Effect of combined application of Er:YAG laser and remineralizers on enamel acid resistance
10.13591/j.cnki.kqyx.2025.06.003
- VernacularTitle:Er:YAG激光与再矿化剂联合应用对牙釉质抗酸性能的影响
- Author:
Min TANG
1
;
Beizhan JIANG
1
Author Information
1. 上海市同济口腔医院儿童口腔科,同济大学口腔医学院,上海牙组织修复与再生工程技术研究中心,同济大学口腔医学研究所,上海(200072)
- Publication Type:Journal Article
- Keywords:
Er:YAG laser;
remineralizer;
acid resistance;
dental erosion
- From:
STOMATOLOGY
2025;45(6):412-417
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the effect of Er:YAG(erbium-doped:yttrium aluminum garnet)laser combined with reminerali-zers on enamel acid resistance.Methods Healthy teeth that needed to be extracted due to orthodontic treatment were included,and 60 enamel blocks according to a unified standardwere prepared,and randomly divided into 6 groups(n=10).They were treated with dei-onized water(Group A),sodium fluoride(Group B),bioactive glass(Group C),Er:YAG laser(Group D),Er:YAG laser combined with sodium fluoride(Group E),and Er:YAG laser combined with bioactive glass(Group F)for 7 consecutive days before undergoing pH cycling demineralization.After the experiment,the surface morphology,calcium/phosphorus ratio,surface hardness,and surface roughness were measured in each group.Results ①Surface morphology:the enamel surfaces of groups A-F were all damaged to var-ying degrees,with groups E and F showing the least degree of damage,while group A had obvious concave defects.②Calcium/phos-phorus ratio:the calcium/phosphorus ratio on the enamel surface of groups B,C and D was significantly higher than that of group A(P＜0.000 1),while there was no significant difference between groups B,C and D(P＞0.05).The calcium/phosphorus ratio on the enamel surface of groups E and F was significantly higher than that of groups B,C and D(P＜0.001).③Surface hardness:after acid etching,the surface hardness of enamel in all groups decreased.The surface hardness loss of enamel in groups B,C and D was significantly lower than that in group A(P＜0.000 1),while there was no significant difference between groups B,C and D(P＞0.05).The surface hard-ness loss of enamel in groups E and F was significantly lower than that in groups B,C and D(P＜0.001).④Surface roughness:Com-pared with group A,the surface roughness of enamel in group D was reduced,but not statistically significant(P＞0.05).Groups B and C showed a significant decrease(P＜0.000 1),while there was no significant difference between groups B and C(P＞0.05).The surface roughness of enamel in groups E and F was significantly lower than that in groups B,C and D(P＜0.001).Conclusion The combined application of Er:YAG laser and remineralizers can enhance the acid resistance of enamel,providing a new reference for the treatment of dental erosion.
