Zakhary, M. (2025). Effect of Contracted Access Cavity Preparation on Transportation in Curved Root Canals in Molars. An In-Vitro Study. Journal of Fundamental and Clinical Research, 5(1), 94-106. doi: 10.21608/jfcr.2025.317677.1092
Marina Hesham Fawzy Zakhary. "Effect of Contracted Access Cavity Preparation on Transportation in Curved Root Canals in Molars. An In-Vitro Study". Journal of Fundamental and Clinical Research, 5, 1, 2025, 94-106. doi: 10.21608/jfcr.2025.317677.1092
Zakhary, M. (2025). 'Effect of Contracted Access Cavity Preparation on Transportation in Curved Root Canals in Molars. An In-Vitro Study', Journal of Fundamental and Clinical Research, 5(1), pp. 94-106. doi: 10.21608/jfcr.2025.317677.1092
Zakhary, M. Effect of Contracted Access Cavity Preparation on Transportation in Curved Root Canals in Molars. An In-Vitro Study. Journal of Fundamental and Clinical Research, 2025; 5(1): 94-106. doi: 10.21608/jfcr.2025.317677.1092
Effect of Contracted Access Cavity Preparation on Transportation in Curved Root Canals in Molars. An In-Vitro Study
Department of Endodontics, Faculty of Oral and Dental Medicine
Abstract
Background: Conservation of the tooth structure is one of the main pillars for tooth longevity. Achieving both; conservation and proper visualization and instrumentation is challenging in Endodontics. Aim of the study: Study the effect of contracted access cavity preparation on transportation in curved roots in mandibular molars. Materials and methods: Mandibular human molar teeth were collected. Cone Beam Computed Topography (CBCT) was taken preoperatively and postoperatively and was superimposed. Teeth were divided into four groups. Group A (10˚-21˚) subdivided into A1 undergoes traditional access cavity (TAC), and A2 undergoes contracted access cavity (CAC). While group B (≥21˚) is sub-divided into B1 which undergoes (TAC), and B2 undergoes (CAC). Then dentin thickness was measured at 5mm from the apex on superimposed radiographs. Gambill’s equations were used to obtain results for transportation. Results: Contracted access cavity (0.09±0.01) had a significantly higher value than traditional access cavity (0.05±0.01) (p < 0.001). Conclusion: Contracted access cavity increases the occurrence of transportation in curved roots.
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