Olszewski Raphael, Issa Julien, Odri Guillaume-Anthony
Department of Oral and Maxillofacial Surgery, Cliniques Universitaires Saint Luc, UCLouvain, Av. Hippocrate 10, 1200 Brussels, Belgium.
Oral and Maxillofacial Surgery Research Lab (OMFS Lab), NMSK, Institut de Recherche Expérimentale et Clinique, UCLouvain, 1200 Brussels, Belgium.
Diagnostics (Basel). 2023 Sep 21;13(18):3009. doi: 10.3390/diagnostics13183009.
The objectives of this retrospective study were to measure the prevalence of complete ponticulus posticus (CPP), to propose a new classification based on two different shapes of CPP, to compare these shapes with age and gender, and to test two different methods of measurements of the diameters of CPP on cone beam computed tomography (CBCT).
We used 2012 CBCT scans from Planmeca Promax 3D Mid and Romexis 5.1 software tools to measure the height and width of the CPP, and we measured the surface of the CPP using an ellipse tool. We classified the CPP into "thin" and "thick" shape.
the prevalence of CPP was 9.49% with 97 male and 94 female patients. The unilateral type was found in 131 patients, while the bilateral type was found in 60 patients. Intra-observer reliability was evaluated using the intraclass correlation coefficient (ICC). The ICC was 0.875 for height, 0.872 for width, and 0.885 for the ellipse area. Both methods present very good intra-observer reproducibility. The "thin" group tended to be older and significantly more related to female patients. The "thick" group was associated with younger male patients.
the proposed classification of CPP may be used when reporting the CBCT large field of view. There is still a need to increase the knowledge on the atlas and on its main variant, such as complete PP.
本回顾性研究的目的是测量完全后小桥（CPP）的患病率，基于CPP的两种不同形状提出一种新的分类方法，将这些形状与年龄和性别进行比较，并在锥形束计算机断层扫描（CBCT）上测试两种测量CPP直径的不同方法。
我们使用来自Planmeca Promax 3D Mid和Romexis 5.1软件工具的2012份CBCT扫描来测量CPP的高度和宽度，并使用椭圆工具测量CPP的表面积。我们将CPP分为“薄”型和“厚”型。
CPP的患病率为9.49%，男性患者97例，女性患者94例。单侧型在131例患者中发现，双侧型在60例患者中发现。使用组内相关系数（ICC）评估观察者内可靠性。高度的ICC为0.875，宽度的ICC为0.872，椭圆面积的ICC为0.885。两种方法均具有非常好的观察者内可重复性。“薄”组倾向于年龄较大，且与女性患者显著相关。“厚”组与年轻男性患者相关。
在报告CBCT大视野时可使用所提出的CPP分类方法。仍需要增加对图谱及其主要变体（如完全PP）的了解。
