NBDE Part II - 2009 Exam A QUESTIONS AND ANSWERS 100% CORRECT

A patient has pain over the left pre-auricular area; this patient can open approximately 45 mm and has a "pop-and-click" in the joint area. The most likely diagnosis is A. myofascial pain dysfunction syndrome. B. internal derangement with reduction. C. auriculotemporal syndrome. D. coronoid hyperplasia. Correct Answer: B. internal derangement with reduction. Erythromycin is responsible for numerous drug interactions, some of which are fatal. This is because erythromycin A. increases the absorption of many drugs. B. decreases the absorption of many drugs. C. decreases cytochrome P-450 metabolism of other drugs. D. increases renal reabsorption of many drugs. E. decreases distribution of many drugs. Correct Answer: C. decreases cytochrome P-450 metabolism of other drugs. The penetrating quality of x-ray beams is influenced by which of the following? A. Kilovoltage B. Milliamperage C. Exposure time D. Focal-film distance E. Filament temperature Correct Answer: A. Kilovoltage Contraction of the lateral pterygoid muscle moves the articular disk in which of the following directions? A. Anteriorly and medially B. Posteriorly and medially C. Anteriorly and laterally D. Posteriorly and laterally E. Anteriorly, laterally, and inferiorly Correct Answer: A. Anteriorly and medially A decrease in which of the following causes an increase in radiographic density? A. Milliamperage (mA) B. Kilovoltage peak (kVp) C. Object-film distance D. Source-film distance E. Exposure time Correct Answer: D. Source-film distance A 2-day-old developing plaque consists primarily of A. Treponema species. B. Bacteroides species. C. filamentous organisms. D. gram-positive cocci and rods. E. a structureless, non-mineralized pellicle. Correct Answer: D. gram-positive cocci and rods. Each of the following is an electromagnetic radiation EXCEPT one. Which one is the EXCEPTION? A. Radar B. X rays C. Alpha rays D. Gamma rays E. Visible light Correct Answer: C. Alpha rays Which of the following is NOT a complication of radiation therapy? A. Mucositis B. Xerostomia C. Osteoradionecrosis D. Granuloma Correct Answer: D. Granuloma Each of the following is known to contribute to orofacial clefting EXCEPT one. Which one is the EXCEPTION? A. Valium® B. Poor diet C. Acetaminophen D. Vitamin deficiency or excess Correct Answer: C. Acetaminophen Which of the following physical signs indicates severe CNS oxygen deprivation? A. Dilated pupils with increased light reflex B. Pinpoint pupils with increased light reflex C. Dilated pupils with an absence of light reflex D. Pinpoint pupils with an absence of light reflex Correct Answer: C. Dilated pupils with an absence of light reflex Subconjunctival hemorrhage is most commonly found in which of the following fractures? A. Nasal B. LeFort I C. Frontal sinus D. Zygomatic arch E. Zygomaticomaxillary complex Correct Answer: E. Zygomaticomaxillary complex Which of the following drug groups increases intraocular pressure and is, therefore, contraindicated in patients with glaucoma? A. Catecholamines B. Belladonna alkaloids C. Anticholinesterases D. Organophosphates Correct Answer: B. Belladonna alkaloids Which of the following best describes a vestibuloplasty? A. Bone is added to the mandible to augment its height. B. Osseointegrated dental implants are placed to support prosthesis. C. Soft tissue is repositioned in order to increase the area on which the denture may be supported. D. The chin is augmented to enhance esthetics. E. Periodontal tissue is removed from around a tooth to establish a biologic width. Correct Answer: C. Soft tissue is repositioned in order to increase the area on which the denture may be supported. On a new patient's initial appointment, the dentist should do which of the following first? A. Establish rapport B. Inform C. Gather information D. Evaluate Correct Answer: A. Establish rapport An elderly patient has worn a maxillary complete denture against 6 mandibular anterior teeth for an extended period of time. In examining the edentulous mouth of this patient, the dentist would probably see which of the following? A. Intrusion of the mandibular anterior teeth B. Flabby ridge tissue in the posterior maxillary arch C. Loss of osseous structure in the anterior maxillary arch D. Cystic degeneration of the foramina of the anterior palatine nerve Correct Answer: C. Loss of osseous structure in the anterior maxillary arch The use of study casts in orthognathic surgery does each of the following EXCEPT one. Which one is the EXCEPTION? A. Constructs splints B. Performs model surgery C. Determines the postoperative occlusion D. Identifies the type of skeletal deformity E. Aids in explaining the surgical procedure to the patient Correct Answer: D. Identifies the type of skeletal deformity An analgesic compound #3 contains how many mg of codeine? A. 7.5 B. 15 C. 30 E. 60 Correct Answer: C. 30 Acute pyogenic bacterial infections produce A. leukopenia. B. lymphopenia. C. neutropenia.