[Experimental model of tooth decay as an educational tool for school-age children].

Objective This work consisted of the construction of an educational in vitro model of dental caries that started with an adaptation of Miller's classic experiment. Methods In a sterilized and sealed glass jar, a sample paste of human saliva was collected and a substrate of manufactured sugar (sucrose) was added. In addition, a human tooth with healthy dental crown extracted in dental treatment but otherwise healthy was added.

[Antimicrobial activity "in vitro" of calcium hydroxide and tergentol on different concentrations in oral bactéria].

Purposes: This research desenvolved in Rio Grande do Norte Federal University, Department of Dentistry purpose evaluation "in vitro" Ca(OH) and tergentol solutions action in oral cavity that first reside in and cariogenic microorganisms for dental biofilm chemical control increasing.

Methods: "In vitro" tests with antibiogram discs and biofilm formers bacteria antibiothic action from Ca(OH) and tergentol solutions and the 0.12% clorhexydine digluconate as "gold-standard".