At 8 years old, he should have his front adult teeth present. Adult teeth are more yellow in color than the preceding baby teeth. This is because there is more dentin in the adult teeth. Dentin is yellow in color and is what gives teeth their yellow appearance. The enamel is the outer covering of the teeth and while the enamel is white, it is translucent, and the
thickness of the enamel is not much different in adult teeth as compared to baby teeth. So, the adult teeth are more yellow as a result. This is nothing to be concerned about and certainly teeth whitening is not recommended in a child this young. My advice is to wait until he gets a little bit older (say 16 or above) and then consider whitening his teeth. Also be sure to take him twice a year for cleanings and check ups, as external staining can make the teeth appear more yellow and the professional cleaning will remove this and improve the appearance.
Hope this helps.
Gum disease is caused by bacteria in the mouth that adhere to the teeth and grow out of control and the body's immune system can't effectively get rid of it. Signs and symptoms to look for are reddened and swollen gums, gums that bleed easily, build up on the teeth that cannot be wiped or brushed away, and foul odor of the breath. Loose teeth is another sign. The diagnosis of any form of gum disease has to be made by a licensed dental professional, so regular check ups and cleanings are paramount in helping to determine and treat gum disease if it manifests. The earlier you catch it, the better.
Michael I. Farr, DMD, FICOI
The longevity of fillings is determined by the size of the cavity, the amount of remaining tooth structure, the structural integrity of the tooth, and the kind of forces that the person puts on the tooth both through normal chewing/biting forces and parafunctional forces (activities done with the teeth that are beyond the normal purposes of masticating and talking).
Depending on your situation, a filling may be the best and most conservative way to restore the tooth if there is ample remaining tooth left and forces applied to the tooth are low to moderate. While veneers and crowns are strong and long lasting restorations, they should be utilized as last resorts when other treatment options have failed or there is insufficient remaining tooth left or the biting or parafunctional forces are too high. Healthy tooth most of the time needs to be removed to do veneers and crowns. And once a dentist cuts away part of a tooth, it is gone forever. Sometimes, though, it is necessary.
I know this doesn't directly answer your question. But in all honesty there are many variables to consider when we restore teeth. It's not just "drill and fill". Keep your treatment as conservative as possible until you have to upgrade.
Michael I. Farr, DMD, FICOI