The straight wire appliance was developed, treatment demands had increased, and adults were seeking treatment in greater numbers. This increasing demand for adult treatment brought unique concerns to the profession.Esthetics was to be a primary concern of patients. Adult patients present with unique challenge, of wanting to look good even during orthodontic treatment. They have demands of their work and broader social needs to consider. They think that braces are normally meant for kids. In an effort to provide solution to these esthetic problems tooth coloured brackets and wires were also...