基于自主研发的LCF测量系统对成年女性正常𬌗唇肌闭合力的评估效果

doi:10.11958/20260727

天津医药 ›› 2026, Vol. 54 ›› Issue (9): 992-998.doi: 10.11958/20260727

基于自主研发的LCF测量系统对成年女性正常𬌗唇肌闭合力的评估效果

杨悦¹^,²^,³^,⁴(), 郭子源¹^,²^,³^,⁴, 彭朋¹^,²^,³^,⁴^,^△()

¹ 南开大学口腔医院正畸科（邮编300041）
² 南开大学医学院（邮编300041）
³ 天津市口腔功能重建重点实验室（邮编300041）
⁴ 南开大学口腔医学科学研究院（邮编300041）

收稿日期:2026-03-18 修回日期:2026-05-06 出版日期:2026-09-15 发布日期:2026-09-14
通讯作者: ^△E-mail：pengpeng_wingirl@hotmail.com
作者简介:杨悦（1992），女，主治医师，主要从事口腔正畸学方面研究。E-mail：YYok19920627@hotmail.com

Evaluation of lip closing force in adult female with normal occlusion based on the self-developed LCF measurement system

YANG Yue¹^,²^,³^,⁴(), GUO Ziyuan¹^,²^,³^,⁴, PENG Peng¹^,²^,³^,⁴^,^△()

¹ Department of Orthodontics, Nankai University Stomatology Hospital, Tianjin 300041, China
² School of Medicine, Nankai University, Tianjin 300041, China
³ Tianjin Key Laboratory of Oral and Maxillofacical Function Reconstruction, Tianjin 300041, China
⁴ Stomatology Institute of Nankai University, Tianjin 300041, China

Received:2026-03-18 Revised:2026-05-06 Published:2026-09-15 Online:2026-09-14
Contact: ^△E-mail：pengpeng_wingirl@hotmail.com

杨悦, 郭子源, 彭朋. 基于自主研发的LCF测量系统对成年女性正常𬌗唇肌闭合力的评估效果[J]. 天津医药, 2026, 54(9): 992-998.

YANG Yue, GUO Ziyuan, PENG Peng. Evaluation of lip closing force in adult female with normal occlusion based on the self-developed LCF measurement system[J]. Tianjin Medical Journal, 2026, 54(9): 992-998.

摘要/Abstract

摘要：

目的基于自主研发的唇肌闭合力（LCF）测量系统，评估成年女性正常𬌗的唇肌闭合力特征，明确唇部软组织指标与唇肌闭合稳定性的关联。方法选取81例19~24岁成年女性正常𬌗志愿者，测量唇部8项软组织指标（A-Sn、UIC-UL、B-Si、LIC-LL、Sn-Stms、Stmi-Si、UL-EP、LL-EP），并通过自主研发的LCF测量系统采集LCF电信号，绘制LCF曲线并提取最大值、平均值及第一频段小波熵值（FWPE）。将唇部软组织指标按偏离中位数程度划分为5个等级（5级最接近标准，1级最偏离），整合为临床评分（CG）；剔除环境干扰、主观意识导致的无效数据后，探讨LCF相关指标（最大值、均值、稳定性）对唇部软组织形态的影响，因变量CG等级为有序分类变量，最终以38例有效样本构建有序Logistic回归模型，采用伪决定系数（R²）及P值评价模型可靠性。结果最终建立的回归模型拟合效果可接受（伪R²=0.532）；FWPE的增大会使CG趋向低等级的概率升高（β₃=-0.175，OR=0.839，95%CI：0.722~0.976），唇部软组织指标越偏离标准值；FWPE越小，唇肌闭合稳定性越好，唇部软组织指标越接近标准值。结论自主研发的LCF测量系统可有效用于成年女性正常𬌗的唇肌闭合力评估。

关键词: 牙𬌗, 小波分析, 熵, 女性, 成年人, 唇肌闭合力, 稳定性

Abstract:

