Influence of long term immersion of heat-cured silicone soft liner in denture cleanser

This study was conducted to identify the effect of long-term immersion of heat-cured silicone soft liner Molloplast-B in a new alkaline peroxide formulation on its elastic behavior as well as its surface hardness. From the results obtained, it was concluded that daily immersion of Molloplast-B in New Steradent Aktiv 3 denture cleanser and surface characteristics, while only 10-minute or 8-hour immersion per week did not alter these properties. The bacteriological study proved that 8-hour immersion, once every week, in New Steradent Aktiv 3 was sufficient enough as a disinfectant to inhibit fungal growth on Molloplast-B. On the other hand, 10-minute immersion per week was not enough for that inhibition. 8-hour immersion in New Steradent Aktiv 3 can be confidently recommended as an effective and safe denture cleaner for patients wearing dentures lined with Molloplast-B

Histopathological study of the alveolar mucosa supporting visible light cure acrylic complete denture

This study was conducted on 12 complete edentulous patients, their age ranged between 50 and 60 years. Patients were divided into two groups. Group I included six patients to whom complete dentures were constructed using cross-linked heat cured resin material. Group II included six patients to whom complete dentures were constructed using visible light cure resin material, following the manufacturer's instructions. Two biopsies were taken from each patient. The first one before wearing dentures, while the second one was taken eight months after wearing dentures. All biopsies were taken from the mandibular bicuspid area. The inflammatory cellular infiltration found before wearing denture almost disappeared in all cases after wearing denture made of the heat cured resin, while it was still present in the most of the cases treated with the VLC resin

Effect of different curing techniques and water sorption on dimensional changes of complete denture laboratory study

This study was done to explore the effect of processing techniques on the dimensional discrepancy of the maxillary acrylic resin complete dentures. The techniques of polymerization used were the short term curing method, long method, microwave method and the VLC method. Points of references were determined on the denture [including the labial and buccal flanges and the posterior palatal border] and on the occlusal surface. All measurements were undertaken before and after separation of the denture from the cast after one day, one week, two and four weeks of soaking dentures in water. The results showed that the microwave and VLC techniques were proved to be superior, in regard to dimensional accuracy, to both the water systems, even though they were most expensive and need special equipment. As regard water sorption, it was found that 24 hours is enough time to soak the dentures to partially compensate for the processing shrinkage taking place