The thickness of maxillary alveolar facial bone has a significant impact on the outcome of dental treatment. It has been reported that at least 2 mm of facial bone is necessary to prevent soft tissue recession, fenestration, and dehiscence. This research, comprised of two separate studies, uses Cone Beam Computed Tomography (CBCT) to measure horizontal width of the buccal plate in maxillary anterior teeth including first premolars. In the first study, a total of 43 subjects with existing CBCT scans were enrolled. The thickness of the buccal plate was evaluated in five regions along the long axis of each tooth and the average bone thickness was calculated. In the second study, a total of 15 subjects were enrolled to measure and analyze the thickness of the buccal plate before and after implant placement. These measurements will help develop understanding of the mechanism of bone remodeling after tooth extraction and implant placement.