| Answer | Crossword Clue |
|---|---|
| ZIRCONIA | Metal oxide in dental crowns |
| bitewings | A dental film for X-raying the crowns of upper and lower teeth simultaneously and that is held in place by a tab between the teeth |
| rouge | red powder consisting essentially of ferric oxide used in polishing glass, metal, or gems and as a pigment |
| anodizing | Coat (a metal, esp. aluminum) with a protective oxide layer by an electrolytic process in which the metal forms the anode |
