TY - JOUR T1 - Microabrasion of teeth with discoloration resembling hypomaturation enamel defects: four- year follow up A1 - Ashkenazi,M. A1 - Sarnat,H. JO - Journal of Clinical Pediatric Dentistry VL - 25 IS - 1 SP - 29 EP - 34 SN - 1557-5268 Y1 - 2000 ER -