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Influence of the implant diameter and bone quality on the primary stability of porous tantalum trabecular metal dental implants: an in vitro biomechanical study
Author(s) -
Romanos Georgios E.,
DelgadoRuiz Rafael Arcesio,
Sacks Danielle,
CalvoGuirado Josè Luis
Publication year - 2018
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/clr.12792
Subject(s) - resonance frequency analysis , materials science , implant , initial stability , soft tissue , dentistry , biomedical engineering , artificial bone , osseointegration , medicine , composite material , surgery
Objectives The aim of this study was to evaluate the primary, initial stability of Porous Tantalum Trabecular Metal ™ implants ( TM ) compared with Tapered Screw Vent ® implants ( TSV ) with different diameters, inserted in two bone densities. Methods A total of 160 implants (80 TM and 80 TSV ) with narrow (3.7 mm) and conventional (4.1 mm) diameters and the same length (10 mm) were placed in artificial bone blocks representing bone qualities II and IV . The implant stability was evaluated by insertion torque ( IT ) and Resonance Frequency Analysis. Statistical analysis was performed with non‐parametric Kruskal–Wallis test with Dunn post‐test for the differences between groups. Results The results showed higher ISQ values in dense bone compared with soft bone for all the groups ( P < 0.05). Conventional‐diameter implants ( TSV and TM ) showed higher ISQ and IT values compared with narrow implants ( TSV and TM ) in dense and soft bone ( P < 0.05). Tapered TSV implants showed higher stability in soft bone compared with TM implants ( P < 0.05). In dense bone, differences were not observed between narrow TSV 3.7 mm and TM 3.7 mm implants ( P > 0.05). Conclusions Within the limitations of this study, it can be concluded: In dense bone blocks, the wider diameter implants are more stable than narrow implants. In soft bone blocks, the tapered TSV implants are more stable than TM implants.