Objective To assess the characteristics of lip closing force (LCF) in young adult females with normal occlusion using a self-developed LCF measurement system, and to clarify the relationship between lip soft tissue indicators and lip closure stability, so as to provide a basis for clinical evaluation of lip muscle function. Methods A total of 81 adult female volunteers aged 19 to 24 years with normal occlusion were enrolled in this study. Eight cephalometric lip soft tissue indicators (A-Sn, UIC-UL, B-Si, LIC-LL, Sn-Stms, Stmi-Si, UL-EP and LL-EP) were measured. Meanwhile, LCF electrical signals were collected via the self-developed LCF measurement system, LCF curves were plotted, and three core indicators including maximum value, mean value and first wavelet packet entropy (FWPE) were extracted. The lip soft tissue indicators were divided into 5 grades according to the degree of deviation from the median (grade 5: closest to the standard; grade 1: most deviant), and then integrated into a clinical grade (CG). After eliminating invalid data caused by environmental interference and subjective consciousness, the effects of LCF-related indicators (maximum value, mean value, and stability) on lip soft tissue morphology were analyzed. The dependent variable CG grade was an ordinal categorical variable. Eventually, an ordinal Logistic regression model was constructed with 38 valid samples. Pseudo R² and P-value (test level α=0.05) were adopted to evaluate the reliability of the regression model. Results The finally established regression model showed acceptable fitting effect (Pseudo R²=0.532). An increase in FWPE would increase the probability of CG tending to a lower grade (β₃=-0.175, OR=0.839, 95%CI: 0.722-0.976), indicating that the lip soft tissue indicators deviated more from the standard values. In contrast, the smaller the FWPE, the better the lip closure stability, and the closer the lip soft tissue indicators were to the standard values. Conclusion The self-developed LCF measurement system can be effectively used for the evaluation of lip closing force in adult females with normal occlusion.

Key words: dental occlusion, wavelet analysis, entropy, femininity, adult, lip closing force, stability

中图分类号:

R782.2

图/表 10

参考文献 27

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信号类型	判断标准
有效信号	（1）信号强度≥峰值的10%，连续无中断持续≥16 s；（2）波形平滑，无明显干扰，基线漂移≤±0.5 mV，功率谱密度（PSD）拟合的决定系数R²≥0.8；（3）信号峰值清晰，上升至峰值时间≤1 s，有效时段内无数据丢失。
无效信号	（1）稳定时长<16 s，或信号在达到峰值后10 s内降至峰值的<5%；（2）波形畸变、出现尖峰噪声（基线漂移>±0.5 mV），或PSD拟合决定系数R²<0.8；（3）无清晰峰值、波动异常、有效时段内存在数据丢失或信号中断。

信号类型	判断标准
有效信号	（1）信号强度≥峰值的10%，连续无中断持续≥16 s；（2）波形平滑，无明显干扰，基线漂移≤±0.5 mV，功率谱密度（PSD）拟合的决定系数R²≥0.8；（3）信号峰值清晰，上升至峰值时间≤1 s，有效时段内无数据丢失。
无效信号	（1）稳定时长<16 s，或信号在达到峰值后10 s内降至峰值的<5%；（2）波形畸变、出现尖峰噪声（基线漂移>±0.5 mV），或PSD拟合决定系数R²<0.8；（3）无清晰峰值、波动异常、有效时段内存在数据丢失或信号中断。

CG等级	波动幅度	A-Sn	UIC-UL	B-Si	LIC-LL	Sn-Stms	Stmi-Si	UL-EP	LL-EP
5	±20%	22.82~23.84	22.32~23.28	20.79~21.89	-0.18~0.78	37.39~38.75	28.88~30.34	-1.13~-0.29	-0.18~0.78
4	+20%~40%	23.84~24.35	23.28~23.77	21.89~22.44	0.78~1.26	38.75~39.43	30.34~31.07	-0.29~0.14	0.78~1.26
4	-20%~-40%	22.31~22.82	21.83~22.32	20.24~20.79	-0.66~-0.18	36.71~37.39	28.15~28.88	-1.56~-1.13	-0.66~-0.18
3	+40%~60%	24.35~24.86	23.77~24.25	22.44~22.99	1.26~1.74	39.43~40.12	31.07~31.79	0.14~0.56	1.26~1.74
3	-40%~-60%	21.80~22.31	21.35~21.83	19.70~20.24	-1.14~-0.66	36.02~36.71	27.43~28.15	-1.98~-1.56	-1.14~-0.66
2	+60%~80%	24.86~25.37	24.25~24.74	22.98~23.53	1.74~2.22	40.12~40.80	31.79~32.52	0.56~0.99	1.74~2.22
2	-60%~-80%	21.29~21.80	20.86~21.35	19.15~19.70	-1.62~-1.14	35.34~36.02	26.70~27.43	-2.41~-1.98	-1.62~-1.14
1	+80%~100%	25.37~25.88	24.74~25.22	23.53~24.08	2.22~2.70	40.80~41.48	32.52~33.25	0.99~1.41	2.22~2.70
1	-80%~-100%	20.78~21.29	20.38~20.87	18.60~19.15	-2.10~1.62	34.66~35.34	25.97~26.70	-2.83~-2.41	-2.10~-1.62

