Effect of Morinda citrifolia juice on the bonding strength and nanoleakage of crowns dentin
10.12016/j.issn.2096-1456.2024.06.003
- VernacularTitle:诺丽对冠部牙本质粘接强度及纳米渗漏的影响
- Author:
Keying ZHOU
1
;
Yanping LI
;
Haiqing LI
;
Lina HE
;
Shuang PAN
;
Yumei NIU
Author Information
1. 哈尔滨医科大学附属第一医院,哈尔滨医科大学口腔医学院,黑龙江 哈尔滨(150000)
- Keywords:
dentin;
Morinda citrifolia juice;
sodium hypochlorite;
composite resin;
microtensile bond strength;
nanoleakage;
adhesive interface;
scanning electron microscope
- From:
Journal of Prevention and Treatment for Stomatological Diseases
2024;32(6):420-427
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effect of Morinda citrifolia juice(MCJ)combined with ethylene diamine tet-raacetic acid(EDTA)on premolar bonding strength and nanoleakage and compare the results with those of the most commonly used root canal irrigation solution,sodium hypochlorite(NaClO),to provide a reference for clinical applica-tion.Methods This study was approved by the ethics review committee.Sixty-three human premolars extracted for orthodontic treatment were randomly divided into a control group(distilled water group)and 6 experimental groups ac-cording to the different rinsing solutions used after the surface enamel was removed.The experimental groups included Group A(2.5%NaClO),Group B(5.25%NaClO),Group C(6%MCJ),Group D(2.5%NaClO-17%EDTA),Group E(5.25%NaClO-17%EDTA),and Group F(6%MCJ-17%EDTA)(n = 9).After soaking in the corresponding rinsing so-lution for 20 minutes,they were layered and stacked on their surfaces to form 4 mm×4 mm×3 mm Z350 resin blocks.Six samples from each group were cut into 1 mm×1 mm×8 mm specimen strips for microtensile bonding strength test-ing.The fracture type was determined under a stereomicroscope,and the remaining 3 samples from each group were aged and cut into 1 mm thick slices for interface nanoleakage testing and scanning electron microscopy observation of the resin dentin bonding interface.Results There were significant differences in the microtensile bonding strength among the groups(P＜0.05),and the control group had the highest bonding strength.Among experimental groups,Group B had the lowest bonding strength,mainly bonding interface fracture,and Group F had the highest bonding strength,mainly mixed fracture.There were significant differences in nanoleakage among all groups(P＜0.05),and the control group had the lowest nanoleakage value.Among experimental groups,Group B had the highest nanoleakage,with resin protrusions being unaltered,and Group F had the lowest nanoleakage value,with resin protrusions being thick and dense.Conclusion The higher the concentration of NaClO was,the worse the bonding strength and edge sealing of the crown dentin were.The effects of root canal irrigation with MCJ and EDTA on the adhesive strength and edge sealing of crown dentin were less pronounced than those of root canal irrigation with NaClO and EDTA.
