The mandible and the upper gnathal bow expander and the gnathal integral returning/repeating device which include the pivot type installation boss

摘要

(57) Abstract The reform instrument (1) the mandibular bow expander which is connected mutually with the adjustment possible connector of pair (3) and has the upper gnathal bow expander (5). The upper jaw and the mandibular bow expander have, respectively the front reform band (13) and the rear reform band (41) the boss who makes the connection with the connector and the dentition bow expander possible (15 and 17) possess the reform band. The connector includes, the expansion possible pipe fitting (7) with, penetrating into the expansion possible pipe fitting, the rod which it expands (105) with. The expansion possible pipe fitting, in order to connect the connector to the rear reform band of the upper gnathal bow, has the installation section which is adapted, in first end. It possesses the installation section to which the rod was adapted, in order to connect to the front reform band of the mandibular bow, adjoins to the second end of the expansion possible pipe fitting. The rear tube of air (103) with, the front tube which is connected to nested system to that (101) it possesses each pipe fitting. It is the hollow body where the front tube, the screw thread is attached desirably outside that rear section. The rear tube has had the hole, it is the hollow body where the screw thread is attached inside the front part. The tap rear is the size which receives the front tube, 2 tubes are the screw and it has reached the point where it connects. In the rear tube, there is a hole where the tool which can adjust the position of the rear tube for the front tube is received, it is possible to change the total length of the retreat expansion possible pipe fitting. Furthermore the front tube the graduation which puts in place interval (121) has the indicator of form, is designed in such a way that length of the connector is understood. The pivot type installation boss who is improved (300), the mandibular bow expander (3) and the upper gnathal bow expander (5) the front or the rear reform band above (13) the installation section is offered. The pivot type installation boss possesses the based casing which in the reform band it is soldered or is welded, or (302). The screw (33) being screwed in inside the based casing, it is locked. The based casing (302) the arc line (W) it possesses the open part for insertion. The open part (308), when the arc line (W) being inserted, it is possible to give the kind of angle which helps the dental root angular adjustment beforehand.