Bone morphological effects on post-implantation remodeling of maxillary anterior buccal bone: A clinical and biomechanical study Nobuhiro Yoda, DDS,

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Bone morphological effects on post-implantation remodeling of maxillary anterior buccal bone: A clinical and biomechanical study Nobuhiro Yoda, DDS, PhD, Keke Zheng, Graduate Student, Junning Chen, PhD, Wei Li, BE, ME, PhD, Michael Swain, BSc, PhD, Keiichi Sasaki, DDS, PhD, Qing Li, BE, ME, ME(Res), PhD Journal of Prosthodontic Research Volume 61, Issue 4, Pages 393-402 (October 2017) DOI: 10.1016/j.jpor.2016.12.010 Copyright © 2017 Japan Prosthodontic Society Terms and Conditions

Fig. 1 2D sectional images of CBCT. (a) Initial consultation (Scan-1), (b) 6 months after implantation (Scan 2), and (c) 6 months after loading (Scan-3); Six measurements were set at 1, 2, 4, 6, 8, 12mm from implant platform (yellow line in (b and c)). Solid line: bone outer surface (green line (b) and purple line (c)). Journal of Prosthodontic Research 2017 61, 393-402DOI: (10.1016/j.jpor.2016.12.010) Copyright © 2017 Japan Prosthodontic Society Terms and Conditions

Fig. 2 Process of FE model construction. (a) Solid models of the implant, abutment and screw; (b) masks created for each individual component in ScanIP: virtual insertion of the implant in Solidworks; (c) final model meshed in ABAQUS; (d) site-specific material properties of osseous tissues assigned based on the Hounsfield Unit values from the CBCT data through a FORTRAN program in ABAQUS user subroutine; (e) region of interests (ROIs) in peri-implant and the path on the buccal bone surface, loading condition: F=38.3N, α=65°; and (f) kinematic boundary conditions. Journal of Prosthodontic Research 2017 61, 393-402DOI: (10.1016/j.jpor.2016.12.010) Copyright © 2017 Japan Prosthodontic Society Terms and Conditions

Fig. 3 Horizontal dimensional changes in the buccal bone. Horizontal bone dimensions (BBT) at 6 months after implant placement (green) and 6 month after loading (i.e. 12 months after implant placement) (pink) in this specific patient, as well as the corresponding reduction rates (black square dot in a curve). Journal of Prosthodontic Research 2017 61, 393-402DOI: (10.1016/j.jpor.2016.12.010) Copyright © 2017 Japan Prosthodontic Society Terms and Conditions

Fig. 4 Correlation between BBT and mechanobiological stimuli on buccal bone surface. (a) Correlation between the initial BBT and the mechanobiological stimulus distributions on the buccal bone surface, (b) correlation between the BBT changes during 6 months of loading and the mechanobiological stimulus distributions on the buccal bone surface. Journal of Prosthodontic Research 2017 61, 393-402DOI: (10.1016/j.jpor.2016.12.010) Copyright © 2017 Japan Prosthodontic Society Terms and Conditions

Fig. 5 The mechanobiological stimuli in buccal bone area with different BBTs. (a) FE models (upper row) and the examples of SED distribution (lower row) after virtual bone grafting. (b) Cross sectional images of buccal bone on implant for investigating the distribution of VMS, EQS, and SED in different BBTs. Journal of Prosthodontic Research 2017 61, 393-402DOI: (10.1016/j.jpor.2016.12.010) Copyright © 2017 Japan Prosthodontic Society Terms and Conditions

Fig. 6 Volume average values of mechanobiological stimuli in peri-implant ROI with different BBTs. Journal of Prosthodontic Research 2017 61, 393-402DOI: (10.1016/j.jpor.2016.12.010) Copyright © 2017 Japan Prosthodontic Society Terms and Conditions