Karnatak University 2009 B.D.S Dental Surgery , , – III : ORAL ANATOMY, HISTOLOGY AND PHYSIOLOGY - Question Paper

12) The only paranasal sinus which is large enough to be evident radiographically, at the time of birth

a) Maxillary sinus

b) Sphenoid sinus

c) Ethmoid sinus

d) Frontal sinus


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13) Normal serum calcium level is

a) 9-11 gm%

b) 9-11 mg%

c) 3-5 mg%

d) 14-18 mg%

14) The tooth that may show a 'Y' shaped configuration of developmental grooves

a) Maxillary second premolar
b) Mandibular 1st premolar

c) Mandibular second premolar
d) Mandibular second molar

15) Only permanent tooth that indicates longer mesial slope from the facial aspect

a) Canines

b) Maxillary 1st premolar

c) Mandibular 1st premolar

d) Maxillary 2nd premolar

PART – B
5. Discuss the different differences ranging from deciduous and permanent dentition. 10
6. Describe with diagram the histology of pulp. Add a note on its functions. 10
7. Write briefly on the subsequent : (3×5=15 Marks)

a) Enamel rods

b) Ligaments of TMJ

c) Differences ranging from cellular and acellular cementum.

8. Multiple option ques. : (1×15=15 Marks)

1) The cytoplasmic organelle that contribute material that forms a permeability barrier in keratinized epithelium is

a) Od land bodies b) Keratinosomes
c) Golgi complex d) Desmosomes


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2) ______________ forms a protective covering for newly formed enamel till the tooth erupts.

a) Nasmith's membrane

b) Enamel pellicle

c) Reduced enamel epithelium

d) Dental lamina

3) First permanent tooth erupts into the oral cavity at about

a) 8 - nine years

b) 6 years

c) 4 - five years

d) 7 - eight years

4) Linear elevation obtained extending from the cusp tip to the cervical region of a tooth, on buccal aspect is called as

a) Cervical ridge

b) Triangular ridge

c) Cuspal ridge

d) Buccal ridge

5) The largest cusp in permanent maxillary 1st molar is

a) Mesiolingual cusp

b) Mesiobuccal cusp

c) Distolingual cusp

d) Distobuccal cusp

6) Uncalcified or hypocalcified structure obtained in fully mineralized dentin matrix is

a) Inter tubular dentin

b) Interglobular dentin

c) Intra tubular dentin

d) None of the above


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7) Incremental lines of dentin are called as

a) Incremental lines of Retzius

b) Incremental lines of von Ebner

c) Incremental lines of von Korffs

d) Incremental lines of Owen

8) Cell free zone of pulp is also called as

a) Zone of Rashkow

b) Zone of Weil

c) Zone of Hopewell Smith

d) Zone of Retzius

9) The kind of cementum that is primarily involved in attachment of tooth to alveolar bone

a) Acellular cementum

b) Cellular cementum

c) Intermediate cementum

d) Mixed stratified cementum

10) Most of the cellular processes of cementocytes are directed towards the

a) Dentinocemental junction

b) Periodontal ligament

c) Cervical part of the tooth

d) To all the above mentioned direction

11) ______________ fibers are also celled as interdental ligament.

a) Intermediate fibers

b) Inter radicular fibers

c) Trans alveolar fibers

d) Trans-septal fibers


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12) The perforations current in interdental and inter radicular septa which allows the passage of blood vessels and nerves are called

a) Canal of Zuckerkandl and Hirschfeld

b) Haversian canal

c) Volkmann's canal

d) None of the above

13) Main kind of inter cellular junctions obtained ranging from epithelial cells of oral mucosa is

a) Hemidesmosomes

b) Desmosomes

c) Gap junctions

d) Tight junction

14) The cells that may be observed as an age change among the salivary duct lining cells, which contain coarse eosinophilic granular cytoplasm

a) Asterocytes

b) Myoepithelial cells

c) Goblet cells

d) Oncocytes

15) Odontoclasts are capable of resorbing

a) Only dentin

b) Dentin and cementum

c) Only cementum

d) Enamel, dentin and cementum

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