Arora Shipra Au. Evaluation of the effect of er,cr ysgs laser, ultrasonic unit and curette on root surface profile using surface analyser and scanning electron microscope Arora Shipra Au.; Dr. Arundeep Kaur Lamba Gu. - 2012 - 76 p. cm. Standard No.: 5140 Source: Theses Subjects--Topical Terms: DENTISTRY