Regular dental examinations are an important part of preventive health care.During a dental exam for children, the dentist or hygienist will clean your child's teeth and evaluate your child's risk of tooth decay. A dental exam for children might include application of various protective measures - such as sealants or fluoride treatments - to reduce the risk of decay. A dental exam for children might also include dental X-rays (radiographs) or other diagnostic procedures.During a dental exam for children, the dentist or hygienist will likely discuss your child's diet and oral hygiene habits and demonstrate proper brushing and flossing techniques. Other topics for discussion during a dental exam for children might include preventing oral injuries or, for adolescents, the health risks associated with tobacco, substance abuse and oral piercings.