Dr. Estrella serves as the Director of the Pediatric Dentistry Service of the Department of Oral & Maxillofacial Surgery Hospital Dentistry Clinic. She is in a full time faculty, clinical track position, and practices in the School of Dentistry Pediatric Dentistry Faculty Practice. She is involved in teaching at the undergraduate, graduate pediatric dentistry and hospital dentistry clinic. Her interests include dentistry for children with special health care needs, with a particular focus on clinical studies among children with autism, craniofacial anomalies and the medically compromised population. She serves as a consultant on the American Academy of Pediatric Dentistry (AAPD) Council of Clinical Affairs and is an active member of the AAPD, Kenneth Easlick Society and the Philippine Dental Association.