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《Hainan Medical Journal》 2009-05
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Accuracy evaluation on Root ZX apex locator in clinical practice

ZHAO Li-feng. Department of Stomatology,the Second People's Hospital of Guilin City,541001,Guangxi,P.R.CHINA  
Objective To evaluate the accuracy of working length determined by Root ZX apex locator alone in clinical practice. Methods 102 patients with 208 canals were recruited. Working length of 208 canals was determined by Root ZX alone. After preparatation canals,radiographs with standardized master cone were taken. Real working length were figured out and estimated Root ZX instrument veracity. Results An accurate rate of vital canals and non-vital canals was 93.18% and 90% respectively. There was no statistically difference in tooth station,age and position. The mean distance of WL-WL was shorter in vital canals than that in non-vital canals. Conclusion Root ZX is useful and reliable to detemine working length of canals,as well as can prevent the need for further diagnostic radiographs.
【CateGory Index】: R781.05
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