I got the chance to use an interesting piece of small "dental" equipment recently with a patient who broke a provisional: My iPhone! Whenever a patient breaks a provisional I wonder if I missed something with the occlusion? Or did the patient eat something that was hard or sticky? More and more lately I have also been doing what I call a "chew test", which I will explain in this video. Filming it is a great way to review, show the patient and also provide to the lab.