RCD Midterm Exam Questions And Answers Well Detailed 100% Explained Answers.

After setting, preliminary alginate impressions A) remain dimensionally stable for 12 hours B) absorb water C) have higher tear strength than polysulfide impressions D) can be poured twice with little effect on accuracy of resulting cast - correct answer B) absorb water Which of the following geometric occlusion occurs in three dimensions? A) centric occlusion B) flat plane occlusion C) cusp occlusion D) linear occlusion - correct answer C) cusp occlusion The easiest occlusal scheme that can be used for setting up complete dentures in any situation is the monoplane occlusion. A) true B) false - correct answer B) false The hamular notch is important in complete denture construction BECAUSE it aids the dentist in positioning the maxillary posterior teeth. A) both the statement and the reason are correct and related B) the statement and the reason are correct but NOT related C) the statement is correct, but the reason is NOT D) the statement is NOT correct, but the reason is accurate E) NEITHER the statement NOR the reason is correct - correct answer C) the statement is correct, but the reason is NOT A facebow relates the A) mandibular arch to the glenoid fossa B) vertical axis of maxilla to mandible C) hinge axis to maxillary arch D) maxilla to mandible at vertical dimension of occlusion - correct answer C) hinge axis to maxillary arch An incorrect vertical dimension of occlusion causes a patient to overclose and to have a poor facial profile. To correct this problem, the dentist should do which of the following? A) increase VDR and increase interocclusal distance B) decrease VDR and diminish interocclusal distance C) decrease VDO and increase interocclusal distance D) increase VDO and diminish interocclusal distance - correct answer D) increase VDO and diminish interocclusal distance All of the following are goals of balanced denture occlusion EXCEPT one. Which one is the EXCEPTION? A) simultaneous contact in centric relation B) group function C) working side contact D) balancing contact in protrusion E) balancing contact in lateral excursions - correct answer B) group function A patient wearing complete dentures has angular cheilosis. The most likely cause is A) increase vertical dimension B) insufficient horizontal overlap (overjet) C) decreased vertical dimension D) excessive vertical overlap (overbite) - correct answer C) decreased vertical dimension In a complete denture patient, when the teeth, occlusion rims, and central bearing point (relating to force) are in contact and the mandible is in centric relation, the length of the face is known as the A) interocclusal rest space B) vertical dimension C) physiologic rest position D) vertical dimension at rest E) vertical dimension of occlusion - correct answer E) vertical dimension of occlusion When viewed from the anterior, a properly set maxillary canine will have ____________ visible. A) the mesial and distal planes B) only the distal plane C) only the mesial plane D) only the cusp tip - correct answer C) only the mesial plane The posterior occlusal plane of the artificial teeth of the denture is established with A) the Camper's line B) the articulator C) the record base D) none of the above - correct answer A) the Camper's line To improve denture stability, mandibular molar teeth should normally be placed A) over the crest of the mandibular ridge B) buccal to crest of mandibular ridge C) over the buccal shelf area D) lingual to the crest of the mandibular ridge - correct answer A) over the crest of the mandibular ridge The vibrating line of the palate A) delineates the movement of the soft palate B) is always on the hard palate C) is a well-defined line across the palate D) is not a useful landmark in complete denture fabrication - correct answer A) delineates the movement of the soft palate What are the key factors for complete denture impressions? A) to ensure optimal retention, esthetic, and stability of complete dentures B) to ensure optimal retention, support, and stability of complete dentures C) to ensure optimal phonetic, esthetic, and stability of complete dentures D) to ensure optimal dynamic, support, and stability of complete dentures - correct answer B) to ensure optimal retention, support, and stability of complete dentures The function of the compensating curve used in complete denture construction is A) to help provide a balanced occlusion in complete dentures when the mandible is protruded B) to aid in establishing an incisal guide plane C) to aid in modifying the condylar guidance D) to help provide canine guidance when the mandible is protruded - correct answer A) to help provide a balanced occlusion in complete dentures when the mandible is protruded In selecting an impression tray for a preliminary maxillary impression, how far should the tray extend posteriorly? A) to the tuberosity B) to the fovea palatinae C) beyond the vibrating line D) short of the vibrating line - correct answer C) beyond the vibrating line The anatomical landmarks used to help establish the location of the posterior palatal seal of a maxillary complete denture include the A) pterygomaxillary notches and fovea palatinae B) pterygomaxillary notches and the posterior nasal spine C) posterior border of the tuberosities and the posterior border of the palatine bone D) anterior border of the tuberosities, the palatine raphe, and the posterior border of the palatine bone - correct answer A) pterygomaxillary notches and fovea palatinae Which instrument attempts to reproduce the movement of the jaws and maintains the relationship of the maxilla and mandible to the condyles? A) the facebow B) the articulator C) the fox plane` D) the earbow - correct answer B) the articulator When making maxillomandibular records for a complete denture patient, the vertical dimension of occlusion is acceptable when A) interocclusal distanc