Premium
Primary Stability of a Hybrid Implant Compared with Tapered and Cylindrical Implants in an E x Vivo Model
Author(s) -
Toyoshima Takeshi,
Tanaka Hideaki,
Ayukawa Yasunori,
Howashi Miori,
Masuzaki Tomohiro,
Kiyosue Takahiro,
Koyano Kiyoshi,
Nakamura Seiji
Publication year - 2015
Publication title -
clinical implant dentistry and related research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.338
H-Index - 85
eISSN - 1708-8208
pISSN - 1523-0899
DOI - 10.1111/cid.12205
Subject(s) - implant stability quotient , cancellous bone , implant , resonance frequency analysis , materials science , dentistry , in vivo , iliac crest , biomedical engineering , artificial bone , ex vivo , initial stability , medicine , osseointegration , surgery , biology , microbiology and biotechnology
Background Hybrid implants are thought to offer good stability and bone‐implant contact. Purpose This study sought to evaluate the primary stability of a hybrid implant compared with tapered and cylindrical implants in an ex vivo model and compare undersized drilling with standard drilling in attaining primary stability. Materials and Methods Hybrid ( St raumann® B one L evel; BL ), tapered ( S traumann® T apered E ffect; TE ), and cylindrical ( S traumann® S tandard P lus; SP ) implants were inserted into 15 mm–thick porcine iliac crest blocks using standard (corticocancellous or cancellous bone) or undersized (cancellous bone only) drilling ( n = 7). Stability was evaluated using maximum insertion torque ( MIT ), implant stability quotient ( ISQ ), and push‐out tests. Results The mean MIT for BL and TE was significantly higher than that for SP ( p < 0.05). With standard drilling in corticocancellous bone, the mean ISQ for TE was significantly higher than that for SP ( p < .05). The mean MIT , ISQ , and push‐out test scores for BL , TE , and SP with standard drilling in corticocancellous bone were significantly higher than those with undersized or standard drilling in cancellous bone ( p < .05). Conclusions In this ex vivo model, the hybrid implant demonstrated promising primary stability compared with the cylindrical implant. The improved stability of the hybrid implant was especially evident in cancellous bone. The influence of the cortical layer should be recognized when selecting implants for primary stability.