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NEET MDS Quiz - Practice Test
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Practice Test

Endodontics - 3 Questions

1
Endodontics
Which one of the following is used to bleach a discoloured, endodontically treated tooth?
1) Ether
2) Chloroform
3) Suproxol
4) Sodium hypochlorite

📝 Explanation:

Suproxol, a 30-35% hydrogen peroxide solution, is a bleaching agent used in non-vital bleaching for discolored, endodontically treated teeth. It is typically applied internally to the pulp chamber, sometimes combined with heat, to oxidize the staining agents within the tooth structure.

2
Endodontics
The disadvantage of glass bead sterilizer
1) Only small instruments can be sterilized
2) Variable temperature
3) Does not produce effective heat for sterilization
4) All of the above

📝 Explanation:

Explanation: One of the main disadvantages of glass bead sterilizers is that they are limited to sterilizing only small instruments due to the size of the sterilization chamber. Larger instruments cannot be effectively sterilized in this type of device.

3
Endodontics

A patient had undergone pulpectomy 1 yr back on a maxillary premolar. Tooth was restored with post crown. Now the tooth is asymptomatic but increase in periapical radiolucency is noted. You would like to do 
1. Do not treat
2. Apical curettage only
3. Apical curettage apicectomy
4. Conventional root canal treatment

📝 Explanation:

When conventional endodontic treatment has failed (evidenced by increasing periapical radiolucency) and retreatment is not feasible due to a post crown, apical curettage with apicectomy is indicated to remove infected tissue and provide retrograde seal.

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