title: Stress distribution of posts on the endodontically treated teeth with and without bone height augmentation: A three-dimensional finite element analysis.
abstract: OBJECTIVE
  Adequate bone support is an essential factor to avoid undue stress to the tooth. This is important when the tooth is endodontically treated and requires a post. The purpose of the present finite element (FE) analysis study was to evaluate the stress distribution of post on endodontically treated tooth with reduced alveolar bone height support and after bone augmentation. The null hypothesis was that there is no difference between the stress distribution of post on endodontically treated teeth with reduced alveolar bone height support and after alveolar bone height augmented using bone graft substitute.
  
  
  METHODS
  The three-dimensional model was fabricated using ANSYS Workbench version 13.0 software to represent an endodontically treated mandibular second premolar restored with a full ceramic crown restoration and was analyzed using FE analysis. A load of 300N at an angle of 60° to the vertical was applied to the triangular ridge of the buccal cusp in a buccolingual plane. The stresses on the tooth with normal alveolar bone height, reduced alveolar bone height, and after bone augmentation because of reduced bone height were calculated using von misses stresses.
  
  
  RESULTS
  A maximum stress value of 136.04 MPa was observed in dentin with an alveolar bone height of 4 mm from the cemento-enamel junction (CEJ). However, after 2 mm of alveolar bone augmentation, the stress value was 104.32 MPa, which was comparable to the stress value of 105.56 observed with the normal bone height of 2 mm from the CEJ.
  
  
  CONCLUSIONS
  Similar values of stresses were observed in teeth with normal and augmented bone height. Increased stresses were observed with alveolar bone loss of 4 mm from the CEJ.
authors.affiliation: Department of Conservative Dentistry and Endodontics, DAV (c) Dental College and Hospital, Yamuna Nagar, Haryana, India.
authors.forename: Sougaijam Vijay
authors.initials: SV
authors.lastname: Singh
authors.affiliation: Department of Conservative Dentistry and Endodontics, DAV (c) Dental College and Hospital, Yamuna Nagar, Haryana, India.
authors.forename: Saurabh
authors.initials: S
authors.lastname: Gupta
authors.affiliation: Department of Conservative Dentistry and Endodontics, Jaipur Dental College and Hospital, Jaipur, Rajasthan, India.
authors.forename: Deepak
authors.initials: D
authors.lastname: Sharma
authors.affiliation: Department of Periodontology and Implantology, DAV (c) Dental College and Hospital, Yamuna Nagar, Haryana, India.
authors.forename: Nymphea
authors.initials: N
authors.lastname: Pandit
authors.affiliation: Department of Oral Medicine and Radiology, DAV (c) Dental College and Hospital, Yamuna Nagar, Haryana, India.
authors.forename: Aruna
authors.initials: A
authors.lastname: Nangom
authors.affiliation: Department of Conservative Dentistry and Endodontics, DAV (c) Dental College and Hospital, Yamuna Nagar, Haryana, India.
authors.forename: Harsha
authors.initials: H
authors.lastname: Satija
keywords: Bone augmentation; Panavia; bone height; carbon fiber