Faculdade São Leopoldo Mandic, Programa de Pós-Graduação em Ortodontia (Campinas/SP, Brazil).
Universidade de São Paulo, Faculdade de Odontologia de Bauru (Bauru/SP, Brazil). Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Programa de Pós-Graduação em Odontopediatria (Ribeirão Preto/SP, Brazil).
Dental Press J Orthod. 2021 Oct 25;26(5):e21ins5. doi: 10.1590/2177-6709.26.5.e21ins5. eCollection 2021.
Biologically explain some of the bone mechanisms involved in the intrusion, or intrusive effect, of teeth submitted to skeletal open bite correction using four miniplates.
The results of dental intrusion were measured and compared in 3D reconstructions of cone beam computed tomography scans taken before and after treatment of 20 patients with skeletal open bite, aged between 18 and 59 years.
The results allow deducing that the compression and traction forces biologically promoted deformation or deflection of the osteocyte network that controls bone design, and these effects involved the external and internal surfaces of the bone, with the formation of new layers, including the cervical portion of the alveolar bone crest. This helps understanding how dental intrusion occurs in intrusive mechanics, whose forces are of inclination rather than intrusion. The root resorptions caused by the use of miniplates were insignificant, due to the more homogeneous distribution of forces in the several teeth simultaneously involved.
Imaging studies in CT scans tend to capture in details the subperiosteal and endosteal phenomena of dental intrusion - before and after the application of intrusive mechanics -, in the form of a set of modifications called dental intrusion or intrusive effect .
利用 4 个微型钢板，从生物力学角度解释骨性开颌矫治中牙齿内收（或内收效果）的一些相关机制。
对 20 例年龄在 18 岁至 59 岁的骨性开颌患者进行治疗前后锥形束 CT 扫描的三维重建，测量并比较牙内收的结果。
结果表明，压缩和牵引生物力促使控制骨设计的骨细胞网络发生变形或偏斜，这些影响涉及骨的内外表面，形成新的骨层，包括牙槽嵴的颈部。这有助于理解在倾斜力而非内收力的作用下，牙齿内收是如何发生的。微型钢板的使用导致的牙根吸收并不明显，这是因为几个同时受累的牙齿中力的分布更加均匀。
CT 扫描的影像学研究倾向于详细捕捉骨皮质切开术和骨内膜术下牙齿内收的骨表面下和骨内现象——在应用内收力学前后——表现为一组称为牙齿内收或内收效果的改变。
