Spectrophotometric analysis of microleakage in the fine curved canals found in the mesial roots of mandibular molars.
Mesial roots from forty human mandibular first and second molar teeth were randomly assigned to two groups and obturated with laterally condensed gutta-percha or silver cones. Each group was divided into two subgroups. The first subgroup for each group consisted of specimens that had two canals with a common foramen. The second subgroup consisted of specimens with two canals and separate foramina. All specimens were obturated and exposed to 2 percent methylene blue dye at 37 degrees C. for a period of 30 days. A dye-recovery, spectrophotometric method was used to evaluate the apical microleakage. Results indicated no statistically significant difference in leakage between the groups or subgroups.
D003763:Dental Leakage / Q000473:pathology*; D003786:Dental Pulp Cavity / Q000033:anatomy & histology; D006171:Gutta-Percha / Q000008:administration & dosage; D006801:Humans; D008963:Molar; D011670:Pulpectomy / Q000379:methods; D012387:Root Canal Filling Materials / Q000008:administration & dosage; D012389:Root Canal Obturation; D012834:Silver / Q000008:administration & dosage; D013053:Spectrophotometry
D012387:Root Canal Filling Materials; D012834:Silver; D006171:Gutta-Percha