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Photofunctionalization enhances bone-implant contact, dynamics of interfacial osteogenesis, marginal bone seal, and removal torque value of implants: A dog jawbone study
26th Euro Congress and Expo on Dental & Oral Health
December 10-11, 2018 | Rome, Italy
Se-Wook Pyo, Jae-Hoon Lee and Takahiro Ogawa
Ajou University, South Korea
Yonsei University, South Korea
University of California, USA
Posters & Accepted Abstracts: Oral Health Dent Manag
Abstract:
Objective: Ultraviolet (UV) light treatment of titanium, i.e., photo-functionalization, has been extensively reported to enhance the osteoconductivity of titanium in animal and in vitro studies. This is the first study to examine whether photofunctionalization is effective on commercial dental implants in vivo. Materials & Methods: Dental implants with a micro-roughened surface were placed into dog jawbones. Photo-functionalization was performed by treating implants with UV light for 15 minutes using a photo device immediately before placement. Four weeks after placement, bone-implant integration was evaluated using a removable torque test and static and dynamic histology. Results: Implant surfaces were converted from hydrophobic to super-hydrophilic after photo-functionalization. Removable torque for photo-functionalized implants was significantly higher by 50% than that for untreated implants. Bone to implant contact (BIC) was significantly higher for photo-functionalized implants in all zones examined: marginal, cortical, and bone marrow zones. An intensive mineralized layer was exclusively present in marginal bone at photo-functionalized interface. Dynamic histology identified early onset, long-lasting robust bone deposition at photo-functionalized interface. Conclusions: Photo-functionalization enhanced the morphology, quality, and behavior of preimplant osteogenesis, including the increased BIC, expedited robust interfacial bone deposition, and improved marginal bone seal and support.
Biography :
E-mail: pyosewook@hanmail.net