アブストラクト(52巻1/2号:神奈川歯学)

神奈川歯学

Japanese

Title : 神奈川歯科大学附属病院矯正科における非抜歯矯正歯科治療前後の口唇周囲軟組織の評価
Subtitle : 原著
Authors : 秋葉夢乃, 岩田敏男, 小泉創, 三宅真次郎, 河田俊嗣
Authors(kana) :
Organization : 神奈川歯科大学口腔機能修復学講座歯科矯正学
Journal : 神奈川歯学
Volume : 52
Number : 1/2
Page : 7-13
Year/Month : 2017 / 12
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」 矯正歯科治療は, 不正咬合がもたらす摂食, 咀嚼, 発音などの顎口腔機能の障害および審美性が損なわれることによる社会的, 心理的障害を予防, 抑制, 回復することにより, 患者の健康およびQuality of lifeの向上に資することを目的とした医療である. そのため, 矯正歯科治療の治療目標は不正咬合を改善し, 予後の咬合の安定を獲得すると同時に審美的改善も考慮される. 我々矯正歯科医師は, この治療目標を達成するために, 顎顔面頭蓋部における硬組織分析のみならず軟組織の分析も行なっている. そして治療計画を立案する際に, 分析結果から小臼歯の便宜抜去を行う症例(抜歯治療)もある. しかし, この小臼歯抜去の頻度は時代とともに変遷しており, Edgewise装置が開発された1900年初頭においては, 小臼歯抜歯はほとんど行なわれなかった. その後1930年以降には予後の安定と審美性の獲得を重視したTweedにより抜歯治療が提唱され, その頻度が飛躍的に増加した.
Practice : 歯科学
Keywords : 非抜歯矯正歯科治療, 口唇周囲軟組織

English

Title : Evaluation in soft tissue before and after treatment in the non-extraction orthodontic treatment in Kanagawa Dental University Department of Orthodontics
Subtitle :
Authors : Yumeno AKIBA, Toshio IWATA, So KOIZUMI, Shinjiro MIYAKE, Toshitugu KAWATA
Authors(kana) :
Organization : Division of Orthodontics, Department of Oral Function & Restoration, Graduate School of Dentistry, Kanagawa Dental University
Journal : Kanagawa Shigaku
Volume : 52
Number : 1/2
Page : 7-13
Year/Month : 2017 / 12
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : [Abstract] The aims of orthodontic treatment are to improve malocclusion, gain prognostic stability, and achieve aesthetic improvement. However, the Japanese had viewed these studies negatively due to prejudice against using medicine for aesthetic improvement. Therefore, in this study, we examined the dentofacial changes before and after treatment in malocclusion patients treated without premolar extraction. Twenty-seven adult patients, who were classified as Skeletal Class I and treated with non-extraction at Kanagawa Dental University Hospital Department of Orthodontics, were used as subjects. We measured and compared the lateral roentgenographic cephalogram and oral models of the subjects before and after treatment. The skeletal changes included an increase in ANB. The dental changes included the following: the mandibular anterior teeth inclined towards the labial side; and both the upper and lower intercanine width increased. No significant differences were observed in any measurements of the soft tissues. Several studies have reported that the morphological features that most affects the facial profile are the lips. In addition, it is believed that the position and inclination of the upper and lower incisors affect the form and position of the lips. In this study, it was assumed that the position of the maxillary incisors did not change because there were no significant differences in the U1 to FH, U1 to SN, U1 to N-FH vertical, U1 to NP plane and U1 to APO plane. There were no improvements in the soft tissue measurements. In conclusion, the present results suggest that in non-extraction treatment, it is difficult to move to the lingual side of the upper and lower anterior teeth; thus, soft tissue cannot be drastically changed.
Practice : Dentistry
Keywords :