Efficient Photopolymerization of Dental Resin Composites Using the Photoluminescent Long Afterglow of Sr2MgSi2O7:Eu2+,Dy3

Zezhou Hu; Jia Xu; Yongsheng Wang; Lingdan Xu; Yangman Yi; Bin Liu; Zhaofeng Wang

doi:10.1021/acsomega.3c01855

Efficient Photopolymerization of Dental Resin Composites Using the Photoluminescent Long Afterglow of Sr₂MgSi₂O₇:Eu²⁺,Dy³

ACS Omega. 2023 Aug 29;8(36):32396-32403. doi: 10.1021/acsomega.3c01855. eCollection 2023 Sep 12.

Authors

Zezhou Hu^{1

2}, Jia Xu^{1

2}, Yongsheng Wang², Lingdan Xu¹, Yangman Yi¹, Bin Liu¹, Zhaofeng Wang^{2

3}

Affiliations

¹ School/Hospital of Stomatology, Lanzhou University, Lanzhou, Gansu 730000, China.
² State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.
³ Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing, Yantai, Shandong 265503, China.

Abstract

Dental curing light with blue emission acts as the excitation source for the photopolymerization of the dental composite resin to achieve dental repairing. However, the current repair methods still suffer from a low monomer conversion degree and incomplete resin curing. In this study, novel dental resin composites (DRCs) were prepared by combining Sr₂MgSi₂O₇:Eu²⁺,Dy³⁺ (SMSED), a photoluminescent material with a blue long afterglow, and dental resin composites. The curing depth, double bond conversion, elastic modulus, compressive strength, water absorption and solubility, and cytotoxicity were investigated systematically. The results suggest that adding 1 wt % SMSED to dental resin composites can maximize the curing depth and double bond conversion rate of DRCs and reduce its water absorption capacity without affecting the mechanical properties and biological toxicity. This work explores the practical applications of SMSED in dental resin composites, which provides an important reference for further improving the effect of dental caries repair.