Criteria+Requirements+For+A+Successful+RCT

> || * Radiograph does not include the entire apex
 * ~  ||~ Criteria Met ||~ Acceptable ||~ Criteria Not Met ||
 * ~ Access Preparation || * ||  ||   ||
 * ~ Working Length || * Radiograph shows at least 2mm of periapical bone beyond the radiographic apices of involved roots
 * Film of sufficient quality to be easily read
 * WL files should be .5mm short of radiographic apex
 * Files are of sufficient size (needs to be >#15) to be read predictably || * Radiograph shows less 2mm of periapical bone beyond the radiographic apices of involved roots, but includes the entire apex.
 * Film is read with some difficulty due to incorrect exposure or processing
 * WL files are 1-1.5mm short of radiographic apex
 * Files are of insufficient size (< #15) to be read predictably
 * Film cannot be read due to incorrect exposure or processing
 * WL files are are radiographically shown to be over extended or short by >1.5mm of radiographic apex ||
 * ~ Instrumentation || * MAF size appropriate based on pre-op radiograph
 * Canal walls smooth, clean and tapered
 * MAF can easily go to length and turn by hand
 * MAF can be removed with minimal resistance
 * Pressure on MAF demonstrates an apical seat
 * Comparison of MAF and WL radiograph show canal length and curvature has been preserved. || * MAF size is slightly to large or small based on pre-op radiograph
 * Canal walls clean but exhibit slight irregularities in canal walls or taper when tested with MAF
 * MAF goes to length
 * Significant force is needed to turn by hand or remove
 * Pressure on MAF demonstrates an apical seat
 * Comparison of MAF and WL radiograph show canal length and curvature have been minimally transported from original. Up to and including 1 mm || * MAF size is grossly to large or small based on pre-op radiograph and first binding files
 * Grossly irregular canal walls or taper(or even lack a taper) when tested with MAF
 * Canal has been ledged short of the original WL
 * Deviates from the original canal curvature > 1mm
 * Pressure on MAF demonstrates no apical seat (MAF can be pushed beyond WL)
 * __Apical or strip perforation is a critical error__ ||
 * ~ Obturation ||  ||   ||   ||