A COMPARATIVE STUDY BETWEEN MOISTURE INSENSTiVE AND SELF ETCHING PRIMERS ON DRY AND SALIVA CONTAMINATED ENAMEL SURFACES (IN VITRO STUDY)

Abstract

Revolutionary advances in adhesive dentistry, changed the bonding basis, concept and protocols. Moisture control, bond failures, prolonged visits, and technique sensitivity were all problems encountered with the current bonding techniques. The aim of this in-vitro study was to assess the efficacy of two of the newly introduced orthodontic primers; Moisture-insensitive primer and Transbond Plus Self-etching primer. The two primers were compared under dry and salivary contaminated conditions, to the Transbond XT conventional primer under dry conditions as a control. The study consisted of two parts: • The shear bond strength test: to compare shear bond strength of metallic brackets bonded using: Transbond XT conventional primer (control), Moisture-insensitive primer, and Transbond Self¬etching primer, under dry and salivary contaminated conditions. • Scanning electron microscope study: a- To evaluate the resin enamel interface with the use of each primer, under dry and salivary contamination.