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The schematics of the registration and integrated measurement method of the thickness of buccal bone and gingiva. The CBCT (containing bone information) and model scan (containing gingival information) data were first collected(A-B). The researcher imported the two multimodal data into the in the coDiagnostiX software and selected three anatomic feature points from the anterior and posterior teeth (C). The software would automatically register the CBCT and model scan based on the selected surfaces (D). The sagittal planes of the incisors included the bone and gingival information in the same coordinate system(E). The measurement of buccal bone and gingiva was performed at preset identical levels (F). The measurement levels of buccal bone wall thickness were divided into the coronal buccal bone (2/4/6mm apical to CEJ, abbreviates as CEJ2B, CEJ4B and CEJ6B) and apical buccal bone (0/4/6mm coronal to apex, abbreviates as ApicalB, Apical2B and Apical4B), the measurement levels of buccal gingival thickness were divided into the supra-CEJ gingival thickness bone (1 mm apical to CEJ and CEJ level, abbreviates as CEJ+1G and CEJG) and sub-CEJ gingival thickness (1/2/4/6mm apical to CEJ, abbreviates as CEJ1G, CEJ2G, CEJ4G and CEJ6G).