ABSTRACT
Full upper and lower impressions are generally taken in alginate. While explaining to an apprehensive patient exactly what you intend doing, select impression trays carefully, and make sure they are large enough. If a tray is too small, it is not possible to seat the impression deeply enough and if the rim of the tray touches the alveolus, it can be extremely painful. Use a deep tray that extends well into the sulcus. Trays can be either metal or disposable plastic. The metal trays will last many years but they need to be cleaned and sterilized after each impression. Disposable trays will be more expensive but the cleaning and sterilizing procedures are eliminated. If the trays do not have
CONTENTS 4.1 Clinical Examination .......................................................................................................................23 4.2 Study Models ....................................................................................................................................23 4.3 Bite Registration ...............................................................................................................................27 4.4 Orthodontic Space Analysis ...........................................................................................................27 4.5 Radiographs ......................................................................................................................................31 4.6 Cephalometric Tracing ....................................................................................................................35 References ...................................................................................................................................................38
