anyone knows the answers to the 5th and the 7th questions...........???
ans-1[i guess becoz distally there is a deep concavity just above the cervical line in LI ][/QUOTE]jimmyhere said:]1. Maxilalry facial mandibular lingural cusps require sifficient occlusal length and horizontal pverlap for
1. esthetics
2. centric stability
3. chewing efficiency ANS: 4
4. soft tissue protection
5. none of the above
these r the guiding cusps which protest the adjacent tissues from damage[max facial -the cheeks and the mand lingual the tongue]
2.In an ideal occlusal relationship, when an exaggerated Bennet component is present in lateral jaw movement, it will have it's greatest potential for interferance with the
1. Mesiodistal positioning of cusp tips
2. buccolingual positionaing of cusp tips
3. position of the central fossa
4. depth of the distal fossa
ans-1[given in decks]
3. The Dryopithecus pattern shows up most clealy in the
1. maxilalry canine
2. maxillary third molar
3. mandibular first molar
4. mandibular first premolar
ans-3[it is the Y5 dental pattern for 5 cuped teeth so 1st molar]
4. Dentin "islands" are frequently found in the root canals of which of the following permanent teeth?
a. Maxillary lateral incisor
b. Maxillary second premolar
c. Maxillary first molar
d. Madibular canine
e. Mandibular second premolar
1. a and d
2. b and c
3. b and d
4. c and e
5. d and e
ans-3[these r found in teeth with wide faciolingual but narrow MD dimension of root canals]
5.Which of the following is true regarding maxillary molars?
1. Are set somewhat lingual to the premolars
2. Show a convergence of their buccal surfaces mesially
3. By their arrangement and design allow room for the powerful masseter muscle. ANS: 3
4. Curve inward more sharply from the medical plance on the buccal than to do the mandibular molars.
[this one i still dont get it]
6. the terminal hinge axis is the center of rotation for the mandiable when it opens from which from the following positions
1. Rest
2. Edge-to-edge
3.Retruded contact
4.Maximum protrusive
5. Maximum intercuspal
ans-3or centric relation [CR-from this position the condyles open&close without translation and hinge axis movement is movement without translation]
7.When viewed occlusualy, the aveoli of which of the following groups of teeth tend to be aligned nearest to a straight line?
1. Right and left maxilary central and lateral incisors
2. Right and left mandibular central and alteral incisors
3. Maxillary and left mandibular central and lateral incisors
4.All amxillary first premolars and first molars
5.All mandibular anterior teeth.
ans-2[why no idea]
8.Which of the following is NOT normally an alterable factor in the articulation of teeth?
1. incisal guidance
2. Postural position
3. compensating curve
4. cuso-fossa relationship
5.posterior tooth morphology
ans-2
9. Which of the following BEST descibes the location of the cervical line on a mandibular lateral incisors
a. On the distal, it is more apical than on the mesial
b. On the lingual, it is more incisal than on the facial
c. On the mesial, it is more apical than on the distal
d. on the facial, it is more apical than on the lingual
e. On the facial and the lingual, it is at the same level