A kind of gingival retraction composite material and its preparation method and application

Abstract

The invention provides a composite material for gingival retraction and a preparation method and application thereof. The composite material for gingival retraction is prepared from main raw materials and auxiliary materials, wherein the main raw materials include polyurethane and acrylic acid. In the composite material for gingival retraction, the polyurethane and the acrylic acid are combined to produce a synergistic effect, polymerization and curing can be quickly performed to increase the volume so as to play a gingival retraction effect, it can be also ensured that the composite material for gingival retraction has suitable hardness and avoids gingiva hurt in the curing process. During gingival retraction of the composite material for gingival retraction, the curing time is 8-20 minutes, the curing time is short, the curing volume is increased by 25-37%, a gingival retraction effect is good, gingival retraction is uniform, the residual bleeding amount and residual saliva amount are bot obvious, and the gingiva can get right within 4-10 hours after membrane taking. In addition, the operating time required for gingival retraction performed by using the composite material is short, the steps are simple, skilled operation can be achieved through short-time training, and the composite material has a very good application prospect.

Description

technical field [0001] The invention belongs to the technical field of biomaterials, and relates to a gingival retraction composite material and a preparation method and application thereof. Background technique [0002] Gingival recession, the problem of receding gums, is the biggest problem faced by restorative dentists. In the clinical stage, in order to complete the denture with both shape and function, the dental restoration doctor needs to obtain a perfect denture impression, which includes: 1) complete tooth preparation anatomy; 2) correct record of the tooth preparation edge; 3 ) copying of adjacent teeth; 4) copying of occlusal dentition; 5) copying of periodontal soft tissue; and 6) copying of exposed roots. In order to meet the above conditions, it is inevitable to retract the patient's gingiva to the tooth surface that can expose the operating space, which requires a convenient, fast and less painful method for gingival retraction. [0003] At present, there ar...

AI Technical Summary

Problems solved by technology

However, one must be very careful when placing the retraction line. The gingival tissue is easily peeled off under the action of the retraction line, and even causes secondary damage to the gingival tissue; moreover, many secondary injuries cannot be found until a week after the tooth is restored. It brings unnecessary troubles to patients and physicians

[0004] CN105107025A discloses an organic / inorganic composite material, its preparation method and its use in denture production. The composite material contains subject raw materials and auxiliary materials, wherein the subject raw materials are thermosetting acrylic polymer and zirconia ceramic powder, although the material Can be used as cartilage, dentures and non-structural artificial bone materials, but does not play a role in safe gingival retraction in dental restorations

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