TY  - RPRT
TI  - Perforations in human teeth with threaded retentive pins: a scanning electron microscopy study.
AU  - J F Collins
AU  - P J Heins
AU  - W Fischlschweiger
PY  - 1984
DO  - 10.1016/0022-3913(84)90438-4
UR  - https://pubmed.ncbi.nlm.nih.gov/6148415/
ID  - 6148415
ER  -