The question about white composite fillings versus silver amalgam fillings is asked less often these days than it was formerly when white composite fillings were a relatively new option. Nowadays, some dentists don't even give you a choice: it's white composite fillings or nothing. Many dentists, knowing of the advantages of white composite fillings, have simply switched over, as it were, so that white composite fillings are simply "the" fillings, much as silver amalgam fillings used to be "the" fillings. That said, let's look at five reasons to get white composite fillings.
1.    The first reason to get white composite fillings has to do with your looks. We've all had the experience of being a little too near to a person when they yawn, giving us an eyeful of metaly molars. It's not at attractive sight. You don't want people to think you have black food stuck in your teeth when laughing or yawning etc. White composite fillings, as opposed to their silver counterparts, look natural-most people barely even notice them, if they notice them at all. So, the first reason to get white composite fillings: you'll look nicer than otherwise.
2.    The second reason you want to get white composite fillings has to do with tooth strength. When inserting a white composite filling the dentist is able to drill a much smaller hole than he would with silver amalgam fillings. This means that you're able to keep more of your natural tooth. A natural tooth is a strong tooth, whereas a tooth filled up with foreign objects is prone to crack and break. So, the second reason to choose white composite fillings over silver amalgam fillings is: your tooth will be stronger than otherwise.
3.    The third reason you want to get white composite fillings has to with comfort. Metal, as you know, attracts heat and cold. White composite fillings don't attract heat and cold. This means that for people whose teeth are sensitive to begin with, a silver amalgam filling is going to intensify their sensitivity, and they may not be able to ever eat hot or cold foods without pain. But even if your teeth aren't sensitive, they're more likely to be if you choose against white composite fillings. May as well not start a bad habit by doing so. The third reason to choose white composite fillings over silver amalgam fillings is: comfort; your teeth, and thus your head, will be a lot more comfortable if you do.
4.    The fourth reason you want to get white composite fillings has to do with health. The fact is that silver amalgam fillings contain elements that some would argue are dangerous to humans. Not all humans may be affected by them, of course-your grandma and grandpa probably have some good ol' silver fillings dating back to their childhood, and they're still kicking-but you might as well be cautious. White composite fillings are made from safer stuff than their metal counterparts. The fourth reason to choose white composite fillings over silver amalgam fillings is: you don't want to take any chances with your health.
5.    The fifth reason you want to get white composite fillings has to do with simply being up with the times. When it comes to something as important as your teeth, why settle for old, outdated technology? It won't be too many years before white composite fillings have completely pushed silver amalgam fillings aside. Why not choose the better process now? Why stick with cassette tapes when CDs are obviously the new wave? The fifth reason to choose white composite fillings over silver amalgam fillings is: you want to be current.