TY  - RPRT
TI  - Ensuring retention for crowns and fixed prostheses.
AU  - Gordon J Christensen
PY  - 2003
DO  - 10.14219/jada.archive.2003.0293
UR  - https://pubmed.ncbi.nlm.nih.gov/12892452/
ID  - 12892452
ER  -