Question: Generally , contact areas between posterior teeth are located in which directions from the centr of the proximal surface ____________?

• 1. Facially and occlusally
• 2. Facially and gingivally
• 3. Lingually and gingivally
• 4. Lingually and occlusally

Question: An imaginary occlusal curve that contacts the buccal and lingual cusp tips of mandibular buccal teeth is called the _____________?

• 1. Catenary curve
• 2. Curve of spee
• 3. Monson curve
• 4. Wilson curve

Question: The widest incisal embrasure is normally found between which of the following permanent maxillary teeth _____________?

• 1. Central incisors
• 2. Central and lateral incisors
• 3. Lateral incisor and canine
• 4. First and 2nd premolar

Question: Divergence from contact area in proximal surfaces causes embrasures____________?

• 1. Facially
• 2. Lingually
• 3. Cervically
• 4. Facially, lingually , cervically & occlusally

Question: The largest embrasure in posterior teeth is the__________?

• 1. Buccal
• 2. Distal
• 3. Lingual
• 4. Occlusal

Question: Resorption of root of primary incisors starts at_____________?

• 1. 4 yrs
• 2. 6 yrs
• 3. 8 yrs
• 4. 10 yrs

Question: Which among the following is NOT a common finding of the decidous dentition ?

• 1. Tight contacts, absence of spacing
• 2. Shallow overjet and overbite
• 3. Flush terminal plane
• 4. Ovoid arch form

Question: The sharpest cusp of primary first molar tooth is____________?

• 1. Mesiobuccal
• 2. Distobuccal
• 3. Mesiolingual
• 4. Distolingual

Question: Difference between primary and permanent enamel is_______________?

• 1. In prism arrangement
• 2. in mineral content
• 3. No difference in enamel, difference in dentin
• 4. None of the above

Question: Among the difference between teeth in the decidous and the permanent dentition is that_____________?

• 1. Buccal surfaces of the permanent molars are flatter
• 2. Cervical ridges are more pronounced in permanent molars
• 3. Root trunks of decidous teeth are larger compared with their overall root lengths
• 4. Crowns of decidous incisors are wider mesiodistally than their cervico incisal lengths