mesh_terms: D000328:Adult; D000368:Aged; D000539:Alveolar Process / Q000473:pathology*; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D019232:Dental Restoration Failure; D003778:Dentures; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible; D008437:Maxilla; D008875:Middle Aged; D011446:Prospective Studies; D016388:Tooth Loss / Q000601:surgery*
chemical_list: D015921:Dental Implants