Test on Root Canal Treatment: Single-Rooted Teeth

Question 1: During the final restoration, acid etch is applied before the bond.

A. Ano

B. Ne

Explanation: The study materials list the final restoration sequence including 'Acid etch (20 sec)', followed later by 'Bond +Airblow (little)', indicating acid etch precedes bond application.

Question 2: Is Kofferdam applied as the initial step in Root Canal Treatment?

A. Ano

B. Ne

Explanation: The study materials explicitly list "1. Kofferdam" as the first procedure in Root Canal Treatment for single rooted teeth.

Question 3: Which statement accurately describes the correct application of the Lentulus Spiro-file, according to the provided study materials?

A. It is operated with a reduced speed hand piece, rotating clockwise.

B. The size used is two sizes larger than the Master Cone.

C. Both water and air should be kept on during its operation.

D. Immediately after use, it must be cleaned with an alcohol swab.

Explanation: The study materials state that the Lentulus Spiro-file is used "with reduced speed hand piece" and with "clockwise direction rotation," making option 0 correct. It also specifies "danach Lentulus gleich mit Alkoholtupfer reinigen" (clean immediately with an alcohol swab), making option 3 correct. Option 1 is incorrect because the size is "2 sizes down to Master Cone," not larger. Option 2 is incorrect because it explicitly warns to "turn water + air off !!!!".

Question 4: According to the study materials, what is the specific final flushing sequence recommended to address the smear layer during root canal treatment in single-rooted teeth?

A. Flushing with NaOCl alone

B. Flushing with EDTA followed by Saline

C. Flushing with Saline alone

D. Flushing with only EDTA

Explanation: The study materials specify that the last flush should be EDTA because of the smear layer, followed by Saline.

Question 5: During the root canal filing process, is NaOCl the final flush explicitly used to remove the smear layer?

A. Ano

B. Ne

Explanation: The study materials indicate that the 'last flush' is EDTA (because of smear layer) + Saline. NaOCl is mentioned for earlier flushing during filing, but not as the final flush specifically for the smear layer.