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Evaluation of standardized porcine bone models to test primary stability of dental implants, using biomechanical tests and Micro-CT. An in vitro pilot study
- Source :
- Journal of Osseointegration, Vol 7, Iss 3, Pp 43-51 (2015)
- Publication Year :
- 2015
- Publisher :
- Ariesdue, 2015.
-
Abstract
- Aim This study evaluated a new porcine bone model to test the primary stability of different implants, analyzing Micro-CT, insertion torque, and pull-out strength. Materials and methods Bone cylinders were prepared from porcine bone and separated into 2 groups: 10 high density bone cylinders (HDB), and 10 low density bone cylinders (LDB). Then, 3D pre-implant analyses were performed, evaluating tridimensional bone density (ratio of trabecular bone volume and total tomographic volume, BV/TV), trabecular separation; percentage of closed pores; percentage of open pores; percentage of total porosity, in 3 bone levels (L1 bone volume corresponding to the internal part of the threads; L2 corresponding to the area between 0 to 0.5 mm from the end of threads; L3 corresponding to the area between 0.5 to 1.5 mm from the end of threads). Twenty implants of two different macrostructures were inserted in the bone cylinders, and divided into 4 groups (5 implants each): Group 1, e-Fix HE implant placed in HDB cylinder; Group 2, e-Fix HE implant in LDB cylinder; Group 3, e-Fix HE Silver implant placed in HDB cylinder; Group 4, e-Fix HE Silver implant in LDB cylinder. The insertion torque was recorded and bone cylinders were re-evaluated by Micro-CT (post-implant analysis). Then a pull-out strength test was performed. Results 3D analysis showed that pre- and post-implants intra-groups evaluation had statistically significant differences in Group 3 and 4, for all tomographic parameters assessed. Group 3 showed the best values for biomechanical tests (Friedman Test, p
Details
- Language :
- English
- ISSN :
- 2036413X and 20364121
- Volume :
- 7
- Issue :
- 3
- Database :
- Directory of Open Access Journals
- Journal :
- Journal of Osseointegration
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.bcb70842f4d86bce7406207212ebb
- Document Type :
- article