A New Interactive 3-D Numerical Model of the Human Mandible for Peri-Implant Analysis in-Vivo Compared With Cone Beam Computed Tomography 3-D Quality

Abstract

Dental implants have been widely and increasingly used in the past few decades to support and retain partial and complete dental prosthesis. The fear of failure due to mechanical overloading increased the need for stress-strain analysis along bone-implant interface of the ever growing designs of dental implants. Finite element analysis (FEA) was used by many authors to evaluate stresses around dental implants and to predict their survivability, where to extract a robust FEA model a realistic information system must be used. In this study an interactive 3-D model was retrieved from Computed Tomography (CT) images utilizing, a proposed software are used to obtain high image quality of the jaw bones scanned by 3-D CT compared with Cone Beam Computed tomography (CBCT) output. Identification of different anatomical regions set for mandible cortical and spongy bones with soft tissues by generated 3-D models and validated with real measurements from solid model.

Early Loading of Short and Standard-Length Dental Implants Retaining Mandibular Kennedy Class I Removable Partial Dentures

“…Immediate loading of short implants was reported in several studies of Alvira-González et al 38 , Weerapong K et al 42 , and Hadilou et al 45 However, this study adopted a more careful approach, the early loading, based on previous studies on the mandibular numerical models, 37 and bone density in the posterior mandible, 43,49,57 where the achieved primary stability of the short dental implants, together of one months of healing, the vertical placement of the implant, and the resilient attachment, enabled the short implants used in this study to demonstrate vertical bone loss values and surrounding bone density profile similar to the standard conventional long implants.…”

“…[19][20][21] Another controversial factor was the type of attachment of the implants to the IARPDS, where the ball abutments were found to transmit the least amount of stress to the implants and abutment teeth compared to locator and magnet attachments, when placed parallel to the most distal abutment, however, with reduced stability due to its greater freedom of movement, yet with more benefits and preservation of supporting teeth and implants when combined with mesially placed abutments. [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37] Immediate loading of short implants placed in distal extension edentulous spaces was considered an option in the treatment protocols, once primary stability could be achieved in selected cases, [38][39][40][41] also, no significant differences between the conventional loading and immediate loading of short implants were found, [42][43][44][45] with either locator or ball abutment attachments in follow-up periods extending from 2 to 12 years, [46][47][48][49] with preference of prognosis for implants placed in atrophic mandibles compared to atrophic maxillae. [50][51][52][53][54][55][56] Based on the previously presented data, this study aimed at clinical evaluation of early loaded short dental implants, compared to early loaded conventional long dental implants, supporting mandibular K...…”

K8. A novel sensor and a proposed setup for remote measurement of mandibular implant stress

“…The data is sent to a remote measuring setup for treatment and analysis, or for repetitive measurement in time during the computed tomography (CT) and cone beam computed tomography (CBCT) procedures as described by Nassef et al [8], [9]. The sensed intramouth data is transmitted remotely to external setup.…”

“…We would like to thank Dr. Rania Mostafa [9], Faculty of Dentistry, Alexandria University, for her support and providing the clinical data we used in this paper.…”