| 摘要 |
A facial frame surrounds a greater arcuate portion of the patient's face, than has been used heretofore. The frame includes fasteners for a dental dam, preferably made from a thin rubber sheet. The frame has fasteners which are oriented so that the dam may be attached to them after it has been installed over the patient's teeth. Other fasteners are on the frame and positioned so that dental tape may be used to tie it in place about a patient's head. The geometry is such that the dental dam does not restrict either the working or the visible area of the patient's mouth.
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