Offering free checkup is only going to waste time and in the mature market of dentistry, time is most definitely money. Try offering them something different, something only you can offer, what others can’t think of. Try offering a beautiful smile and white teeth session. Sounds weird? Good, because it is supposed to capture attention.
You are offering what people actually want and being specific about it. Same thing presented differently can increase the perceived value of the offer. So make sure you listen to the podcast to know more on the subject.