Journal
IMPLANT DENTISTRY
Volume 25, Issue 1, Pages 47-53Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/ID.0000000000000332
Keywords
UV-irradiation; periimplantitis; dental implant; micro-CT; SEM
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Funding
- JSPS KAKENHI [23592904]
- Grants-in-Aid for Scientific Research [23592904, 25463058] Funding Source: KAKEN
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Objective: The objective of this study was to investigate morphologically the progression of periimplantitis around an ultraviolet (UV)-light-irradiated implant in dogs. Materials and Methods: Pure titanium implants (3.3 mm in diameter and 8 mm long) were placed into dog jawbone bilaterally. Implants on one side were irradiated with UV light for 15 minutes using a photodevice immediately before placement (UV group), whereas those on the other side were not irradiated (non-UV group). Osseointegration was confirmed 90 days after implant placement by radiography. Experimental periimplantitis was induced by the application of dental floss over 90 days. Clinical and radiographic examination and micro-computed tomography (micro-CT) were performed after 90 and 180 days, and bone resorption was measured. The bone-implant interface in tissue sections was examined by light microscopy. Results: Bone resorption around the UV-irradiated implant was less pronounced than around the non-UV-irradiated implant in the ligature-induced periimplantitis model. Tissue section images revealed no contact and partial destruction at the bone-implant interface. Conclusion: Within the limitations of this preliminary investigation, it is suggested that UV-light-irradiated implants suppress spontaneous progression of periimplantitis.
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