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<p>This study aims to compare the initial stability of three types of implants i.e. Neodent Titamax CM EX (EX), Straumann Bone Level (STRM) and Nobel ACTIVE (ACTIVE) using high (HD)- and low (LD)-density porcine bone cylinders through resonance frequency (RFA) and micro-computed tomography (micro-CT) analyses. Standardized HD bone cylinders were obtained from the femoral head, while LD bone cylinders were from the mandibular condyle. Before the experiments, the bone cylinders were certified by three-dimensional imaging analysis to ensure uniformity and intra-group differentiation between specimens. The implants were installed as recommended, and RFA and micro-CT measurements were performed to evaluate implant stability and bone changes. The RFA analysis results of both HD and LD bone showed ISQ (Implant Stability Quotient) values higher than 60 and an ISQ trend of EX &gt; STRM &gt; ACTIVE (p &lt; 0.05). Intra-group comparison of EX and STRM, showed ISQ levels LD &gt; HD (p &lt; 0.05), while for ACTIVE, LD = HD (p &gt; 0.05). Micro-CT parameters showed a pattern of bone compression in areas of direct contact with the implant threads in EX and STRM for HD bone. Bone compression appeared to occur at a distance of up to 0.5&#xa0;mm from the surface of the implants, especially when STRM was implanted into either HD or LD bone. The macrostructure of the implant influences the stability and degree of bone compression around its surface but at a limited distance. Therefore, the dental implant design customization as seen in different manufacturers may be relevant to contribute to the primary stability.</p>

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Primary stability and bone deformation induced by tapered implants in different bone densities: a microtomography and resonance frequency analysis

  • 期刊论文

  • 发表日期：

    2025年4月24日

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  • P. Faria,
  • A. Vieta,
  • F. A. Oliveira,
  • V. F. Carvalho,
  • S. L. S. Souza,
  • Mario Taba

摘要

This study aims to compare the initial stability of three types of implants i.e. Neodent Titamax CM EX (EX), Straumann Bone Level (STRM) and Nobel ACTIVE (ACTIVE) using high (HD)- and low (LD)-density porcine bone cylinders through resonance frequency (RFA) and micro-computed tomography (micro-CT) analyses. Standardized HD bone cylinders were obtained from the femoral head, while LD bone cylinders were from the mandibular condyle. Before the experiments, the bone cylinders were certified by three-dimensional imaging analysis to ensure uniformity and intra-group differentiation between specimens. The implants were installed as recommended, and RFA and micro-CT measurements were performed to evaluate implant stability and bone changes. The RFA analysis results of both HD and LD bone showed ISQ (Implant Stability Quotient) values higher than 60 and an ISQ trend of EX > STRM > ACTIVE (p < 0.05). Intra-group comparison of EX and STRM, showed ISQ levels LD > HD (p < 0.05), while for ACTIVE, LD = HD (p > 0.05). Micro-CT parameters showed a pattern of bone compression in areas of direct contact with the implant threads in EX and STRM for HD bone. Bone compression appeared to occur at a distance of up to 0.5 mm from the surface of the implants, especially when STRM was implanted into either HD or LD bone. The macrostructure of the implant influences the stability and degree of bone compression around its surface but at a limited distance. Therefore, the dental implant design customization as seen in different manufacturers may be relevant to contribute to the primary stability.