Nascimento A, Sallum A W
J Periodontal Res. 1975 Feb;10(1):44-8. doi: 10.1111/j.1600-0765.1975.tb00006.x.
The present investigation studies the changes that occur in periodontal supporting tissues of lower canine and premolar of marmosets (Callithrix jacchus), due to experimental modification of occlusal relationships in the region of the molar. For our purposes an extracoronal arch wire of 0.7 mm diameter was fixed into occlusal perforations of the upper third premolar and first molar, on both sides. Eight male marmosets weighing from 250 to 350 grams were used. After each experimental time interval of 7, 14, 21 and 28 days two animals were sacrificed. The results clearly showed areas of tension with stretch periodontal fibers in the distal region of the canine and areas of pressue with osseous and redicular resorption in the mesial region of the first premolar. The tissue changes may be considered to result from transmission of abnormal forces through the proximal contacts of teeth associated with displacements and minor modifications in their occlusal relationships. Similar changes may occur in a tooth distant from the teeth exposed to primary excessive occlusal forces.
本研究探讨了狨猴（Callithrix jacchus）下犬齿和前磨牙牙周支持组织的变化，这些变化是由于磨牙区域咬合关系的实验性改变所致。为了实现我们的研究目的，在两侧的上颌第三前磨牙和第一磨牙的咬合穿孔中固定了直径为0.7毫米的冠外弓丝。使用了八只体重在250至350克之间的雄性狨猴。在7天、14天、21天和28天的每个实验时间间隔后，处死两只动物。结果清楚地显示，在犬齿远中区域有牙周纤维拉伸的张力区域，在第一前磨牙近中区域有骨和牙根吸收的压力区域。组织变化可能被认为是由于异常力量通过牙齿的邻面接触传递，伴随着牙齿移位及其咬合关系的微小改变而产生的。在远离承受原发性过大咬合力牙齿的牙齿上可能会出现类似的变化。
