Influence of the concentration of ions and foramen diameter on the accuracy of electronic root canal length measurement—An experimental study

Influence of Apical Constriction Diameter on Root ZX Apex Locator Precision

“…Moreover, statistical analysis confirmed that although differences in working lengths recorded by using files from #10 -#25 were not statistically significant, those recorded with a #10 file differed significantly from those with #30, #50, or #100 files. Studies that examined the effect of internal and external sodium, potassium, and calcium concentrations and of apical foramen diameter on the accuracy of locator measurements found that errors in electronic measurements increased with foramen enlargement; measurements were significantly more accurate with a 0.25-mm foramen than when the foramen was enlarged to 0.45 and 0.70 mm (22).…”

“…A number of studies reported that as apical foramen diameter increases, EAL accuracy decreases (12,21,22).…”

Farklı preparasyon genişliklerinde iki elektronik apeks bulucu cihazın doğruluğunun değerlendirilmesi

“…Apikal çapın EAB cihazların doğ-ruluğunu etkilediği daha önceden bildirilmiştir. 18,19 Kovacevic & Tamarut 19 apikal çap 0.25 mm olduğunda, apikal çapın 0.45 mm ve 0.75 mm'ye genişletildiği durumlara göre daha doğru ölçümler elde edildiğini bildirmiştir. Ebrahim ve ark.…”

Electronic root canal length measurement before and after experimentally induced pulpitis and apical periodontitis in dogs

“…Numerous factors can influence the accuracy of these devices including the diameter of the apical foramen [7,13,19], the presence of conductive irrigant [8], the presence of blood, pus or exudate [9], the relation of the diameter of the measuring probe to the diameter of the root canal [1], the distance between the measuring probe and the inactive electrode [14], the thickness of the remaining dental wall [11], and the presence of accessory canals or fractured roots [1]. The thickness and type of measuring probe is not clinically significant [21].…”

“…One explanation for this phenomenon is the different conductivity of the pulpal tissue in different pathological states, because the quantity of electrically conductive particles [17,18]. The effect of the concentration of cations on the accuracy of ERCLM was demonstrated in an ex vivo experiment [7].…”