You will be able to eat normally the same day as your reconstruction (or the next morning). it's possible that you may even begin to chew BETTER than you have in a long time. One of the features with a full mouth dental reconstruction is that your bite will be designed to be optimal.
In the first day or two, your mouth or jaw may be tired, so start with softer foods and then work up to harder things. A reconstruction is a major dental procedure. If you had a major medical procedure lie a hip replacement, you wouldn't go out and run a 10K the next day. The same is true with your dental reconstruction and your temporaries-you need to start out easy and then work your way back to the hardest foods.
Moderation and some common sense will keep you in great shape. Thanks, Scott Greenhalgh, DDS