Size of Poster 12.6" x 19.2 " printed on 300 GSM (Matt Paper)
Size of Poster 12.6" x 19.2 " printed on 100 GSM (Sticker Sheet)

Some causes of dentin exposure include: ,

Brushing your teeth too hard. This wears away the enamel layer. , 
Poor oral hygiene. This may allow tartar to build up at the gum line. ,
Long-term tooth wear.,
Untreated cavities.,
An old filling with a crack or leak.,
Recending gums that expose the tooth's roots.Recending gums often are caused. 
Gum surgery that exposes a tooth's roots.,
Tooth whitening in people who have tooth roots that already are axposed.,
Frequenty eating acidic foods or drinking acidic beverages.