TY  - RPRT
TI  - Invisible lower cuspid to cuspid retainer.
AU  - R W Knierim
PY  - 1973
DO  - 10.1043/0003-3219(1973)043<0218:ilctcr>2.0.co;2
UR  - https://pubmed.ncbi.nlm.nih.gov/4571745/
ID  - 4571745
ER  -