Hi Doctor Moore, I am 28 years old. i have more 4 root canals in my mouth and covered by crowns. i was not very careful about my oral health but now i have been doing flossing,cleaning properly since last year. my front teeth have not undergone any treatment yet. but a gap is generating day by day between these teeth and it looks unaesthetic. is due to flossing? i am not too old to loose my teeth. there is a gum shrinkage in these teeth. in spite of all my measures of brushing, flossing etc , there is no positivism. What should i do? i want to save my front teeth at least to preserve my smile. please help.