Development of novel self-healing and antibacterial resin composite containing microcapsules filled with polymerizable healing monomer
10.3760/cma.j.issn.1002-0098.2015.08.006
- VernacularTitle:含聚合单体微胶囊的牙科新型自修复抗菌复合树脂合成初探
- Author:
Junling WU
1
;
Qiang ZHANG
;
Ting ZHU
;
Jianhua GE
;
Chuanjian ZHOU
Author Information
1. 山东大学口腔医学院口腔修复科·山东省口腔生物医学重点实验室
- Keywords:
Composite resins;
Elastic modulus;
Microcapsule;
Self-healing
- From:
Chinese Journal of Stomatology
2015;50(8):469-473
- CountryChina
- Language:Chinese
-
Abstract:
Objective To develop novel self-healing and antibacterial resin composite containing microcapsules filled with polymerizable healing monomer,and to measure its properties for further clinical application.Methods Microcapsules filled with healing monomer of triethylene glycol dimethacrylate were synthesized according to methods introduced in the previous research.Microcapsules were added into novel resin composite containing nano-antibacterial silica fillers grafted with long chain alkyl quaternary ammonium at mass fractions of 0,2.5％,5.0％,7.5％ or 10.0％.A commercial resin composite(Tetric N-Ceram) was used as control.Flexural test was used to measure resin composite flexural strength and elastic modulus.The single edge Ⅴ-notched beam method was used to measure fracture toughness and self-healing efficiency.Scanning electron microscope(SEM) was used to examine the fractured surface of selected specimen for investigation of fracture mechanisms.Results The flexural strength and elastic modulus of the resin composite were (96.4 ± 14.3) MPa and (6.2 ± 1.1) GPa respectively after incorporation of microcapsules up to 7.5％,and no significant difference was found between the experimental group and the control group[(99.1±1 1.9) MPa and (6.1±1.1) GPa] (P＞0.05).The self-healing efficiency of (66.8±7.0)％ and (79.3±9.7)％ were achieved for resin composite with microcapsule mass fractions at 7.5％ and 10.0％.SEM image showed that irregular films covered the fractured surface.Conclusions This novel self-healing and antibacterial resin composite containing microcapsules filled with polymerizable healing monomer exhibited a promising self-healing ability,which enabled itself well up for combating bulk fracture and secondary caries in clinical application.
