A review of orthodontic cements and adhesives

Orthodontic Adhersives: Review

“…The setting time can be increased by adding monomer to polyalkenoic acid [7,13] . The advantages of this cement is it has improved physical properties , fluoride release, adhesion to the metal and tooth surfaces, micromechanical interlocking , ability to penetrate surface irregularities and fracture resistance [12] .…”

“…Polycarboxylate cement is a reaction between zinc oxide and polycarboxylic acid solution. Polycarboxylic acid forms a chemical bond with enamel and dentin by chelating the calcium present in the enamel and dentin [12] . It is biocompatible cement as the neutralization reaction is less imposed on oral tissues.…”

“…The setting time is controlled by in cooperation of small increments of alkaline component [11] . Its major advantage is dimensional stability, low solubility to oral fluids, better physical propertieshigh compression strength [12] . Its disadvantaeges are it cannot bond with the enamel or metals and cannot be used for braket cementation.…”

“…Mixing zinc phosphate is a technique sensitive and should be kept cool while mixing [11] . Zinc phosphate cement is the reaction between Zinc oxide and phosphoric acid [12] . The setting time is controlled by in cooperation of small increments of alkaline component [11] .…”

“…Its disadvantaeges are it cannot bond with the enamel or metals and cannot be used for braket cementation. the latter is the low tensile strength results in microleckage and demineralisation [11,12] .…”