by Teo Wei Han
Edited by Priyanka V
Published 10 Nov 2006
Web Exclusive
It’s advisable to brush your teeth at least twice a day
The soft yellowish deposit on the surface of teeth is also known as tartar (calculus)
Plaque forms on the surface of teeth within hours after thorough brushing.
The water supply in Singapore is fluoridated 0.6parts per million.
Stains [...]
