title: A prospective split-mouth comparative study of two screw-shaped self-tapping pure titanium implant systems.
abstract: Clinical data indicate different medium and long-term outcomes of endosseous implants for different implant configurations and in particular implant surfaces. The present study compares 2 very similar implant systems but with different surface characteristics in a split-mouth-randomized design. The Astra-Tech (A) system (Astra-Tech AB, Mölndal, Sweden) consisted of selftapping TiO2-blasted screw-shaped implants made of commercially pure titanium, and the Brånemark (B) System (Nobel Biocare, Gothenburg, Sweden) comprised selftapping Mark II implants with machined surface irregularities. Throughout the 2-years' observation period, no significant differences could be found concerning probing depths, presence of plaque or change in marginal bone level. A statistically significant difference in location of the marginal bone level in relation to the shoulder of the implant was found in favor of the A system both at baseline and after 2 years. Cumulative success rates of 100% (A) and 97.7% (B) were not statistically different. From a prosthetic point of view, more soldering points were needed for A compared to B to reach clinical acceptable fit. More years of observation are needed to compare the fate of the soft and hard tissues surrounding two different implant surfaces.
authors.affiliation: Department of Periodontology, Faculty of Medicine, Catholic University of Leuven.
authors.forename: D
authors.initials: D
authors.lastname: van Steenberghe
authors.forename: G
authors.initials: G
authors.lastname: De Mars
authors.forename: M
authors.initials: M
authors.lastname: Quirynen
authors.forename: R
authors.initials: R
authors.lastname: Jacobs
authors.forename: I
authors.initials: I
authors.lastname: Naert
mesh_terms: D000328:Adult; D000368:Aged; D016301:Alveolar Bone Loss / Q000209:etiology; D003758:Dental Implantation, Endosseous; D015921:Dental Implants / Q000009:adverse effects; D003775:Dental Polishing / Q000379:methods; D017267:Dental Prosthesis Design; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D018709:Statistics, Nonparametric; D013499:Surface Properties; D014025:Titanium; D016896:Treatment Outcome
chemical_list: D015921:Dental Implants; C009495:titanium dioxide; D014025:Titanium