TY  - RPRT
TI  - Tooth bleaching: its effect on oral tissues.
AU  - L V Powell
AU  - D J Bales
PY  - 1991
DO  - 10.14219/jada.archive.1991.0310
UR  - https://pubmed.ncbi.nlm.nih.gov/1800542/
ID  - 1800542
ER  -