İki farklı endodontik cetvelin (endoblok) cetvel ve kalibrasyon deliklerinin ölçüm doğruluklarının incelenmesi

The depth of the file-length-calibration holes located on the upper side of the endoblock (between 12.0-27.5) was measured using the same caliper but by means of transferring the depth to a #40 file with silicone stopper. Statistical control limits and specification limits were compared to examine the measurement quality of each endoblock brand. The specification limits were calculated in 3 standard deviation (sigma) widths taking the reference values into account indicated on the product. Control limits were calculated utilizing the measurements obtained during product testing.