I have a gum flap between my lower canine and the tooth in front of it. the last time I was at the dentist was 6 months ago for an extensive cleaning and I have been brushing and flossing twice a day. it is time for my next checkup and I noticed I have recently developed a cavity between the 2 teeth under the gum flap. I guess I am scared to go for fear that my teeth are going to need to be extracted and the cost of the procedure. Can anyone make this a little easier for me?