title: A comparative evaluation of microleakage and compressive strength of Ketac Molar, Giomer, Zirconomer, and Ceram-x: An in vitro study.
abstract: BACKGROUND
  Microleakage around dental restorative material and strength to withstand the masticatory forces is major problem in dentistry. Instead, many new materials available, very few actually bond to tooth surface and bear masticatory load.
  
  
  OBJECTIVE
  The aim of this study is to evaluate and compare the microleakage and compressive strength of Ketac Molar, Giomer, Zirconomer, and Ceram-x.
  
  
  METHODS
  For the evaluation of microleakage, Class V cavities were prepared on sixty human premolar teeth and divided into four study groups (n = 15): Group I (Ketac Molar), Group II (Giomer), Group III (Zirconomer), and Group IV (Ceram-x). The samples were thermocycled and subjected to dye penetration test. The sections were made and evaluated under stereomicroscope at × 40 magnification. For the compressive strength evaluation, sixty cylindrical specimens were fabricated measuring 5 mm × 6 mm and grouped into four study groups (n = 15): Group I (Ketac Molar), Group II (Giomer), Group III (Zirconomer), and Group IV (Ceram-x). All were then subjected to the Universal Testing Machine at crosshead speed of 1 mm/s.
  
  
  METHODS
  The data were analyzed using paired t-test and ANOVA.
  
  
  RESULTS
  The microleakage was found insignificant (P > 0.05) for all study groups, with Giomer showing maximum followed by Zirconomer, Ceram-x, and Ketac Molar. The compressive strength was found to be highly significant (P < 0.01) with the maximum score for Giomer followed by Ceram-x, Zirconomer, and Ketac Molar.
  
  
  CONCLUSIONS
  The sealing ability was maximum in Ketac Molar, Zirconomer, Ceram-x, and Giomer whereas the compressive strength was maximum for Giomer followed by Ceram-x, Zirconomer, and Ketac Molar.
authors.affiliation: Department of Paediatric and Preventive Dentistry, Surendera Dental College and Research Institute, Sri Ganganagar, Rajasthan, India.
authors.forename: Rashmeet
authors.initials: R
authors.lastname: Walia
authors.affiliation: Department of Paediatric and Preventive Dentistry, Surendera Dental College and Research Institute, Sri Ganganagar, Rajasthan, India.
authors.forename: Purshottam
authors.initials: P
authors.lastname: Jasuja
authors.affiliation: Department of Paediatric and Preventive Dentistry, Surendera Dental College and Research Institute, Sri Ganganagar, Rajasthan, India.
authors.forename: Kanika Gupta
authors.initials: KG
authors.lastname: Verma
authors.affiliation: Department of Paediatric and Preventive Dentistry, Surendera Dental College and Research Institute, Sri Ganganagar, Rajasthan, India.
authors.forename: Suruchi
authors.initials: S
authors.lastname: Juneja
authors.affiliation: Department of Paediatric and Preventive Dentistry, Surendera Dental College and Research Institute, Sri Ganganagar, Rajasthan, India.
authors.forename: Aditi
authors.initials: A
authors.lastname: Mathur
authors.affiliation: Department of Paediatric and Preventive Dentistry, Surendera Dental College and Research Institute, Sri Ganganagar, Rajasthan, India.
authors.forename: Lovejeet
authors.initials: L
authors.lastname: Ahuja
mesh_terms: D003188:Composite Resins; D019245:Compressive Strength; D003763:Dental Leakage / Q000209:etiology*; D003764:Dental Materials / Q000009:adverse effects*; D003793:Dental Restoration, Permanent / Q000379:methods; D003799:Dental Stress Analysis; D005899:Glass Ionomer Cements / Q000009:adverse effects*; D066298:In Vitro Techniques
chemical_list: C520091:CeramX; D003188:Composite Resins; D003764:Dental Materials; D005899:Glass Ionomer Cements; C110712:ketac-molar