Department of Stomatology, The Third Affiliated Hospital of Sun Yat-Sen University. Guangzhou, Guangdong, China.
Department of Pediatric Dentistry, Affiliated Stomatology Hospital of Southern Medical University. Guangzhou, Guangdong, China.
Medicine (Baltimore). 2024 Jul 5;103(27):e38742. doi: 10.1097/MD.0000000000038742.
In orthodontic treatment of patients during the mixed dentition period, arch expansion and opening deep overbite are one of the objectives to achieve proper alignment of the teeth and correction of sagittal and vertical discrepancies. However, the expected outcomes of most therapeutic regimens are not clear, making it impossible to standardize early treatment effects. Therefore, this study was designed to evaluate the impact of the Invisalign® First System on the dental arch circumference and incisor inclination in patients during the mixed dentition period. A total of 21 children during the mixed dentition period (10 females and 11 males, with an average age of 8.76 years) were included in this study. The patients received non-extraction treatment through Invisalign® First System clear aligners, and no other auxiliary devices were used except Invisalign® accessories. Subsequently, the cooperation degree of patients during treatment and the oral measurement parameters at the beginning (T1) and the end (T2) of treatment were collected. All patients showed moderate/good cooperation degree during treatment. Besides, horizontal width of the maxillary first molar increased significantly; the designed arch expansion was 4.1 mm (±1.4 mm), while the actual arch expansion was 3.0 mm (±1.7 mm). Furthermore, the torque expression rate of upper anterior teeth reached 56.53%. Invisalign® First System clear aligners can effectively correct the teeth of patients during the mixed dentition period, widen the circumference of dental arch, and control the torque of incisors.
在混合牙列期患者的正畸治疗中，扩弓和打开深覆合是实现牙齿排列整齐和矫正矢状及垂直不调的目标之一。然而，大多数治疗方案的预期效果并不明确，因此无法标准化早期治疗效果。因此，本研究旨在评估 Invisalign® First 系统对混合牙列期患者牙弓周长和切牙倾斜度的影响。本研究共纳入 21 名混合牙列期的儿童（10 名女性，11 名男性，平均年龄 8.76 岁）。这些患者通过 Invisalign® First 系统透明矫治器接受非拔牙治疗，除了 Invisalign®附件外，未使用任何其他辅助装置。随后，收集了患者在治疗过程中的配合程度以及治疗开始时（T1）和结束时（T2）的口腔测量参数。所有患者在治疗过程中均表现出中度/良好的配合程度。此外，上颌第一磨牙的水平宽度显著增加；设计的牙弓扩展量为 4.1mm（±1.4mm），而实际牙弓扩展量为 3.0mm（±1.7mm）。此外，上颌切牙转矩表达率达到 56.53%。Invisalign® First 系统透明矫治器可以有效矫正混合牙列期患者的牙齿，扩宽牙弓周长，并控制切牙的转矩。
