TY - RPRT TI - Initial tissue behavior during apical root resorption. AU - K Reitan PY - 1974 DO - 10.1043/0003-3219(1974)044<0068:itbdar>2.0.co;2 UR - https://pubmed.ncbi.nlm.nih.gov/4520953/ ID - 4520953 ER -