Li Chenzhi, Yuan Xiao, Ren DaPeng
Department of Orthodontics, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
School of Stomatology, Qingdao University, Qingdao, 266023, China.
BMC Oral Health. 2025 Jul 2;25(1):1044. doi: 10.1186/s12903-025-06461-w.
Malocclusion may lead to the development of occlusal trauma, which can exacerbate periodontal disease. Here, we present a skeletal Class II adult patient with occlusal traumatic periodontitis of upper incisors, who was treated with a two-phased orthodontic treatment. In the first phase, a Twin Block appliance (TBA) was used to increase the vertical dimension of the posterior teeth, to eliminate the anterior occlusal trauma. In addition, TBA also improved mandibular retrusion by forwarding the mandible. In the second phase of fixed orthodontics, occlusion was fine-tuned with infrazygomatic crest (IZC) miniscrews and Class II intermaxillary elastics. At the end of treatment, anterior occlusal trauma was eliminated, periodontal conditions of upper incisors were improved, a stable occlusion and a harmonious profile were obtained. The successful two-phased orthodontic treatment showed that the TBA can effectively eliminate anterior occlusal trauma through restoration of posterior vertical dimension, and can improve mandibular retrusion by forwarding mandible and reconstructing stable occlusion in adult patient.
错牙合畸形可能导致牙合创伤的发生，而牙合创伤会加重牙周疾病。在此，我们展示一位患有上颌切牙牙合创伤性牙周炎的成人骨性II类患者，其接受了两阶段正畸治疗。在第一阶段，使用双阻板矫治器（TBA）增加后牙的垂直高度，以消除前牙牙合创伤。此外，TBA还通过前伸下颌改善了下颌后缩。在固定正畸的第二阶段，使用颧下嵴（IZC）微型螺钉和II类颌间弹力牵引对咬合进行精细调整。治疗结束时，消除了前牙牙合创伤，改善了上颌切牙的牙周状况，获得了稳定的咬合和协调的面型。成功的两阶段正畸治疗表明，TBA可通过恢复后牙垂直高度有效消除前牙牙合创伤，并可通过前伸下颌和重建稳定咬合来改善成人患者的下颌后缩。
