Question 108 · LDEK · Ergonomics, asepsis and other
What kind of rubber dam retainers are recommended when the anchor tooth is partially erupted?
- A. retainers with prongs directed gingivally.
- B. winged retainers.
- C. retainers such as W2 with small jaws.
- D. retainers with classic, non-inverted prongs.
- E. retainers such as W7 with big jaws.
Hint
A partially erupted tooth has little clinical crown above the gingiva, so the clamp must grip below the gingival margin.
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