| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To allow an operator to get close to the oral cavity of a patient as possible in order to perform a more accurate dental treatment by narrowing the width of a shoulder section of a backrest of a dental treatment chair. <P>SOLUTION: The dental treatment chair has the backrest 12 and a contour seat 13. The backrest 12 can be erected and flattened with respect to the contour seat 13. The backrest 12 has backrest supports B<SB>R</SB>and B<SB>L</SB>extending to both sides for supporting the upper arms of a patient. When performing a dental treatment on a lying patient by flattening the backrest 12, the arms of the patient are supported by the backrests B<SB>R</SB>and B<SB>L</SB>. Because the width W of the shoulder section of the backrest 12 can be narrowed in such a configuration, the operator can get more close to the oral cavity of the patient. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
