A Orthognatic maxilla and orthognathic mandible

B Prognathic maxilla and orthognathic mandible

C Orthognathic maxilla and retrognathic mandible

D Retrognathic maxilla and retrognathic mandible

A Host resistance

B Virulence of bacteria

C Dentinal Fluid flow

D Pulp vitality

A Primary roots show less accessory and lateral canals

B Primary roots resorb more easily

C Primary roots are shorter

D None of the above

A Digital tactile sense

B Apical periodontal sensitivity

C Electronic apex locator

D All of the above

A 20 mg doxycycline

B 60 mg doxycycline

C 80 mg doxycycline

D 150 mg doxycycline

A 65

B 35

C 45

D 55

A Minimal enlarged apical foramen

B Shape of the canal can be changed

C Use of 3-5 times larger than first binding file

D Original canal curvature should be altered to make it compatible with obturating material

A Mandibular 1st premolar

B Maxillary 1st premolar

C Mandibular 2nd premolar

D Maxillary 2nd premolar

A Calcium hydroxide + Iodoform.

B Iodoform+ calcium hydroxide + menthol.

C Iodoform + camphor + parachlorophenol + Menthol.

D Parachlorophenol + Camphor + menthol.

A Unpaired test

B ANOVA

C Chisquare

D Coefficient of variance