| 摘要 |
PURPOSE:To easily, quickly and exactly execute polishing, grinding, medical treatment, etc., of a tooth without being obstructed by the inside face of a cheek by forming a concave lens surface for irradiating the inside of a mouth on the outside face of a rear face plate, and forming a concave frame lens surface by an elastic member formed by performing a mirror surface forming film, and reflecting a light beam which goes into the open oral cavity from the outside by the mirror reflecting surface. CONSTITUTION:The subject opener is formed in a U-shape by a front face plate 1, a rear face plate and a hook-shaped plate 3 placed roughly horizontally and in the center part of the front end of the front face plate 1, a handle part 5 of a finger set ring 4 is provided projectingly by inclining it by about 40 deg. toward the outside. When a mouth corner of one side is inserted and held by the front face plate 1 and the rear face plate 2 and the hook- shaped plate 3 is put against the mouth corner, and a patient himself puts his finger on the finger set ring 4 and draws it backward, the mouth corner of one side is opened by the hook-shaped plate 3, a cheek of one side is inserted and held form the inside and the outside by the front face plate 1 and the rear face plate 2, and the inside face of the cheek is separated from the outside face of a back tooth of one side. In this state, a light beam of an illuminating lamp for performing an operation is reflected on the concave lens surface 9 of the rear face plate, and while illuminating the outside face and the upper and the lower faces of the upper and the lower back teeth of one side, medical treatment, polishing, grinding, etc., of a tooth are executed by dental treatment tools. |
