Background/purpose: There is large variation in root canal morphology and undetected canals and incomplete instrumentation are reasons for root canal treatment failure. The purpose of this study was to determine the best radiographic method for determining root canal morphology in mandibular first premolars in Chinese descendants in Taiwan. Materials and methods: Mandibular first prem... https://trendingcustomes.shop/product-category/set-of-8-snowflake-shaped-wooden-ornaments/