CG等级	波动幅度	A-Sn	UIC-UL	B-Si	LIC-LL	Sn-Stms	Stmi-Si	UL-EP	LL-EP
5	±20%	22.82~23.84	22.32~23.28	20.79~21.89	-0.18~0.78	37.39~38.75	28.88~30.34	-1.13~-0.29	-0.18~0.78
4	+20%~40%	23.84~24.35	23.28~23.77	21.89~22.44	0.78~1.26	38.75~39.43	30.34~31.07	-0.29~0.14	0.78~1.26
4	-20%~-40%	22.31~22.82	21.83~22.32	20.24~20.79	-0.66~-0.18	36.71~37.39	28.15~28.88	-1.56~-1.13	-0.66~-0.18
3	+40%~60%	24.35~24.86	23.77~24.25	22.44~22.99	1.26~1.74	39.43~40.12	31.07~31.79	0.14~0.56	1.26~1.74
3	-40%~-60%	21.80~22.31	21.35~21.83	19.70~20.24	-1.14~-0.66	36.02~36.71	27.43~28.15	-1.98~-1.56	-1.14~-0.66
2	+60%~80%	24.86~25.37	24.25~24.74	22.98~23.53	1.74~2.22	40.12~40.80	31.79~32.52	0.56~0.99	1.74~2.22
2	-60%~-80%	21.29~21.80	20.86~21.35	19.15~19.70	-1.62~-1.14	35.34~36.02	26.70~27.43	-2.41~-1.98	-1.62~-1.14
1	+80%~100%	25.37~25.88	24.74~25.22	23.53~24.08	2.22~2.70	40.80~41.48	32.52~33.25	0.99~1.41	2.22~2.70
1	-80%~-100%	20.78~21.29	20.38~20.87	18.60~19.15	-2.10~1.62	34.66~35.34	25.97~26.70	-2.83~-2.41	-2.10~-1.62

组别	n		年龄/岁	BMI/（kg/m²）			A-Sn/mm			UIC-UL/mm
有效组	38		20.1±1.2	20.3±1.1			23.1（22.0，24.2）			22.9（21.8，24.2）
剔除组	43		20.0±1.3	19.9±1.5			22.7（21.9，24.0）			23.0（21.9，24.3）
t或Z			0.125	1.380			0.680			0.720
组别		B-Si/mm				LIC-LL/mm		Sn-Stms/mm
有效组		21.3（20.0，22.9）				0.7（-0.3，1.8）		37.9（36.3，39.8）
剔除组		21.7（20.0，23.5）				0.6（-0.4，1.7）		37.5（35.8，39.9）
t或Z		0.560				0.120		0.500
组别		Stmi-Si/mm			UL-EP/mm				LL-EP/mm
有效组		29.2（27.5，31.7）			-0.1（-1.3，0.8）				0.2（-0.8，0.8）
剔除组		29.0（27.5，31.3）			-0.1（-1.5，0.8）				-0.1（-0.9，0.8）
t或Z		0.420			0.000				0.110

基于自主研发的LCF测量系统对成年女性正常𬌗唇肌闭合力的评估效果

Evaluation of lip closing force in adult female with normal occlusion based on the self-developed LCF measurement system

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CG等级	n	最大值	平均值	FWPE^a
1级	9	69.34±25.57	38.98±16.17	20.18±8.84
2级	17	87.53±36.75	53.00±23.51	15.49±7.54
3级	10	120.6±43.35	80.06±25.60	10.52±5.44
4级	2	226.5±53.03	191.85±95.95	10.15±0.78

自变量	β	SE	Wald χ²	P	OR	OR（95%CI）
最大值	0.040	0.024	2.863	0.091	1.041	0.993~1.091
平均值	-0.013	0.035	0.132	0.717	0.987	0.922~1.057
FWPE	-0.175	0.077	5.125	0.024	0.839	0.722~0.976
常数项1	-1.406	1.412	0.991	0.319	0.245	-
常数项2	1.787	1.436	1.549	0.213	5.972	-

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