@article{oai:asahi-u.repo.nii.ac.jp:02000075,
 author = {牧野, 智咲 and MAKINO, CHISAKI and 佐橋, 喜志夫 and SABASHI, KISHIO and 服部, 修磨 and HATTORI, SHUUMA and 留, 和香子 and TOME, WAKAKO and 北井, 則行 and KITAI, NORIYUKI},
 issue = {1},
 journal = {岐阜歯科学会雑誌, The Journal of Gifu Dental Society},
 month = {Jun},
 note = {本研究の目的は、口唇の静的および動的な三次元形態と口唇閉鎖力との関連を検討することである。被験者は、顎顔面頭蓋の形成異常が認められず、顔の外傷および外科的手術の既往がない成人女性20名とした。それぞれの被験者について、多方位口唇閉鎖力測定装置を用いて口唇閉鎖力を測定した。8方向からの口唇閉鎖力はそれぞれ上、左上、左、左下、下、右下、右、右上口唇閉鎖力とし、左上、上および右上口唇閉鎖力の和を上口唇力、左下、下および右下口唇閉鎖力の和を下口唇力、8方向からの口唇閉鎖力の和を口唇総合力とした。顔面軟組織三次元画像データについては、非接触型三次元デジタルハンディカメラを用いて、安静時および口すぼめ時の顔面軟組織三次元画像を撮影し、2画像の重ね合わせを行った。鼻下点とオトガイ唇溝を通り正中矢状平面と垂直な平面を口唇基底平面と定義して、口唇基底面積を求めた。口唇基底平面より前方の上下口唇の表面積と体積を、口唇表面積、口唇体積とした。安静時と口すぼめ時の口唇表面積の差、安静時と口すぼめ時の口唇体積の差を、それぞれ口唇表面積変化量、口唇体積変化量とした。上口唇力、下口唇力、口唇総合力のそれぞれと、口唇基底面積、口唇表面積変化量および口唇体積変化量との間で、Pearsonの相関係数を求めた。口唇基底面積と口唇表面積変化量については、上口唇力、下口唇力および口唇総合力との間に、有意な相関は認められなかった。口唇体積変化量と上口唇力および下口唇力との間に有意な相関は認められなかったが、口唇総合力と口唇体積変化量との間に有意な正の相関が認められた。以上の結果から、口唇閉鎖力は、安静時から口すぼめ時に生じる三次元形態の変化と関連していることが示された。, The objective of this study is to examine the relationship between the static and dynamic three-dimensional morphology of the lips and lip-closing force. The subjects were 20 adult women with no cranio-maxillofacial dysplasia and no anamnesis of facial trauma or surgery. For each subject, lip-closing force was measured using a multidirectional lip-closing force measurement system. The lip-closing forces from eight directions were upper, upper left, left, lower left, lower, lower right, right, and upper right lip-closing forces, respectively, and the sum of upper left, upper and upper right lip-closing forces was defined as upper lip force, the sum of lower left, lower and lower right lip-closing forces was defined as lower lip force, and the sum of lip-closing forces from 8 directions was defined as total lip force. Three-dimensional facial soft tissue image data were using a non-contact three-dimensional digital handheld camera, which took three-dimensional facial images at rest and with lips pursed, and the two images were superimposed. The lip basal plane was defined as the plane perpendicular to the mid-sagittal plane passing through the subnasal point and the mentolabial sulcus, and the lip basal area was calculated. The surface area and volume of the upper and lower lips anterior to the lip basal plane were defined as lip surface area and lip volume, respectively. The difference between the lip surface area at rest and with lip pursed was defined as the amount of change in lip surface area, also the difference between the lip volume at rest and with the lip pursed was defined as the amount of change in lip volume. Pearson’s correlation coefficient was calculated between upper lip force, lower lip force, and total lip force, and the lip basal area, the amount of change in lip surface area, and the amount of change in lip volume, respectively. No significant correlation was found for the lip basal area and the amount of change in lip surface area with upper lip force, lower lip force, and total lip force. No significant correlation was found between the amount of change in lip volume and upper and lower lip force, but a significant positive correlation was found between the amount of change in lip volume and total lip force. These results indicate that lip-closing forces are associated with changes in three -dimensional morphology that occur when lip pursed from at rest.},
 pages = {21--28},
 title = {口すぼめ時の口唇三次元形態と多方位口唇閉鎖力との関係},
 volume = {50},
 year = {2023}
}