Explain reasons for the key features below of a dental laboratory/surgery?

Key features of a dental laboratory/surgery - 1) Instrument Drawer Unit 2) Amalgamator Slide And Cupboard Unit 3) Sink, Taps And Waste Bins 4) Air compressor 5) Dental chair and package 6) Handpiece care 7) Handpiece and motor 8) Ultrasonic scaler and tip 9) Suction system 10) X-ray and digital imaging http://www.equipdent.com/index.asp
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Just missing the patient, dentist and the staff !!
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