Dear Sir/Madam!
I would like to have whiter teeth.
I am 53 years old and my teeth are becoming increasingly dark, although I do not smoke and drink coffee only occasionally. The recession of the gums from the teeth and the gaps between the teeth are also becoming increasingly noticeable. Otherwise I maintain regular oral hygiene and visit the dentist fairly regularly.
I have already tried to “whiten” my enamel under professional dental supervision (the dentist was not enthusiastic about my wish to bleach!), but I did not complete the procedure because I experienced severe sensitivity and was also afraid of permanent enamel damage.
Kind regards,
Mojca

Dear Sir/Madam!

Teeth become darker over time, which may be due to deposits accumulating on the surface of the enamel or to changes in the structure of the enamel. With age, enamel matures and its quality (density, organisation of crystals...) improves, which means greater resistance to carious processes, but at the same time greater translucency, which means that the colour of the dentine (dark brown) shows through the enamel more strongly. Removing surface deposits is fairly simple, but if we want to change the structure itself, bleaching is of course necessary (a change in the organisation of crystals in the superficial enamel layer), which also represents a certain chemical injury.
If your teeth are moving apart and the clinical crowns are becoming longer, periodontal disease should certainly be considered. I recommend X-ray diagnostics.

Have a nice day!