ArticleBMC medical informatics and decision making2026
Comprehensive Root Canal Curvature Assessment Method (CRCAM): a novel seven-parameter system for predicting endodontic difficulty.
Article in BMC medical informatics and decision making, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundRoot canal curvature is a critical factor determining endodontic treatment difficulty and success. Existing methods (Schneider, Pruett) assess only single parameters, lacking comprehensive evaluation.
objectiveTo develop and validate CRCAM (Comprehensive Root Canal Curvature Assessment Method), a novel seven-parameter system providing standardized difficulty scoring.
methodsCRCAM integrates seven parameters: Schneider angle, Pruett radius, curvature location, canal length, number of curves, severity index, and Path Complexity Score. We validated CRCAM on 1,727 periapical radiographs using automated image analysis. Performance was compared with classical methods and recent computational approaches (2022–2025).
resultsCRCAM scores ranged from 23.95 to 96.26 (mean: 73.28 ± 12.26), with five-level difficulty classification: Moderate (2.7%), Difficult (38.0%), Very Difficult (54.0%), and Extremely Difficult (5.4%). Strong correlations were observed between CRCAM and individual parameters (complexity: r = 0.758, angle: r = 0.487, p < 0.001). Compared to Schneider (r = 0.487) and Pruett (r = 0.244) methods alone, CRCAM provided more granular assessment with standardized 0-100 scoring. CLINICAL SIGNIFICANCE: CRCAM represents the first comprehensive, multi-parameter system for root canal curvature assessment, offering standardized difficulty prediction for clinical decision-making.
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