NDAEB Sample Questions with Correct Answers, Graded A+

In relation to dental radiography, which one of the following terms refers to the anatomical landmark used to identify a maxillary canine periapical film? 1. Maxillary sinus. 2. Mental foramen. 3. Bifurcated roots. 4. Maxillary tuberosity. - 1. Maxillary Sinus Prior to exposing a dental radiograph/image, placement of the lead apron over the patient protects which one of the following tissues? 1. Vascular. 2. Gonadal. 3. Muscular. 4. Digestive. - 2. Gonadal A blood pressure cuff should be placed over which one of the following arteries? 1. Pulmonary. 2. Brachial. 3. Carotid. 4. Radial. - 2. Brachial Which three factors are essential in order to produce accurate diagnostic casts? 1. Water to powder ratio, temperature of gypsum and force of mixing. 2. Water temperature, form of gypsum used and force of mixing. 3. Water to powder ratio, mixing time and water temperature. 4. Type of spatula used, vibration and water temperature. - 3. Water to powder ratio, mixing time, and water temperature What is the name of the adhesive film which retains bacterial colonies to the teeth? 1. Striae. 2. Pellicle. 3. Calculus. 4. Materia alba. - 2. Pellicle Which one of the following radiographic images is most useful in detecting interproximal caries? 1. Panoramic. 2. Periapical. 3. Bite-wing. 4. Occlusal. - 3. Bite-wing Which one of the following fluids provides lubrication during the movements of the temporomandibular joint? 1. Blood. 2. Saliva. 3. Synovial fluid. 4. Lymphatic fluid. - 3. Synovial Fluid What is the correct way to store scrap amalgam? 1. In a plastic waste container. 2. In a glass container filled with water. 3. In a metal container with sodium hypochlorite. 4. In a tightly closed mercury recycling container. - 4. In a tightly closed mercury recycling container In a steam sterilizer, the distilled water is converted to steam then condensed back into liquid water. What happens to the condensed water? 1. It is drained from the sterilizer and discarded down the drain in the sink. 2. The sterilizer continues to convert the water to steam over and over. 3. It runs directly from the sterilizer into the sewage system. 4. It must be collected as contaminated liquid waste. - 1. It is drained from the sterilizer and discarded down the drain in the sink A patient presents to the dental office with concerns about sensitivity on a lower canine tooth. The dentist performs an examination and diagnoses gingival recession and abrasion on the facial root surface of tooth 33. The patient has 100% dental insurance coverage for diagnostic, preventive and restorative services. What is the etiology of the sensitivity? 1. Exposed pulp. 2. Exposed dentinal tubules. 3. Hypersensitive dentogingival fibers. 4. Damaged periodontal ligament fibers. - 2. Exposed dentinal tubules A patient presents to the dental office with concerns about sensitivity on a lower canine tooth. The dentist performs an examination and diagnoses gingival recession and abrasion on the facial root surface of tooth 33. The patient has 100% dental insurance coverage for diagnostic, preventive and restorative services. Which one of the following conditions could cause the tooth pathology? 1. Use of an abrasive dentifrice. 2. Fingernail biting. 3. A fibrous diet. 4. Bulimia. - 1. Use of an abrasive dentrifice A patient presents to the dental office with concerns about sensitivity on a lower canine tooth. The dentist performs an examination and diagnoses gingival recession and abrasion on the facial root surface of tooth 33. The patient has 100% dental insurance coverage for diagnostic, preventive and restorative services. Which of the following terms refers to the dentist with regard to the dental insurance? 1. Carrier. 2. Provider. 3. Beneficiary. 4. Assignment. - 2. Provider A patient presents to the dental office with concerns about sensitivity on a lower canine tooth. The dentist performs an examination and diagnoses gingival recession and abrasion on the facial root surface of tooth 33. The patient has 100% dental insurance coverage for diagnostic, preventive and restorative services. The patient should be encouraged to use a dentifrice containing fluoride and which other chemical agent? 1. Triclosan. 2. Gluteraldehyde. 3. Potassium nitrate. 4. Pyrophosphate salts. - 3. Potassium Nitrate