TY  - RPRT
TI  - [Alveolar bone changes after initial preparation observed by subtraction radiography].
AU  - T Mera
AU  - T Okano
AU  - I Ishikawa
PY  - 1985
DO  - 10.2329/perio.27.902
UR  - https://pubmed.ncbi.nlm.nih.gov/3914527/
ID  - 3914527
ER  -