インプラント支持補綴装置と部分床義歯の違いが欠損隣接歯の予後に及ぼす影響  [in Japanese] Effects of implant supported fixed prostheses and removable partial dentures on prognosis of teeth adjacent to partial edentulous spaces  [in Japanese]

Access this Article

Search this Article

Author(s)

    • 野川 敏史 Nogawa Toshifumi
    • 北海道大学大学院歯学研究科口腔機能学講座口腔機能補綴学教室 Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University
    • 高山 芳幸 Takayama Yoshiyuki
    • 北海道大学大学院歯学研究科口腔機能学講座口腔機能補綴学教室 Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University
    • 齋藤 正恭 [他] Saito Masayasu
    • 北海道大学大学院歯学研究科口腔機能学講座口腔機能補綴学教室 Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University
    • 横山 敦郎 Yokoyama Atsuro
    • 北海道大学大学院歯学研究科口腔機能学講座口腔機能補綴学教室 Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School of Dental Medicine, Hokkaido University

Abstract

<b>目的</b>:部分欠損症例において,インプラント支持補綴装置(ISFP)と部分床義歯(RPD)が欠損隣接歯の予後に及ぼす影響を比較・検討することを目的として後ろ向きコホート研究を行った. <br><b>方法</b>:北海道大学病院歯科診療センター義歯補綴科にて,2003年から2011年の間に,ISFPまたはRPDを装着し,補綴治療終了後1年以上経過し,年1回以上のリコールに応じている患者を対象とした.全部床義歯装着者や診療録の不備により不適当と判断したものは除外した.調査項目は,性別,年齢,補綴方法,残存歯数とし,欠損隣接歯では,歯種,根管治療の有無,歯冠補綴・修復の有無,同名対合歯の有無を調べた.エンドポイントは抜歯,および何らかのトラブル(破折,脱離,齲蝕,根尖性歯周炎,辺縁性歯周炎)があった時点としてKaplan-Meier法により生存率,トラブル未発生率を算出した.補綴装置間の比較にはlog-rank検定を用い,有意水準は0.05とした.<br><b>結果</b>:対象患者は501名(ISFP:41名,RPD:460名)であった.欠損隣接歯の5年生存率は,ISFPで97.5%,RPDは90.9%であり有意差は認められなかった(<i>P</i>=0.060).トラブル未発生率は,ISFPで89.3%,RPDは70.5%であり有意差が認められた(<i>P</i>=0.008).<br><b>結論</b>:本研究において,補綴装置の選択が欠損隣接歯の予後に影響を及ぼすことが示唆された.

<b>Purpose:</b> The aim of this retrospective study was to compare the five-year survival and complication-free rates of the teeth adjacent to partial edentulous spaces of implant-supported fixed prostheses (ISFP) and removable partial dentures (RPD). <br><b>Methods:</b> The subjects were patients with ISFP or RPD inserted from 2003 to 2011 at the Clinic of Removable Prosthodontics, Hokkaido University Hospital. Patients who had complete dentures or an observation period of less than one year were excluded. The variables of the subjects were gender, age, prostheses, and number of remaining teeth. Variables of the adjacent teeth were the types of teeth, endodontic therapy, state of tooth restoration, and the presence of opposing teeth. The outcomes of this study were tooth extraction and tooth complications. Tooth complications were defined as tooth fracture, loss of retention, caries, periapical disease and periodontal disease. The five-year survival and complication-free rates of the adjacent teeth were estimated by Kaplan-Meier analysis. Differences of these rates for the prostheses were evaluated using the log-rank test (<i>α</i>=0.05). <br><b>Results:</b> In total, 501 patients (ISFP: n=41, RPD: n=460) were selected. The five-year survival rates of the teeth adjacent to the partial edentulous spaces in the ISFP group and the RPD group were 97.5% and 90.9%, respectively. There was no significant difference between the two groups. However, the five-year complication-free rate was significantly higher in the ISFP group (89.3%) than in the RPD group (70.5%). <br><b>Conclusions:</b> The results of this retrospective study suggested that the prognoses of the teeth adjacent to partial edentulous spaces were influenced by the prostheses.

Journal

  • Annals of Japan Prosthodontic Society

    Annals of Japan Prosthodontic Society 7(2), 170-178, 2015

    Japan Prosthodontic Society

Codes

  • NII Article ID (NAID)
    130005065564
  • Text Lang
    JPN
  • ISSN
    1883-4426
  • NDL Article ID
    026363981
  • NDL Call No.
    Z74-G218
  • Data Source
    NDL  J-STAGE 
Page Top