渗透树脂联合美白技术修复微裂氟斑牙

Infiltration resin combined with whitening technique on micro-cracked dental fluorosis

背景:微研磨、家庭美白联合渗透树脂治疗氟斑牙具有良好的效果,但该方法对氟斑牙微裂纹的影响尚不清楚。目的:探究微研磨、家庭美白联合渗透树脂修复微裂氟斑牙的效果。方法:①临床研究:选择2020年7月至2021年3月就诊于天津医科大学口腔医院修复科的23例微裂氟斑牙患者,包括255颗微裂氟斑牙,均接受牙齿微研磨术、家庭美白与渗透树脂联合治疗,对比治疗前及治疗结束后1周、1个月的牙齿颜色、牙齿敏感程度和牙齿疼痛阈值。②体外实验:收集牙齿表面至少存在一条裂纹的氟斑牙60颗,随机分3组处理:对照组不进行任何处理,美白组进行微研磨与家庭美白处理,联合组进行微研磨、家庭美白和渗透树脂联合处理,每组20颗,测量处理后3组牙齿样本的显微硬度。结果与结论:①临床研究:治疗结束后6个月,255颗微裂氟斑牙中牙齿美白治疗显效207颗、有效48颗,总体治疗有效率为100%。随着治疗时间的延长,中、重度牙齿度敏感程度占比呈下降趋势,治疗结束后6个月,255颗氟斑牙中无重度敏感、15颗为中度敏感、125颗为轻度敏感、115颗无敏感,与治疗前的氟斑牙敏感程度相比差异有显著性意义(P<0.05)。治疗前与治疗结束后1周、6个月的牙齿疼痛阈值比较差异无显著性意义(P>0.05)。②体外实验:美白组牙齿显微硬度值低于对照组、联合组(P<0.05),对照组与联合组牙齿显微硬度值比较差异无显著性意义(P>0.05)。③结果表明,微研磨、家庭美白联合渗透树脂治疗微裂氟斑牙具有较好的疗效。

BACKGROUND:Micro-abrasion,at-home whitening combined with infiltration resin have a good effect on dental fluorosis,but the effect of this method on micro-cracks in dental fluorosis is still unclear.OBJECTIVE:To explore the effect of micro-abrasion,at-home whitening combined with infiltration resin on micro-cracked dental fluorosis.METHODS: (1) Clinical research: A total of 23 patients with micro-cracked dental fluorosis, including 255 micro-cracked dental fluorosis, were selected from July 2020 to March 2021 in the Department of Prosthodontics, Stomatology Hospital, Tianjin Medical University. All of them received combined treatment of tooth micro-abrasion, at-home whitening and infiltration resin. The tooth color, tooth sensitivity, and tooth pain threshold were compared before treatment and 1 week and 1 month after treatment. (2) In vitro experiment: 60 teeth with fluorosis with at least one crack on the tooth surface were collected and randomly divided into three groups for treatment. The control group was treated without any treatment. The whitening group was treated with micro-abrasion and at-home whitening, and the combined group was treated with micro-abrasion, at-home whitening, and infiltration resin, with 20 teeth in each group. The microhardness of the three groups of teeth samples after treatment was measured. RESULTS AND CONCLUSION: (1) Clinical study: 6 months after treatment, among 255 teeth with micro-cracked dental fluorosis, whitening treatment for 207 teeth was significantly effective and whitening treatment for 48 teeth was effective, and the overall treatment efficiency was 100%. With the extension of treatment time, the proportion of moderate and severe dental sensitivity showed a decreasing trend. At 6 months after treatment, 255 teeth with dental fluorosis had no severe sensitivity, 15 with moderate sensitivity, 125 with mild sensitivity, and 115 with no sensitivity, and the difference was significant compared with the sensitivity before treatment (P < 0.05). There was no significant difference in the threshold of tooth pain before treatment and 1 week and 6 months after treatment (P > 0.05). (2) In vitro experiment: The tooth microhardness of the whitening group was lower than that of the control group and the combined group (P < 0.05), but there was no significant difference between the control group and the combined group (P > 0.05). (3) The results show that the methods of micro-abrasion, at-home whitening combined with infiltration resin have good clinical efficacy in the treatment of micro-cracked dental fluorosis.