Periodontitis therapy with iron alginate and glucose oxidase based on the Fenton reaction

Abstract

Periodontitis is a frequent chronic inflammatory disease brought on by bacterial infection in the biofilm that forms on the teeth. It can cause the gingival recession and tooth loss, gravely jeopardizing the oral health of people. Current therapies still suffer from issues like bleeding, pain, injured gums, limited treatment effectiveness, a lengthy treatment cycle, and bacterial resistance when using a combination of surgical intervention and antibiotic therapy. Herein, a simple one-step cross-linking process was used to create glucose oxidase (GOD) loaded upon iron alginate (FeAlg/GOD), which has a strong anti-biofilm activity, good biocompatibility, and was successfully used to treat periodontitis caused by biofilms. The results demonstrated that in the presence of a high glucose concentration in the gingival crevicular fluid, FeAlg/GOD could catalyze the conversion of glucose into gluconic acid and hydrogen peroxide. The produced hydrogen peroxide could convert Fe3+ to Fe2+ when it got to the deep periodontal pockets. Following that, the Fenton reaction was activated, producing large amounts of hydroxyl radical (·OH). In conclusion, oral plaque biofilms were removed by the FeAlg/GOD. Additionally, successful in vivo treatment was accomplished in rat's experimental periodontitis models, as evidenced by a markedly reduced inflammatory response, decreased bone loss, and made healthier gum tissue. Overall, our biocompatible and antibacterial FeAlg/GOD study presents a novel strategy for effectively speeding periodontal tissue repair and eliminating oral pathogens to tackle the grave threat of biofilm-associated illnesses.

Keywords

• Periodontitis
• Fenton reaction
• Plaque biofilm