Absorbable polylactic acid film for enhancing airtightness of absorbable root canal post of deciduous tooth

Abstract

The invention discloses an absorbable polylactic acid film for enhancing airtightness of an absorbable root canal post of a deciduous tooth. The absorbable polylactic acid film is prepared by dissolving the following raw materials in parts by weight: 0.5-1.5 parts of polylactic acid, and 5-15 parts of solvent. The absorbable polylactic acid film and the absorbable root canal post are made of the same material, and the absorbable polylactic acid film has no influence on human dental follicle cells, deciduous periodontal ligament cells and deciduous dental pulp cells, cannot result in apoptosis of the human dental follicle cells, is nontoxic, can effectively control the effective strength of the absorbable root canal post, can recover functions and a shape of the deciduous tooth for a long time to the greatest extent, and does not influence normal replacement of deciduous permanent teeth. A preparation method of the film is simple and practicable, and can be used for manufacturing during clinical application. The film is used for residual root and residual crown repair of the deciduous tooth, a crown restoration is good in retention postoperatively, and the film meets the clinical requirement of pediatric dentistry.

Description

technical field

[0001] The invention belongs to the technical field of oral cavity materials, and relates to a dental sealing material between a root canal and a root canal post, in particular to an absorbable root canal post sealing material used in the restoration of deciduous teeth with residual roots and crowns. Absorbent polylactic acid film. Background technique

[0002] Due to severe infantile caries (Severe Early Childhood Caries, S-ECC) or trauma, infants with residual roots and crowns have poor resistance and retention during restoration treatment, and fillings loose and fall off are one of the common adverse phenomena. one. The literature shows that the treatment of most deciduous teeth with residual roots and crowns often chooses symptomatic treatment or extraction, which not only affects the appearance and pronunciation of the children, but also affects the normal eruption of subsequent permanent teeth and the development of the jaw, and is also one of the ...