Dentistry "Na Biskupinie", Orthodontic Office, Wrocław, Poland.
Department of Maxillofacial Orthopedics and Orthodontics, Division of Facial Abnormalities, Wrocław Medical University, Wrocław, Poland.
J Healthc Eng. 2020 Oct 9;2020:8887182. doi: 10.1155/2020/8887182. eCollection 2020.
Functional treatment is the type of treatment preferred in young patients with lateral bite because it leads to simultaneous improvement of occlusion and facial profile.
The aim of this study is to assess bone changes within the condylar process of the mandible and to associate them with the changes observed in the analysis of lateral cephalograms and in the patient's occlusion.
Cone beam tomography of the temporomandibular joint, lateral radiogram of the skull, was performed at the beginning of treatment and after one year of therapy. Changes in cephalometric radiograms were evaluated by analyzing them and shown by making superimposition and staining layers. For the purpose of assessing bone changes within the condylar process, digital 3D solids of these processes were generated using data from computed tomography.
Correction towards Angle's dental class I, overjet reduction from 8 mm to 3 mm, and improvement of the patient's profile were obtained. A rotation of the occlusal plane and improvement in an ANB by 1° and in the WITS measurement by 2.7 mm were observed. A growth of the condylar processes "backwards" and "upwards" was also observed, as well as a change of their shape and volume.
The obtained results suggest that the patient's significant improvement in occlusal conditions is due to posterior growth stimulation of the condylar processes of the mandible. The results confirm the validity of using this treatment technique in the case of growing children with complete posterior occlusion.
功能治疗是治疗侧向咬合年轻患者的首选治疗方法，因为它可以同时改善咬合和面部轮廓。
本研究旨在评估下颌髁突内的骨变化，并将其与侧颅侧片分析和患者咬合中观察到的变化相关联。
在治疗开始时和治疗一年后，对颞下颌关节进行锥形束断层扫描，对头颅侧位片进行拍摄。通过分析侧颅侧片并通过叠加和分层显示来评估头影测量片的变化。为了评估髁突内的骨变化，使用计算机断层扫描的数据生成这些过程的数字 3D 实体。
获得了朝向安氏牙齿分类 I 的矫正、从 8mm 减少到 3mm 的覆盖、以及患者轮廓的改善。观察到咬合平面的旋转以及 ANB 增加 1°和 WITS 测量增加 2.7mm。还观察到髁突的“向后”和“向上”生长，以及其形状和体积的变化。
获得的结果表明，患者的咬合条件显著改善是由于下颌髁突的后向生长刺激所致。结果证实了在完全后牙咬合的生长儿童中使用这种治疗技术的有效性。
