インプラント周囲組織の歯周病学的観察

• Published in: Journal of Japanese Society of Oral Implantology Vol. 13; no. 1; pp. 109 - 118
• Main Authors: 田中 俊憲, 渡邉 諭, 和久田 哲生, 斉木 智章, 村上 慶, 岸田 剛, 伊東 隆利, 横田 誠
• Format: Journal Article
• Language: Japanese
• Published: Japanese Society of Oral Implantology 2000; 公益社団法人 日本口腔インプラント学会
• Subjects: long term follow-up; methodology for the evaluation; periodontal pammeters
• ISSN: 0914-6695; 2187-9117
• DOI: 10.11237/jsoi.13.109

It is usual that a clinical follow-up examination of osseointegrated dental implants is mainly done radiographically with dental X-rays. Hence a conventional dental X-ray reveals only two dimensional information,and we could miss early sign of implant failure. In this study we evaluated the condition of peri-implant mucosa to use periodontal parameters such as plaque index (PLI), bleeding on probing (BOP), probing pocket depth (PPD), probing attachment level (PAL) and Periotest® scores as well as a radiographic parameter for over 7-year controlled follow-up study. The subjects of this study were 32 non-submerged ITI Bonefit® solid screw type implants, all placed in the mandible, in 12 patients with a good oral hygiene. All patients were regularly recalled at 6-month intervals. The overall implant success rate was 100%. On the whole, these implants showed good signs of inflammation, radiographic bone resorption and detectable mobility during the follow-up period.One of the implants caused periimplantitis after 2 years of placement, but it was healed with irrigation. The position of implant shoulder to surrounding mucosa related to periodontal parameters, especially BOP scores. This study indicated that these results might be slightly different from natural teeth, however, the methods used to evaluate the natural dentition could be effectively employed to assess clinical status of dental implants objectively.