“…Er:YAG lasers have less thermal effects 10 , cause no carbonisation, 15 improve sealing between dentin and epoxy sealer 10 , have fewer cracks, chippings, and burning effects when compared to Nd:YAG, CO 2 lasers 1,7-9 or ultrasonic tips. 2 Lasers produce smoother resected root surfaces 1,6 , less vibration -1.5 W power 11 , and less chipping compared to diamond burs 4 but are inferior to carbide burs. 6 Some authors believe that the use of burs is the best way to perform periapical surgery 5 because it leads to less inflammation 13 , has more bone fill, and takes less time.…”