| 摘要 |
An oral rehabilitation device for helping patients to expand oral cavity includes a body for prying the upper and lower jaws open and at least one pressure-resistant blade held in the body to expand the oral cavity to an extent desired. The body may also form a support section at one end to contain an expansion element inside. The expansion element has restoration force which couples the expansion force of the support section may further expand oral cavity to an extent desired for achieving oral rehabilitation object.
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