Grave Keith, Townsend Grant
Dental School, The University of Adelaide, South Australia, Australia.
World J Orthod. 2005 Winter;6(4):331-42.
To show that starting treatment of Class II malocclusions around the time of peak height velocity at adolescence enables the orthopedic and fixed appliance steps to be merged into a single continuous phase, leading to good outcomes with long-term stability.
Seven patients with Class II malocclusions began treatment in the mid- 1960s with cervical headgear and bite plate, followed immediately by fixed appliances. Photographs and study casts were obtained for the same 7 patients approximately 40 years later.
The stability of individual cases was considered to be good over the 40-year period. Crowding changes in the mandibular incisor region were minimal.
A two-step single-phase treatment for Cass II malocclusions during adolescence has proved to be an efficient approach throughout many years of orthodontic practice. Furthermore, by using ossification markers, the individual child's growth potential can be estimated. This knowledge leads to greater efficiency by developing a positive, purposeful, and more confident approach to the management of Class II cases.
证明在青春期身高增长高峰期左右开始治疗II类错牙合畸形，可使矫形和固定矫治器阶段合并为一个连续的阶段，从而获得具有长期稳定性的良好治疗效果。
7例II类错牙合畸形患者于20世纪60年代中期开始使用颈带式矫治器和咬合板进行治疗，随后立即使用固定矫治器。大约40年后，对这7例患者再次获取照片和研究模型。
在40年的时间里，各病例的稳定性良好。下颌切牙区的拥挤变化最小。
在多年的正畸实践中，青春期II类错牙合畸形的两步单相治疗已被证明是一种有效的方法。此外，通过使用骨化标记物，可以估计个体儿童的生长潜力。通过对II类病例的管理采用积极、有针对性和更自信的方法，这一知识可提高治疗效率。
