Research shows that once the teeth are removed, the jaw bone shrinks and changes shape. Typically, dentures should be checked every year, and often they should be remade when they lose their fit and are loose in your mouth after 5-10 years of use. By using dental adhesive, you may have masked the loose fit of your dentures. Even though you have adapted to these dentures, you are not receiving the function and appearance you deserve. Also, it is important that you take your dentures out at night to allow your gum tissues to rest and decrease the possibility of sore spots.