サブマージドインプラントにおける早期骨吸収に関与する因子についての一考察

DOI
  • 山本 英一
    東北・北海道支部（北海道形成歯科研究会） 北海道大学大学院歯学研究科口腔健康科学講座口腔分子生化学教室
  • 上林 毅
    東北・北海道支部（北海道形成歯科研究会）
  • 南部 聡
    東北・北海道支部（北海道形成歯科研究会） 北海道大学大学院歯学研究科口腔健康科学講座口腔分子生化学教室
  • 林 理
    東北・北海道支部（北海道形成歯科研究会）
  • 柴多 浩一
    東北・北海道支部（北海道形成歯科研究会）
  • 川村 良
    東北・北海道支部（北海道形成歯科研究会）
  • 水野 守道
    北海道大学大学院歯学研究科口腔健康科学講座口腔分子生化学教室
  • 田村 正人
    北海道大学大学院歯学研究科口腔健康科学講座口腔分子生化学教室

書誌事項

タイトル別名
  • Investigation of Factors That Promotes Early Implant Marginal Bone Loss in Submerged Implants

この論文をさがす

抄録

Introduction: In the procedures for submerged implants (two-stage protocol), the implant body is isolated from the oral environment by the mucoperiosteum during the healing between the stage Ⅰ and stage Ⅱ surgery, and outer stresses and infections cannot easily reach the implant body. Nevertheless, bone resorption occasionally develops around the implant body, and that at stage is defined as early implant marginal bone loss. In this study, to investigate the primary factors considered to be closely related to the prognosis of placed implants, we assessed the following six items: original vertical gap between the alveolar bone level and the implant shoulder, upper and lower jaws, sex, presence/absence of denture, smoking/non-smoking and the presence/absence of gingival tissue exposure.<br/> Subjects and Methods: One hundred sixty-seven patients (62 male and 105 female) were included in this study. Mean age at placement was 58.5, ranging from 15 to 79. Number of implants placed in the upper and lower jaws were 258 and 339, respectively. A spline implant was used in all cases and the placement was carried out by the same surgeon (H.Y.). Four reference points (me-sial, buccal, lingual and distal side) were set around the implants. Each distance between the shoulder of the implant and the edge of the bone crest at both the first placement and stage Ⅱ surgery were measured. The mean value of each subtraction, the former from the latter, was calculated as the amount of early implant marginal bone loss for an individual implant.<br/> Results: Multivariate analysis demonstrated that early implant marginal bone loss was closely related to the following four items in an increasing manner: smoking, denture wearing, original vertical gap between the alveolar bone level and the implant shoulder, and gingival tissue exposure, and a significant difference (p＜0.05) was seen in all of them. No tendency, however, was seen in the position of the upper or lower jaw, or sex.<br/> Conclusion: This study showed that the level of early marginal bone loss was primarily related to gingival tissue exposure.

収録刊行物

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