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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