title: Comparative failure load values of acrylic resin denture teeth bonded to three different heat cure denture base resins: An in vitro study.
abstract: OBJECTIVE
  Acrylic teeth are used for fabrication of dentures. Debonding of tooth - denture base bond is routine problem in dental practice. The aim of this study was to comparatively evaluate failure load of acrylic resin denture teeth bonded to three different heat resin.
  
  
  METHODS
  Four groups were created out of test samples central incisors (11). Group I: Control, whereas Group II, Group III and Group IV were experimental groups modified with diatoric hole, cingulum ledge lock and Teeth modified with both diatoric hole and cingulum ledge lock, respectively. These test specimens with 3 teeth (2 central [11, 21] and 1, lateral [12] incisors) positioned imitating arrangement of teeth in the conventional denture, prepared by three different heat cure materials (DPI, Trevalon, Acralyn-H). A shear load was applied at cingulum of central incisor (11) at 130° to its long axis using universal tester at a cross head speed of 5 mm/min until failure occurred. Failure load test was conducted and statistical analysis was performed using SPSS 16 software package (IBM Company, New York, U.S).
  
  
  RESULTS
  Highest failure load was seen in Group IV specimens, prepared by Trevalon but did not significantly differ from that of DPI.
  
  
  CONCLUSIONS
  The failure load of bonding denture teeth to three different heat cure materials was notably affected by modifications of ridge lap before processing. The specimens with a combination of diatoric hole and cingulum ledge lock, prepared by Trevalon showed highest failure load but did not significantly vary from that of DPI. The control group prepared by Acralyn-H showed lowest failure load but did not significantly differ from that of DPI.
authors.affiliation: Department of Prosthodontics, Faculty of Dental Science, SGT University, Gurgaon, Haryana, India.
authors.forename: Sumit Singh
authors.initials: SS
authors.lastname: Phukela
authors.affiliation: Private Practitioner, Zonal Dental Clinic, Clove Dental, New Delhi, India.
authors.forename: Amit
authors.initials: A
authors.lastname: Dua
authors.affiliation: Department of Oral Pathology, Indraprastha Dental College and Hospital, Ghaziabad, Uttar Pradesh, India.
authors.forename: Mahima
authors.initials: M
authors.lastname: Dua
authors.affiliation: Private Practitioner, Zonal Dental Clinic, Clove Dental, New Delhi, India.
authors.forename: Varun
authors.initials: V
authors.lastname: Sehgal
authors.affiliation: Department of Conservative, Faculty of Dental Science, SGT University, Gurgaon, Haryana, India.
authors.forename: Gaurav
authors.initials: G
authors.lastname: Setya
authors.affiliation: Department of Prosthodontics, Himachal Institute of Dental Science, Himachal Pradesh, India.
authors.forename: Rupinder Singh
authors.initials: RS
authors.lastname: Dhall
keywords: Cingulum ledge lock; denture base resin; diatoric hole; failure load