Biomechanical and histologic evaluation of non-washed resorbable blasting media and alumina-blasted/acid-etched surfaces.
Clin Oral Implants Res
; 23(1): 132-5, 2012 Jan.
Article
em En
| MEDLINE
| ID: mdl-21435012
ABSTRACT
OBJECTIVES:
To compare the biomechanical fixation and histomorphometric parameters between two implant surfaces non-washed resorbable blasting media (NWRBM) and alumina-blasted/acid-etched (AB/AE), in a dog model. MATERIAL ANDMETHODS:
The surface topography was assessed by scanning electron microscopy, optical interferometry and chemistry by X-ray photoelectron spectroscopy (XPS). Six beagle dogs of â¼1.5 years of age were utilized and each animal received one implant of each surface per limb (distal radii sites). After a healing period of 3 weeks, the animals were euthanized and half of the implants were biomechanically tested (removal torque) and the other half was referred to nondecalcified histology processing. Histomorphometric analysis considered bone-to-implant contact (BIC) and bone area fraction occupancy (BAFO). Following data normality check with the Kolmogorov-Smirnov test, statistical analysis was performed by paired t-tests at 95% level of significance.RESULTS:
Surface roughness parameters S(a) (average surface roughness) and S(q) (mean root square of the surface) were significantly lower for the NWRBM compared with AB/AE. The XPS spectra revealed the presence of Ca and P in the NWRBM. While no significant differences were observed for both BIC and BAFO parameters (P>0.35 and P>0.11, respectively), a significantly higher level of torque was observed for the NWRBM group (P=0.01). Bone morphology was similar between groups, which presented newly formed woven bone in proximity with the implant surfaces.CONCLUSION:
A significant increase in early biomechanical fixation was observed for implants presenting the NWRBM surface.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Condicionamento Ácido do Dente
/
Implantes Dentários
/
Implantes Absorvíveis
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Implantação Dentária Endóssea
Limite:
Animals
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article