EFFECT OF ETCHING TIME AND ACID CONCENTRATION ON ...
2016-4-9 · Preparation the tooth surface. With a turbine round bur (ISO 806 314 001 534 012 for primary teeth and ISO 806 314 001 534 014 for permanent teeth) and water-air cooling a cut in medio-distal direction along the vestibular surface is made. The purpose was pre-marking the depth of removal of enamel and dentine. With a turbine fissure diamond bur (ISO
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