| 摘要 |
PROBLEM TO BE SOLVED: To prevent the accidental swallow of a foreign matter by setting a mouth net having a net adhered to an elastic frame in an oral cavity and receiving, the foreign matter generated during odontotherapy. SOLUTION: An elastic frame part in Fig. 2-1 and the mouth net comprising a net part in Fig. 2-2, are designed thinking that a patient would have accidentally swallowed a removed crown during cure of a bad tooth, but the danger of the accidental swallow can be prevented when a net-like material is previously put in the mouth. There is the danger of accidentally swallowing the foreign matter generated during the odontotherapy. The mouth net is set in the oral cavity to prevent the accidental swallow of the foreign matter.
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