Tribological behavior of dental restorative composites in chewable tobacco environment

Abstract

<jats:p> This study investigates the effect of smokeless tobacco on the tribological properties of two commercially used dental composite materials: Tetric N-Ceram and Z350 Dentin shade. It is to evaluate the effect of smokeless tobacco on the wear properties of two dental composite materials after some stipulated period. The wear test was conducted on pin-on-disk tribometer in the presence of artificial saliva under different loading conditions of 10, 15 and 20 N. The pins of the dental composite material were immersed in tobacco solution. The tribological behavior was studied after 2 days, 3.5 days, 6 days, 15 days and 1 month which represented the real conditions for the contact of 1 week, 2 weeks, 1 month, 2 months and 5 months, respectively, between the dental material and the tobacco solution. Under different loading conditions, Z350 Dentin material exhibited much less wear than the Tetric N-Ceram material in the presence of synthetic saliva for the specimen with or without tobacco immersion. The microstructure of the pin surface was inspected using scanning electron microscopy. </jats:p>

Dental composite resin: a review of major mechanical properties, measurements and its influencing factors

“…The mechanical properties of dental composite material are less sensitive to temperature changes in the real oral environment [63,64,109]. The long-term tobacco environment also influences the mechanical and tribological properties of dental restorative materials [110][111][112][113]. Also, the contamination by cigarette smoke decreases the bond strength between dentin and composite resin [114].…”

Application of Tribology Concept in Dental Composites Field: A Scoping Review

“…No animal or human studies were identified. The included studies are listed in the Table 1 [22,[24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39]. The number of publications increased through the years and 13 of 17 articles were published after 2010.…”

“…The number of publications increased through the years and 13 of 17 articles were published after 2010. In addition, 13 studies were published in journals that covered research into mechanical engineering or technology of nanosized and nanostructured materials, including advanced ceramic materials and reinforced plastics and polymer composites [25][26][27][28][29][30][31][32][33][35][36][37][38]; three studies were published in journals that focused on the application of biomaterials and tissue engineering in the medical sciences [24,34,39] and only one was published in a dentistry journal [22].…”

“…Two articles assessed the influence of exposure to different acid solutions [27,29] and two assessed the effect of different pH and aging times [25,36]. Other studies evaluated the effect of temperature and immersion in beverages [26], thermocycling [28], smokeless tobacco at different aging times [34], and different light curing units [39] on mechanical behavior of dental resins. Finally, one article compared the tribological behavior of human enamel with that of some resin composites [32].…”

“…The tribological behavior was investigated for volume loss/penetration depth [22,25,26,29,30,[32][33][34][35]39], roughness [27,28,31,39], plasticity index [26], coefficient of friction [24,25,27,28,30,33,36], wear rate [24,27,33,[36][37][38], Vickers hardness [24,[26][27][28][29]31,36,39], elastic modulus [28,29,35], abrasion resistance [35], flexural [28], and compressive [33] strength.…”