ABSTRACT
Objective: The aim of this study is to assess the surface roughness of the implant-retained
mandibular bar overdenture (BOD) and the implant-retained mandibular ball joint overdenture
(BJOD) in jaw and its relation with the adhesion of molds and yeasts and mesophyll
aerobe, in time 30 and 180 days in mouth. Materials and Methods: Five-systems titanium bar CARES® and synOcta® Straumann® Dental Implant System, Holding AG Inc., Basel, Switzerland (BOD), and five-systems
joint ball Klockner® Implant System; Soadco Inc., Escaldes-Engordany; Andorra (BJOD), were used in two
parallel groups of five participants, in an essay to simple blind person. To 30 and
180 days, the overdentures were withdrawn and evaluated the Ra: ųm. SJ-301® Mitutoyo Corporation Inc., Kanagawa, Japan, and the adhesion of microorganisms (colony-forming
unit/ml). Results: The results were as follows: the Ra: Um (30th and 180th): BOD, 0.965–1.351; BJOD, 1.325–2.384. Adhesion: Molds and yeasts, BOD, 2.6 × 102 and 4.6 × 103; BJOD, 3.0 × 102 and 5.3 × 104. Adhesion: Mesophyll aerobe, BOD, 3.8 × 106 and 5.8 × 106; BJOD, 4.3 × 106 and 7.1 × 107. Conclusions: At 30 days (P = 0.489), there were no differences in BOD and BJOD for adhesion of molds and yeasts
and mesophyll aerobe between both overdentures. At 180 days (P = 0.723), there were differences in the adhesion of mold and yeast and mesophyll
aerobe, being greater in BJOD.
Key words:
Bacterial adhesion - clinical studies/trials - implantology - overdenture - surface
properties