Question: The key to occlusion is_______________?

• 1. Maxillary permanent first molar
• 2. Maxillary permanent second molar
• 3. Maxillary primary first molar
• 4. Maxillary primary second molar

Question: In centric occlusion, the cusp tip of the maxillary canine is in alignment with which mandibular tooth_____________?

• 1. Facial embrasure of canine and premolar
• 2. incisal embrasure of canine and premolar
• 3. Distal ridge of the cusp of mandibular canine
• 4. Mesial ridge on the facial cusp of mandibular first premolar

Question: When a molar has no opposing tooth, it can become_______________?

• 1. Extruded
• 2. Intruded
• 3. Protruded
• 4. Retruded

Question: In normal occlusion , with which grooves / surface of the permanent mandibular first molar does the mesiobuccal cusp of the permanent maxillary first molar occlude______________?

• 1. Distobuccal groove
• 2. Mesial surface
• 3. Mesiobuccal surface
• 4. Transverse groove

Question: The maxillary teeth which have single antagonist are__________?

• 1. Lateral incisors
• 2. Permanent canines
• 3. Permanent central incisors
• 4. Third molars

Question: The curvature of the cervical line of most teeth will be approximately____________?

• 1. 2 mm less distally than mesially
• 2. 1 mm less distally than mesially
• 3. 2 mm less lingually than buccally
• 4. 1 mm less lingually than buccally

Question: In primates; a tooth with single conical cusp and single root is seen in________________?

• 1. Haplodont
• 2. Heterodont
• 3. Acrodont
• 4. Thecodont

Question: The primary centre of formation of each lobe is present in_____________?

• 1. Apex of the root
• 2. Tip of the cusp
• 3. Centre of the crown
• 4. Centre of the tooth

Question: The interdental papilla is located in the______________?

• 1. Facial embrasure
• 2. Lingual embrasure
• 3. Cervical embrasure
• 4. Occlusal embrasure

Question: Protective crests of contour on buccal and lingual surfaces are found______________?

• 1. In the middle third of the lingual
• 2. Nearest the occlusal third of the lingual
• 3. In the cervical third of the buccal
• 4. Both A and C