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The effect of immersion cleansers on gloss, colour and sorption of acetal denture base material
Author(s) -
Polyzois Gregory,
Niarchou Artemis,
Ntala Polyxeni,
Pantopoulos Antonis,
Frangou Mary
Publication year - 2013
Publication title -
gerodontology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.7
H-Index - 54
eISSN - 1741-2358
pISSN - 0734-0664
DOI - 10.1111/j.1741-2358.2012.00657.x
Subject(s) - gloss (optics) , medicine , immersion (mathematics) , dentistry , sorption , composite material , organic chemistry , adsorption , coating , mathematics , pure mathematics , chemistry , materials science
doi: 10.1111/j.1741‐2358.2012.00657.x The effect of immersion cleansers on gloss, colour and sorption of acetal denture base material Objective: To study the effect of peroxide and hypochlorite cleansers on gloss, colour and sorption of acetal denture resins. Materials and methods: Pink acetal and thermoplastic acrylic resins were evaluated. Thirty‐five specimens 39 × 39 × 1.8 mm of each resin were prepared. Each group of specimens ( n = 7) was then immersed into cleansers for 100 days. Group I immersed in tap water, Group II in Corega Extradent for 5 min, Group III in Corega Extradent for 8 h, Group IV in NitrAdine™ Seniors for 15 min and Group V in NaOCl 5.25%. Gloss, colour and weight measurements were taken initially and after 100 days. Data subjected to two‐way anova and Tukey’s test at α = 0.05. Results: Acrylic resin showed reductions of glossiness from −5 to −15 and acetal from −0.2 to −6. Colour changes (Δ Ε *) ranged from 2.64 to 7.64 for acrylic and 2.77 to 26.54 for acetal resin. Sorption for acrylic ranged from 11.64 to 17.06 μg/mm 3 and 9.18 to 24.79 μg/mm 3 for acetal resin. The results of (Δ Ε *) and sorption showed an interaction between denture resins and cleansers. Conclusions: The gloss of acetal resin was less affected by water, peroxides and NaOCl 5.25% compared with acrylic resin. Acetal resin showed clinically acceptable (Δ Ε *) whereas acrylic resin unacceptable ones for water and peroxide solutions. The immersion of acetal resin in NaOCl 5.25% showed clinically unacceptable (Δ Ε *) and higher sorption and should be avoided or should be managed with care.