Method for manufacturing injectable water-swelling gingival retraction paste

Abstract

The invention relates to a method for manufacturing injectable water-swelling gingival retraction paste. The method comprises the following specific operations of: preparing and mixing 1-3g of polyvinylpyrrolidone (PVP) and 20mL of aluminium chloride solution with concentration of 15%, and putting in a water bath at a temperature 70 DEG C for 30min to sufficiently dissolve; slowly adding 20-30g of kaolin and 2-3g of cross-linked polyvinylpyrrolidone (PVPP), putting in a numerical constant temperature stirrer, and sufficiently stirring at a temperature 70 DEG C under a revolving speed 100r / s to obtain the injectable water-swelling gingival retraction paste. The method for manufacturing injectable water-swelling gingival retraction paste has simple operation, good controllability, environmentally friendly and high yield; the materials used are pharmaceutical substances with high biocompatibility, the injectable water-swelling gingival retraction paste is an ideal material for implementing gingival retraction technology; the gingival retraction material obtained through the method has the advantages of convenient operation, time-saving and no wound and the like; when compared with similar products abroad, the injectable water-swelling gingival retraction paste has high price performance ratio; the problem that similar products abroad are collapsed when meeting water is overcome, with good stability in oral cavity saliva environment, the injectable water-swelling gingival retraction paste is not collapsed, and the injectable water-swelling gingival retraction paste can swell.

Description

technical field [0001] The invention belongs to biomedical material technology, and is used for a preparation method of materials that need to push away gingival margins in clinical oral cavity. Background technique [0002] In oral clinical fixed restoration, when the restoration edge involves the gingival margin or subgingival, improving the suitability of the crown edge and reducing its stimulation to the periodontal tissue is the key to the success of the restoration. Using gingival retraction technology is conducive to preparing good tooth margins and reducing damage to the gingiva during tooth preparation. It can also improve the accuracy of impressions, thereby increasing the success rate of restorations. [0003] The initial gingival retraction material used was homemade cotton thread with or without epinephrine. Later, specialized companies produced finished products, such as braided gingival retraction cords, double-strand twisted gingival retraction cords; drug-f...

AI Technical Summary

Problems solved by technology

The wireless gingival retraction technology has the advantages of positive clinical effect, time saving, easy operation, no bleeding, no need for anesthesia, and less damage, but its price is expensive, which is dozens of times that of the gingival retraction cord. It is not suitable for my country's national conditions and is not conducive to widespread clinical application.

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