| Sumario: | Introduction: Radiographic estimation of working length is crucial for good treatment outcome in endodontic and implant. Objectives: The purpose of this experimental study is to assess the possibility of clinical significant distortion caused by a radiographie images processing software, known as Romexis and its performance in radiographie estimation of working length compared to conventional radiograph. Methods: This study was conducted using 5 sound lower incisors. Actual length of the teeth were first measured and recorded. Conventional radiograph and digital radiograph of the teeth were then taken. The radiographie images of the teeth were measured with digital caliper for conventional radiograph; while with Romexis software for digital radiograph of the teeth. Every measurement was then repeated twice and the mean was obtained. The discrepancies between the radiographie estimated length and actual length of teeth were calculated. Data was analyzed using descriptive statistic and Wilcoxon Signed Rank test. Result: The result shows that Romexis tends to underestimate the working length compared to actual length and conventional radiograph. This underestimation of working length is clinically not significant (less than 0.5 mm) despite statistically significant; as the working length is generally measured to the nearest 0.5 mm in dentistry. Conclusion: Distortion of radiographie images processed by Romexis is clinically not significant, despite statistically significant. Therefore, Romexis software can be used as an alternative for radiographie estimation of working length in clinical setting.
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