Use of a bite-opening appliance in the miniature pig: modification of craniofacial growth.
Use of a bite-opening appliance in the miniature pig: modification of craniofacial growth.
复制标题
在小型猪中使用咬合装置：改变颅面生长。
DOI：
10.1159/000147770
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
Herring,SW
中科院分区：
文献类型：
--
作者：
Ferrari,CS;Herring,SW
本研究的目的是确定猪对咬块的生长反应，为研究生长改变的功能相关性做好准备。三只小型猪 (Sus scrofa) 佩戴咬合装置，形成 18-20 毫米的前开口，持续 42-67 天。三只未经处理的猪作为对照。所有动物都接受了钽植入物和四环素注射，以追踪面部骨骼和缝合线的生长。治疗导致上颌和下颌后牙相对压低，前牙超萌和后倾。正如之前对猴子的研究所预期的那样，实验动物的前上颌骨和上颌骨的垂直位移在向上方向上发生了显着改变。还发现髁突形态发生变化，颌关节盘被重塑。然而，与灵长类动物的研究结果相反，前上颌骨、上颌骨和颧骨的前部生长大大减少。猴子和猪之间的这种反应差异可能是由于咬合块改变了颧上颌缝线上的负载所致。
The purpose of this study was to determine the growth response of pigs to a bite block, preparatory to investigating the functional correlates of altered growth. Three miniature pigs (Sus scrofa) wore bite-opening appliances, creating an anterior opening of 18-20 mm, for 42-67 days. Three untreated pigs served as controls. All animals received tantalum implants and tetracycline injections to track growth of the facial bones and sutures. Treatment caused relative intrusion of maxillary and mandibular posterior teeth, and supereruption and retroclination of anterior teeth. Vertical displacement of the premaxilla and maxilla of the experimental animals was altered significantly in the superior direction, as expected from previous studies on monkeys. Changes in condylar morphology were also found, and the jaw joint discs were remodeled. Contrary to primate findings, however, anterior growth of the premaxillary, maxillary and zygomatic bones was greatly reduced. This difference in response between monkeys and pigs may be due to the way the bite block altered the load on the zygomatico-maxillary suture.