用于正畸微型种植体植入的最远端腭皱襞。

The most distal palatal ruga for placement of orthodontic mini-implants.

作者信息

Hourfar Jan, Ludwig Björn, Bister Dirk, Braun Anna, Kanavakis Georgios

机构信息

*Private Practice, Reinheim, Germany, **Department of Orthodontics, University of Heidelberg, Heidelberg, Germany.

***Private practice, Traben-Trarbach, Germany, ****Department of Orthodontics, University of Homburg/Saar, Homburg/Saar, Germany.

出版信息

Eur J Orthod. 2015 Aug;37(4):373-8. doi: 10.1093/ejo/cju056. Epub 2014 Oct 21.

DOI:10.1093/ejo/cju056

PMID:25336563

Abstract

OBJECTIVE

To evaluate the stability and bone availability of the most distal (third) palatal ruga, as an anatomical region for safe insertion of orthodontic mini-implants (OMIs) in the anterior palate.

STUDY DESIGN

Orthodontic records of 35 patients were analysed. Initial (T1) and final (T2) study models were bisected and the outline of the palatal contour was marked on the surface. Models were scanned and the palatal contours were superimposed on the palatal structures on the respective initial and final cephalometric images. Cephalometric measurements were used to assess vertical (3rdRug-PP, 2ndRug-PP, and 1stRug-PP), and oblique bone levels (3rdRug-U1, 2ndRug-U1, 1stRug-U1, and 3rdRug-U1(o)). Paired Student's t-test was used to compare measurements between T1 and T2.

RESULTS

The position of the third palatal ruga remained stable during orthodontic treatment (Δ2ndRug-3rdRug P = 0.1mm; P = 0.61 and Δ1stRug-3rdRug P = 0.2mm; P = 0.39). Bone availability also remained adequate (3rdRug-U1T2 (o) = 9.9mm).

CONCLUSION

The third palatal ruga is a reliable clinical landmark to evaluate bone availability for the placement of OMIs in the anterior palate.

摘要

目的

评估最远端（第三）腭皱襞作为在前腭安全植入正畸微型种植体（OMIs）的解剖区域的稳定性和骨可用性。

研究设计

分析了35例患者的正畸记录。将初始（T1）和最终（T2）研究模型对半切开，并在表面标记腭轮廓的轮廓。对模型进行扫描，并将腭轮廓叠加在各自初始和最终头影测量图像上的腭结构上。使用头影测量法评估垂直（第三腭皱襞-腭平面、第二腭皱襞-腭平面和第一腭皱襞-腭平面）和斜向骨水平（第三腭皱襞-上切牙、第二腭皱襞-上切牙、第一腭皱襞-上切牙和第三腭皱襞-上切牙（o））。采用配对学生t检验比较T1和T2之间的测量值。