インビザライン

インビザラインの歯根吸収、歯科用CT調査研究(2021)

今回は、Angle Orthodontistに2021年に投稿された「Volumetric cone-beam computed tomography evaluation and risk factor analysis of external apical root resorption with clear aligner therapy.」をご紹介します。

インビザライン歯根吸収の論文詳細

【タイトル】

Volumetric cone-beam computed tomography evaluation and risk factor
analysis of external apical root resorption with clear aligner therapy.

【著者】Wei Liu; Juhua Shao; Shufang Li; Maher Al-balaa; Lulu Xia; Hanyue Li; Xianming Hua

【雑誌名】Angle Orthodontist, Vol 91, No 5, 2021

DOI: 10.2319/111820-943.1

インビザライン歯根吸収の要約

目的

クリアアライナ治療において、歯科用CTを用いて歯根吸収(EARR)の有病率と重症度を調査し、EARR発症の危険因子を特定しEARRの予測モデルを開発することである。

方法

クリアアライナー(インビザライン)治療の患者40名(クラスⅡ)の320本を対象と下後ろ向き研究である。

治療前(T0)と治療後(T1)に撮影した歯科用CT画像を用いた。

歯根の体積は歯科用CT画像を重ね合わせ計測した。

歯根体積の変化を対応のあるt検定で比較した。歯根体積の危険因子を特定するために重回帰分析を行った。

結果

測定したすべての歯で歯根体積の減少が見られた。

平均11.48±6.70㎣、重度の歯根吸収の有病率は0.625%であった。

年齢、性別、治療期間、治療前のSRPをモデルから除外した結果、EARRの発症は、治療後のSRP、抜歯、歯の種類、根尖の動きで説明された(R²=.51).

結語

アライナー治療におけるほとんどの切歯は軽度から中等度の歯根吸収を示し、重度の歯根吸収を示す割合はごくわずかであった。

治療後のSRP(最もEARRとの関連が強い )、抜歯、歯の種類、圧下と挺出はEARRの危険因子であることが示された。

インビザライン歯根吸収の論文を今すぐ読む!

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記事監修

Dr. 堀井和宏(Kazuhiro Horii)

日本矯正歯科学会・臨床指導医(旧専門医)

American Association of Orthodontists

滋賀県大津市粟津町4-7

ほりい矯正歯科クリニック

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