Influence of tube voltage on radiographic diagnosis of caries in premolars and molars

Abstract

The influence of tube voltage on radiographic diagnosis of caries in extracted premolars and molars was examined. Five combinations of dental X-ray machines and kV-settings were used (Philips Oralix 65 kV; Siemens Heliodent EC 60 kV; Siemens Heliodent 70 kV; Soredex Minray DC 60 kV and 70 kV). The diagnostic accuracy was evaluated with the ROC-technique. The results showed no significant differences in the diagnostic accuracy between premolars and molars. However, the diagnostic accuracy tended to be better with low kilovoltage for radiography of premolars and high kilovoltage for radiography of molars.