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RCT comparing minimally with moderately rough implants. Part 2: microbial observations
Author(s) -
Quirynen M.,
Assche N.
Publication year - 2012
Publication title -
clinical oral implants research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.407
H-Index - 161
eISSN - 1600-0501
pISSN - 0905-7161
DOI - 10.1111/j.1600-0501.2011.02255.x
Subject(s) - dentistry , osseointegration , implant , maxilla , biofilm , medicine , randomized controlled trial , orthodontics , biology , surgery , bacteria , genetics
Background Most current implants have a moderately rough surface (compared with older minimally rough “turned” implants) to facilitate osseointegration. This randomized controlled trial ( RCT ), with split‐mouth design, examined whether this increased surface roughness influenced the initial subgingival plaque formation. Material and methods Ten fully edentulous and eight partially edentulous patients, all with a history of severe periodontitis, received 4–6 implants (mandible or maxilla). Per jaw, both minimally (turned) and moderately rough ( TiUnite ) implants ( MKIII ; N obel B iocare) were alternated. Also, the healing and final abutments had similar surface characteristics. Subgingival biofilm formation was followed up for 1 year, and samples were analyzed by culture technique, qPCR and checkerboard Results Over the entire period, no statistically significant differences could be detected in subgingival microbiota between the minimally and moderately rough surfaces. In partially edentulous patients, the biofilm matured to a higher concentration of pathogens when compared with fully edentulous patients. The subgingival implant composition and concentration in partially edentulous patients were comparable to the subgingival microbiota along teeth. Conclusion The roughness of the more modern implants did not influence the biofilm formation during the first year of implant loading.