Owners of healthy cats are accustomed to the occasional upchucked hairball -- it comes with the territory of being owned by a cat. If your cat eats quickly and vomits right afterwards, visit with your vet to determine if you should be worried.
Here's a great acupoint to work for your cat if she's having dental issues of any sort. Apply gentle pressure to Lung 7, located above the wrist. This acupoint also benefits a cough, asthma, or bronchitis.