대한치과보철학회지 (The Journal of Korean Academy of Prosthodontics)

  • 제41권5호
  • /
  • Pages.626-639
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  • 2003
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  • 0301-2875(pISSN)
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  • 2005-3789(eISSN)
대한치과보철학회 (The Korean Academy of Prosthodonitics)
권호 표지

Vinyloligosilsesquioxane 함유 의치상용 아크릴릭 레진의 마모 저항성

ABRASION RESISTANCE OF DENTURE BASE RESIN INCLUDING VINYLOLIGOSILSESQUIOXANE

  • 박란 (연세대학교 치과대학 보철학교실) ;
  • 심준성 (연세대학교 치과대학 보철학교실) ;
  • 한동후 (연세대학교 치과대학 보철학교실)
  • Park Ran (Department of Prosthodontics, Graduate School, Yonsei University) ;
  • Shim June-Sung (Department of Prosthodontics, Graduate School, Yonsei University) ;
  • Han Dong-Hoo (Department of Prosthodontics, Graduate School, Yonsei University)
  • 발행 : 2003.10.01
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초록

Statement of problem : Recently, in attempts to reinforce the acrylic resin and to reduce the polymerization shrinkage, it has been reported that adding vinyloligo-silsesquioxane (vinyl-POSS) to PMMA significantly compensates for polymerization shrinkage and somewhat increases the fracture resistance. Purpose : There haven't been any studies on abrasion that can affect the adaptation of the denture in long-term use. In this study abrasion resistance was compared between acrylic resin with vinyl-POSS and commercialized acrylic resin for denture base. In addition, the difference in abrasion resistance according to molding methods was compared. Material and method : Using PaladentR 20 including vinyl-POSS. PaladentR 20, Lucitone 199R, SR IvocapR, denture bases were fabricated using compression molding technique and continuous-pressure injection technique. Surface hardness and abrasion were measured for each group, and the worn surfaces were observed under a scanning electron microscope. Results : 1. When surface hardness was measured for each material and molding technique, there was no statistically significant difference among the materials. (p<0.05) 2. When same denture base material and molding technique were used, the abrasion due to toothpaste solution was 5 times as severe as the abrasion due to soap solution. 3, When toothpaste solution was used, the abrasion decreased in the order of PaladentR20, PaladentR 20 including vinyl-POSS, SR IvocapR, and Lucitone 199R. However statistically significant difference was seen only among PaladentR 20, SR IvocapR, and Lucitone 199R. (p<0.05). 4. When soap solution was used, the abrasion was more severe in PaladentR 20 and including vinyl-POSS PaladentR 20 groups than in SR IvocapR and Lucitone 199R groups. (p<0.05). Conclusion : Addition of vinyl-POSS doesn't improve the abrasion resistance, and the abrasion resistance was similar to those of existing materials. Additional studies under different conditions are needed. For clinical application of vinyl-POSS, further investigations with different requirements and conditions are necessary.

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