Home > Lifestyle > How to boast a beautiful smile > News News All sections in Lifestyle » Diet and nutrition » Fitness » Man » Sex » Parenting » Woman » Contraception » Environmental Health » Health and Your Money » Healthy Home » Healthy Workplace » Mental Health » Pet Health » Stop Smoking » Street Drugs » Sun » Teen » Travel Health » Ageing well » Natural Health » Health tech » All lifestyle sections Lasers may help regrow teeth Scientists have found a way to coax dental stem cells to form dentin, the tissue that makes up the largest part of a tooth. Follow us on Twitter » Like us on Facebook » Read Health24 blogs » Ask the Dental expert » load more articles advertisement From our sponsors R2000 Skin Renewal online store voucher up for grabs! Dementia and Incontinence: what you need to know 8 strategies for treating both your bladder problems and your depression Symptoms differ from person to person, identifying what triggers your IBS Live healthier Cracked rib? » Here's why coughing can be good for you SEE: How long should a cough last? 7 ways coughing can injure your body The average cough lasts between two and three weeks and usually causes no serious physical damage – but beware when a cough turns violent! Heart health » Can you reverse your heart's age? Air purifiers may protect your heart against pollution You're not too young to have a heart attack How much do you really know about the things that can go wrong with your heart throughout the course of your life?