Angelieri F, Franchi L, Cevidanes L H S, Hino C T, Nguyen T, McNamara J A
Department of Orthodontics, Guarulhos University, Guarulhos, Brazil.
Department of Orthodontics and Pediatric Dentistry, School of Dentistry, The University of Michigan, Ann Arbor, MI, USA.
Orthod Craniofac Res. 2017 May;20(2):85-94. doi: 10.1111/ocr.12143.
The aim of this study was to present a method of classifying the maturational level of the zygomaticomaxillary sutures (ZMSs).
Cone-beam CT (CBCT) images from 74 subjects (5.6-58.4 years) were examined to define the radiographic stages of ZMS maturation. Five stages of maturation of the ZMS were identified and defined: Stage A-uniform high-density sutural line, with no or little interdigitation; Stage B-scalloped appearance of the high-density sutural line; Stage C-two parallel, scalloped, high-density lines, separated in some areas by small low-density spaces; Stage D-fusion in the inferior portion of the suture; and Stage E-complete fusion. Intra- and inter-examiner agreements were evaluated by weighted kappa tests.
The intra- and inter-examiners reproducibility values demonstrated substantial to almost perfect agreement. No fusion of ZMSs was observed in patients up to 10 years of age. From 10 to 15 years, all maturational stages were identified. After 15 years of age, the majority of patients showed fusion of ZMSs.
The classification of ZMS maturation using CBCT is a reliable method that allows the assessment of the morphology of the ZMSs in the individual patient.
本研究旨在提出一种对颧上颌缝（ZMS）成熟水平进行分类的方法。
对74名受试者（5.6 - 58.4岁）的锥形束CT（CBCT）图像进行检查，以确定ZMS成熟的影像学阶段。确定并定义了ZMS成熟的五个阶段：A期——均匀的高密度缝线，无或极少相互交错；B期——高密度缝线呈扇形外观；C期——两条平行的、扇形的高密度线，在某些区域被小的低密度间隙分隔；D期——缝线下部融合；E期——完全融合。通过加权kappa检验评估检查者内部和检查者之间的一致性。
检查者内部和检查者之间的重复性值显示出实质性到几乎完美的一致性。在10岁以下的患者中未观察到ZMS融合。10至15岁之间，识别出了所有成熟阶段。15岁以后，大多数患者出现ZMS融合。
使用CBCT对ZMS成熟进行分类是一种可靠的方法，可用于评估个体患者的ZMS形态。
