title: Radiological and clinical follow-up of machined- and anodized-surface implants after mean functional loading for 33 months.
abstract: The purpose of this retrospective study was to compare peri-implant bone loss and mucosal conditions around machined-surface (MS) and anodized-surface (AS) interforaminal implants in the mandible at least 30 months after placement. Fifty patients, each treated with four interforaminal screw-type implants consecutively, were included. Thirty-one patients (62%) with a total number of 124 implants (64 MS and 60 AS implants, both Brånemark type MKIII) were available for follow-up. Rotational panoramic radiographs were used for evaluating marginal bone loss. Clinically, marginal plaque index (mPI), bleeding on probing (BOP) and pocket probing depth (PPD) were evaluated. AS implants showed significantly less marginal bone loss than MS implants (-1.17+/-0.13 vs. -1.42+/-0.13 mm; P=0.03). Marginal bone loss around distal implants was less pronounced at AS implants (-1.05+/-0.14 mm) when compared with MS implants (-1.46+/-0.14 mm; P=0.05). Within the smoking group, there was less peri-implant bone loss around AS implants than around MS implants (-1.08+/-0.27 vs. -1.83+/-0.2; P=0.04). No differences between MS and AS implants were found with respect to mPI (57% vs. 67%), BOP (21% vs. 17%) and mean PPD (2.59+/-0.29 vs. 2.56+/-0.28 mm). Overall, both types of implants, in combination with bar-supported overdentures, can produce excellent long-term results in the interforaminal edentulous mandible with less peri-implant bone loss around rough implant surfaces, which had beneficial effects at distal implants and in smokers.
authors.affiliation: Department of Oral Surgery, Bernhard Gottlieb Dental School, Medical University of Vienna, Vienna, Austria. georg.watzak@meduniwien.ac.at
authors.forename: Georg
authors.initials: G
authors.lastname: Watzak
authors.forename: Werner
authors.initials: W
authors.lastname: Zechner
authors.forename: Dieter
authors.initials: D
authors.lastname: Busenlechner
authors.forename: Christof
authors.initials: C
authors.lastname: Arnhart
authors.forename: Reinhard
authors.initials: R
authors.lastname: Gruber
authors.forename: Georg
authors.initials: G
authors.lastname: Watzek
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging / Q000209:etiology*; D003758:Dental Implantation, Endosseous / Q000009:adverse effects / Q000379:methods*; D015921:Dental Implants / Q000009:adverse effects*; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D008336:Mandibular Diseases / Q000000981:diagnostic imaging / Q000209:etiology; D008439:Maxillary Diseases / Q000000981:diagnostic imaging / Q000209:etiology; D008875:Middle Aged; D011859:Radiography; D012907:Smoking / Q000009:adverse effects; D013499:Surface Properties; D016474:Weight-Bearing
chemical_list: D015921:Dental Implants