MDS PREP
An endodontist failed to obturate an accessory canal while obturating main canal. Immediate treatment
1) No treatment, observe periodically
2) Surgical expose and retrofill
3) Retrieve and reobturate
4) Apicetomy and retrofill
Endodontics
Answer: 1
The principal cone of gutta-percha used for condensation should
1) Fit exactly at apex
2) Have a definite apical seal
3) Fit loosely in the canal
4) Be 2 mm from the apex
Endodontics
Answer: 2
From an endodontist point of view, maxillary first and second premolars
1) Have same number of roots and canals
2) Have similar crown and root form
3) May vary in root form & canals
4) All of the above
Endodontics
Answer: 3
Which of the following is insensitive to percussion
1) Chronic periodontitis
2) Acute periapical abscess
3) Pulpal hyperaemia
4) Acute periodontal abscess
Endodontics
Answer: 1
Most commonly used solution for irrigation of root canals
1. EDTA
2. Sodium hypochlorite
3. Hydrogen peroxide
4. Saline solution
Endodontics
Answer: 2
Which of the following is associated with a vital pulp
1) PA cyst
2) PA granuloma
3) Apical abscess
4) Condensing osteitis
Endodontics
Answer: 4
After treatment of a periapical lesion, bone filling can be noticed radiographically after
1. 8-12 months
2. 2-6 months
3. 1-2 months
4. 24 months