Angle Orthod. 2017 Nov;87(6):886-896. doi: 10.2319/021517-111.1. Epub 2017 Sep 8.
To evaluate whether the use of palatal expansion techniques can influence hearing loss in children and adolescents with previous hearing impairment.
Electronic searches in PubMed, Scopus, Web of Science, The Cochrane Library, Lilacs, OpenGrey, and Google Scholar were performed with a controlled vocabulary and free-text terms relating to palatal expansion and hearing loss. No language or time restrictions were imposed. Clinical trials that focused on human patients treated with rapid or semirapid maxillary expansion in children and teenagers with hearing loss were included. Data extraction was undertaken by two authors, with conflict resolution by a third author. Risk of bias assessment and data extraction were performed on the selected studies.
Seventy-four citations were retrieved by the search. Initially, 12 studies were selected according to the eligibility criteria, but three studies were excluded because of the presence of adults, absence of hearing level evaluation, and oversampling, resulting in nine studies. The mean improvement in hearing levels varied from 2 to 19 dB among the studies. The risk of bias varied from low to moderate risk.
The evidence indicated that there was a hearing improvement after maxillary expansion in patients with hearing loss in the evaluated studies, although more controlled and randomized studies are necessary to investigate this issue further.
评估腭扩张技术的使用是否会影响先前听力受损的儿童和青少年的听力损失。
通过受控词汇和与腭扩张和听力损失相关的自由文本术语，在 PubMed、Scopus、Web of Science、The Cochrane Library、Lilacs、OpenGrey 和 Google Scholar 中进行电子检索。未施加语言或时间限制。纳入了专注于患有听力损失的儿童和青少年接受快速或半快速上颌扩张治疗的人类患者的临床试验。由两位作者进行数据提取，由第三位作者解决冲突。对选定的研究进行了偏倚风险评估和数据提取。
通过搜索检索到 74 条引文。最初，根据入选标准选择了 12 项研究，但由于存在成人、缺乏听力水平评估和过度抽样，有 3 项研究被排除在外，最终纳入了 9 项研究。研究之间听力水平的平均改善幅度从 2 到 19dB 不等。偏倚风险从低风险到中风险不等。
评估研究表明，在接受听力损失治疗的患者中，上颌扩张后听力有所改善，但需要更多的对照和随机研究来进一步研究这个问题。
