Kinney Ryan, Burris Richard C, Moffat Ryan, Almpani Konstantinia
College of Dental Medicine, Roseman University of Health Sciences, 10920 S River Front Pkwy, South Jordan, UT 84095, USA.
Diagnostics (Basel). 2024 Aug 6;14(16):1710. doi: 10.3390/diagnostics14161710.
The maxillary labial frenum (MLF) is a soft tissue fold connecting the upper lip to the alveolar process. Abnormal attachment can cause periodontal, functional, and esthetic problems. Differential diagnosis is important and can prevent unnecessary interventions. This study aims to summarize the current evidence on the assessment and management of abnormal MLF.
A thorough review of the literature was conducted. Five online databases were searched for relevant peer-reviewed human studies. Article screening and data extraction were performed independently by two reviewers using predefined inclusion/exclusion criteria. Information about article type, study design, participants' characteristics, interventions, and outcomes was extracted and synthesized.
52 articles met the review criteria. MLF is a dynamic structure characterized by a wide normal morphological variation. MLF assessment in infants has not been standardized. Studies in pre-adolescents reported a change in the thickness and position of the MLF observed over time, resulting in a lower prevalence of abnormal MLF morphology. Studies in adolescents and adults reported variable differential diagnosis criteria. Lasers appear as the most advantageous frenectomy modality.
There is a need for more objective MLF diagnostic protocols and treatment guidelines, which could prevent unnecessary surgical interventions.
上颌唇系带（MLF）是连接上唇与牙槽突的软组织皱襞。附着异常可导致牙周、功能和美观问题。鉴别诊断很重要，可防止不必要的干预。本研究旨在总结目前关于异常MLF评估与处理的证据。
对文献进行全面回顾。检索了五个在线数据库以查找相关的同行评审的人体研究。两名评审员使用预定义的纳入/排除标准独立进行文章筛选和数据提取。提取并综合了有关文章类型、研究设计、参与者特征、干预措施和结果的信息。
52篇文章符合综述标准。MLF是一种动态结构，具有广泛的正常形态变异。婴儿期的MLF评估尚未标准化。青少年前期的研究报告称，随着时间推移观察到MLF的厚度和位置发生变化，导致异常MLF形态的患病率降低。青少年和成人的研究报告了不同的鉴别诊断标准。激光似乎是最有利的系带切除术方式。
需要更客观的MLF诊断方案和治疗指南，以防止不必要的手术干预。
