G1: no ultrasonic vibration application (control group); G2: tip of the ultrasonic device was positioned perpendicularly to core surface and close to the incisal edge (Fig. 1A); G3: tip of the ...
G1: no ultrasonic vibration application (control group); G2: tip of the ultrasonic device was positioned perpendicularly to core surface and close to the incisal edge (Fig. 1A); G3: tip of the ...
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