ＹＫＺ—３型牙科综合治疗机是北京手术器械厂８０年代生产的，是较早期被各大中型医院应用于口腔疾病治疗的医疗设备之一。该机型使用前期运行可靠，性能稳定，效率高，故障少。由于工作时间长，使用频繁，到了后期，该机故障不断出现，而以高速涡轮机（以下简称手机）不喷雾 The YKZ-3 type dental comprehensive treatment machine was produced by the Beijing Surgical Instrument Factory in the 1980s and is one of the medical devices that were used in the treatment of oral diseases by various large and medium-sized hospitals earlier. The model has reliable operation in the early stage of use, stable performance, high efficiency, and less failures. Due to the long working hours and frequent use, in the late period, the aircraft faults appear constantly, and high-speed turbines (hereinafter referred to as mobile phones) do not spray.