Objectives: Composite surface sealants were introduced aiming to prevent or decrease the discoloration and microleakage of composite restorations. This study sought to assess the effect of aging on discoloration of two composite surface sealants. Methods: In this experimental study, 24 samples were fabricated of Fortify Plus and BisCover LV composite surface sealants (10mm in diameter and 1mm ...

Composite materials are steadily replacing traditional materials in many industries. For many carbon composite materials, particularly in aerospace applications, durability is a critical design parameter which must be accurately characterized. Lawrence Livermore National Laboratory (LLNL) and Boeing Commercial Airplane Group have established a cooperative research and development agreement (CRA...

conclusions the results showed that the elderlies living in daycare centers had better qualities of lives physically and mentally. therefore, to improve their qualities of lives in two general physical and mental domains, items such as providing family communications inside or outside the nursing homes as well as planning to fulfill mental and psychological needs besides physical issues like mo...

introduction: resin composites are an important part of restorative treatment in modern dentistry. there are many trademarks available in iran market and physico-chemical properties of many of these resin composites are not evaluated yet. this study was carried out to evaluate the physico-chemical properties of four available resin composites and also to assess the effect of aging on their prop...

introduction: given growing elderly population and high prevalence of oral and dental diseases in this age group, this study was conducted to investigate oral health status and related quality of life among older adults in yazd located in central iran. methods: the cross sectional study was carried out on 210 elderly people aged ≥ 60 years under the guise of yazd health care centers who entered...

introduction: d-galactose (d-gal) is well known as an appropriate agent to induced aging effects in the in vivo and in vitro models. in the present study, we selected crocin, the main constituent of crocus sativus l. (saffron), against d-gal cytotoxicity in human neuroblastoma sh-sy5y cells. materials and methods:  cells were pretreated with crocin (25-500 µm) for 24 h and then exposed to d-gal...