Virtual analysis of stresses in human teeth restored with esthetic posts

Amarante, Martha Vasconcellos; Pereira, M. V.; Darwish, Fathi Aref; Camarão, Arnaldo Freitas

doi:10.1590/s1516-14392008000400014

Cited by 20 publications

(15 citation statements)

References 23 publications

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“…In this study, a force of 100 N was applied on the palatal surface at the cingulum at an angle of 45 0 . These loads represent the average masticatory force recorded, and were in accordance with studies by Ho, et al [3] Joshi, et al [6], Okamoto, et al [7], Amarante, et al [8], Jang, et al [9] and Cohen, et al [10]. The structural integrity and clinical longevity of post-and-core restored teeth are therefore strongly dependent on the state of stress created in their different regions due to occlusal loads.…”

Section: Discussionsupporting

confidence: 84%

Stress evaluation of maxillary central incisor restored with different post materials: A finite element analysis

Agarwal¹,

Mittal²,

Singhal³

et al. 2020

J Clin Adv Dent

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Introduction: With the availability of diff erent post systems and various studies on the strength of teeth restored with posts, the controversy as to which post systems provide better stress distribution of post and longevity of tooth has not been resolved. The purpose of this study was to compare the stress distribution of three diff erent post materials using fi nite element analysis.Materials and nethod: Three dimensional fi nite element models of central incisor, three posts with crown were constructed on computer with software. Posts of three diff erent materials (Ni-Cr post, Glass fi ber post, and Zirconia post)with zirconia crown were virtually generated and a force of 100 N was applied at an angle of 450 on the palatal surface of the crown. Von Mises stresses were evaluated on the cervical, middle and apical third of the root. Results:The maximum stresses were seen on the cervical one-third in each post material indicating that this region is more prone to fracture in tooth restored with posts. Among the three materials tested, Ni-Cr post showed maximum stress generation followed by Zirconia post and glass fi ber post. The maximum stresses generated by the posts were 11.4 MPa, 10.58 MPa and 4.11 MPa respectively. Conclusion:The less rigid post material like glass fi ber post can be used in an endodontically treated anterior teeth.

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Section: Discussionsupporting

confidence: 84%

Stress evaluation of maxillary central incisor restored with different post materials: A finite element analysis

Agarwal¹,

Mittal²,

Singhal³

et al. 2020

J Clin Adv Dent

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“…One of the most common challenges faced by the dentist is the restoration of endodontically treated teeth, more so because of its brittleness as compared to vital teeth. [ 1 2 3 ] The success of endodontically treated teeth is related to the position of the tooth in the dental arch,[ 4 5 ] occlusal contact,[ 6 7 ] proximal contact,[ 8 ] structural loss of tooth,[ 9 10 11 12 13 ] and periodontal condition of endodontically treated teeth. [ 14 ] The changes that accompany the root canal therapy and the thickness of the residual walls and cusps will determine the selection of the restorative materials and the procedures for endodontically treated teeth.…”

Section: Introductionmentioning

confidence: 99%

Stress distribution of endodontically treated teeth with titanium alloy post and carbon fiber post with different alveolar bone height: A three-dimensional finite element analysis

et al. 2015

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Objective:A three-dimensional (3D) finite element analysis (FEA) on the stress distribution of endodontically treated teeth with titanium alloy post and carbon fiber post with different alveolar bone height.Materials and Methods:The 3D model was fabricated using software to represent an endodontically treated mandibular second premolar with post and restored with a full ceramic crown restoration, which was then analyzed using FEA using FEA ANSYS Workbench V13.0 (ANSYS Inc., Canonsburg, Pennsylvania, U.S.A) software.Results:The FEA showed the maximum stresses of 137.43 Mpa in dentin with alveolar bone height of 4 mm when the titanium post was used, 138.48 Mpa when carbon fiber post was used as compared to 105.91 Mpa in the model with alveolar bone height of 2 mm from the cement enamel junction (CEJ) when the titanium post was used and 107.37 Mpa when the carbon fiber post was used.Conclusions:Stress was observed more in alveolar bone height level of 4 mm from CEJ than 2 mm from CEJ. Stresses in the dentin were almost similar when the carbon fiber post was compared to titanium post. However, stresses in the post and the cement were much higher when titanium post was used as compared to carbon fiber post.

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“…The geometric complexity and material heterogeneities demand the numerical approximation of the stress and load analysis (Amarante et al, 2008;Chan et al, 2007;Freitas et al, 2010aFreitas et al, , 2010bIchim et al, 2007;Li et al, 2006;Papadopoulos et al, 2010). A two dimensional finite element model was adopted in order to investigate the stress fields generated in the tooth-adhesive-veneer system when subjected to thermal and mechanical loadings that develop during the natural occlusal, mastication or deglutition procedures.…”

Section: Numerical Analysismentioning

confidence: 99%