title: An in vitro comparative evaluation of fracture resistance of custom made, metal, glass fiber reinforced and carbon reinforced posts in endodontically treated teeth.
abstract: BACKGROUND
  Posts are used to enhance crown buildup in pulpless teeth with destructed crown portion. Different types of post are used in endodontically treated teeth. The aim of the present in vitro study was to evaluate fracture resistance of custom made, metal, glass fiber reinforced and carbon reinforced posts in endodontically treated teeth.
  
  
  METHODS
  An in vitro study was carried out on extracted 40 human maxillary central incisor teeth, which was divided into four groups with 10 samples in each group with custom made, metal post, glass fiber reinforced, and carbon reinforced posts. The samples were decoronated at cemento-enamel junction and endodontically treated. Post space was prepared and selected posts were cemented. The composite cores were prepared at the height of 5 mm and samples mounted on acrylic blocks. Later fracture resistance to the compressive force of samples was measured using Universal Testing Machine.
  
  
  RESULTS
  The maximum resistance to the compressive force was observed in carbon reinforced and glass fiber reinforced posts compared others which is statistically significant (P > 0.001) and least was seen in custom fabricated post.
  
  
  CONCLUSIONS
  It is concluded that carbon reinforced fiber post and glass fiber posts showed good fracture resistance compared to custom made and metal posts.
authors.affiliation: Senior Lecturer, Department of Prosthodontics, Government College of Dentistry, Indore, Madhya Pradesh, India.
authors.forename: Subhash
authors.initials: S
authors.lastname: Sonkesriya
authors.affiliation: Reader, Department of Oral & Maxillofacial Pathology & Microbiology, New Horizon Dental College & Research Institute, Bilaspur, Chhattisgarh, India.
authors.forename: Santosh T
authors.initials: ST
authors.lastname: Olekar
authors.affiliation: Reader, Department of Conservative Dentistry and Endodontics, Sri Venkateswara Dental College, Puducherry, India.
authors.forename: V
authors.initials: V
authors.lastname: Saravanan
authors.affiliation: Faculty Member, Department of Prosthodontics, Mahsa University, Kualalumpur, Malaysia.
authors.forename: P
authors.initials: P
authors.lastname: Somasunderam
authors.affiliation: Senior Lecturer, Department of Pedodontics, Sinhgad Dental College & Hospital, Pune, Maharashtra, India.
authors.forename: Rashmi Singh
authors.initials: RS
authors.lastname: Chauhan
authors.affiliation: Postgraduate Student, Department of Conservative Dentistry & Endodontics, KLE'S Dental College, Belgaum, Karnataka, India.
authors.forename: Vishwajit Rampratap
authors.initials: VR
authors.lastname: Chaurasia
keywords: Carbon reinforced post; custom post; fracture; fracture resistance; glass fiber post