Disposable anti-demoulding maxillary tray

Abstract

The invention discloses a disposable anti-demoulding maxillary tray. T-shaped retention devices are additionally arranged in the middles of the two sides of a cheek tongue on the inner side wall of a tray body, the edge of the tray body is designed to be of an inwards-rolled locking retention structure, the bottom of the tray body is designed to be of a double-layer bottom, and a retention window is enlarged in the bottom of the inner layer, so that impression materials can conveniently penetrate through the retention window to flow into a retention cavity between an inner bottom and an outer bottom. A thin-column-shaped supporting column retention device is arranged in the middle, exhaust holes are formed in the periphery of an interlayer of the inner bottom and the outer bottom, impression materials can conveniently flow into an interlayer to fill the interlayer, good mechanical retention is achieved, it is guaranteed that an impression is not separated from a tray finally, tight combination is achieved, deformation is avoided, and good accuracy is guaranteed.

Description

technical field [0001] The invention relates to a disposable mold-proof maxillary tray, which belongs to a tool for making impressions in the oral cavity. Background technique [0002] In oral treatment, it is often necessary to take intraoral impressions, such as fixation, movable restorations, and implant restorations in oral restoration treatment, model analysis and model preservation in orthodontic treatment. [0003] Accurate impression is the basis of all restorative treatments, and it is also the guarantee of accurate treatments such as invisible orthodontics. [0004] Although the development of digital impression technology is changing with each passing day, because of the high price of the scanner, it is not convenient for clinical popularization. Clinical treatment such as daily outpatient restoration still uses trays and impression materials to make impressions of the upper and lower dentition, and then reperfuse the model to make restorations. Or correctors, et...

AI Technical Summary

Problems solved by technology

Disposable plastic trays are also used clinically in the oral cavity. The advantage is that high-temperature disinfection is not required and cross-infection can be avoided. However, usually disposable plastic trays simply use tray punching to increase the retention of impression materials, and the bottom is not strong enough and easily deformed. The plastic material is not hydrophilic, and the mechanical locking force between the impression material and the tray is obviously insufficient, which often leads to serious demoulding during the impression making, which affects the work efficiency and the quality of the prosthesis, and has a certain impact on the clinical work. influences

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