Folco Alejandra A, Benítez-Rogé Sandra C, Iglesias Marina, Calabrese Diana, Pelizardi Cristina, Rosa Alcira, Brusca Marisa I, Hecht Pedro, Mateu María E
Department of Orthodontics, School of Dentistry, University of Buenos Aires, Argentina.
Acta Odontol Latinoam. 2014;27(3):120-4. doi: 10.1590/S1852-48342014000300004.
Orthodontic brackets contribute to the accumulation of bacterial plaque on tooth surfaces because they hinder oral hygiene. In contrast to conventional brackets, self-ligating brackets do not require additional parts to support the arches, thus improving dental hygiene. The aim of this study was to compare the gingival response in orthodontic patients wearing self-ligating or conventional brackets. A sample of 22 patients aged 16 to 30 years was divided into two groups: Group A, treated with selfligating brackets (Damon system) and Group B, treated with conventional brackets (Roth technique). The following were assessed during the treatment: Plaque Index (PI), Gingival Index (GI) and Probing Depth (PD), and sub-gingival samples were taken from teeth 14/24 for microbiological observation. No statistically significant difference was found between Groups A and B; p>0.05 (sign-ranked) or between PI, GI and PD at the different times (Friedman's Analysis of Variance), even though the indices were found to increase at 14 days, particularly for self-ligating brackets. The quantity and quality of microorganisms present were compatible with health on days 0, 28 and 56. As from day 14 there is a predominance of microbiota compatible with gingivitis in both groups. In the samples studied, orthodontic treatment increases bacterial plaque and inflammatory gingival response, but gingival-periodontal health can be maintained with adequate basic therapy. Self-ligating and conventional brackets produced similar gingival response.
正畸托槽会阻碍口腔卫生，导致牙面细菌菌斑堆积。与传统托槽不同，自锁托槽不需要额外部件来支撑弓丝，从而改善了口腔卫生。本研究的目的是比较佩戴自锁托槽或传统托槽的正畸患者的牙龈反应。选取22名年龄在16至30岁之间的患者作为样本，分为两组：A组采用自锁托槽（Damon系统）治疗，B组采用传统托槽（Roth技术）治疗。在治疗期间评估以下指标：菌斑指数（PI）、牙龈指数（GI）和探诊深度（PD），并从14/24号牙采集龈下样本进行微生物学观察。A组和B组之间未发现统计学上的显著差异；p>0.05（符号秩和检验），不同时间的PI、GI和PD之间也未发现差异（Friedman方差分析），尽管这些指标在第14天时有所增加，尤其是自锁托槽组。在第0、28和56天时，存在的微生物数量和质量与健康状况相符。从第14天起，两组中与牙龈炎相符的微生物群占主导地位。在所研究的样本中，正畸治疗会增加细菌菌斑和牙龈炎症反应，但通过适当的基础治疗可以维持牙龈-牙周健康。自锁托槽和传统托槽产生的牙龈反应相似。
