Iseri H, Solow B
Department of Orthodontics, School of Dentistry, University of Ankara, Turkey.
Eur J Orthod. 1996 Jun;18(3):245-56. doi: 10.1093/ejo/18.3.245.
The aim of this study was to describe the average and individual patterns of continued eruption of the maxillary incisors and first molars in a longitudinal sample of girls. The sample comprised 14 series of lateral cephalometric films of girls, obtained from the archives of the implant study of Björk (1968). All subjects had bilateral posterior maxillary implants and one or two anterior maxillary implants. Subjects with craniofacial anomalies were excluded. The sample represented various types of malocclusions, but records during periods of orthodontic treatment were excluded from the calculation of average data and average curves. The final sample comprised 147 radiographs in the age range 9-25 years. Data were debugged by comprehensive numerical and graphical procedures. The average cumulative continued eruption from 9-25 years of age was 6 mm downwards and 2.5 mm forwards for the upper incisors, and 8 mm downwards and 3 mm forwards for the upper first molars. This resulted in an average reduction of the occlusal plane inclination (OLs/IPLs) of 4.5 degrees from 9-16 years. Attention is drawn to the fact that due to the continued eruption of the natural teeth, the use of osseointegrated implants with artificial teeth should not be recommended in childhood, adolescence, and early adulthood, unless special provision is made for later revision or replacement of the artificial teeth to compensate for the lack of continued eruption of such implants.
本研究的目的是描述一组纵向观察的女孩样本中上颌切牙和第一磨牙的平均及个体持续萌出模式。样本包括从比约克（1968年）种植体研究档案中获取的14组女孩的头颅侧位片。所有受试者双侧上颌后牙区有种植体，上颌前牙区有一或两个种植体。颅面异常的受试者被排除。该样本代表了各种类型的错牙合畸形，但正畸治疗期间的记录被排除在平均数据和平均曲线的计算之外。最终样本包括年龄在9至25岁之间的147张X线片。数据通过综合数值和图形程序进行调试。9至25岁期间，上颌切牙平均累计向下持续萌出6mm，向前2.5mm；上颌第一磨牙平均向下持续萌出8mm，向前3mm。这导致9至16岁期间牙合平面倾斜度（OLs/IPLs）平均降低4.5度。需要注意的是，由于天然牙的持续萌出，在儿童期、青少年期和成年早期，不建议使用带有假牙的骨整合种植体，除非对假牙进行后期修复或更换做出特殊安排，以补偿此类种植体缺乏持续萌出的情况。
