title: Effect of marginal sealant on shear bond strength of glass ionomer cement: used as a luting agent.
abstract: BACKGROUND
  Moisture sensitivity and dissolution has been a known drawback of glass ionomer cement (GIC). When used as a luting agent for cementation of casted indirect restoration, the exposed cement at the margins is often a primary factor for marginal leakage and consequent failure of the restoration. The following in vitro study was planned to evaluate the effect of a marginal sealant on GIC used as luting agent.
  
  
  METHODS
  Sixty healthy extracted premolars were selected and prepared to receive metal-ceramic prosthesis. The prepared restorations were cemented using GIC and were divided randomly into two groups. The specimens in Group A were directly immersed in artificial saliva solution without any protection at the margins, while the exposed cement for Group B specimens was protected using a marginal sealant before immersing it in the artificial saliva solution. The specimens were tested after 24 h using a crown pull test on the universal testing machine to measure the shear bond strength of the cement.
  
  
  RESULTS
  The specimens in Group B showed statistically significant difference from the specimens in Group A with the mean shear bond strength of 6.60 Mpa and 5.32 respectively.
  
  
  CONCLUSIONS
  Protection of GIC exposed at the margins of indirect cast restorations with a marginal sealant can significantly increase the longevity of the prosthesis by reducing the marginal leakage and perlocation of fluids. How to cite the article: Nazirkar G, Singh S, Badgujar M, Gaikwad B, Bhanushali S, Nalawade S. Effect of marginal sealant on shear bond strength of glass ionomer cement: Used as a luting agent. J Int Oral Health 2014;6(3):65-9.
authors.affiliation: Department of Prosthodontics, SMBT Dental College & Hospital and Post Graduate Research Centre, Amrutnagar, Sangamner, Maharashtra, India.
authors.forename: Girish
authors.initials: G
authors.lastname: Nazirkar
authors.affiliation: Department of Prosthodontics, SMBT Dental College & Hospital and Post Graduate Research Centre, Amrutnagar, Sangamner, Maharashtra, India.
authors.forename: Shailendra
authors.initials: S
authors.lastname: Singh
authors.affiliation: Department of Prosthodontics, SMBT Dental College & Hospital and Post Graduate Research Centre, Amrutnagar, Sangamner, Maharashtra, India.
authors.forename: Mayura
authors.initials: M
authors.lastname: Badgujar
authors.affiliation: Department of Prosthodontics, Sinhgad Dental College and Hospital, Wadgaon (BK), Pune, Maharashtra, India.
authors.forename: Bhushan
authors.initials: B
authors.lastname: Gaikwad
authors.affiliation: Department of Prosthodontics, SMBT Dental College & Hospital and Post Graduate Research Centre, Amrutnagar, Sangamner, Maharashtra, India.
authors.forename: Shilpa
authors.initials: S
authors.lastname: Bhanushali
authors.affiliation: Department of Prosthodontics, SMBT Dental College & Hospital and Post Graduate Research Centre, Amrutnagar, Sangamner, Maharashtra, India.
authors.forename: Sumit
authors.initials: S
authors.lastname: Nalawade
keywords: GIC; marginal leakage; marginal sealant
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