Professionally applied fluorides for preventing and arresting dental caries in low- and middle-income countries: Systematic review.

Objectives: This systematic review aimed to review the safety and effectiveness of professionally applied fluorides for preventing and arresting dental caries in low- and middle-income countries (LMICs).

Methods: Randomized controlled trials conducted in LMICs, in which professionally applied fluorides were compared with placebo/no treatment/health education only or usual care with a minimum one-year follow-up period, were included. Any topically applied fluoride agents such as sodium fluoride (NaF), acidulated phosphate fluoride, silver diamine fluoride (SDF), and nano silver fluoride (NSF) were included.

Tobacco chewing and associated factors among a vulnerable youth population in Sri Lanka.

Background: Tobacco in any form kills millions of people every year. Tobacco addiction among youth shows an increasing trend while smokeless type is becoming more common. This study aimed to describe the lifestyle of chewing smokeless tobacco among a group of high-risk youth population in Sri Lanka.

A three-terminal non-volatile ferroelectric switch with an insulator-metal transition channel.

Ferroelectrics offer a promising material platform to realize energy-efficient non-volatile memory technology with the FeFET-based implementations being one of the most area-efficient ferroelectric memory architectures. However, the FeFET operation entails a fundamental trade-off between the read and the program operations. To overcome this trade-off, we propose in this work, a novel device concept, Mott-FeFET, that aims to replace the Silicon channel of the FeFET with VO- a material that exhibits an electrically driven insulator-metal phase transition.

Preschool teachers as agents of oral health promotion: an intervention study in Sri Lanka.

Background: According to National Oral Health Survey reports and research, Early Childhood Caries has been identified as a serious public health problem in Sri Lanka. More than 65% of preschool-aged children have dental decay and only 2% of them have had treatment. With proper interventions and commitment from public health personnel and responsible community leaders this should be a largely preventable disease.