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STRAIN ON THE LABIAL PLATES AROUND ABUTMENTS SUPPORTING REMOVABLE PARTIAL DENTURES WITH VARIOUS PROSTHETIC DESIGNS: AN IN VITRO STUDY

Kim, Seong-Kyun   (Department of Prosthodontics, College of Dentistry, Seoul National UniversityUU0000691  );
  • 초록

    Statement of problem. In distal extension removable partial denture, the preservation of health of abutment teeth is very important, but abutment teeth are subjected to unfavorable stress. Purpose. The purpose of this study was to investigate the biomechanical effects of mandibular removable partial dentures with various prosthetic designs using strain gauge analysis. Material and methods. Artificial teeth of both canines were anchored bilaterally in a mandibular edentulous model made of resin. Bilateral distal extension removable partial dentures with splinted and unsplinted abutments were fabricated. Group 1 : Clasp-retained mandibular removable partial denture with unsplinted abuhnents Group 2 : Clasp-retained mandibular removable partial denture with splinted abutments by 6-unit bridge Group 3 : Bar-retained mandibular removable partial denture Strain gauges were bonded on the labial plate of the mandibular resin model, approximately 2 mm close to the abutments. Two vertical experimental loadings (100N and 200N) were applied subsequently via two miniature load cells that were placed at mandibular first molar regions. Strain measurements were performed and simultaneously monitored from a computer connected to data acquisition system. For within-group evaluations, t-test was used to compare the strain values and for between-group comparisons, a one-way analysis of variance (ANOVA) was used and Duncan test was used as post hoc comparisons. Results. Strain values increased as the applied load increased from 100N to 200N for all groups (p


  • 주제어

    Abutment .   Removable Partial Denture .   Biomechanics .   Strain gauge.  

  • 참고문헌 (26)

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  • Kim, Seong-Kyun (40)

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    3. 2005 "삼차원 유한 요소법에 의한 가철성 국소의치 클래스프의 응력 분석" 대한치과보철학회지 = The journal of Korean academy of prosthodontics 43 (2): 218~231    
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    5. 2006 "EFFECT OF IMPLANT DESIGNS ON INSERTION TORQUE AND IMPLANT STABILITY QUOTIENT (ISQ) VALUE" 대한치과보철학회지 = The journal of Korean academy of prosthodontics 44 (3): 325~332    
    6. 2007 "A STRAIN GAUGE ANALYSIS OF IMPLANT-SUPPORTED CANTILEVERED FIXED PROSTHESIS UNDER DISTAL STATIC LOAD" 대한치과보철학회지 = The journal of Korean academy of prosthodontics 45 (6): 717~723    
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