Today's lesson will be on access preparation with emphasis on mandibular teeth. In this video, the focus will be on concepts, tools and the various challenges of creating straightline access within the various tooth groups. First, we'll start with central incisors, move to bicuspids, and end with molars / posterior teeth. Importantly, in this segment, you'll see how to remove a crown, eliminate stones and find mid-mesials. Further, how to identify second systems in the distal root will be demonstrated.