After preparing a site in {HEAD ~ the mouth} of a patient to receive a dental prosthesis, the dental surgeon projects optically a grating upon said site in the mouth of the patient and generates an interference pattern representing a holistic impression of said site and its relationship to {TAIL ~ adjacent structures} 
After preparing a site in { HEAD ~ the mouth } of a patient to receive a dental prosthesis , the dental surgeon projects optically a grating upon said site in the mouth of the patient and generates an interference pattern representing a holistic impression of said site and its relationship to { TAIL ~ adjacent structures }
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