Can Cracks in Dials Be Repaired?

Cracks in vintage, white, enamel watch dials can not be truly repaired.  It's ceramic, so there is no way to re-do it. However, the reason the crack shows is not the crack itself, but because tiny amounts of dark dirt are embedded in the crack. Careful cleaning can get some of that out of there and make it show slightly less. Some use various concoctions of white material to fill cracks.  This may work, but I don't like the idea of deliberately putting stuff in there. It's like dirt and water getting into a crack in the sidewalk or some brick. It will work and work and slowly make the crack larger worse. I do use a dial patching material for worse damage, such as chips, because in that case it actually helps keep the problem from getting worse.