One thing is for sure about your teeth is that they are the only ones that you are going to get for free. There are now dental implants available but they are nowhere near the same as the real thing and as dental work goes they can be quite costly. You need to take care of the teeth that you have and with some regular maintenance they should last you a good long time.
Of course you will want to brush them twice a day and that would be when you start your day and before you go to bed at night. You also need to floss them and if you have problems with the floss breaking off or sticking in your teeth then shop around and look for a thinner or waxed dental floss to use.
You also need to have your teeth professionally cleaned at least once a year and you might think of using one of the high tech teeth cleaning gadgets that use water and ultrasound waves to clean your teeth as well. Try to eat fewer sweets, as sugar is proven to promote the formation of cavities. One golden rule to remember is to never use your teeth for anything other than chewing.
Using them to open beer bottles or to cut fishing line is just a bad idea and can lead to your teeth being chipped. Remember to schedule a checkup with your dentist at least once a year also. People tend to judge you by looking at your teeth when you smile and if your teeth are broken and green they are going to assume that you are negligent in other areas of your life as well.
Having a nice bright smile is going to entice people to engage you in conversation and is also going to help you with regards to romance in your life.