Color stability of heat-cure acrylic resin subjected to simulated short-term immersion in fast-acting denture cleansers

Abstract

Background:Regular usage of denture cleansers is recommended in complete denture wearers for effective plaque control, and these cleansers alter the physical properties of acrylic resin over a period of time. Thus, an in vitro study was carried out to assess the effect of denture cleansers on the color stability of heat-cure denture base resin.Aim:The aim of the present study was to evaluate the effect of commercially available fast-acting denture cleansers on the color stability of heat-cure denture base resin at different time intervals.Materials and Methods:Thirty-six heat-cure acrylic resin (Ivoclar Triplex Hot-V) specimens are randomly allocated into four groups – Group A (distilled water as control); Group B (polident – 3 min); Group C (fixodent scope plus); and Group D (stain away plus) comprising of nine samples each. After recording the baseline values, the specimens were immersed in their respective cleansing solutions for a prescribed time interval. This procedure was repeated daily, and the color change (ΔE) was evaluated after 90 and 180 days interval using a colorimeter in a standard “Commission International de l'Eclairage” color system.Statistical Analysis Used:Paired t-test and Dunnett's T3 test.Results:All the groups exhibited a variable color change (ΔE) for an immersion period of 90 days. However, significant color differences (P = 0.001) were noticed among the test groups after 180 days.Conclusion:The color change of denture base resin was greater for Group D followed by Groups B, C, and A respectively after 180 days of immersion. The ΔE values of all test groups increased with time.

Color Stability and Surface Properties of PMMA/ZrO2 Nanocomposite Denture Base Material after Using Denture Cleanser

“…Although NaOCl is used for disinfection and biofilm control, drawbacks due to the possibility of whitening were reported and considered as the main disadvantage [ 22 ]. This fact is supported by the results of the present study where immersion in NaOCl resulted in significant color changes that were more prominent as the immersion duration increased [ 9 , 23 ]. Robinson et al [ 24 ] reported that the solvent in denture cleansers penetrates into the polymer network and causes expansion of intermolecular spaces facilitating leaching out of intrinsic pigments and penetration of extrinsic colorants [ 24 ].…”

Composition’s effect of Origanum Syriacum essential oils in the antimicrobial activities for the treatment of denture stomatitis

“…A wide range of chemical disinfectants are recommended as decontaminants or cleansers of dentures [ 9 ]. Unfortunately, these chemical solutions can alter the physical and mechanical properties of acrylic denture bases [ 10 ].…”

Evaluation of a glaze polishing technique for pigmented denture acrylic resin submitted to thermocycling and disinfection

“…Chromatic changes can be related to extrinsic and intrinsic factors. [7,[18][19][20][21][22] These changes can also be related to polymer degradation during the aging process due to temperature changes and humidity, [8] or the exposure to chemical products during disinfection. It was observed that the groups polished by glaze presented more color changes than the mechanical polished groups.…”

“…[2,3,17] The disinfection of complete prostheses can be performed with chlorhexidine gluconate, sodium hypochlorite, alkali, and peroxide solutions, as well as with microwave energy. [2,3,[17][18][19] Chlorhexidine gluconate and effervescent tablets are effective in the reduction of microorganisms, but can induce a surface degradation. [18] Microwave disinfection was proven effective against candida species, however, it was associated to color and hardness changes in acrylic resin.…”

“…[2,3,[17][18][19] Chlorhexidine gluconate and effervescent tablets are effective in the reduction of microorganisms, but can induce a surface degradation. [18] Microwave disinfection was proven effective against candida species, however, it was associated to color and hardness changes in acrylic resin. [2,3,17,19] Yet, microwave energy and effervescent tablets are the most accessible disinfection techniques with satisfactory microorganism reduction.…”