title: Comparative evaluation of microleakage of three restorative glass ionomer cements: An in vitro study.
abstract: OBJECTIVE
  The aim of this study was to compare the microleakage of glass ionomers (conventional and resin modified) with that of recently introduced nanoionomers.
  
  
  METHODS
  Standardized class I and class V cavities were prepared on 120 young permanent teeth. Samples were equally divided into group I (class I restorations) and group II (class V restorations), and further divided into subgroups. The subgroups were restored with Fuji IX, Fuji II LC, and newly introduced Ketac(™) N 100 (KN 100). Samples were thermocycled and submerged in Acridine dye for 24 h. Samples were sectioned to view under fluorescent microscope and marginal leakage was evaluated by Chi-square and Kruskal - Wallis test.
  
  
  RESULTS
  Fuji IX showed the maximum leakage, followed by LC II and the least was observed in KN 100. In class I restorations, there was significant difference while comparing Fuji IX with Fuji LC II and KN 100 and nonsignificant difference between LC II and KN100. In class V restorations, Fuji IX and KN100, KN 100 and LC II showed significant difference. Fuji IX and LC II showed nonsignificant difference.
  
  
  CONCLUSIONS
  Within the limitations of this study, Fuji IX showed the maximum microleakage. KN 100 showed minimum leakage, better sealing ability, and was more consistent.
authors.affiliation: Department of Pedodontics and Preventive Dentistry, Faculty of Dental Science, Nadiad, Gujarat, India.
authors.forename: Amish
authors.initials: A
authors.lastname: Diwanji
authors.affiliation: Department of Pediatric Dentistry, University of Maryland School of Dentistry, Washington DC, USA.
authors.forename: Vineet
authors.initials: V
authors.lastname: Dhar
authors.affiliation: Department of Pedodontics and Preventive Dentistry, Darshan Dental College, Udaipur, India.
authors.forename: Ruchi
authors.initials: R
authors.lastname: Arora
authors.affiliation: Department of Oral and Maxillofacial Pathology, Pacific Dental College, Udaipur, India.
authors.forename: A
authors.initials: A
authors.lastname: Madhusudan
authors.affiliation: Department of Pedodontics and Preventive Dentistry, Govt. Dental College, Jaipur, Rajasthan, India.
authors.forename: Ambika Singh
authors.initials: AS
authors.lastname: Rathore
keywords: Fluorescent microscope; microleakage; nanoionomer
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