A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . sitions of the teeth and jaws, facial plastercasts, from plaster impressions which exactly represent the natural contours, arefar superior to facial photographs for all purposes of study and comparison of thefeatures at different stages of the operation, because they permit an examination ofevery outline from different angles of observation. If a plaster cast of the physiognomy is indicated, the operation should bedeferred until you have gained the fvdl confidence and friendline
A practical treatise on the technics and principles of dental orthopedia and prosthetic correction of cleft palate . sitions of the teeth and jaws, facial plastercasts, from plaster impressions which exactly represent the natural contours, arefar superior to facial photographs for all purposes of study and comparison of thefeatures at different stages of the operation, because they permit an examination ofevery outline from different angles of observation. If a plaster cast of the physiognomy is indicated, the operation should bedeferred until you have gained the fvdl confidence and friendliness of the patient. 142 PART V. PRIMARY PRINCIPLES OF PRACTICE Without this, all operations which require for their success the full co-operationof the patient should not be undertaken. Say nothing to young patients upon the subject of an impression of the faceuntil you are all ready to take it. Then treat it as a matter of course and withno apparent thought that there will be any objection. Explain what you are goingto do and just how they are going to help you; tell them it will not give the slightest Fig. pain, and will only take about ten minutes. Exclude parents and friends from theroom, or at least from standing by the chair, and have no one looking on within theirsight after you commence with the plaster. If the patient is young, do not let himsee that this is an intentional ostracism. You know the eflfect which the conscious-ness of some one gazing into your face would have upon your control of the facialmuscles during a long sitting for a photograph, and how this would be increased if youwere allowed to catch the eye from time to time of an acquaintance or the patient well inclined in an easy position with the face turned fromyou, and make all preliminary arrangements with the least possible appearance ofpreparing for a difficult, or even a particular operation. CHAPTER XVII. IMPRESSIONS AND CASTS 143 Have ready a small quantity of white perfumed va
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