<prompt> False about enameloplasty is:It uses rotary finishing instrumentLeaves a smooth surfaceThe surface left by enameloplasty should meet the tooth preparation wall with a cavosurface angle no greater than approximately 100 degreesEnameloplasty is accomplished as part of final preparation stage  <response>: Enameloplasty refers to eliminating the developmental fault by removing it with the side of an appropriately shaped rotary finishing instrument, leaving a smooth surface. The surface left by enameloplasty should meet the tooth preparation wall, preferably with a cavosurface angle no greater than approximately 100 degrees; this would produce a distinct margin for amalgam of no less than 80 degrees.Enameloplasty is accomplished as part of the initial preparation stage but does not involve extension of the preparation outline form.Reference: Sturdevant operative dentistry. 7th ed, Page No:125, 327 