First permanent tooth emerges at the age of 6 years (first molars) With the emergence of this teeth begins the transition or mixed dentition period (6 to 12 years); where a mixture of permanent and primary teeth are present. TOOTH FACTS Tooth eruption begins prenataly (before birth) about 14 weeks inutero and gets completed postnataly at age of 3 The number of primary teeth is 20 and permanent is 32The number of primary teeth is 20 and permanent is 32
STRUCTURE OF TEETH Tooth has a crown and root portion – crown is coveredTooth has a crown and root portion – crown is covered with enamel and root with cementum with enamel and root with cementum The four tooth tissues are enamel, cementum, dentinThe four tooth tissues are enamel, cementum, dentin and pulp. and pulp.
Whats in Tobacco? Tar: Black sticky substance used to pave roads. A pack a day smoker would accumulate 1 quart of tar a year in their lungs. Contains most of the cancer-causing agents of tobacco smoke. Nicotine : Insecticide Carbon Monoxide : Car exhaust Acetone : Finger nail polish remover Ammonia : Toilet Cleaner Cadmium : Used batteries
Ethanol: Alcohol :Used to keep cigarettes burning Arsenic : Rat poison Butane : Lighter Fluid Benzene : Found in moth balls DDT : Insecticides Formaldehyde : Dead body preserver Whats in Tobacco?
GOLDEN RULES FOR BETTER TEETH Brush twice daily Brush twice daily Floss regularly Floss regularly Visit your dentist every six months Visit your dentist every six months
CREDITS CDH wing IDA kerala state 2010 Dr. Samuel K Ninan (President, IDA Kerala state Branch 2010) Dr. Shibu Rajagopal (Secretary, IDA Kerala state Branch 2010) Dr. Joseph C C (Chairman CDH Kerala Branch 2010) Dr. Mehul R Mahesh & Dr. Akhil