Design method of retention device for intraoral part of orthopaedic appliance capable of enhancing orthopedic force

Abstract

The invention discloses a design method for a retention device of an intraoral part of an orthopaedic appliance capable of enhancing the orthopedic force. The design method includes: a first step of trying bands on the maxillary first molars, namely, a step of trying the bands on the maxillary first molars so that the bands and the teeth are tightly attached and the bands are free of hindrance for chewing and irritation for gingivae; a second step of duplicating an intraoral tooth gypsum model, namely, a step of preparing a tooth impression model by using a dental alginate material, installing the bands on the maxillary first molars at left and right for retention with the bands being not adhered to the maxillary first molars, taking the tried bands out from the maxillary first molars, putting the bands in a cavity block, and filling the impression model with gypsum to prepare a gypsum model; and a third step of manufacturing a mobile orthopaedic appliance on the gypsum model, wherein an expansion screw is adhered to the orthopaedic appliance if rapid maxillary expansion is needed at the same time. The design method has characteristics of simple method, good retention effects, simple operation, wearing convenience and comfort for patients, capability of maintaining sanitation, and economical price.

Description

technical field [0001] The invention belongs to the technical field of orthodontics, and in particular relates to a design method of a retaining device for an intraoral component of an orthopedic force-enhancing appliance. Background technique [0002] Malocclusion refers to the deformity of teeth, jaw, and craniofacial caused by congenital genetic factors or acquired environmental factors, such as diseases, bad oral habits, abnormal tooth replacement, etc. during the growth and development of children, manifested as tooth arrangement Unevenness, abnormal jaw relationship between the upper and lower dental arches, abnormal size, shape, and position of the jaws, etc. Anterior crossbite of Angle's class III is a developmental deformity in which the lower front teeth are located on the labial side of the upper incisors, commonly known as "underbites". Anterior crossbite occurs and develops with the growth and development of children. The incidence rate in my country is about 5...

AI Technical Summary

Problems solved by technology

[0004] First, due to the large variation in the shape of the dentition in the replacement dentition period, such as the deciduous teeth have fallen out, the permanent teeth have not erupted or the eruption is insufficient, and the teeth have no undercuts or undercuts, resulting in poor retention of the appliance and failure to perform maxillary anterior surgery smoothly. hold

[0005] Second, it has been reported that the removable appliance is bonded to the teeth to increase the retention, but this method cannot keep the appliance clean and oral hygiene because the patient cannot remove the appliance and clean it, and the doctor needs to remove the appliance for adjustment. When the force is added, the child is more painful, and the aligner is often damaged