title: ART restorations and sealants placed in Chinese school children--results after three years.
abstract: OBJECTIVE
  These were to assess whether ART restorations and sealants could be provided to children in a school environment in China, to assess patient acceptability of the ART approach, and to evaluate on a longitudinal basis the treatments performed.
  
  
  METHODS
  This study was conducted in Deyang, Sichuan Province, in western China. A total of 294 ART restorations were placed in 197 children and 191 fissure sealants were placed in 140 children by five middle-level dentists in four secondary schools. Standard instruments and procedures for ART were used. The restorative material used was a high-strength glass-ionomer (Ketac-Molar, ESPE). The treatments were evaluated annually after placement by the same examiner who had not been involved in the placement of the restorations nor sealants using explorers and mouth-mirrors. At the 3-year examination an independent external examiner evaluated the restorations using USPHS criteria.
  
  
  RESULTS
  Most of the children did not report discomfort during treatment and 92% were willing to receive ART restorations again. The cumulative 1-year and 3-year survival rates of small Class I restorations were 99% and 92% respectively. The corresponding figures for large Class I restorations were 90% and 77%. After 3 years, 72% of the sealants were either partially or completely retained. Only 2% of the sealed teeth developed fissure caries and these involved teeth where the sealants had been lost. Similar success rates were found using USPHS criteria.
  
  
  CONCLUSIONS
  The ART approach for preventing and treating tooth decay in Chinese school children was shown to be appropriate, effective and acceptable. The 3-year survival rates of the restorations were high but were related to the size and type of the restoration.
authors.affiliation: Faculty of Dentistry, University of Hong Kong, Hong Kong. holmgren@club-internet.fr
authors.forename: C J
authors.initials: CJ
authors.lastname: Holmgren
authors.forename: E C
authors.initials: EC
authors.lastname: Lo
authors.forename: D
authors.initials: D
authors.lastname: Hu
authors.forename: H
authors.initials: H
authors.lastname: Wan
mesh_terms: D000293:Adolescent; D016009:Chi-Square Distribution; D002648:Child; D002681:China; D003731:Dental Caries / Q000517:prevention & control*; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods* / Q000706:statistics & numerical data; D005240:Feasibility Studies; D005899:Glass Ionomer Cements; D006801:Humans; D015993:Life Tables; D008137:Longitudinal Studies; D010342:Patient Acceptance of Health Care; D010895:Pit and Fissure Sealants; D018709:Statistics, Nonparametric
chemical_list: D005899:Glass Ionomer Cements; D010895:Pit and Fissure Sealants; C110712:ketac-molar