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首页> 外文期刊>Journal of Clinical and Diagnostic Research >Measurement of Perioral Pressures at Rest and its Correlation with Dental Parameters in Orthodontic Patients with Different Occlusions
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Measurement of Perioral Pressures at Rest and its Correlation with Dental Parameters in Orthodontic Patients with Different Occlusions

机译：不同咬合的正畸患者静息时围压的测量及其与牙科参数的关系

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Forces exerted by lips, cheeks and tongue in resting state is believed to be more important in affecting the position of teeth and malocclusion than during any activity. Muscles play the primary morphogenetic role to final size and shape of skeletal components. Hence there may be a probable relationship between the muscular pressure and structural configuration in Class I, Class II and Class III malocclusions.Aim: To evaluate perioral pressure in various malocclusions and their correlation with incisor inclination and arch width.Materials and Methods: This descriptive cross-sectional study was conducted in Department of Orthodontics, Faculty of Dental Sciences, SGT University, Budhera, Haryana with the aim of establishing a correlation between developing malocclusion and encompassing musculature which consisted of evaluation of lip and cheek pressure in different malocclusions for six months duration from April 2016 to September 2016. Out of 86 subjects who reported for orthodontic consultation in three months duration in department?s OPD; 50 subjects (32 females and 18 males) with age group range from 12 to 20 years; were advised for fixed orthodontic therapy. Before starting the treatment, they were selected for the present study and were divided into three groups based on their occlusal status; Group I (20 subjects) as Angle?s Class I; Group II (20 subjects) as Angle?s Class II division 1 (Class II/1) malocclusion and Group III (10 subjects) as Angle?s Class II division 2 (Class II/2) malocclusion. A force-sensing resistor device with a transducer thickness of less than 1 mm was used for measurements. The sensor was positioned intraorally at different sites with a thin layer of soft wax for stabilisation. Labial and buccal pressure measurements were made with lips and cheek at rest. Pressure values, cephalometric parameters, gender and arch width of all subjects were recorded. Intergroup comparison of pressure values was done using independent t-tests; where p-value <0.05 were considered as statistically significant. Correlations between upper and lower lip pressure, buccal pressure, arch width, upper and lower incisor angulation were carried out using Pearson?s correlation test.Results: Lower lip pressure was greater than upper lip pressure in all the subjects. Buccal pressure showed inverse relationship with maxillary arch width however the relationship was not significant. Maximum upper and lower lip pressure was observed in subjects with Angle?s Class II division 2 malocclusion.Conclusion: Lower lip and buccal pressure showed significant difference and hence are two chief causative factors associated with different malocclusions with minimal role of upper lip pressure. There was a moderately significant positive correlation between the upper lip pressure and the lower incisor angulation in Group III. There was no significant correlation between upper lip pressure and upper incisor angulation, lower lip pressure and upper and lower incisor angulation and buccal pressure and maxillary arch width.
机译：人们认为，在静止状态下，嘴唇，脸颊和舌头施加的力在影响牙齿和咬合不正中的作用比任何活动都更为重要。肌肉对骨骼的最终大小和形状起主要的形态发生作用。因此，在I类，II类和III类错牙合中，肌肉压力与结构构型之间可能存在某种关系。目的：评估各种错牙合中的口腔压力及其与门牙倾斜度和牙弓宽度的相关性。材料和方法：该描述性横断面研究是在哈里亚纳邦布德拉的SGT大学牙科学院正畸科进行的，目的是建立咬合不正和肌肉组织之间的相关性，该评估包括嘴唇和脸颊压力的评估。从2016年4月至2016年9月，在六个不同的错牙合畸形患者中进行了六个月的随访。在报告了三个月的正畸咨询的86个受试者中，他们的科室OPD中; 50名受试者（32名女性和18名男性）年龄段在12至20岁之间;建议进行固定的正畸治疗。在开始治疗之前，将他们选入本研究并根据其咬合状况分为三组。第I组（20个科目）作为Angle？s Class I;第二组（20名受试者）为安格斯II类1级（II / 1级）错牙合和第三组（10名受试者）为安格斯II级2类（II / 2级）错牙合。传感器厚度小于1毫米的力感测电阻器设备用于测量。传感器被放置在口腔内的不同位置，并带有一层薄薄的软蜡以稳定。嘴唇和脸颊在静止时进行唇唇和颊压的测量。记录所有受试者的压力值，头颅测量参数，性别和足弓宽度。组间压力值比较使用独立的t检验进行;其中p值<0.05被认为具有统计学意义。使用Pearson相关检验，对上下唇压力，颊压，牙弓宽度，上下门牙角度之间的相关性进行了研究。结果：所有受试者的下唇压力均大于上唇压力。颊压与上颌弓宽度呈反比关系，但关系不显着。安格斯（Angle）II级2类错牙合畸形患者观察到最大的上唇和下唇压力。结论：下唇和颊压表现出显着差异，因此是与不同的错牙合畸形相关的两个主要致病因素，上唇的作用最小压力。在第三组中，上唇压和下切牙成角度之间存在中等程度的正相关。上唇压力与上切牙成角度，下唇压力与上下切牙成角度与颊压力和上颌弓宽度之间无显着相关性。

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