Questions
RERMOVING SMEAR LAYER DURING ENDODONTIC TREATMENT BY DIFFERENT TECHNIQUES- A INVITRO STUDY. A CLINICAL CASE- ENDODONTIC TREATMENT WITH ER: YAG LASER
Questions
The smear layer is packed into the dentin tubules at a depth of:
qa. 1. Less than 40 µ; qb. Up to 40 µ; qc. 1-2 µ; qd. Only at the infected areas on the root canal.
To remove the smear layer after endodontic preparation you have to:
qa. Clean the root canal wall with bigger file in order to remove the smear layer; qb. Use irrigation solution like 17 % EDTA in order to remove the smear layer; qc. Use all kinds of lasers to remove smear layer; qd. Use LAI( Laser Activated Irrigation) Er: YAG laser with 17 % EDTA to remove smear layer.
Lasers pulsed infrared cause cavitation-bubbles and pressure waves within the root canal space when combined with irrigants. Which laser you will prefer:
qa. CO2 laser; qb. Er: YAG laser; qc. Diode laser; qd. Blue laser.
The position of the laser tip inside the root canal is important: chose the correct answer:
qa. The irrigation solution can penetrate through the apical constriction when the laser tip was close to the apical area; qb. To have efficient effect the laser tip should be insert till the apical area; qc. You should use the laser tip as much as it penetrates into the root canal; qd. You should initiate the laser tip before treatment.
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