Histological Investigation on Chronological Changes in Nerve Fibers and Bone Tissue around Oral Implants under Functional Loading

Wada, Shin

doi:10.2504/kds.54.551

Cited by 1 publication

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“…However, many of these studies investigated the implant-bone interface by using twodimensional observations. [7][8][9] Three-dimensional observation is a better method for clarifying loadinduced changes in the intra-bone structure; however, few such studies have been carried out. 10,11 Understanding the structural changes in the peri-implant bone in response to contact with fixtures is essential for establishing the reliability of implants.…”

Section: Introductionmentioning

confidence: 99%

Influence of Mechanical Loading on Resonance Frequency Analysis and Trabecular Structure of Peri-implant Bone

Imoto¹,

Yamada

Shimamura

et al. 2007

Prosthodont Res. Pract.

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Resonance frequency has been measured in order to evaluate the rigidity in peri-implant tissue.We found that although the trabecular structure of the peri-implant bone changed in response to functional loading, no marked change was noted in the implant stability quotient (ISQ) value. AbstractPurpose: The objective of this study was to clarify the effect of mechanical loading on the trabecular structure of peri-implant bone and determine its correlation with the implant stability quotient (ISQ) value.Methods: This study used 3 immunologically mature male dogs. Three months after bilateral extraction of the mandibular premolars of the dogs, 4 implants were placed in these sites for each dog. After 3 months to allow healing of the implant sites, superstructures were prepared on the right side (loaded side). The implants on the left side were covered with mucosa (non-loaded side). The ISQ values of all implants were measured 3 months after placing the superstructures; subsequently, the animals were sacrificed. After the mandible was excised and fixed, micro-CT images were acquired and three-dimensional analysis, performed. Results:The means and S.D. of the ISQ value for the 12 implants were 69.6±6.2 and 62.9±13.8 for the loaded and non-loaded sides, respectively. No significant difference was noted between the 2 sides. Mean and S.D. of bone volume fraction (BV/TV) were 13.0±6.6 and 9.3±3.8; trabecular thickness (Tb.Th), 97.7±27.7 µm and 91.0 ± 24.0 µm; and trabecular number (Tb.N), 1.24±0.30/mm and 0.99±0.20/mm for the loaded and non-loaded sides, respectively. BV/TV and Tb.N values were higher for the loaded side. Conclusion:Morphological changes occurred in response to functional loading. However, lamellar bone was observed around the implants on both sides. These findings revealed that changes in the bone structure due to functional loading of implants had negligible or no effect on the ISQ value.

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Section: Introductionmentioning

confidence: 99%