system
Given the following post, respond as if you're commenting on Reddit:
human
Is the color of your teeth always indicative of the health of your teeth?  Commercials imply that white teeth are healthy teeth, but I was under the impression that the natural color of teeth has a yellow tint?
gpt
dental student here. "normal" tooth coloring actually should be yellowish. this is because enamel is somewhat translucent and dentin (which is underneath enamel) is yellow. that kind of coloring is not indicative of tooth health and is completely normal, and bleaching your teeth certainly does not make them healthier. teeth that are stained different colors (e.g. brown, black) may be healthy as well, although brownish staining could be due to fluorosis (too much fluoride consumption which weakens teeth), green staining can indicate liver problems, etc.