Douglas-de-Oliveira Dhelfeson Willya, Lages Frederico Santos, Ramos-Jorge Maria Letícia, Glória José Cristiano Ramos, Gonçalves Patricia Furtado, Flecha Olga Dumont
Department of Periodontology, Federal University of Minas Gerais, Belo Horizonte, Brazil;
Department of Periodontology, Federal University of Minas Gerais, Belo Horizonte, Brazil.
J Int Acad Periodontol. 2018 Jul 1;20(3):102-109.
The aim of the present study was to determine how long the effects of laser and cyanoacrylate last when used as treatments for dentine hypersensitivity (DH). In addition, the predictive factors of DH recurrence and the prevalence of DH according to type of tooth were investigated.
Sixty-two patients contributed with 434 sensitive teeth. Two hundred sixteen teeth were randomized to receive laser treatment (wavelength of 795 nm) and 218 received cyanoacrylate treatment. Both treatments were applied three times at intervals of 48 hours. Dentine hypersensitivity was assessed by air stimulus at baseline and 1, 30, 90 and 180 days after treatment by a blinded researcher. Additionally, possible etiologic factors were assessed. The data were analyzed by Kaplan-Meier survival curves and by logistic regression.
Both groups had signifi cant reductions in DH. Treatment failure occurred in 276 (63.6%) treated teeth and 158 (36.4%) teeth maintained the result of the treatment until the end of the study (censored teeth). The survival rate at 6 months was 36% for laser treatment, and 36% for cyanoacrylate. There was no signifi cant difference between the survival curves (p = 0.703). Gingival recession and abfraction increased the risk of treatment failure by 2.04 (p = 0.002) and 2.76 (p less than 0.001) times, respectively.
Overall, these two approaches to DH treatment had a survival rate of 36%at 6 months. The most prevalent hypersensitive tooth is the first premolar. Gingival recession and abfraction predict the recurrence of DH irrespective of patient age and sex.
本研究旨在确定激光和氰基丙烯酸酯作为牙本质过敏症（DH）治疗方法时，其效果能持续多久。此外，还研究了DH复发的预测因素以及根据牙齿类型的DH患病率。
62名患者提供了434颗敏感牙齿。216颗牙齿随机接受激光治疗（波长795nm），218颗接受氰基丙烯酸酯治疗。两种治疗均每隔48小时进行三次。由一位不知情的研究人员在基线以及治疗后1、30、90和180天通过空气刺激评估牙本质过敏症。此外，评估可能的病因因素。数据通过Kaplan-Meier生存曲线和逻辑回归进行分析。
两组的DH均有显著降低。276颗（63.6%）治疗牙齿出现治疗失败，158颗（36.4%）牙齿在研究结束时维持治疗效果（截尾牙齿）。激光治疗6个月时的生存率为36%，氰基丙烯酸酯治疗为36%。生存曲线之间无显著差异（p = 0.703）。牙龈退缩和楔状缺损分别使治疗失败风险增加2.04倍（p = 0.002）和2.76倍（p小于0.001）。
总体而言，这两种DH治疗方法在6个月时的生存率为36%。最常见的过敏牙齿是第一前磨牙。无论患者年龄和性别如何，牙龈退缩和楔状缺损均可预测DH的复发。
