正确判断牙髓活力对制订合理的治疗计划有着十分重要的意义,moorVMS激光多普勒血流仪可对牙髓血流情况进行直接检测,可大大提高临床诊断的准确性。使用激光多普勒血流仪测量正常牙及不同牙病患牙的牙髓血流量,可以准确评估牙髓活力,为提前治疗提供准确的依据。
所需仪器
·moorVMS激光多普勒监测系统
检测方法
·制作橡胶夹板:用硅橡胶印模材料取上前牙的印模。修整印模外表面,然后在印模上相当于被测牙牙冠唇面中线上,距龈缘2~3 mm处钻孔,直径稍大于4rnm以容纳探头。
·检测牙髓血流量:在安静的实验室进行。测量时受试者端坐于简易牙科椅上,术者将牙面擦干,戴上事先预制的橡胶夹板,将激光血流探头插入橡胶夹板上的小孔与牙面接触。测量结果显示在计算机显示器上。
·对于龋坏牙患者,治疗前测量血流量。然后去净腐质,用Dycal间接盖髓,氧化锌一丁香油糊剂皙封。分别在治疗后3d 及1、2、4、8周复诊测量血流量。最后1次测量结果若无,则进行永久性充填。
·信号带宽:由于牙齿血流较低,因此请在检测前将信号处理带宽调整为 20Hz-3kHz,以得到最高的信噪比,从而取得最准确的测量结果。
所需设备
moorVMS-LDF
Reference
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