If it's a name brand, send it back to the manufacturer. If not... if it's just a chip in the enamel, you might be able to use the Aga enamel repair kit (I have not tried this). If it's a hole through the cast iron, I don't know of a way to repair it, although a blacksmith might be able to do it!
Dental gel will not repair enamel. The enamel is there to protect your teeth, but once you lose it, you cannot get it back.
enamel
Yes, cast iron enamel cookware is dishwasher safe! Cast Iron is extremely tough andd very durable!
Generally, just using an iron pot to cook will provide you with an adequate amount of iron. Cutting in you iron pot is not advisable as it can be dangerous.
You can order online `Aga enamel repair kit` at http://www.woodstockfires.co.uk/. The kit is specially designed for cookware, so is non-toxic once dry and is heat-resistant. They offer a few color options, hopefully you can find the right color. Hope this helps, Roland
Paint or enamel can protect iron from rusting.
Dishes and pots lined with enamel are not porous on the cooking surface and therefore do not need the oil seasoning that cast iron does.
Not enough heat for not enough time.
moses did it
metal and iron :)