Theoretical Design of Multilayer Dental Posts Using CAD-Based Approach and Sol-Gel Chemistry

A computer-aided design (CAD)-based approach and sol-gel chemistry were used to design a multilayer dental post with a compositional gradient and a Young’s modulus varying from 12.4 to 2.3 GPa in the coronal-apical direction. Specifically, we propose a theoretical multilayer post design, consisting of titanium dioxide (TiO2) and TiO2/poly(ε-caprolactone) (PCL) hybrid materials containing PCL up to 24% by weight obtained using the sol-gel method. The current study aimed to analyze the effect of the designed multilayer dental post in endodontically treated anterior teeth. Stress distribution was investigated along and between the post and the surrounding structures. In comparison to a metal post, the most uniform distributions with lower stress values and no significant stress concentration were found when using the multilayer post.

[1]  L. Ambrosio,et al.  Natural/synthetic porous scaffold designs and properties for fibro-cartilaginous tissue engineering , 2011 .

[2]  J. Ciurana,et al.  Three-dimensional printed bone scaffolds: The role of nano/micro-hydroxyapatite particles on the adhesion and differentiation of human mesenchymal stem cells , 2017, Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine.

[3]  P. Ausiello,et al.  The effects of cavity-margin-angles and bolus stiffness on the mechanical behavior of indirect resin composite class II restorations. , 2017, Dental materials : official publication of the Academy of Dental Materials.

[4]  Paulo Jorge Da Silva bartolo,et al.  Fabrication and characterisation of PCL and PCL/PLA scaffolds for tissue engineering , 2014 .

[5]  P. Sharrock,et al.  Mechanical properties of glass fiber-reinforced endodontic posts. , 2009, Acta biomaterialia.

[6]  F. Tay,et al.  Clinical evaluation of the use of fiber posts and direct resin restorations for endodontically treated teeth. , 2005, The International journal of prosthodontics.

[7]  M. Catauro,et al.  Modification of Ti6Al4V implant surfaces by biocompatible TiO2/PCL hybrid layers prepared via sol-gel dip coating: Structural characterization, mechanical and corrosion behavior. , 2017, Materials science & engineering. C, Materials for biological applications.

[8]  R. Sakaguchi.  Craig's Restorative Dental Materials - E-Book , 2019 .

[9]  M. Catauro,et al.  Sol-gel synthesis and characterization of SiO2/PCL hybrid materials containing quercetin as new materials for antioxidant implants. , 2016, Materials science & engineering. C, Materials for biological applications.

[10]  A. Kishen.  Mechanisms and risk factors for fracture predilection in endodontically treated teeth , 2006 .

[11]  R. Martelli.  Fourth-generation intraradicular posts for the aesthetic restoration of anterior teeth. , 2000, Practical periodontics and aesthetic dentistry : PPAD.

[12]  A Asundi,et al.  Photomechanical investigations on post endodontically rehabilitated teeth. , 2002, Journal of biomedical optics.

[13]  I Zein,et al.  Mechanical properties and cell cultural response of polycaprolactone scaffolds designed and fabricated via fused deposition modeling. , 2001, Journal of biomedical materials research.

[14]  P. Ausiello,et al.  Mechanical behavior of endodontically restored canine teeth: Effects of ferrule, post material and shape. , 2017, Dental materials : official publication of the Academy of Dental Materials.

[15]  M. Catauro,et al.  Structure and magnetic properties of SiO2/PCL novel sol–gel organic–inorganic hybrid materials , 2013 .

[16]  M. de Mattos,et al.  Endodontically treated teeth: characteristics and considerations to restore them. , 2011, Journal of prosthodontic research.

[17]  M. Catauro,et al.  TiO2/PCL hybrid materials synthesized via sol-gel technique for biomedical applications. , 2015, Materials science & engineering. C, Materials for biological applications.

[18]  Xiuzhi Susan Sun,et al.  Properties of soy protein isolate/polycaprolactone blends compatibilized by methylene diphenyl diisocyanate ☆ , 2001 .

[19]  J. Astbäck,et al.  A retrospective study of 236 patients with teeth restored by carbon fiber-reinforced epoxy resin posts. , 1998, The Journal of prosthetic dentistry.

[20]  A. Apicella,et al.  Investigation on the static and dynamic structural behaviors of a regional aircraft main landing gear by a new numerical methodology , 2017 .

