Missing tooth can be replaced with permanent implants or dentures as a temporal measure until you decide to get a complete work over. Bridges can also be something that is right for you since the price would be lower than an implant and help give extra support to the adjacent teeth if your other teeth are structurally weak.
As silly as it sounds having “too many” teeth can also be a problem. Because there is only so much space in your mouth sometimes the over growth of a tooth may misalign other teeth. There are also many solutions to this problems such as retainers and braces and also oral surgery and extractions in extreme cases. It is also important to note that you are never too old for braces. Everyone can enjoy a comfy, straight teeth.
You can also clean your teeth of discoloration for that beautiful white smile. For the most part the process doesn’t take too long and you even have the option of doing it yourself at home under a supervision to cut some costs. If you are worried about the risks there may be a mild sensitivity issue during the treatment which disappears post treatment.