TY  - RPRT
TI  - Vertical extrusion using a removable orthodontic appliance.
AU  - B J Ries
AU  - G K Johnson
AU  - L G Nieberg
PY  - 1988
DO  - 10.14219/jada.archive.1988.0310
UR  - https://pubmed.ncbi.nlm.nih.gov/3288668/
ID  - 3288668
ER  -