CAJ | 학술논문

背景：虽然蒸汽灭菌法是口腔临床常用的一种消毒方法，但其是否会对消毒器械产生更明显的影响学术界一直存在着争议。 　　目的：对比分析高压蒸汽灭菌后两种常用正畸用末端切断钳剪切力值及腐蚀程度的变化，以明确高压蒸汽灭菌法对两种品牌末端切断钳的影响。 　　方法：取天天、3M牌末端切断钳各15把，均随机分为3组，分别进行高压蒸汽灭菌，高压蒸汽灭菌联合口外剪切，高压蒸汽灭菌联合口内剪切。测量经0，20，40，60次消毒后末端切断钳的剪切力，拍摄金相片并对两种切断钳钳喙进行X射线能谱分析。 　　结果与结论：随着消毒次数增加，6组切断钳的剪切力值均随之增大，天天末端切断钳3组剪切力的增大程度明显大于对应的3M末端切断钳3组(P<0.05)。随着消毒次数的增加，两种末端切断钳钳喙均出现了不同程度的腐蚀及磨损，但天天末端切断钳腐蚀范围较大，甚至出现了钳喙缺损。天天末端切断钳中碳元素含量明显高于3M天天末端切断钳(P <0.05)，铬元素含量低于3M天天末端切断钳(P <0.05)；铝、钛元素仅在3M天天末端切断钳中存在。表明高压蒸汽灭菌法对末端切断钳剪切效果及腐蚀均有不良影响，两种品牌相比，3M末端切断钳所受影响较小。
배경：수연증기멸균법시구강림상상용적일충소독방법，단기시부회대소독기계산생경명현적영향학술계일직존재착쟁의。 　　목적：대비분석고압증기멸균후량충상용정기용말단절단겸전절력치급부식정도적변화，이명학고압증기멸균법대량충품패말단절단겸적영향。 　　방법：취천천、3M패말단절단겸각15파，균수궤분위3조，분별진행고압증기멸균，고압증기멸균연합구외전절，고압증기멸균연합구내전절。측량경0，20，40，60차소독후말단절단겸적전절력，박섭금상편병대량충절단겸겸훼진행X사선능보분석。 　　결과여결론：수착소독차수증가，6조절단겸적전절력치균수지증대，천천말단절단겸3조전절력적증대정도명현대우대응적3M말단절단겸3조(P<0.05)。수착소독차수적증가，량충말단절단겸겸훼균출현료불동정도적부식급마손，단천천말단절단겸부식범위교대，심지출현료겸훼결손。천천말단절단겸중탄원소함량명현고우3M천천말단절단겸(P <0.05)，락원소함량저우3M천천말단절단겸(P <0.05)；려、태원소부재3M천천말단절단겸중존재。표명고압증기멸균법대말단절단겸전절효과급부식균유불량영향，량충품패상비，3M말단절단겸소수영향교소。
BACKGROUND:Steam sterilization is a commonly used oral clinical method of disinfection, but whether it would produce more significant impact on equipments waiting for sterilization has been controversial. OBJECTIVE:To investigate the effect of autoclave on two kinds of orthodontic distal end cutters by comparing shearing force and corrosion after sterilization. METHODS:Tiantian (n=15) and 3M (n=15) distal end cutters commonly used in orthodontic treatment were chosen for testing and divided into three groups, respectively. Three groups for each kind of cutter were treated with high-pressure steam sterilization, steam sterilization+extraoral shear, and steam sterilization+intraoral shear, respectively. The shearing force and metal ography of the distal end cutters were recorded after 0, 20, 40, and 60 cycles of sterilization. An energy dispersive spectrometer was used to scan the surfaces of the working edges of the distal end cutters after 60 cycles. RESULTS AND CONCLUSION:It was found that with an increase in the number of sterilization cycles, the shear force and extent of corrosion increased in al six groups of distal end cutters, but the situation was worse for Tiantian cutters than for 3M cutters. It was found that the difference of shear force between the Tiantian autoclave group and 3M autoclave group was statistical y significant (P<0.05) after 20, 40, and 60 sterilization cycles. Meanwhile, the metal ography showed that different degrees of discoloration and rust spots appeared on the work edges of the two brands of distal end cutters with an increase in the number of sterilization cycles, but the corrosion of the Tiantian distal-end cutter was more widespread, and even work-edge defects appeared. The carbon content of the Tiantian distal-end cutter was higher than that of the 3M cutter (P<0.05), but the chromium content was higher in the 3M cutter (P<0.05). In addition, aluminum and titanium elements only existed in the 3M cutter. The use of the autoclave affected the distal end cutters in terms of shearing force and corrosion, but the effect on 3M distal end cutters was obviously less than that on Tiantian cutters.