The early osseointegration of the laser-treated and acid-etched dental implants surface: an experimental study in rabbits
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The aim of the study was to evaluate early osseointegration of the laser-treated and acid-etched implant surface after the installation in rabbit tibias for 4 weeks. A total of 56 screw-shaped implants were grouped as follows: group A: implants were turned surface; group B: implants were laser-treated surface; group C: implants were acid-etched; group D: Implants were laser-treated and acid-etched surface. After 4 weeks, the removal torques were: group A: 13.21 ± 11.30 Ncm; group B: 29.73 ± 8.32 Ncm; group C: 30.31 ± 9.45 Ncm; group D: 35.76 ± 7.58 Ncm; The averages of bone-to-implant contact (BIC) were as follows: group A: 27.30 ± 6.55%; group B: 38.00 ± 8.56%; group C: 42.71 ± 8.48%; group D: 49.71 ± 9.21%. The removal torque and bone-to-implant contact measurements yielded statistically significant differences between the treated groups and turned group (P < 0.05); The laser-treated and acid-etched surface achieved higher Bone-to-Implant Contact than the laser-treated surface (P < 0.05), but there was no statistically significant difference between the laser-treated and acid-etched surface and the acid-etched surface in bone-to-implant contact (P > 0.05). In the present study, it was concluded that the laser-treated and acid-etched implants had good osteoconductivity and was a potential material for dental implantation.
KeywordsBone Apposition Removal Torque Optimal Surface Roughness Dental Implantation Good Osseointegration
Project name: (1) National Science/Technology Pillar Program in the Eleventh Five-year Plan Period. Serial number: 2007BAI18BO6; (2) Science and Technology Three Item of Funds Plan Project of Guangdong Province. Serial number: 2006B19901006. This work was supported by the Guangdong Provincial Stomatological Hospital (Southern Medical University, China) and Guangdong Medical College.
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