Gracco Antonio, Luca Lombardo, Cozzani Mauro, Siciliani Giuseppe
Department of Orthodontics, University of Ferrara, Ferrara, Italy.
Aust Orthod J. 2007 Nov;23(2):109-13.
To determine the most suitable region of the palate for the insertion of miniscrews.
The subjects were 72 adult patients between 20 and 44 years of age. The thickness of the bony palate was determined with digital volumetric tomography. Bone thickness was measured 4, 8, 16 and 24 mm posterior to the incisive foramen and 0, 3, and 6 mm lateral to the midline of the palate.
The thickest bone was found 4 mm behind and 6 mm lateral to the incisive foramen. The bone thinned progressively from anterior to posterior and from medial to lateral. A median ridge of bone was present in the 8, 16 and 24 mm sections. In these sections the thickest bone was close to the suture.
The hard palate offers several suitable sites for the insertion of miniscrews for orthodontic purposes. The areas behind the incisive foramen and to one side of the median palatal suture have adequate bone for miniscrews.
确定腭部最适合植入微型螺钉的区域。
研究对象为72名年龄在20至44岁之间的成年患者。采用数字容积断层扫描测定腭骨厚度。在切牙孔后方4、8、16和24毫米处以及腭中线外侧0、3和6毫米处测量骨厚度。
在切牙孔后方4毫米且外侧6毫米处发现最厚的骨。骨厚度从前向后、从内侧向外侧逐渐变薄。在8、16和24毫米的切片中有一条骨嵴。在这些切片中，最厚的骨靠近缝线。
硬腭为正畸目的植入微型螺钉提供了几个合适的部位。切牙孔后方及腭中缝一侧的区域有足够的骨来植入微型螺钉。
