Wearing complete dentures is associated with changes in the three-dimensional shape of the oropharynx in edentulous older people that affect swallowing
Wearing complete dentures is associated with changes in the three-dimensional shape of the oropharynx in edentulous older people that affect swallowing
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DOI：
10.1111/ger.12197
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发表时间：
2016-12-01
期刊：
影响因子：
2
通讯作者：
Kondo, Hisatomo
中科院分区：
文献类型：
--
作者：
Furuya, Junichi;Tamada, Yasushi;Kondo, Hisatomo
目的探讨无牙颌老年人戴全口义齿后咽部形态对吞咽功能的影响。背景无牙颌老年人在无全口义齿的情况下，往往会失去下颌定位所需的咬合支持，导致吞咽时下颌前上移位。这可能会导致咽部形状的变化，影响老年人的吞咽功能。然而，这种现象的细节目前尚不清楚。材料和方法参与者是17个老年无牙颌志愿者。锥形束计算机断层扫描成像进行了参与者在坐姿和佩戴（i）上颌和下颌义齿，（ii）上颌义齿和（iii）没有义齿。在成像过程中，参与者被指示保持他们的嘴关闭到下颌位置，在吞咽过程中预先确定的每一个假牙佩戴条件。结果口腔和咽部的垂直高度在不戴义齿的情况下明显降低，而口咽部的体积和平均横截面积在不戴义齿的情况下明显增加（P < 0. 05）。
ObjectiveTo investigate the effects of wearing complete dentures on pharyngeal shape for swallowing in edentulous older people.BackgroundIn the absence of complete dentures, edentulous older people often lose the occlusal support necessary to position the mandible, which leads to an anterosuperior shift of the mandible during swallowing. This may result in pharyngeal shape changes effecting swallowing function in older people. However, the details of this phenomenon are currently unclear.Materials and methodsParticipants were 17 older edentulous volunteers. Cone-beam computed tomography imaging was performed with the participant in the seated position and wearing (i) both maxillary and mandibular dentures, (ii) maxillary dentures only and (iii) no dentures. During imaging, participants were instructed to keep their mouth closed to the mandibular position determined in advance during swallowing for each denture-wearing condition. The volume, height and average cross-sectional area of the velopharynx and oropharynx were measured, and the positions of the epiglottis and mandible were recorded.ResultsWhile the vertical height of the oral cavity and pharynx significantly decreased, the volume and average cross-sectional area of the oropharynx significantly increased when dentures were not worn (p