MDS PREP

No. 10 size file with a taper 0.02 mm has extended 1.0 mm past the apical foramen. Which of the following occurs
1. It opens apical foramen to a minimum diameter of 0.12 mm
2. It reduces the percentage of change from a No. 10 file to a No. 270 file by 50 %
3. It eliminates natural constrictions and results in overfilling
4. All of the above

Endodontics Answer: 1

Histology of pulp inadverently exposed during cavity preparation of deep carious lesion shows
1) Acute inflammatory cells at site of exposure below which chronic inflammatory cells are there on normal pulp
2) Only acute inflammatory cells at site of exposure on a normal pulp
3) Predominantly chronic inflammatory cells at site of exposure
4) None of the above

Endodontics Answer: 1

Endodontic therapy is said to be successful when following changes occur in periapical region
1) Formation of cementum
2) Regeneration of alveolar bone
3) Regeneration of PD ligament
4) All of the above

Endodontics Answer: 4

Angle of tip of an endodontic instrument
1. 75 + 15
2. 75 - 15
3. 80 degrees
4. None of the above

Endodontics Answer: 4

Shape of canal after bimechanical preparation should be
1. Walls of canal should be parallel with divergent wall of apical seat
2. Walls of canal should be well tapered with parallel walls of apical seat
3. Walls of canal should be divergent towards apical seat
4. None of the above

Endodontics Answer: 2

Concentration of EDTA utilised during biomechanical preparation is
1. 20 % at pH 704
2. 15 % at pH 5.0
3. 15 % at pH 7.3
4. 25 % at pH 7.4

Endodontics Answer: 3

Root morphology of upper lateral incisor in most cases
1) Straight with no curvatures
2) Distolingual curvature in apical third
3) Mesiobuccal curvature in apical third
4) Mesiobuccal curvature in middle third

Endodontics Answer: 2

Which of the following weakens the endodontically treated tooth to a great extent
1) Access cavity preparation
2) Canal debridement and shaping
3) Canal obliteration
4) Dehydration of the dentinal tubules

MDS PREP

Endodontic therapy is said to be successful when following changes occur in periapical region
1) Formation of cementum
2) Regeneration of alveolar bone
3) Regeneration of PD ligament
4) All of the above

Angle of tip of an endodontic instrument
1. 75 + 15
2. 75 - 15
3. 80 degrees
4. None of the above

Shape of canal after bimechanical preparation should be
1. Walls of canal should be parallel with divergent wall of apical seat
2. Walls of canal should be well tapered with parallel walls of apical seat
3. Walls of canal should be divergent towards apical seat
4. None of the above

Concentration of EDTA utilised during biomechanical preparation is
1. 20 % at pH 704
2. 15 % at pH 5.0
3. 15 % at pH 7.3
4. 25 % at pH 7.4

Root morphology of upper lateral incisor in most cases
1) Straight with no curvatures
2) Distolingual curvature in apical third
3) Mesiobuccal curvature in apical third
4) Mesiobuccal curvature in middle third

Which of the following weakens the endodontically treated tooth to a great extent
1) Access cavity preparation
2) Canal debridement and shaping
3) Canal obliteration
4) Dehydration of the dentinal tubules

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MDS PREP

Endodontic therapy is said to be successful when following changes occur in periapical region1) Formation of cementum2) Regeneration of alveolar bone3) Regeneration of PD ligament4) All of the above

Angle of tip of an endodontic instrument 1. 75 + 15 2. 75 - 15 3. 80 degrees 4. None of the above

Shape of canal after bimechanical preparation should be 1. Walls of canal should be parallel with divergent wall of apical seat 2. Walls of canal should be well tapered with parallel walls of apical seat 3. Walls of canal should be divergent towards apical seat 4. None of the above

Concentration of EDTA utilised during biomechanical preparation is 1. 20 % at pH 704 2. 15 % at pH 5.0 3. 15 % at pH 7.3 4. 25 % at pH 7.4

Root morphology of upper lateral incisor in most cases1) Straight with no curvatures2) Distolingual curvature in apical third3) Mesiobuccal curvature in apical third4) Mesiobuccal curvature in middle third

Which of the following weakens the endodontically treated tooth to a great extent1) Access cavity preparation2) Canal debridement and shaping3) Canal obliteration4) Dehydration of the dentinal tubules

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Endodontic therapy is said to be successful when following changes occur in periapical region
1) Formation of cementum
2) Regeneration of alveolar bone
3) Regeneration of PD ligament
4) All of the above

Angle of tip of an endodontic instrument
1. 75 + 15
2. 75 - 15
3. 80 degrees
4. None of the above

Shape of canal after bimechanical preparation should be
1. Walls of canal should be parallel with divergent wall of apical seat
2. Walls of canal should be well tapered with parallel walls of apical seat
3. Walls of canal should be divergent towards apical seat
4. None of the above

Concentration of EDTA utilised during biomechanical preparation is
1. 20 % at pH 704
2. 15 % at pH 5.0
3. 15 % at pH 7.3
4. 25 % at pH 7.4

Root morphology of upper lateral incisor in most cases
1) Straight with no curvatures
2) Distolingual curvature in apical third
3) Mesiobuccal curvature in apical third
4) Mesiobuccal curvature in middle third

Which of the following weakens the endodontically treated tooth to a great extent
1) Access cavity preparation
2) Canal debridement and shaping
3) Canal obliteration
4) Dehydration of the dentinal tubules