NBDHE Dental Hygienist Practice Test

Hypersensitivity of a root lessens as the tooth forms which of the following? a. Periodontal Ligament b. Pulp c. Cellular cementum d. Enamel - Answer-c. Cellular cementum What nerve supplies the intrinsic muscles of the tongue? a. Trochlear b. Trigeminal c. Glossopharyngeal d. Hypoglossal e. Accessory - Answer-d. Hypoglossal .Which of the following is the most radioresistant? a. Glands b. Reproductive organs c. Bone Marrow d. Skin e. Nerves - Answer-e. Nerves Fluoride is typically introduced in all of the following ways except by ____________? a. Drinking water b. Vitamins c. Injection d. Toothpaste e. Mouthwash - Answer-c. Injection Gingivitis is considered controlled when a. the gums reach the crown. b. no deep pockets appear in the gums c. the gums appear firm d. the plaque has been removed e. there's no bleeding around the gums - Answer-e. there's no bleeding around the gums A flat stone may be used to sharpen a curette by hand. The face of the curette should be at what angle to the stone? a. 50-65 degrees b. 75-85 degrees c. 90-100 degrees d. 100-110 degrees e. 125-135 degrees - Answer-d. 100-110 degrees Radiographic intensifying screens are used for