College of Stomatology, Chongqing Medical University, Chongqing, China.
Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing, China.
PLoS One. 2022 Oct 25;17(10):e0276156. doi: 10.1371/journal.pone.0276156. eCollection 2022.
The association of head and cervical posture with malocclusion has been studied for many years. Despite extensively encouraging researches, no conclusive evidence has been reached for clinical application.
To identify the question "Does head and cervical posture correlate to malocclusion?", a systematic review and meta-analysis based on the available studies were carried out (PROSPERO registration number: CRD42022319742).
A search of PubMed, Embase, Cochrane Library, and the grey literature was performed without language restrictions. The study screening, data extraction, risk-of-bias evaluation and methodological quality assessment were performed by two independent investigators. When a disagreement arose, a third author was consulted.
6 original cross-sectional studies involving 505 participants were included, which were of moderate methodological quality. NL/VER in Class Ⅱ group and NL/CVT in Class Ⅲ group showed significant differences compared to Class Ⅰ group, but no significant differences were observed in most of the variables like NSL/VER, OPT/CVT, OPT/HOR, CVT/HOR, NSL/OPT, NSL/CVT, NL/OPT in Class Ⅱ and Ⅲ groups.
The results suggested that the current research evidence is not sound enough to prove the association of head and cervical posture with sagittal malocclusion. Better controlled design and a larger sample size are required for clarifying this question in future study.
头颈部姿势与错颌畸形的相关性已被研究多年。尽管有大量的研究，但仍未得出明确的结论以供临床应用。
为了回答“头颈部姿势与错颌畸形是否相关？”这一问题，我们进行了一项基于现有研究的系统评价和荟萃分析（PROSPERO 注册号：CRD42022319742）。
我们对 PubMed、Embase、Cochrane 图书馆和灰色文献进行了无语言限制的检索。由两名独立的研究者进行研究筛选、数据提取、偏倚风险评估和方法学质量评估。当出现分歧时，咨询第三位作者。
共纳入 6 项原始横断面研究，涉及 505 名参与者，这些研究的方法学质量为中等。与Ⅰ类组相比，Ⅱ类组的 NL/VER 和Ⅲ类组的 NL/CVT 存在显著差异，但在大多数变量中，如 NSL/VER、OPT/CVT、OPT/HOR、CVT/HOR、NSL/OPT、NSL/CVT 和 NL/OPT，Ⅱ类和Ⅲ类组之间均未观察到显著差异。
研究结果表明，目前的研究证据还不够充分，无法证明头颈部姿势与矢状面错颌畸形之间存在关联。未来的研究需要更好的设计和更大的样本量来进一步阐明这一问题。
