Denture cleansers, soft lining materials and water temperature: what is the effect?
OBJECTIVE
To investigate the effect of water temperature, in association with four denture cleansers, on the colour and surface roughness of five soft lining materials.


METHODS
Two silicone soft lining materials (Molloplast B and Sofreliner) represented the heat-cured, laboratory-based and chairside materials that are available. The wide range of chairside, acrylic resin-based, temporary soft lining materials was represented by Coe-Soft, Viscogel and Eversoft. An alkaline hypochlorite (Dentural) and three effervescent peroxide solutions with a range of active pH values (Steradent Active Plus, pH 6; Steradent Extra Strength, pH 3; Superdrug Fresh, pH 11) were selected as the cleansers. The denture cleansers were used at two temperatures: 55 degrees C (manufacturers' recommended temperature) and 80 degrees C. The colour of the specimens was evaluated using a colorimeter and the surface roughness was assessed using a three-dimensional, non-contact surface profilometer. This study reported on the effect of using both the higher temperatures and the recommended temperature on the colour and roughness of permanent and temporary soft lining materials.


CONCLUSIONS
The results of the study showed that the temperature of the water used with denture cleansers might have a detrimental effect on the colour and surface roughness of some permanent and temporary soft lining materials.
Handa
Rajesh K
RK
Department of Oral and Dental Science, Division of Restorative Dentistry, Bristol Dental School and Hospital, Bristol, UK.
Jagger
Daryll C
DC
Vowles
Richard W
RW
D001672:Biocompatible Materials / Q000737:chemistry*; D001881:Borates / Q000737:chemistry; D003116:Color; D003124:Colorimetry; D003764:Dental Materials / Q000737:chemistry*; D003820:Denture Cleansers / Q000737:chemistry*; D003822:Denture Liners; D004129:Dimethylpolysiloxanes / Q000737:chemistry; D004202:Disinfectants / Q000737:chemistry; D006358:Hot Temperature; D006801:Humans; D006863:Hydrogen-Ion Concentration; D006997:Hypochlorous Acid / Q000737:chemistry; D021621:Imaging, Three-Dimensional; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008768:Methylmethacrylates / Q000737:chemistry; D016877:Oxidants / Q000737:chemistry; D010545:Peroxides / Q000737:chemistry; D010710:Phosphates / Q000737:chemistry; D012826:Silicone Elastomers / Q000737:chemistry; D012965:Sodium Chloride / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature; D014867:Water / Q000737:chemistry*
D001672:Biocompatible Materials; D001881:Borates; D003764:Dental Materials; D003820:Denture Cleansers; D004129:Dimethylpolysiloxanes; D004202:Disinfectants; C020964:MDX 4-4210; D008689:Methacrylates; D008768:Methylmethacrylates; D016877:Oxidants; D010545:Peroxides; D010710:Phosphates; D012826:Silicone Elastomers; C072295:Steradent; D014867:Water; C069457:Coe-Soft denture lining material; D012965:Sodium Chloride; D006997:Hypochlorous Acid; C009931:poly(ethylmethacrylate)