Dental Chan Borey

15. The mineralization of the crown of permanent maxillary central incisor is completed at the age of?

σ� 4-5 years

σ� 2-3 years

σ� 1-2 years

σ� 7-8 years

26. When we observe from buccal aspect, in permanent mandibular first molar, the point of furcation of the two roots is located approximately?

σ� 3mm below the cervical line

σ� 4mm below the cervical line

σ� 5mm below the cervical line

σ� 2mm below the cervical line

29. When we see from the buccal aspect in the permanent maxillary first molar, the point of furcation of the two buccal roots is located approximately?

52. In permanent maxillary central incisor, root completion takes place after birth at the age of:

7 years

8 years

10 years

13 years

53. The first evidence of calcification of permanent maxillary lateral incisor appears at the age of :

σ� 10-12 month intrauterine life

σ� 1 year after birth

σ� 2 year after birth

σ� 6 month after birth

54. How many lobes are required for the development of mandibular second premolar?

3 lobes

4 lobes

5 lobes

6 lobes

First evidence of calcification របស់ Permanent maxillary central incisor គឺៈ

3-4 months

2-3 months

4-5 years

σ� 10-11 years

Crown completion របស់ Permanent maxillary central incisor គឺៈ

3-4 months

2-3 months

4-5 years

σ� 10-11 years

Eruption របស់ Permanent maxillary central incisor គឺៈ

7-8 years

2-3 months

4-5 years

σ� 10-11 years

First evidence of calcification របស់ Permanent maxillary lateral incisor គឺៈ

4-5 years

8-9 years

2-3 months

10-12 months

Root completion របស់ Permanent maxillary lateral incisor គឺៈ

4-5 years

11 years

8-9 years

10-11 years

Enamel completed របស់ Permanent maxillary lateral incisor គឺៈ

4-5 years

11 years

8-9 years

10-11 years

Root completion របស់ Permanent mandibular central incisor គឺៈ

8-9 years

7-8 years

10 years

11 years

Eruption របស់ Permanent mandibular central incisor គឺៈ

8-9 years

7-8 years

10 years

6-8 years

Crown completion របស់ Permanent mandibular central incisor គឺៈ

3-4 years

6-8 years

4-5 years

σ� 10 years

First evidence of calcification របស់ Permanent maxillary canine គឺៈ

3-4 months

2-3 months

4-5 months

5-6 months

Root completion របស់ Permanent maxillary canine គឺៈ

12-14 years

11 years

11-12 years

σ� 13-15 years

Eruption របស់ Permanent maxillary canine គឺៈ

7-8 years

σ� 9-10 years

11-12 years

12-13 years

Crown completion របស់ Permanent maxillary canine គឺៈ

7-8 years

σ� 9-10 years

4-5 years

6-7 years

First evidence of calcification របស់ Permanent mandibular canine គឺៈ

1-2 years

2-3 months

5-6 months

4-5 months

Root completion របស់ Permanent mandibular canine គឺៈ

σ� 12 - 14 years

σ� 11 years

11-12 years

σ� 13-15 years

Eruption របស់ Permanent mandibular canine គឺៈ

7-8 years

σ� 9-10 years

10-11 years

6-7 years

Crown completion របស់ Permanent mandibular canine គឺៈ

7-8 years

σ� 9-10 years

5-6 years

6-7 years

First evidence of calcification របស់ Permanent first maxillary premolar គឺៈ

1-2 years

3-4 years

1.5 - 1.75 years

1.5-2.75 years

Root completion របស់ Permanent maxillary first premolar គឺៈ

σ� 12 - 13 years

σ� 12 years

11-12 years

σ� 13-15 years

Eruption របស់ Permanent maxillary first premolar គឺៈ

7-8 years

σ� 9-10 years

10-11 years

12-13 years

Enamel completion របស់ Permanent maxillary first premolar គឺៈ

σ� 4 -5 years

σ� 5 - 6 years

σ� 11 - 12 years

σ� 10 - 11 years

Which of the following sequence of eruption of permanent teeth is normally seen in the maxilla ?

σ� 1, 6, 2, 4, 3, 5, 7, 8

σ� 1, 6, 2, 3, 4, 5, 7, 8

σ� 6, 1, 2, 3, 4, 5, 7, 8

σ� 6, 1, 2, 4, 3, 5, 7, 8

Initial of calcification របស់ Permanent second maxillary premolar គឺៈ

A. 1-2 years

B. 3-4 years

C. 1.5 - 1.75 years

D. 2-2.5 years

Root completion របស់ Permanent maxillary second premolar គឺៈ

σ� 12 - 13 years

σ� 12 years

σ� 12-14 years

σ� 13-15 years

Eruption របស់ Permanent maxillary second premolar គឺៈ

σ� 11 -12 years

σ� 10-12 years

σ� 12 - 13 years

σ� 10 - 11 years

Completion of crown របស់ Permanent maxillary second premolar គឺៈ

σ� 6-7 years

σ� 5 - 6 years

σ� 11 - 12 years

σ� 10 - 11 years

Initial of calcification របស់ Permanent mandibular first premolar គឺៈ

A. 1 ¾ - 2 Years

B. 3-4 years

C. 1.5 - 1.75 years

D. 2-2.5 years

Crown completion របស់ Permanent mandibular first premolar គឺៈ

A. 6 Years

B. 3-4 years

C. 5 – 6 Years

D. 2-2.5 years

Eruption របស់ Permanent mandibular first premolar គឺៈ

12 Years

6-7 years

10 - 12 Years

7 years

194. Root completion របស់ Permanent mandibular first premolar គឺៈ

σ� 12 Years

σ� 13 Years

σ� 10 - 12 Years

σ� 12- 13 years

202. Initial of calcification របស់ Permanent mandibular second premolar គឺៈ

1 ¾ - 2 Years

2-2.5 years

1.5 - 1.75 years

2 ¼ - 2 ½ years

Crown completion របស់ Permanent mandibular second premolar គឺៈ

6 Years

6-7 years

5 – 6 Years

12 years

Eruption របស់ Permanent mandibular second premolar គឺៈ

12 Years

6-7 years

11 - 12 Years

7 years

205. Root completion របស់ Permanent mandibular second premolar គឺៈ

σ� 12 Years

σ� 13-14 years

σ� 10 - 12 Years

σ� 12- 13 years

The combined mesiodistal width of the three mandibular molars on one side make up :

σ� 51% of the mesiodistal dimension of their quadrant

σ� 51% of the mesiodistal dimension of mandibular quadrant

σ� 51% of the mesiodistal dimension of their arch

σ� 51% of the mesiodistal dimension of their mandibular arch

Initial of calcification របស់ Permanent maxillary first molar គឺៈ

3 - 4 Years

2-2.5 years

At birth

2 ¼ - 2 ½ years

Crown completion របស់ Permanent maxillary first molar គឺៈ

6 Years

3-4 years

5-6 Years

7-8 years

Eruption របស់ Permanent maxillary first molar គឺៈ

At birth

6-7 years

5 - 6 Years

6 years

Root completion របស់ Permanent maxillary first molar គឺៈ

σ� 6 Years

σ� 5-6 years

σ� 10 - 11 Years

σ� 9- 10 years

Initial of calcification របស់ Permanent maxillary second molar គឺៈ

At birth

2-2.5 years

3 years

3 - 3 ½ years

Crown completion របស់ Permanent maxillary second molar គឺៈ

12 Years

3-4 years

5-6 Years

7-8 years

Crown completion របស់ Permanent maxillary second molar គឺៈ

12 Years

σ� 3-4 years

5-6 Years

7-8 years

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