title: Restoration of teeth with more-viscous glass ionomer cements following radiation-induced caries.
abstract: OBJECTIVE
  To assess the suitability of more-viscous conventional restorative glass ionomer cements (GICs) in a high-caries risk group of patients.
  
  
  METHODS
  Fifteen adult patients with radiation-induced caries were treated at a dental hospital by one dentist. Two encapsulated aesthetic GICs were used in each patient to restore 146 carious lesions in the exposed dentine and cementum of 93 teeth. The restorations were assessed directly over two years for their retention, secondary caries, anatomic form, marginal integrity, marginal discolouration, and surface texture.
  
  
  RESULTS
  Both GICs were placed in similar sized cavities (P = 0.63). After two years, although 30.0% of Ketac-Molar Aplicap and 12.5% of Fuji IX GP restorations had been lost (P = 0.01), there were no instances of secondary caries. The remaining GICs showed ongoing marginal deterioration, but there were very few instances where this required the repair or replacement of the restorations. No restorations failed from surface erosion.
  
  
  CONCLUSIONS
  In these high-caries risk patients the placement of more-viscous GICs appeared to prevent secondary caries, even when the restorations were subsequently lost.
authors.forename: J Y
authors.initials: JY
authors.lastname: Hu
authors.forename: Y Q
authors.initials: YQ
authors.lastname: Li
authors.forename: R J
authors.initials: RJ
authors.lastname: Smales
authors.forename: K H K
authors.initials: KH
authors.lastname: Yip
mesh_terms: D000328:Adult; D000368:Aged; D016371:Cranial Irradiation / Q000009:adverse effects*; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods*; D005260:Female; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006258:Head and Neck Neoplasms / Q000532:radiotherapy; D006801:Humans; D008297:Male; D008875:Middle Aged; D017213:Root Caries / Q000209:etiology* / Q000628:therapy*; D014783:Viscosity
chemical_list: C439808:Fuji IX GP Fast; D005899:Glass Ionomer Cements; C424245:Ketac-Molar Aplicap