title: An evaluation of various materials and tooth preparation designs used for reattachment of fractured incisors.
abstract: OBJECTIVE
  The present study was undertaken to evaluate and compare the fracture strength of various restorative materials and designs used in the reattachment of anterior fractured teeth.
  
  
  METHODS
  Sound human maxillary central incisors were selected for the study. These teeth were fractured using universal testing machine so as to obtain Ellis class II fracture with intact fragment. The fractured fragment was reattached to the tooth using three restorative materials namely, bonding agent, resin luting cement and nano-composite, and designs incorporated were simply bonding the fragment to the tooth and other one included a chamfer along the fractured line. The reattached teeth were again fractured and the mean fracture strength values recorded.
  
  
  CONCLUSIONS
  A combination of nano-composite (best material) and chamfer preparation (best design) gave the highest mean fracture strength values.
authors.affiliation: Department of Pedodontics and Preventive Dentistry, D.A.V (C) Dental College and Hospital, Yamunanagar, India. mb30in@yahoo.co.in
authors.forename: Megha
authors.initials: M
authors.lastname: Bhargava
authors.forename: Inder Kumar
authors.initials: IK
authors.lastname: Pandit
authors.forename: Nikhil
authors.initials: N
authors.lastname: Srivastava
authors.forename: Neeraj
authors.initials: N
authors.lastname: Gugnani
authors.forename: Monika
authors.initials: M
authors.lastname: Gupta
mesh_terms: D003188:Composite Resins / Q000627:therapeutic use; D001840:Dental Bonding; D003793:Dental Restoration, Permanent / Q000379:methods*; D003799:Dental Stress Analysis; D006801:Humans; D007180:Incisor / Q000293:injuries*; D008422:Materials Testing; D053761:Nanocomposites / Q000627:therapeutic use; D019279:Resin Cements / Q000627:therapeutic use; D014082:Tooth Fractures / Q000628:therapy*; D019246:Tooth Preparation / Q000379:methods*
chemical_list: D003188:Composite Resins; D019279:Resin Cements