A. Myelin degeneration
B. Axonal degeneration
C. Mitosis of schwann cell
D. Sprouting
Related Mcqs:
- The contact area on the distal side of a maxillary first premolar is located _____________?
A. Middle of the middle third with buccal embrasure wider than lingual
B. Middle of the middle third with lingual embrasure wider than buccal
C. Litter cervical to the junction of occlusal and middle third of the crown with wide occlusal embrasure
D. Cervical third with buccal embrasure wider than lingual embrasure - Which anterior teeth have both mesial and distal contact areas of at the incisal third____________?
A. Mandibular centrals
B. Mandibular laterals
C. Both A and B
D. None of the above - The contact area on the distal surface of a maxillary first premolar should be placed in________________?
A. Middle 3rd of proximal surface with lingual embrasure greater than the facial embrasure
B. Occlusal 3rd of proximal surface with the lingual embrasure greater than facial embrasure
C. Occlusal 3rd of proximal surface with facial embrasure greater than lingual embrasure
D. Middle 3rd with facial embrasure greater than the lingual embrasure - Distal contact of upper first premolar is________________?
A. Lower than mesial contact area
B. Little cervical to junction of occlusal and middle third of crown
C. Higher than mesial contact area
D. A and B - Which of the following premolars has a mesial marginal ridge more cervical than the distal marginal ridge________________?
A. Maxillary 1st premolar
B. Maxillary 2ndpremolar
C. Mandibular 1st premolar
D. Mandibular 2nd premolar - On which of the following permanent teeth is it most difficult to distinguish between mesial and distal aspects ?
A. Maxillary central incisor
B. Mandibular central incisor
C. Mandibular lateral incisor
D. Mandibular second premolar - What is the functional form of anterior teeth from the mesial or the distal aspect ?
A. Rhomboidal
B. Trapezoidal
C. Elliptical
D. Wedge- shaped - If the pulp of a single rooted tooth canal were triangular in cross section with the base of the triangle located facially and the apex lingually with a longer mesial side than distal side; the tooth most likely is_____________?
A. Maxillary central incisor
B. Maxillary second premolar
C. Mandibular lateral incisor
D. Mandibular central incisor - Greater crown bulk distal to the faciolingual bisecting plane of a tooth is most typical of the mandibular_______________?
A. Central incisor
B. Lateral incisor
C. Canine
D. Second premolar (AIPG – 97, Man-95) - Mesial slope of buccal cusp is longer than distal slope in_________________?
A. Maxillary 2nd premolar
B. Maxillary 1st premolar
C. Mandibular canine
D. Maxillary canine
