Efficacy evaluation of an anti-caries varnish: protocol for a phase II randomised controlled trial.

Introduction: Dental caries (tooth decay) is a common disease in which the products of sugar metabolism by certain bacteria that populate the tooth surface induce the development and progression of lesions (cavities). This is a phase II single-centre randomised, double-blind, active-controlled, parallel-group trial to assess the efficacy of a combination povidone iodine and sodium fluoride dental varnish to determine if it is superior to a varnish containing only sodium fluoride in the prevention of new caries lesions. The objective of this report is to describe the rationale and protocol for the trial.

Symptoms with betel nut and betel nut with tobacco among Micronesian youth.

Betel nut has been stated to be addictive, but evidence is lacking. This study describes dependence symptoms among adolescents using betel alone or with tobacco. In the first study, participants were 151 9th graders in Saipan.

Areca use among adolescents in Yap and Pohnpei, the Federated States of Micronesia.

Objective: Areca (Betel Nut) is the fourth most commonly used psychoactive drug throughout the world and is legal in U.S. It is carcinogenic.