成人における大陰唇対舌側バイオクリエイティヴ療法を用いた上顎前歯後退時の歯の移動の種類。無作為化臨床試験

Type of tooth movement during retraction of the maxillary anterior teeth using labial versus lingual biocreative therapy in adults: A randomized clinical trial.

• Mais M Sadek
• Noha E Sabet
• Islam T Hassan

抄録

目的:

この2群並行試験の目的は、上顎前歯を引っ込める際の歯の動きの種類を、舌側と舌側のバイオクリエイティヴ治療を用いて比較することであった。

Objective: The objective of this two-arm parallel trial was to compare the type of tooth movement during retraction of the maxillary anterior teeth using labial versus lingual biocreative therapy.

方法:

被験者28名を1:1の割合で大陰唇群と舌側群のどちらかに無作為に割り付けた．データ解析は、各群内での比較のためのペア検定と、2群間の平均治療変化の比較のための独立標本検定を用いて行った。

Methods: Twenty-eight subjects were randomized in a 1 : 1 ratio to either the labial or lingual group. anterior retraction was performed using labial biocreative therapy in group A and lingual biocreative therapy in group B. Cone beam computed tomography scans were taken before and after retraction and the primary outcome was the type of tooth movement during anterior retraction. Data were analyzed using paired -tests for comparisons within each group and independent-sample -test for comparison of the mean treatment changes between the two groups.

結果:

歯の移動の種類（中切歯の舌側傾斜；平均差5.85±1.85°）に関連して、両群間に有意差が認められた。犬歯は、舌側群で有意な遠位傾斜を示した（平均差、6.98±1.25°）。イヌは舌側群で有意に侵入していた(平均差1.67±0.49mm)。両群ともに良好なアンカレッジコントロールと有意な軟部組織の変化が生じた。重篤な副作用は検出されなかった。

Results: Significant differences were found between the two groups in relation to the type of tooth movement (labiolingual inclination of the central incisor; mean difference, 5.85 ± 1.85°). The canine showed significant distal tipping in the lingual group (mean difference, 6.98 ± 1.25°). The canine was significantly more intruded in the lingual group (mean difference, 1.67 ± 0.49 mm). Good anchorage control and significant soft tissue changes occurred in both groups. No serious adverse effects were detected.

結論:

10mmの引っ込みフックを用いた場合、リバースカーブオーバーレイを用いた大陰唇バイオクリエイティヴ法では、良好なトルクコントロールを伴う前歯の引っ込みが得られたが、舌側グループでは、遠位側への著しい転位と犬歯の侵入を伴う転位運動がコントロールされた状態で前歯の引っ込みが発生した（臨床試験登録）。本試験はClinicalTrials.gov [NCT03239275]に登録されています。)

Conclusions: With a 10-mm retraction hook, the labial biocreative technique with the reverse curve overlay provided anterior retraction with good torque control, while in the lingual group, anterior retraction occurred with controlled tipping movement with significant distal tipping and intrusion of the canine (trial registration: The trial was registered at ClinicalTrials.gov [NCT03239275]).

© 2019 The Korean Association of Orthodontists.