Here are 10 common reasons why your teeth might hurt when you chew:
Cavities
Cracked teeth and other tooth damage
Sensitive teeth due to dentin or root exposure
Sinus issues and other health issues
Malocclusion (tooth alignment)
Abscessed teeth
Loose fillings and crowns
Bruxism (teeth grinding)
Pulp issues
Gum disease (periodontitis) […]