[21]  Sang‐Wan Shin,et al.  Biomechanical Evaluation of a Tooth Restored with High Performance Polymer PEKK Post-Core System: A 3D Finite Element Analysis , 2017, BioMed research international.

[22]  H. Wilke,et al.  In vitro and in silico investigations of disc nucleus replacement , 2012, Journal of The Royal Society Interface.

[23]  L. Nicolais,et al.  Effects of polymer amount and processing conditions on the in vitro behaviour of hybrid titanium dioxide/polycaprolactone composites. , 2007, Biomaterials.

[24]  F. Tay,et al.  Clinical performance of fiber post restorations in endodontically treated teeth: 2-year results. , 2007, The International journal of prosthodontics.

[25]  Daniela Guarnieri,et al.  Surface investigation on biomimetic materials to control cell adhesion: the case of RGD conjugation on PCL. , 2010, Langmuir : the ACS journal of surfaces and colloids.

[26]  K Genovese,et al.  Finite element analysis of a new customized composite post system for endodontically treated teeth. , 2005, Journal of biomechanics.

[27]  F. A. Peyton,et al.  Elastic and Mechanical Properties of Human Dentin , 1958, Journal of dental research.

[28]  N. H. Abu Kasim,et al.  3D-FE analysis of functionally graded structured dental posts. , 2011, Dental materials journal.

[29]  Sang‐Wan Shin,et al.  Corrigendum to “Biomechanical Evaluation of a Tooth Restored with High Performance Polymer PEKK Post-Core System: A 3D Finite Element Analysis” , 2017, BioMed Research International.

[30]  M. Catauro,et al.  Synthesis of Bioactive Chlorogenic Acid-Silica Hybrid Materials via the Sol–Gel Route and Evaluation of Their Biocompatibility , 2017, Materials.

[31]  M. Catauro,et al.  Novel sol-gel organic-inorganic hybrid materials for drug delivery. , 2010, Journal of applied biomaterials & biomechanics : JABB.

[32]  M. Catauro,et al.  Synthesis, thermal behavior and physicochemical characterization of ZrO2/PEG inorganic/organic hybrid materials via sol–gel technique , 2017, Journal of Thermal Analysis and Calorimetry.

[33]  A. Saidi,et al.  Influence of inhomogeneous dental posts on stress distribution in tooth root and interfaces: Three‐dimensional finite element analysis , 2017, The Journal of prosthetic dentistry.

[34]  L. Ambrosio,et al.  Multidisciplinary Perspectives for Alzheimer's and Parkinson's Diseases: Hydrogels for Protein Delivery and Cell-Based Drug Delivery as Therapeutic Strategies , 2009, The International journal of artificial organs.

[35]  Francesco Caputo,et al.  FE Simulation of a SHM System for a Large Radio-Telescope , 2018 .

[36]  M. Catauro,et al.  Response of SAOS-2 cells to simulated microgravity and effect of biocompatible sol–gel hybrid coatings , 2016 .

[37]  Massimo Martorelli,et al.  Mechanical and Thermal Properties of Dental Composites Cured with CAD/CAM Assisted Solid-State Laser , 2018, Materials.

[38]  L. Ambrosio,et al.  Release kinetics of ampicillin, characterization and bioactivity of TiO2/PCL hybrid materials synthesized by sol-gel processing. , 2006, Journal of biomedical materials research. Part A.

[39]  Eujin Pei,et al.  Design and Analysis of 3D Customized Models of a Human Mandible , 2016 .

[40]  M. Catauro,et al.  Further Theoretical Insight into the Mechanical Properties of Polycaprolactone Loaded with Organic–Inorganic Hybrid Fillers , 2018, Materials.

[41]  O. Peters,et al.  Restoration of endodontically treated teeth without posts. , 2003, American journal of dentistry.

[42]  M. Catauro,et al.  Sol–gel processing of drug delivery zirconia/polycaprolactone hybrid materials , 2008, Journal of materials science. Materials in medicine.

[43]  Fibreglass-reinforced composite endodontic posts , 2022 .

[44]  R. Scotti,et al.  Clinical evaluation of teeth restored with quartz fiber-reinforced epoxy resin posts. , 2003, The International journal of prosthodontics.

[45]  S. Grandini,et al.  Use of anatomic post and core for reconstructing an endodontically treated tooth: a case report. , 2003, The journal of adhesive dentistry.