The MOBEX was conducted to rehearse this operation procedure. Commander Song Hwan Yun, 32nd KSC Company, KSC, said, Although these are annual exercises and we perform them every year, the exercises this year, especially the MOBEX, were executed with a contingency or wartime situation in mind.
It is very unfortunate when there are black rims around porcelain crowns and porcelain veneers. This should NOT happen! The black stain around the rim of the crown or porcelain veneers is contamination. The bonding technique was a failure as there was something that was not completed thoroughly. In all fairness to the dentist, it is very difficult to bond porcelain crowns and porcelain veneers at the gum line.
If the chip is small, you are not feeling any pain, and no nerve is exposed, it is possible for a tooth-colored bonded composite filling to be placed to repair the chipped area. However, depending on where the chip is located, how your bite looks, and what shows up on the x-ray of that tooth, the best long-term solution could possibly be a crown. The potential problem with placing a filling in a chipped tooth that would be better served by a crown is that over time, the stresses of your bite and other forces on the tooth may cause the tooth the crack or chip even worse.