How strong is temporary veneers/crown?

Temporary are only temporary just like with a temporary crown.  They are glued on and  will stay on for a couple of weeks until you get your new veneers placed. I would just be careful and not eat an apple by using only your front teeth to bite into it!  That is putting stress only on the front teeth and your temporary veneers.Just be mindful they are temporary and not permanent!  You will do fine!  Congratulations and I hope your new veneers look great!

Since temporary veneers are not permanently fixed to your teeth, sometimes they may be damaged or loosened.  The strength of your veneers depends on what the adhesive (glue) that is used to temporarily put them on (Flowable composite resin, etc), the temp material itself (Protemp, Integrity, Radica, Acrylic, etc), and how they were temporarily bonded (shrink wrapped, spot bonded, etc).If the veneers are connected (splinted) together there is a stronger bond.  If you repeatedly press with your tongue, eventually you will loosen the veneers. However, normal contact with the tongue (during speaking, chewing, etc) should not loosen the veneers. Veneers are most often loosened while eating SOMETHING.  Generally, you can eat any food you wish (I recommend biting off to one side, instead of directly using your two front teeth.). I recommended to TEMPORARILY exclude some meals from your usual diet eating only soft food during the first days after the veneers placement. Among the most common things to avoid are:Toast, pretzels, and other hard, crusty breadsIce (even crushed ice is bad)Meat that is difficult to chewNuts, seeds, pitted foodsChocolate (Thick, hard chocolate squares)Sticky food (gums, candies, taffy)As with all information ask your local dentist before proceeding with treatment.Hope that helps.