title: 24% Indigenously Prepared Ethylene Diamine Tetra Acetic Acid Compared to Self-Etching Adhesives and their Effect on Shear Bond Strength of Composites in Primary Teeth: An In-vitro Study.
abstract: BACKGROUND
  Over the years, it has been known that 34% phosphoric acid is the benchmark in etchants with the best shear bond strength shown with composites in primary teeth. However, with latest technological advancements and innovations, in order to reduce the number of steps and less damage to the tooth structure, non-rinse conditioner (NRC) & Single-Etch and various other etchants have been tried and tested. These etchants have been found to have shear bond strength comparable to phosphoric acid. In this study, indigenously prepared 24% ethylenediaminetetraacetic acid (EDTA) has been compared with established etchants, as to prove if their shear bond strength was closely related. As it is a well-known fact that EDTA could be less damaging to the enamel during etching and hence can be an alternative for etching of primary teeth.
  
  
  METHODS
  For the study 60 caries-free primary molars were used, they were sectioned in the middle, after making area for bonding; the marked area was then etched using different etchants for 30 s. Each of the teeth was then rinsed and bonded with composite resin and thermocycling was done. Shear bond strength testing was done on the composite using Universal Testing Machine.
  
  
  RESULTS
  Results of the study showed that phosphoric acid showed the highest bond strength, closely followed by Single Etch (Adper Prompt) and NRC, then by EDTA.
  
  
  CONCLUSIONS
  About 24% EDTA can be another comparable replacement for phosphoric acid if used with a Single Etch Primer, like Prime and Bond NT on primary teeth. 34% phosphoric acid has the highest bond strength values with composite resin. Single etch followed by NRC has the second and third highest bond strength values, which are comparable to phosphoric acid.
authors.affiliation: Reader, Department of Pedodontics & Preventive Dentistry, Krishnadevaraya College of Dental Sciences, Bangalore, Karnataka, India.
authors.forename: Priya
authors.initials: P
authors.lastname: Nagar
authors.affiliation: Senior Lecturer, Department of Conservative and Endodontics, Yogita Dental College & Hospital, Khed, Ratnagir, Maharashtra, India.
authors.forename: Yogesh L
authors.initials: YL
authors.lastname: Tandil
authors.affiliation: Reader, Department of Pedodontics and Preventive Dentistry, Coorg Institute of Dental Sciences, Virajpet, Karnataka.
authors.forename: Chandru
authors.initials: C
authors.lastname: T P
authors.affiliation: Senior Lecturer, Department of Community and Preventive dentistry, Teerthankar Mahaveer Dental College and Research Centre, Moradabad, Uttar Pradesh, India.
authors.forename: Anamika
authors.initials: A
authors.lastname: Gupta
authors.affiliation: Reader, Department of Conservative and Endodontics, College of Dental Science & Hospital, Indore, Madya Pradesh.
authors.forename: Devendra
authors.initials: D
authors.lastname: Kalaria
authors.affiliation: Senior Lecturer, Department of Orthodontics, School of Dental Sciences, Greater Noida, Uttar Pradesh.
authors.forename: Prafful
authors.initials: P
authors.lastname: Kumar
keywords: Bond strength; composites; etchants; indigenously prepared 24% ethylene diamine tetra acetic acid; primary teeth