Department of Orthodontics and Dentofacial Orthopedics, SCB Dental college and Hospital, Cuttack, Odisha, India.
Department of Orthodontics and Dentofacial Orthopedics, SCB Dental college and Hospital, Cuttack, Odisha, India.
J World Fed Orthod. 2023 Oct;12(5):197-206. doi: 10.1016/j.ejwf.2023.06.001. Epub 2023 Aug 8.
The purpose of this study was to compare the success rate of infrazygomatic mini-implants between adolescents and young adults.
A total of 60 subjects of different age groups ie, (group I [adolescents]: 12-18 years, mean age: 14.9 ± 2.9 years; group II [young adults]: 19-25 years, mean age = 21.9 ± 3.1 years) were assessed in the study. En-masse retraction of maxillary anterior teeth was carried out with extraction of upper first premolars with infrazygomatic crest (IZC) mini-implants as anchorage units. Clinical parameters such as success rate, soft tissue thickness, maximum insertion torque, maximum removal torque, pain response, soft tissue response, and cone-beam computed tomography parameters such as embedded angulation, penetration depth, thickness of bone on buccal and palatal aspect of mini-implant, and peri-implant bone density were evaluated.
The success rate of IZC mini-implants in adolescents was found to be 96.6% and 98.3% in young adults respectively. There was no significant difference in success rate between the two groups. Intergroup comparison showed a significant difference (P < 0.05) in terms of maximum insertion torque, maximum removal torque, soft tissue thickness, cortical bone thickness, and peri-implant bone density values. Comparison between right and left side revealed a significant difference (P < 0.05) with regards to soft tissue response, soft tissue thickness, total bone thickness, cortical bone thickness, and peri-implant bone density.
There was no significant difference in the success rate of IZC mini-implants between adolescents and young adults. Thus, the use of IZC mini-implants can be recommended in adolescents for successful orthodontic treatment.
本研究旨在比较青少年和年轻成人患者在下颌支迷你种植体的成功率。
共有 60 名不同年龄组别的受试者参与了这项研究，即（I 组[青少年]：12-18 岁，平均年龄：14.9 ± 2.9 岁；II 组[年轻成人]：19-25 岁，平均年龄为 21.9 ± 3.1 岁）。使用下颌支迷你种植体作为支抗单位，通过拔除上颌第一前磨牙进行上颌前牙整体内收。评估临床参数，如成功率、软组织厚度、最大植入扭矩、最大移除扭矩、疼痛反应、软组织反应，以及锥形束计算机断层扫描参数，如植入角度、植入深度、种植体颊侧和腭侧骨厚度、种植体周围骨密度。
青少年患者的 IZC 迷你种植体成功率为 96.6%，年轻成人的成功率为 98.3%。两组之间的成功率无显著差异。组间比较显示，在最大植入扭矩、最大移除扭矩、软组织厚度、皮质骨厚度和种植体周围骨密度方面存在显著差异（P < 0.05）。右侧和左侧之间的比较显示，在软组织反应、软组织厚度、总骨厚度、皮质骨厚度和种植体周围骨密度方面存在显著差异（P < 0.05）。
青少年和年轻成人患者在下颌支迷你种植体的成功率无显著差异。因此，建议在青少年中使用 IZC 迷你种植体进行成功的正畸治疗。
