Dental repair composite resin with biological activity and preparation method thereof

Abstract

The invention discloses dental restoration composite resin with biological activity and a preparation method thereof. The invention firstly provides silanization modified bretmanite powder which is prepared according to the following method: dropwise adding a mixture of a silane coupling agent and n-propylamine into a suspension of bretmanite, stirring under a heating condition, removing a flux, and drying the mixture to obtain the silanization modified bretmanite powder, then mixing an organic monomer, a photoinitiator and a co-initiator to obtain a resin matrix, adding silanization modified white calcium stone powder or a mixture of the silanization modified white calcium stone powder and an inorganic filler into the resin matrix, and mixing the components to obtain uncured light-cured composite resin paste, namely the dental repair composite resin. According to the invention, the silanization modification is carried out on the bretmomanite, so that an inorganic structure has organic groups and can be better combined with organic monomers; the bretmomanite is mixed with the organic monomers, an initiating system and other inorganic fillers; therefore, the dental repair resin with better organic and inorganic interface compatibility is obtained, and the mechanical property of the resin is improved.

Description

technical field [0001] The invention relates to a biologically active dental restoration composite resin and a preparation method thereof, belonging to the field of dental restoration materials. Background technique [0002] Results of the Fourth National Epidemiological Survey on Oral Health in 2015: The prevalence of oral diseases among children in my country is on the rise. Among them, the prevalence of dental caries in children aged 5 and 12 is 71.9% and 38.5%, respectively, compared with 10 years ago. An increase of 5.9 and 9.6 percentage points; the periodontal health of middle-aged people is not optimistic, caries and dentition defects are the main reasons affecting the oral health of Chinese adults. The prevalence of permanent tooth caries in middle-aged and elderly people is high, and the proportion of missing teeth in the elderly population has increased from 48.8% to 63.2%, but the average number of missing teeth is still as high as 7.5. Caries is a disease charac...

AI Technical Summary

Problems solved by technology

However, the surface of the existing wonotlite is water-absorbing, while the surface of the organic monomer commonly used in dental restorative resins is hydrophobic, the compatibility between the two is poor, and the continuity of the organic monomer is easily destroyed by the inorganic Due to the influence of fillers, it is difficult to form an effective combination at the interface, which seriously affects the performance of dental restoration resins. Therefore, it is necessary to modify the existing white wollastonite to be used in dental restoration resins

Images