Simonas Dvylys, Gintaras Janužis
Relevance of the problem and aim of the work. Primary stability at placement of a dental implant is one of the most important factors for a successful osseointegration. Therefore, the need of a reliable implant stability assessment device is required. The aim of this in vitro study was to evaluate reliability of the “Osstell” and “Periotest” devices in the assessment of implant stability and to perform a method comparison. Material and the methods. The simulators of dental alveolus were prepared into bovine rib segments of different anatomical origins and densities: after removing superficial cortical bone layer, metal teeth models were inserted into spongious bone ant then removed. 40 Megagen AnyRidge 6,0 mm diameter (body diameter 4,8 mm), 10 mm lenght implants (Megagen, Gyeongbuk, South Korea) were inserted into the simulators of the alveolus to imitate immediate implantation procedure in different bone type groups. The measurements of implant stability were made by “Osstell” (Integration Diagnostics AB, Savedalen, Sweden) and “Periotest” (Gulden Messtechnik, Bensheim, Germany) devices. The measurements were made in mesiodistal and buccolingual directions. Statistical data analysis was made by SPSS 23 version. Statistical significance level was adjusted to P < 0.05. Results. The mean “Periotest” and “Osstell” measurements showed a significant difference between the hard and soft bone groups, P < 0,05. Conclusions. “Osstell” system proved to be more reliable compared to “Periotest” system in measuring dental implant stability in hard and in soft interfaces.
Keyword(s): osseointegration; Implant Stability; “Periotest”; “Osstell”; resonance frequency analysis.
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