Influence of various materials on biomechanical behavior of endocrown-restored, endodontically-treated mandibular first molar: A 3D-finite element analysis

Abstract

To evaluate the effect of restorative materials on stress distribution of endodontically treated teeth, the 3D models of an endodontically treated mandibular first molar, restoration, and cement layer were created. Three different materials (composite resin, ceramage and ceramic) were studied and two loading conditions (vertical and oblique load) were simulated. Mohr-Coulomb failure criterion of enamel, dentine, endocrown and cement were evaluated separately. It is indicated that under both loading conditions, the highest values of Mohr-Coulomb failure criterion were observed in Ceramage-restored group for remaining tooth structure while in ceramic-restored group for the restoration. Compared to composite resin and Ceramage, ceramic endocrown transferred less stress, namely was more protective to the tooth structure.

Keywords

endocrown / endodontically-treated teeth / restorative material / finite element analysis

References

[1] Ferracane J L. Resin Composite—State of the Art[J]. Dent. Mater., 2011, 27(1): 29-38.

[2] Sarrett D C. Clinical Challenges and the Relevance of Materials Testing for Posterior Composite Restorations[J]. Dent. Mater., 2005, 21(1): 9-20.

[3] Conrad H J, Seong W J, Pesun I J. Current Ceramic Materials and Systems with Clinical Recommendations: a Systematic Review[J]. J. Prosthet. Dent., 2007, 98(5): 389-404.

[4] Prafulla Thumati K R R. Ceramage-a Ceramo Polymer Restoration to be Used as an Alternative to Ceramics; as an Indirect Restorative Material in a Minimally Invasive Cosmetc Dentistry Protocol-a Case Report[J]. J. Inter. Dent. Med. Res., 2013, 6(1): 31-35.

[5] Biacchi G R, Mello B, Basting R T. The Endocrown: an Alternative Approach for Restoring Extensively Dmaged Molars[J]. J. Esthet. Restor. Dent., 2013, 25(6): 383-390.

[6] Bindl A, Richter B, Mormann W H. Survival of Ceramic Computer-Aided Design/Manufacturing Crowns Bonded to Preparations with Reduced Macroretention Geometry[J]. Int. J. Prosthodont, 2005, 18(3): 219-224.

[7] Lander E, Dietschi D. Endocrowns: a Clinical Report[J]. Quintessence Int., 2008, 39(2): 99-106.

[8] Rocca G T, Krejci I. Crown and Post-free Adhesive Restorations for Endodontically Treated Posterior Teeth: From Direct Composite to Endocrowns[J]. Eur. J. Esthet. Dent., 2013, 8(2): 156-179.

[9] Aversa R, Apicella D, Perillo L, et al. Non-linear Elastic Threedimensional Finite Element Analysis on the Effect of Endocrown Material Rigidity on Alveolar Bone Remodeling Process[J]. Dent. Mater., 2009, 25(5): 678-690.

[10] Zarone F, Sorrentino R, Apicella D, et al. Evaluation of the Biomechanical Behavior of Maxillary Central Incisors Restored by Means of Endocrowns Compared to a Natural Tooth: a 3D Static Linear Finite Elements Analysis[J]. Dent. Mater., 2006, 22(11): 1 035-1 044.

[11] Yo M-h. Advances in Strength Theories for Materials under Complex Stress State in the 20th Century[J]. App. Mech. Rev., 2002, 55(3): 169-199.

[12] Bhatti M A. Fundamental Finite Element Analysis and Applications: with Mathematica and Matlab Computations[M], 2005 New Jersey: John Wiley & Sons.

[13] Benazzi S, Kullmer O, Grosse I R, et al. Using Occlusal Wear Information and Finite Element Analysis to Investigate Stress Distributions in Human Molars[J]. J. Anat., 2011, 219: 259-272.

[14] Yamanel K, Caglar A, Gulsahi K, et al. Effects of Different Ceramic and Composite Materials on Stress Distribution in Inlay and Onlay Cavities: 3-D Finite Element Analysis[J]. Dent. Mater. J., 2009, 28(6): 661-670.

[15] Anusavice K J, Shen C, Rawls H R, et al. Phillip’s Science of Dental Materials. 12th edition, 2013 St. Louis: Elsevier Saunders.

[16] Dejak B, Mlotkowski A. Three-dimensional Finite Element Analysis of Strength and Adhesion of Composite Resin versus Ceramic Inlays in Molars[J]. J. Prosthet. Dent., 2008, 99: 131-140.

[17] Silva A G, Martins C C, Zina L G, et al. The Association Between Occlusal Factors and Noncarious Cervical Lesions: a Systematic Review[J]. J. Dent., 2013, 41(1): 9-16.

[18] Pierrisnard L, Bohin F, Renault P, et al. Corono-radicular Reconstruction of Pulpless Teeth: a Mechanical Study Using Finite Element Analysis[J]. J. Prosthet. Dent., 2002, 88(4): 442-448.

[19] Willems G, Lambrechts P, Braem M, et al. A Classification of Dental Composites According to their Morphological and Mechanical Characteristics[J]. Dent. Mater., 1992, 8(5): 310-319.

[20] Huang Z, Chen Zhi. Three-dimensional Finite Element Modeling of a Maxillary Premolar Tooth Based on the Micro-CT Scanning: A Detailed Description[J]. J. Huazhong Univ. Sci. Technol. [Med. Sci.], 2013, 33(5): 775-779.

[21] Hasan I, Frentzen M, Utz KH, et al. Finite Element Analysis of Adhesive Endo-crowns of Molars at Different Height Levels of Buccally Applied Load[J]. J. Dent. Biomech., 2012, 3(17): 58-63.

[22] Hazzouri K M, Mohajer A, Dejak S I, et al. Contrasting Patterns of Transposable-Element Insertion Polymorphism and Nucleotide Diversity in Autotetraploid and Allotetraploid Arabidopsis Species[J]. Genetics, 2008, 179(1): 581-592.

[23] Jiang W, Bo H, Yongchun G, et al. Stress Distribution in Molars Restored with Inlays or Onlays with or without Endodontic Treatment: a Three-dimensional Finite Element Analysis[J]. J. Prosthet. Dent., 2010, 103(1): 6-12.

[24] Kou W, Li D, Qiao J, et al. A 3D Numerical Simulation of Stress Distribution and Fracture Process in a Zirconia-based FPD Framework[J]. J. Biomed. Mater. Res. B Appl. Biomater., 2011, 96(2): 376-385.

[25] Ausiello P, Rengo S, Davidson C L, et al. Stress Distributions in Adhesively Cemented Ceramic and Resin-Composite Class II Inlay Restorations: a 3D-FEA Study[J]. Dent. Mater., 2004, 20(9): 862-872.

[26] Varlan C, Dimitriu B, Varlan V, et al. Current Opinions Concerning the Restoration of Endodontically Treated Teeth: Basic Principles[J]. J Med. Life, 2009, 2(2): 165-172.