The Journal of Advanced Prosthodontics

  • 제9권3호
  • /
  • Pages.182-187
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  • 2017
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  • 2005-7806(pISSN)
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  • 2005-7814(eISSN)
대한치과보철학회 (The Korean Academy of Prosthodonitics)
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The effect of prolonged storage and disinfection on the dimensional stability of 5 vinyl polyether silicone impression materials

  • Nassar, Usama (Faculty of Medicine and Dentistry, Department of Dentistry, University of Alberta) ;
  • Flores-Mir, Carlos (Faculty of Medicine and Dentistry, Department of Dentistry, University of Alberta) ;
  • Heo, Giseon (Faculty of Medicine and Dentistry, Department of Dentistry, University of Alberta) ;
  • Torrealba, Ysidora (Faculty of Medicine and Dentistry, Department of Dentistry, University of Alberta)
  • 투고 : 2016.08.23
  • 심사 : 2017.03.21
  • 발행 : 2017.06.30
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초록

PURPOSE. Vinyl polyether silicone (VPES) has a different composition from other elastomeric impression materials as it combines vinyl polysiloxane (VPS) and polyether (PE). Therefore, it is important to study its properties and behavior under different test conditions. This study investigated the dimensional stability of 5 VPES consistencies when stored for up to 2 weeks, with and without using a standard disinfection procedure. MATERIALS AND METHODS. 40 discs of each VPES consistency (total 200) were made using a stainless steel die and ring as described by ANSI /ADA specification No. 19. 20 discs of each material were immersed in a 2.5% buffered glutaraldehyde solution for 30 minutes. Dimensional stability measurements were calculated immediately after fabrication and repeated on the same discs after 7 and 14 days of storage. The data was analyzed using two-way ANOVA with a significance level set at ${\alpha}=0.05$. RESULTS. The discs mean contraction was below 0.5% at all test times ranging from $0.200{\pm}0.014$ to $0.325{\pm}0.007$. Repeated measures ANOVA showed a statistically significant difference after 2-week storage between the disinfected and non-disinfected groups (P < .001). Although there was no statistically significant difference between the materials at the time of fabrication, the contraction of the materials increased with storage for 1 and 2 weeks. CONCLUSION. The dimensional changes of VPES impression discs after disinfection and prolonged storage complied with ANSI/ADA standard. The tested VPES impression materials were dimensionally stable for clinical use after disinfection for 30 minutes in glutaraldehyde and storage for up to 2 weeks.

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참고문헌

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  2. Dimensional Stability of Elastomeric Impression Material After Disinfection Via Immersion and Microwave Irradiation vol.15, pp.1, 2021, https://doi.org/10.2174/1874210602115010658
  3. Comparative Study of Dimensional Stability and Detail Reproduction of Reformulated and Nonreformulated Elastomeric Impression Materials vol.30, pp.4, 2017, https://doi.org/10.1111/jopr.13248