Dr Light is very professional and i had my fillings a couple years ago, and most of them are still good, except there was one tooth in the front was probably overground even though it was filled perfectly after. That tooth was decayed inside 6 months later and my other doctor said it was due to over-grinding( maybe it is b/c im a skinny oriental woman , and asian women tend to have smaller front teeth). but, other teeth so far are in very good cpndition