日本語AIでPubMedを検索
口腔内睡眠時無呼吸装置による治療中の下切歯不整の変化
Changes in lower incisor irregularity during treatment with oral sleep apnea appliances.
PMID: 28116544 PMCID: PMC5585282. DOI: 10.1007/s11325-016-1456-3.
抄録
目的:
本研究の目的は、閉塞性睡眠時無呼吸症候群（OSA）の治療を受けた患者において、切歯被覆（OA）のない柔軟性のある口腔内装置が、切歯被覆（OA）のある硬性の装置と比較して前歯の不規則性を増加させるという仮説を検証することである。
PURPOSE: The purpose of this study is to test the hypothesis that a flexible oral appliance without incisor coverage (OA) increases the irregularity of the front teeth compared with a rigid appliance with incisor coverage (OA) in patients treated for obstructive sleep apnea (OSA).
方法と患者:
年齢中央値61歳（IQR56～67歳）で治療期間中央値2.9歳（IQR2.7～3.1歳）のOA使用経験者19人（男性10人）と、治療期間中央値2.9歳（IQR2.7～3.1歳）のOA使用経験者22人（男性19人）を対象とした。年齢（p=0.601）や治療期間（p=0.432）には両群間に差はなかった。患者は臨床検査を受け、問診票に回答し、石膏模型用の印象採得を行った。前歯の不規則性は、すべての前歯の総直線的な変位を合わせて評価するLittle's Indexで測定した。ベースラインとフォローアップ時の変化を両群間で比較した。
METHOD AND PATIENTS: Nineteen patients (10 men) who had used OA and 22 patients (19 men) who had used OA with a median age of 61 years (IQR of 56 to 67 years) who had been treated during a median period of 2.9 years (IQR of 2.7 to 3.1 years) were included in the study. There was no difference in age (p = 0.601) or treatment time (p = 0.432) between the two appliance groups. The patients had clinical examinations, responded to a questionnaire, and had impressions taken for plaster casts. The irregularity of the front teeth was measured by Little's Index, where the combined linear displacement of all the front teeth is assessed. Changes between baseline and follow-up were compared between the two groups.
結果:
OA群では下前歯の不規則性が0.3mm増加した（p=0.018）のに対し、OA群では前歯の不規則性に変化はなかった（p=0.717）。両群間の差は有意であった（p=0.035）。いずれの群でも上前歯の不規則性に変化は見られなかった。治療に対する患者の満足度は両群間で差がなかった。
RESULTS: The OA group increased the irregularity of their lower front teeth by 0.3 mm (p = 0.018), while the OA group had unchanged frontal irregularity (p = 0.717). The difference between the groups was significant (p = 0.035). There were no changes in the irregularity of the upper front teeth in either group. Patient satisfaction with treatment did not differ between the two appliances.
結論:
本研究の結果は、切歯被覆のない柔軟性のあるOAは、切歯被覆のある硬性のOAに比べて下前歯の凹凸が増加するという仮説を支持するものである。
CONCLUSIONS: The present results support the hypothesis that a flexible OA without incisor coverage increases the irregularity of the lower front teeth compared with a rigid OA with incisor coverage.