Olathe Dentist. Dr. Jon Bevan provides Periodontal (gum) disease, gum disease treatment, periodontal disease, treatment for gum disease, gingivitis to patients suffering from gum disease, receding gums, tooth loss, bleeding gums, sore gums, sensitive gums in Gardner, KS, Spring Hill, KS, Overland Park, KS, Eudora, KS. Gardner, KS Dentist providing Periodontal (gum) disease in Olathe, Kansas.