Diagnostic Accuracy of CBCT for Detection of Second Canal of Permanent Teeth: A Systematic Review and Meta-Analysis

Table 2

Pooled estimates of sensitivity and specificity of CBCT for detection of second canal anatomy of permanent teeth.

Root canal anatomy	Pooled estimates of all second canal (MB2, maxillary and mandibular premolars, mandibular molars, and mandibular canines)
Pooled prevalence (%)	46
Sensitivity (CI)	94% (80.7%–98.3%)
Specificity (CI)	93.1% (84.4%–97.2%) 1000 (second canal = 460)
Hypothetical cohort of 1000 roots of permanent teeth with 46% prevalence of second canal

MB2: second mesiobuccal canal of permanent maxillary first and second molars; %: percentage; CI: confidence interval.