METHOD FOR ECHO-OSTEOMETRY OF JAWS IN RETENTION PERIOD OF ORTHODONTIC TREATMENT

摘要

FIELD: medicine.;SUBSTANCE: ultrasonic wave transmission velocity is measured within the osseous inter-root septums by means of intra-oral cone-shaped sensors fixed in a silicone impression. The sensors are placed in an intersection point of the mid-length of the inter-root septum and a conditional line drawn on an upper jaw 3mm above, and on a lower jaw 3mm below a gingival line.;EFFECT: method enables obtaining the objective data of the risk of recurrences following the orthodontic treatment by the use of the cone-shaped sensors positioned directly in the oral cavity.;3 dwg, 2 tbl, 2 ex