Feira de Santana State University, Brazil.
Braz J Otorhinolaryngol. 2010 Nov-Dec;76(6):709-12. doi: 10.1590/S1808-86942010000600007.
Mouth breathing may cause deformities on the dental arch and be a risk factor for caries and periodontal disease; fixed orthodontic appliances compound the problem.
to evaluate mineralization of tooth enamel and the oral cariogenic microbiota of mouth breathers that are using maxillary expanders.
a prospective study of 20 mouth-breathing patients with maxillary atresia, aged from 09 to 13 years. Enamel mineralization was measured using a fluorescence technique, before installing the expander and after its removal. The cariogenic microbiota was evaluated by the No Caries®. The t test (p<0.05) was applied for the statistical analysis, and the oral microbiota was analyzed by incidence.
there was a statistically significant difference in the enamel mineralization level after maxillary expansion; the mean value was 3.08. The colorimetric test showed that the caries development potential was reduced in 45%, increased in 15%, and unaltered in 40% after maxillary expander use.
there was a statistically significant difference in enamel mineralization after maxillary expansion; this difference was within the clinically normal range; the cariogenic potential increased in a small number of patients during orthodontic treatment.
评估使用上颌扩弓器的口呼吸患者的牙釉质矿化和口腔致龋微生物群。
一项前瞻性研究纳入了 20 名患有上颌后缩的口呼吸患者，年龄在 9 至 13 岁之间。在安装扩弓器之前和之后，使用荧光技术测量牙釉质矿化程度。使用 No Caries®评估致龋微生物群。采用 t 检验（p<0.05）进行统计分析，口腔微生物群通过发生率进行分析。
上颌扩张后牙釉质矿化水平有统计学显著差异；平均值为 3.08。比色试验显示，45%的患者龋齿发展潜力降低，15%的患者增加，40%的患者不变。
上颌扩张后牙釉质矿化有统计学显著差异；这种差异在临床正常范围内；在正畸治疗过程中，少数患者的致龋潜力增加。
