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Orthodontic treatment with fixed attachments had been performed by soldering brackets onto bands. Full-mouth banding techniques had some disadvantages, including increased chair-time, diastema resulting from the removal of bands at the end of the treatment, unaesthetic appearances and soft tissue irritation. In 1955, Buonocore applied 85% phosphoric acid to enamel and became a pioneer in science by providing a method for bonding acrylic structures by etching on enamel. The effect of various acid pretreatment results in hard dental tissues being characterized by numerous microscopic...

A Light curing unit is a dental equipment that is used for polymerization of light cure dental materials. The light from a curing unit is delivered over a range of wavelengths and varies for different devices. The bonding of orthodontic attachments directly to enamel is now a widely accepted technique. The use of light-cured bonding systems has become popular since photoactivated materials were developed. Such bonding systems have been widely accepted among orthodontists because of their ease of use and the extended time available to obtain proper bracket position before polymerization is...