title: Comparison of the fracture resistance of reattached incisor tooth fragments using 4 different materials.
abstract: OBJECTIVE
  To evaluate and compare the fracture resistance of reattached teeth using four different materials.
  
  
  METHODS
  150 extracted human permanent maxillary incisors were randomly divided into five groups of 30 teeth each of one control and four experimental groups. Teeth in experimental groups were sectioned 2.5 mm from incisal edge and reattached using four different materials. The reattached teeth were subjected to evaluate fracture resistance.
  
  
  RESULTS
  The mean fracture resistance of reattached teeth using resin modified glass ionomer cement, compomer, composite resin and dual curing resin cement was 8.10 ± 2.34, 11.15 ± 3.36, 17.11 ± 3.99 and 14.13 ± 3.71 kg respectively. Results showed highly significant difference between the groups ( P < 0.001).
  
  
  CONCLUSIONS
  Fracture resistance of reattached teeth in the different groups varied from 24-51% of that for an intact tooth. Reattachment with composite resin provides highest fracture resistance ( P < 0.05). Reattachment with resin-modified glass ionomer cement was the weakest ( P < 0.05).
authors.affiliation: Department of Pedodontics and Preventive Dentistry, PGIDS, Rohtak, Haryana, India. singhal84.ruchi@gmail.com
authors.forename: R
authors.initials: R
authors.lastname: Singhal
authors.forename: A
authors.initials: A
authors.lastname: Pathak
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D020770:Compomers / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry; D003738:Dental Cements / Q000737:chemistry*; D003793:Dental Restoration, Permanent / Q000379:methods*; D005899:Glass Ionomer Cements / Q000737:chemistry; D006801:Humans; D007180:Incisor / Q000293:injuries* / Q000503:physiopathology; D010756:Phosphoric Acids / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D012117:Resins, Synthetic / Q000737:chemistry; D055116:Self-Curing of Dental Resins; D013696:Temperature; D013997:Time Factors; D019228:Tooth Crown / Q000293:injuries / Q000503:physiopathology; D014082:Tooth Fractures / Q000503:physiopathology* / Q000628:therapy
chemical_list: C433205:Calibra; D020770:Compomers; D003188:Composite Resins; D003738:Dental Cements; C088486:Dyract; C466112:Esthet-X; C079765:Fuji II LC cement; D005899:Glass Ionomer Cements; D010756:Phosphoric Acids; D011109:Polymethacrylic Acids; C425843:Prime and Bond NT; D019279:Resin Cements; D012117:Resins, Synthetic; C030242:phosphoric acid