Effect of storage time on tear strength of extended-pour irreversible hydrocolloid impression materials
Abstract
Objective: The aim of this in vitro study was to evaluate the effect of prolonged storage times on the tear strength of extended-pour irreversible hydrocolloid impression materials.
Material and Method: Eighty four specimens were fabricated from five commercial extended-pour irreversible hydrocolloid impression materials (BluePrint Xcreme, Hydrogum 5, Kromopan, Alginmax and Alginelle) as well as one experimental formula in accordance with the ISO 21563:2013 standard effective for irreversible hydrocolloid impression materials. Specimens were randomly divided in two groups for each impression material (n=7) and subjected to tear strength test immediately (base line) or after 120 hours of storage. Tear strength values were obtained in N/mm and data were analysed with two-way ANOVA (irreversible hydrocolloid brand, storage time). Multiple comparisons were performed with Tukey’s test (p=0.05).
Results: The tear strength of the extended-pour irreversible hydrocolloid impression materials were affected by brand (p<0.0001) and brand-storage time interaction (p=0.005). Storage time did not influence the tear strengths of the extended-pour irreversible hydrocolloid impression materials tested except Alginmax whose mean tear strengths increased after 120 hours of storage (p<0.05). At base line measurements Blueprint Xcreme provided the highest mean tear strength values (1.08±0.19 N/mm) whereas Alginelle provided the lowest mean tear strength values (0.51±0.3 N/mm). Hydrogum 5 provided the highest tear strength values after 120 hours of storage (1.15± 0.12 N/mm) whereas Alginelle provided the lowest mean tear strength values (0.55±0.04 N/mm).
Conclusion. All commercial extended-pour irreversible hydrocolloid impression materials tested maintained their tear strengths after 120 hours of storage.
Keywords
References
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Details
Primary Language
English
Subjects
Health Care Administration
Journal Section
Research Article
Authors
Volkan Şahin
KIRIKKALE ÜNİVERSİTESİ, DİŞ HEKİMLİĞİ FAKÜLTESİ, KLİNİK BİLİMLER BÖLÜMÜ, PROTETİK DİŞ TEDAVİSİ ANABİLİM DALI
Türkiye
Hossein Jodati
This is me
ODTÜ, Biyomedikal Mühendislik Bölümü
Türkiye
Zafer Evis
ODTÜ, Mühendislik Bilimleri Bölümü
Türkiye
Publication Date
December 6, 2018
Submission Date
July 6, 2017
Acceptance Date
August 2, 2017
Published in Issue
Year 2018 Volume: 9 Number: 3