下顎の胎児期成長のマッピング
Cornelis Klop1, Ruud Schreurs1,2, Ailin M J Ackermans3,4
1Department of Oral and Maxillofacial Surgery, Amsterdam UMC, Academic Centre for Dentistry Amsterdam (ACTA), Amsterdam Movement Sciences, University of Amsterdam, Amsterdam.
The Journal of craniofacial surgery
|January 22, 2026
まとめ
本研究は、胎児期の下顎骨の発育に関する標準データを確立し、初期胚発生期から胎児後期の主要測定値の成長曲線を提供する。これらのデータは、頭蓋顔面異常の検出や法医学的調査における年齢推定に役立つ。
科学分野:
- 頭蓋顔面の発育;胎児期診断;形態計測学
背景:
- 頭蓋顔面異常の診断には、胎児期の下顎骨の発育の正確な評価が不可欠である。;初期発育段階における下顎骨の形態計測に関する既存の標準データは限られている。
研究 の 目的:
- 胎児期の下顎骨の発育における主要な形態計測値の包括的な標準データセットを確立する。;ヒト下顎骨の発育傾向を評価するための成長曲線を作成する。
主な方法:
- 42例のヒト胎児および胎児標本（妊娠8～37週）の分析。;組織学的、マイクロCT、またはMDCT画像を用いた下顎骨のセグメンテーション。;14個のランドマークのアノテーションにより、下顎骨幅、下顎枝高、下顎角などの測定値を取得した。
主要な成果:
- 下顎骨の骨化は、カーネギー段階19（妊娠8週4日）から観察された。;妊娠週齢と下顎骨の線形測定値との間に強い有意な相関が見られた（R2>0.95）。;下顎角と妊娠週齢との間に中程度の有意な逆相関が見られた（R2=0.65）。
結論:
- 胎児期の下顎骨の発育に関する包括的な標準参照データを提供する。;成長曲線は、頭蓋顔面異常の胎児期診断をより早期かつ正確に行うのに役立つ可能性がある。;標準データは、法医学的および考古学的な文脈における年齢推定を支援する可能性がある。
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