Gum expelling composite and gum expelling injector

Abstract

The invention discloses a gum expelling composite, which comprises filling agent, astringing agent, amino acid humectant and proper dissolvent. The gum expelling composite is safe and effective, has high safety, high hemostasis rate and good gum expelling effect, prolongs the validity period due to the amino acid humectant, reduces the content of the solid and the astringing agent, and guaranteesthe safety and the stability of the use thereof. Meanwhile, the invention further relates to a gum expelling injector.

Description

technical field [0001] The invention relates to the clinical field of dentistry, in particular to a gingival retraction composition. Background technique [0002] In clinical dental crown and bridge restoration, the width, tightness and shape of the restoration edge will affect the health of the gums and affect the appearance. Therefore, after the tooth preparation of the porcelain crown and bridge, it is necessary to adopt a certain method to separate the gum from the shoulder and stop bleeding, inhibit the leakage of gingival crevicular fluid, take out a clear impression, and obtain an accurate model. Provides an important guarantee for making qualified restorations. [0003] The chemical-mechanical method is a common gingival retraction method in dentistry. It uses mechanical force to squeeze the gingival retraction cord into the gingival sulcus to expand it. However, the compressive force provided by the wire itself sometimes cannot completely control the blood or fluid...

AI Technical Summary

Problems solved by technology

[0004] During the gingival retraction operation, although the addition of chemical agents can effectively shrink the tissue or blood vessels temporarily to control the exudation and bleeding of gingival fluid, however, the use of drugs can cause local tissue damage or side effects that cannot be avoided

Such as epinephrine (8%) astringent, which can cause side effects such as increased blood pressure, rapid pulse and gum injury

In addition, studies have pointed out that more than 10wt% aluminum chloride astringent can cause serious tissue damage, and gingival retraction materials containing high concentrations of astringent (15%) are more likely to cause damage to the patient's gingival tissue

At the same time, in the prior art, flavoring agents such as sodium carbonate or sodium bicarbonate are added to adjust the acidity of the astringent, which can undergo a double hydrolysis reaction with the astringent, resulting in a reduction in the active ingredient content of the gingival paste, or even failure.

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