Cracked natural tooth beneath a veneer

It would be best if you could get in sooner, but you will be okay, as long as you try to avoid using that tooth.  I would recommend liquids and soft foods until you're able to get in to your dentist.  Your main goal should be keeping that fracture from spreading to your root.  Horizontal fractures usually do not spread, but ones that are more vertical can spread dramatically.  Good luck and I hope this helps. Follow me if you have more questions.Sarah Thompson, DMDReal Self 100

You may want to check with your dentist whether a post and core was done after the root canal to reinforce the tooth.  I would also have the bite checked.

Root canaled teeth are more brittle than vital teeth.  It really depends how badly the tooth underneath is fractured.  At this point my advice would be to not bite into anything and eat soft foods and keep the tooth very clean until you can see your dentist.

If you are not experiencing discomfort you should be fine to wait 5 days. Do not use this tooth for biting or tearing. Pamper it until you see the dentist. Teeth that have root canals are more fragile so be very careful.

When you have a tooth treated with root canal, the entire tooth becomes somewhat brittle. Therefore, the treatment of choice is a protective crown in conjunction with a gold post being placed partially into the root of the tooth, for added support. This should be done asap, to prevent the occurrance of the entire crown being fractured.