NDEAB practice Exam DA 2024/2025 Questions with Complete Solutions Prior to exposing a dental radiograph/image, placement of the lead apron over the patient protects which one of the following tissues? - Correct Answer Gonadal Which three factors are essential in order to produce accurate diagnostic casts? - Correct Answer Water to powder ratio, mixing time and water temperature.What is the correct way to store scrap amalgam? - Correct Answer 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? - Correct Answer 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? - Correct Answer Exposed dentinal tubules A 24-year-old patient presents for an emergency exam.During the interview it is noted that he is a heavy smoker and has been under a great deal of emotional stress. The clinical examination findings are: a biofilm index of 3 with some ulceration of interdental papillae.What is the recommended treatment for this patient? - Correct Answer Debridement, careful brushing at home, warm water rinses A 75-year-old patient presents at the dental office with a fractured tooth 46. While reviewing the medical history, the dental assistant notes that the patient has rheumatoid arthritis and type II diabetes. 1 / 3
The clinical examination also reveals generalized gingival recession, cervical tooth abrasion and several root caries.Which one of the following tooth brushing techniques should be recommended for this patient? - Correct Answer Rolling stroke.A patient presents for a bridge preparation. The dentist administers the local anesthetic then the dental assistant takes an alginate impression of the lower left quadrant. Teeth 36 and 37 are missing and tooth 38 has drifted into the 37 position. The bridge will go from tooth 35 to tooth 38.The insurance plan provides 80% reimbursement for this type of treatment.What will the alginate impression be used for? - Correct Answer As a matrix for the provisional A patient presents for an emergency examination of tooth 16. The tooth has been sensitive to pressure for several weeks and the patient indicates that it is getting worse. The dentist does an intra-oral examination and prescribes a direct digital periapical radiograph of the area. The dental assistant is directed to assemble equipment and supplies for pulp vitality testing.Which one of the following teeth would be best as the control tooth for the pulp vitality test? - Correct Answer 26 A patient presents for an emergency examination of tooth 16. The tooth has been sensitive to pressure for several weeks and the patient indicates that it is getting worse. The dentist does an intra-oral examination and prescribes a direct digital periapical radiograph of the area. The dental assistant is directed to assemble equipment and supplies for pulp vitality testing.The cold test for the tooth causes an intense pain that does not resolve for a few minutes. What diagnosis is most probable? - Correct Answer Irreversible pulpitis.A dental assistant must be able to self-correct errors made during dental dam punching and placement.From the list of errors below, choose the one that best matches the scenario given in the item.Bunching and stretching on lingual of dam when placed - Correct Answer Arch is punched too flat.A mother of a 5-month-old infant ask the dental assistant which of her daughter's teeth will fall out first.What is the most accurate response? 2 / 3
- Her upper two teeth, the frontal incisors
- Her bottom two teeth, the central incisors
- Her two canine teeth will fall out first
- Her primary molars - Correct Answer 2. Her bottom two teeth, the central incisors
- Sublingual gland
- Parotid gland
- Submandibular glands
- None of the options - Correct Answer 3. Submandibular glands
- Digastric
- Stylohyoid
- Geniohyoid
- Mylohyoid - Correct Answer 2. Stylohyoid
Which of the following produces about 60% of the total amount of saliva?
Which of the following muscles of the mouth floor raises the hyoid bone to assist in swallowing?
This instrument is used to prepare the tooth and plane the walls and floors of the tooth preparation
with a push-pull action:
- Spatula
- Condensers
- Hatchet
- Hoe - Correct Answer 4. Hoe
- / 3
What handpiece would be used for the removal of bonding materials from a tooth surface after orthodontic appliances are removed?