The influence of sprue design on cobalt chromium alloy casting defects.
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Biomedical subjects
Publications and source records attributed to R D Manderson.
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A randomly selected population of 442 persons in Edinburgh was interviewed and examined. Although 71 % of the sample required treatment, only 52 % were physically and mentally able to benefit from treatment. Thirty percent of the sample were able to use public transport to attend a dentist, 66 % would require cars and ambulance transport and 4 % were bedridden and would require domiciliary dental services. Twenty-one percent of the sample had thought about seeking dental treatment, while only 25 % had heard how to claim exemption from or help towards dental charges. Edentulousness was present in 91 % of the sample, only 41 persons having remaining natural teeth. Seventy-three percent were wearing dentures which required adjustment or replacement, but only 39 % thought their dentures were unsatisfactory. In 58 % of the patients the oral tissues were so deformed or resorbed that the prosthodontic treatment needed would be complex and require special skills. Half of the sample had some form of denture-induced pathology which required either conservative or surgical treatment.
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As with all maxillofacial prostheses, the management of large combined oral and facial prostheses require preoperative planning and cooperation between the surgeon, prosthodontist, and dental technician. Improvisation is particularly necessary during the early phases of treatment. Treatment objectives are to restore the skeletal defect, teeth, masticatory function, and appearance--all of which contribute to the patient's morale. Clinical care for a patient with a large intraoral and facial defect is presented.