1. "Stomalgin"

2. "Sielast" *

3. "Orthokor"

4. "Stens"

5. "Repin"

146. To the patient age of 35 years spend preparation 12, 11, 22 teeth under metal-ceramic crowns for making dental bridge. On what surfaces of teeth there can be a generated ledge:

1. Contact surface, at an angle 30 °

2. Circle, at an angle 30 °

3. Frontal surface, at an angle 125 °

4. Contact surface, at an angle 125 °

5. Circle, at an angle 90 ° *

147. A 36-years-old patient addressed to the dentist for the purpose obtains the orthopedic treatment. It has been decided to make a stamped metal bridge. During checking of metal stamped crowns in an oral cavity bite overestimate on an artificial crown of tooth 46 is appreciable. The crown edge doesn't reach to gingival edge up to 1 mm. What actions should be used in this case?

1. To expand a crown on a punch

2. To extend crown edge on an anvil *

3. To truncate a crown on a plaster column

4. To make restamping of crown

5. To make additional preparation of chewing surface 46 tooth

148. A 38-years-old male patient addressed to the dentist for the purpose obtains the orthopedic treatment. A bite is orthognathic, deep overlapping of incisors. 11, 12, 21, 22 teeth needs to orthopedic treatment by crowns with high esthetic requirements. What crowns are expedient for using in this patient?

1. The combined stamped crowns

2. Plastic crowns

3. Metal-cast vestibular facing ceramic crowns *

4. Metal-cast completely covering plastic crowns

5. Metal stamped crowns

149. What low-fusing porcelain mass is used for making porcelain crown?

1. Biodent

2. Duceram*

3. Vitadur

4. All of the above

5. None of the above

150. Dental hard tissues in orthopedic treatment by silicate ceramic crown should be prepared into:

1. 2 mm*

2. 0,8 mm

3. 1,7 mm

4. All of the above

5. None of the above

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