| 摘要 |
<p>A device for retaining a dental dam (12) positioned in the mouth of a patient comprises first and second heads (20); an elastomeric web (22) connecting the first head to the second head; the elastomeric web (22) having a first cross-sectional area at relaxation, and a second cross-sectional area at elongation of lesser dimension than the first, the second cross-sectional area being interposed between a pair of adjacent teeth (38), and over the dam in position with respect to the teeth, wherein the second cross-sectional area expands toward the first cross-sectional area and forms an elastomeric wedge between the teeth to retain the dam.</p> |
