超声沿骨质传导的速度,取决于骨密度。骨密度越高,传导速度越快。下颌牙列完整侧(健侧),超声传导速度为3230±60 m/s,而牙列缺损侧(患侧),牙槽突机械负荷减少,骨密度降低,传导速度为2780±60 m/s,比健侧降低16％。 有73.3％的人多用右侧咀嚼食物,导致右侧下颌骨密度较高,超声传导速度比左侧平均高630 m/s。缺牙处植入种植体,在种植体上制作固定义齿1年后,右侧骨密度仍高于左侧(传导速度右侧为3030±60 m/s,左侧为2560±70 m/s)。术后2～4年。骨密度有些降低 The speed of ultrasound along the bone is dependent on the bone density. The higher the bone density, the faster the conduction velocity. The mandibular dentition intact side (contralateral), the ultrasonic conduction velocity of 3230 ± 60 m / s, while the dentition defect side (ipsilateral), the mechanical reduction of alveolar process, bone mineral density decreased, the conduction velocity of 2780 ± 60 m / s, 16% lower than the contralateral side. 73.3% of people use the right chewing food, resulting in a higher density of the right mandibular and an ultrasonic conduction velocity of 630 m / s higher than the average left. Implants were implanted in the absence of teeth. One year after the implant was made, the right-sided bone mineral density was still higher than the left (conduction velocity 3030 ± 60 m / s on the right and 2560 ± 70 m / s on the left ). 2 to 4 years after surgery. Some decrease in bone density