Gap recovering and holding device

Abstract

The invention provides a gap recovering and holding device and relates to the field of oral medical instruments. The device is characterized by mainly comprising a retention ring, a sliding groove, a main arch wire, a force application spring and a baffle plate. The sliding groove is fixedly connected to the outer side surface of the retention ring. A through hole matched with the outer contour of the main arch wire is arranged in the sliding groove. The sidewall of the front end of the sliding groove is provided with a retention hook. The main arch wire is provided with a U-shaped bend positioned in front of the sliding groove. The rear end of the U-shaped bend is provided with a moving rod capable of sliding back and forth inside the through hole of the sliding groove. The front end of the force application spring is fixedly connected with the baffle plate. The rear end of the force application spring is connected with the main arch wire. The device is reasonable in design, simple in structure, and convenient to use. Meanwhile, the device has a good promotional value for recovering and holding a children edentulous gap.

Description

technical field [0001] The invention relates to the field of oral medical instruments, in particular to a gap recovery and maintenance device. Background technique [0002] Deciduous tooth caries is the most common and high-incidence disease among children's oral diseases, especially the deciduous molars have a very high caries rate, and severe caries may be complicated by periapical abscess, alveolar abscess, etc., which must be extracted in the end, which is the cause of deciduous molars. leading cause of premature loss. Premature loss of deciduous molars often easily leads to displacement of adjacent teeth, reduction in the length of the dental arch, and asymmetrical arch, resulting in misplaced eruption of the inherited permanent teeth or impacted impaction, resulting in occlusal deformities such as crowding. Children with premature loss of primary teeth are three times more likely to require subsequent orthodontic treatment than normal children. Studies have found tha...

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Problems solved by technology

[0003] The above commonly used methods have relatively large clinical defects. The main disadvantages are: (1) It is mainly used to maintain the gap after the premature loss of deciduous molars, or a small amount of gap expansion. When the gap is reduced to more than 1mm, the common gap is maintained The device cannot expand the gap, and the adjacent teeth that move forward cannot return to the original position, which further leads to the occurrence of malocclusion of the matching teeth

(2) Even if the force can be adjusted slightly, the orthodontic force cannot be controlled, and the space maintenance is used in the mixed dentition stage of children, and the force must be light, usually about 60 grams

(3) After the deciduous molars are missing, the adjacent teeth tend to move mesially. Even if the ordinary space maintainer can be fine-tuned with force, the molars will go straight back, unable to complete the distal inclination and then stand upright.

(4) The ordinary fine-tuning space maintainer has the power to directly expand the gap after it is brought into the mouth, and it cannot be taken out and adjusted after it is worn in and bonded. Children, as a special group, have immature minds and are likely to cause discomfort in children. Let the child get used to the retainer first, and then apply force

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