Lester K S, Mitchell P T
Westmead Hospital Dental Clinical School, New South Wales.
Aust Dent J. 1990 Feb;35(1):1-13. doi: 10.1111/j.1834-7819.1990.tb03019.x.
The progressive status of some selected small dental cutting instruments was examined from the time of their unpackaging through routine institutionalized cleaning and sterilizing procedures both before and after first and subsequent use. The cleaning protocol in place at the time involved a phosphoric acid based detergent and ultrasonic cleaning. All assessments were made by scanning electron microscopy. It was found that new burs as unpackaged are unacceptable for use without first being subjected to a cleaning process and that the cleaning procedure utilized was ineffective and unsuitable. Also observed was the potential for gross contamination; the need for subsequent ultrasonic cleaning; and the different rate and nature of deterioration, with use, of the three bur types studied. This study has led to the introduction of modified procedures for the physical cleaning of small cutting instruments in our institution and confirms the usefulness of the scanning electron microscope in the ongoing practice of quality assurance.
从一些选定的小型牙科切割器械拆封之时起，对其在首次使用前、首次使用后以及后续使用后的常规机构清洁和消毒程序中的进展情况进行了检查。当时实施的清洁方案包括使用基于磷酸的洗涤剂和超声清洗。所有评估均通过扫描电子显微镜进行。结果发现，未拆封的新车针在未经清洁处理之前不能直接使用，而且所采用的清洁程序无效且不合适。还观察到存在严重污染的可能性；需要进行后续超声清洗；以及所研究的三种车针类型在使用过程中不同的劣化速率和性质。本研究促使我们机构引入了小型切割器械物理清洁的改进程序，并证实了扫描电子显微镜在持续质量保证实践中的有用性。
