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牙齿硬组织病理性磨耗,以及牙齿缺失伴有咬合降低时,矫形治疗都需合升高咬合;有些病例能改善美容和功能效果,但有时病人对矫治器和义齿不能很快适应。作者用24只狗进行实验,研究后牙咬合升高对下颌神经组织结构的影响。在狗的(?)牙齿上固定金属冠升高咬合,使前牙形成开(牙合)5～6mm,造成固定金属冠的牙和对(牙合)牙功能性负荷过重;经过1、3、7、14、20、30和60天以后杀死动物,在(?)水平切取通过下颌管的下颌神经约长12～15mm,进行组织形态学检查。同时用3只狗作对照组。
Tooth hard tissue pathological wear and tear, accompanied by a loss of teeth with occlusal reduction, the orthopedic need to be combined with increased occlusion; some cases can improve the cosmetic and functional effects, but sometimes the patient can not adapt to orthodontics and dentures. The authors used 24 dogs to study the effect of raising posterior teeth occlusion on the structure of mandibular nerve. In the dog's teeth fixed metal crown lifted bite, so that the formation of anterior teeth (occlusion) 5 ~ 6mm, resulting in a fixed metal crown teeth and on (occlusion) teeth functional overload; after 1, Animals were sacrificed at days 3, 7, 14, 20, 30 and 60, and the mandibular nerve cut through the mandibular canal at the level of (?) Was about 12-15 mm long for histomorphologic examination. At the same time with 3 dogs for the control group.