Dental Hygiene At City Dental, we offer a variety of dental hygiene services. Oral Health Assessment Our licensed dental hygienists look for signs of potential oral health problems. Periodontal Cleaning A professional dental cleaning should be done at least twice a year or as per your hygienist's recommendation. Teeth Whitening We use a professional light-activated system that gives clear results with no sensitivity following treatment. Preventative Fluoride Treatment Fluoride is a natural mineral which helps to build strong teeth and prevents cavities. Oral Hygiene Instructions Personalized advice about how you should be cleaning your teeth at home.