Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
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The Effect of Glass Fiber Reinforcing Materials and Thermocycling on the Transverse Strength of Denture Base Resin

유리 섬유 의치상 레진 강화재와 열 순환이 의치상 굽힘 강도에 미치는 영향

  • Jin, Sung-Eun (Department of Prosthodontics, College of Dentistry, Dankook University) ;
  • Cho, In-Ho (Department of Prosthodontics, College of Dentistry, Dankook University)
  • 진성은 (단국대학교 치과대학 치과보철학교실) ;
  • 조인호 (단국대학교 치과대학 치과보철학교실)
  • Received : 2013.08.04
  • Accepted : 2013.10.20
  • Published : 2013.12.31
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Abstract

This study aimed to investigate the reinforcing effect of two kinds of glass fiber, Quarts Splint$^{TM}$ Mesh and SES MESH$^{(R)}$ and to evaluate the effect of the thermocycling on the transverse strength of the denture base and on the reinforcing effect of the reinforcements. 20 specimens of the size of $2.5{\times}10.0{\times}65.0mm$ were fabricated for each group; control group, metal mesh reinforcement group, Quarts Splint$^{TM}$ Mesh reinforcement group and SES MESH$^{(R)}$ reinforcement group. To find the difference made by the thermocycling, 10 specimens of each reinforcement group were treated by thermocycling. 3-point bending test was performed to measure the transverse strength of the denture base resin. The specimens reinforced with SES MESH$^{(R)}$ and Quarts Splint$^{TM}$ Mesh showed significantly higher transverse strength than the control group (P<.05), and significantly lower transverse strength than the specimens reinforced with the metal mesh (P<.05). Thermocycled specimens were lower in transverse strength than non-thermocycled specimens in the control group, metal mesh group, Quarts Splint$^{TM}$ Mesh group and SES MESH$^{(R)}$ group, however significant difference (P<.05) was found only in the control group.

본 연구에서는 두 종류의 유리 섬유 의치상 강화재인 Quarts Splint$^{TM}$Mesh와 SES MESH$^{(R)}$의 의치상 보강 효과와 열 순환이 의치상의 굽힘 강도와 강화재의 강화 효과에 미치는 영향을 알아보고자 하였다. 시편은 $2.5{\times}10.0{\times}65.0mm$ 크기로 강화재를 사용하지 않은 대조군, 금속 격자 강화재, Splint$^{TM}$Mesh, SES MESH$^{(R)}$로 보강한 시편을 각각 20개씩 제작하였으며 그 중 10개에는 열 순환을 시행하였다. 3점 굽힘 실험을 시행하여 의치상의 굽힘 강도를 측정하였다. Quarts Splint$^{TM}$Mesh와 SES MESH$^{(R)}$로 강화한 군은 대조군보다 유의하게 높은 굽힘 강도를 나타내었으며(P<.05), 금속 격자 강화재로 보강한 군보다 유의하게 낮은 굽힘 강도를 나타내었다(P<.05). 모든 군에서 열 순환을 시행한 경우가 열 순환을 시행하지 않은 경우에 비해 낮은 굽힘 강도를 나타내었지만 대조군에서만 유의한 차이를 나타내었다(P<.05).

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