Yes, I'd second the chicken wings. You could also back that up with Plaque Off which is a seaweed based supplement that helps to prevent plaque build up. Plaque Off --- Petremedies

Unfortunately dry food does nothing for the teeth, in fact it can contribute to dental problems. For a start some cats don't crunch - they just swallow it whole, therefore no effect whatsoever on the teeth! Even if they crunch it doesnt help clean teeth the biscuit shatters on contact and just leaves a whole load of debris around the teeth and gums.