| 摘要 |
<p>This invention is a improved retractor apparatus for conducting orthodontic procedures in a dry field, the retractor including a first arm portion (12) for extending along the outer surface of a patient's cheek that can be grasped by the orthodontist performing the procedure; a second lower lip depressor portion (22) concavely formed for pressing against the lower lip as the orthodontist grasps the handle portion, a third cheek retractor portion (24) extending from the bridge (lip retractor) portion into the mouth of the patient and formed in a biconvex fashion to curve along the inner surface of thecheek of the patient; an upper lip retractor portion (29) that retracts, and elevates the upper lip as the apparatus is manipulated by the dentist; a bridge member situated at the confluence of the first arm, (handle) portion; the second arm (lower lip depressor) portion; the third arm (cheek retractor) portion; and the fourth arm (upper lip retractor) portion.</p> |
