MDS PREP

Most frequent failures of root canal treated cases are due to�
�1. Inadequate obturation
�2. Improper sterilization
�3. Improper preparation
�4. All of the above

Endodontics Answer: 1

The most frequent failures of root canal treated cases are often due to
inadequate obturation. This can occur when the root canal filling material does
not completely fill the space or when it is not properly compacted, leaving gaps
where bacteria can persist and cause reinfection. Proper preparation and
sterilization are also crucial, but inadequate obturation is the most common
technical error leading to treatment failure.

The filling of choice for primary root canals �
�1. ZOE
�2. Calcium hydroxide
�3. Gutta-percha
�4. Chlorpercha

Endodontics Answer: 1

Zinc oxide eugenol is commonly used as a filling material for primary root canals due to its biocompatibility and sealing properties.

Which of the following is untrue of gutta-percha
1) Compatible with post dowl preparations
2) Indicated in fine canals
3) Major composition is zinc oxide engenol
4) Shrinks slightly after obturation

Endodontics Answer: 2

In primary tooth, intrusion is common because
1. Alveolar bone is pliable
2. Vertical overlap of teeth
3. Lip protection to max. anterior
4. All of the above

Endodontics Answer: 1

A cyst can be differentiated from granuloma radiographically by injecting
1. Radioopaque dyes
2. Polycrylamide gel
3. Sodium morrhaute
4. Corticosteroids

Endodontics Answer: 2

Periapical abscess is differentiated from periodontal abscess by
1. Palpation & radiographs
2. History and vitality tests
3. Radiographs and history
4. Test cavity preparation

Endodontics Answer: 2

Ca(OH) is given
1) In weeping canal
2) When there is bleeding from root canals
3) As a sterilizing agent
4) To remove or dissolve periapical debris

Endodontics Answer: 1

While root canal biomechanical preparation apical constriction is enlarged to 50 no. size instrument you would like to
1) Use reserve filling technique
2) Reinstrument with a larger instrument 1 mm short of previous preparation
3) Fit a 50 mm cone and condense carefully
4) None of the above

Endodontics Answer: 2

MDS PREP

Most frequent failures of root canal treated cases are due to�
�1. Inadequate obturation
�2. Improper sterilization
�3. Improper preparation
�4. All of the above

The filling of choice for primary root canals �
�1. ZOE
�2. Calcium hydroxide
�3. Gutta-percha
�4. Chlorpercha

Which of the following is untrue of gutta-percha
1) Compatible with post dowl preparations
2) Indicated in fine canals
3) Major composition is zinc oxide engenol
4) Shrinks slightly after obturation

In primary tooth, intrusion is common because
1. Alveolar bone is pliable
2. Vertical overlap of teeth
3. Lip protection to max. anterior
4. All of the above

A cyst can be differentiated from granuloma radiographically by injecting
1. Radioopaque dyes
2. Polycrylamide gel
3. Sodium morrhaute
4. Corticosteroids

Periapical abscess is differentiated from periodontal abscess by
1. Palpation & radiographs
2. History and vitality tests
3. Radiographs and history
4. Test cavity preparation

Ca(OH) is given
1) In weeping canal
2) When there is bleeding from root canals
3) As a sterilizing agent
4) To remove or dissolve periapical debris

While root canal biomechanical preparation apical constriction is enlarged to 50 no. size instrument you would like to
1) Use reserve filling technique
2) Reinstrument with a larger instrument 1 mm short of previous preparation
3) Fit a 50 mm cone and condense carefully
4) None of the above

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MDS PREP

Most frequent failures of root canal treated cases are due to��1. Inadequate obturation�2. Improper sterilization�3. Improper preparation�4. All of the above

The filling of choice for primary root canals ��1. ZOE�2. Calcium hydroxide�3. Gutta-percha�4. Chlorpercha

Which of the following is untrue of gutta-percha1) Compatible with post dowl preparations2) Indicated in fine canals3) Major composition is zinc oxide engenol4) Shrinks slightly after obturation

In primary tooth, intrusion is common because 1. Alveolar bone is pliable 2. Vertical overlap of teeth 3. Lip protection to max. anterior 4. All of the above

A cyst can be differentiated from granuloma radiographically by injecting 1. Radioopaque dyes 2. Polycrylamide gel 3. Sodium morrhaute 4. Corticosteroids

Periapical abscess is differentiated from periodontal abscess by 1. Palpation & radiographs 2. History and vitality tests 3. Radiographs and history 4. Test cavity preparation

Ca(OH) is given1) In weeping canal2) When there is bleeding from root canals3) As a sterilizing agent4) To remove or dissolve periapical debris

While root canal biomechanical preparation apical constriction is enlarged to 50 no. size instrument you would like to1) Use reserve filling technique2) Reinstrument with a larger instrument 1 mm short of previous preparation3) Fit a 50 mm cone and condense carefully4) None of the above

Explore by subjects

Most frequent failures of root canal treated cases are due to�
�1. Inadequate obturation
�2. Improper sterilization
�3. Improper preparation
�4. All of the above

The filling of choice for primary root canals �
�1. ZOE
�2. Calcium hydroxide
�3. Gutta-percha
�4. Chlorpercha

Which of the following is untrue of gutta-percha
1) Compatible with post dowl preparations
2) Indicated in fine canals
3) Major composition is zinc oxide engenol
4) Shrinks slightly after obturation

In primary tooth, intrusion is common because
1. Alveolar bone is pliable
2. Vertical overlap of teeth
3. Lip protection to max. anterior
4. All of the above

A cyst can be differentiated from granuloma radiographically by injecting
1. Radioopaque dyes
2. Polycrylamide gel
3. Sodium morrhaute
4. Corticosteroids

Periapical abscess is differentiated from periodontal abscess by
1. Palpation & radiographs
2. History and vitality tests
3. Radiographs and history
4. Test cavity preparation

Ca(OH) is given
1) In weeping canal
2) When there is bleeding from root canals
3) As a sterilizing agent
4) To remove or dissolve periapical debris

While root canal biomechanical preparation apical constriction is enlarged to 50 no. size instrument you would like to
1) Use reserve filling technique
2) Reinstrument with a larger instrument 1 mm short of previous preparation
3) Fit a 50 mm cone and condense carefully
4) None of the above