Chapter 1-21 Chapter 01: Properties and Care of Dental Instruments 1. What part of a dental instrument executes precise functions? a. The working end b. Shank c. Handle d. A combination of the working end, shank, and handle ANSWER: a FEEDBACK: a. Correct. The working end of a dental instrument performs the instrument’s function. (Dental Assisting Instruments and Materials Guide, 3e, p. 2) b. Incorrect. The working end of a dental instrument performs the instrument’s function. (Dental Assisting Instruments and Materials Guide, 3e, p. 2) c. Incorrect. The working end of a dental instrument performs the instrument’s function. (Dental Assisting Instruments and Materials Guide, 3e, p. 2) d. Incorrect. The working end of a dental instrument performs the instrument’s function. (Dental Assisting Instruments and Materials Guide, 3e, p. 2) 2. Dental instruments are usually made from all of the following materials EXCEPT: a. Plastic/resin b. Stainless steel c. Anodized aluminum d. Nickel ANSWER: d FEEDBACK: a. Incorrect. The majority of dental instruments are made of anodized metal, stainless steel, and plastic/resin. (Dental Assisting Instruments and Materials Guide, 3e, p. 2) b. Incorrect. The majority of dental instruments are made of anodized metal, stainless steel, and plastic/resin. (Dental Assisting Instruments and Materials Guide, 3e, p. 2) c. Incorrect. The majority of dental instruments are made of anodized metal, stainless steel, and plastic/resin. (Dental Assisting Instruments and Materials Guide, 3e, p. 2) d. Correct. The majority of dental instruments are made of anodized metal, stainless steel, and plastic/resin. (Dental Assisting Instruments and Materials Guide, 3e, p. 2) 3. Why are some handles of dental instruments ergonomically designed? a. It is specific to the manufacturer. b. It is the dental team’s personal preference. c. They provide a better grip and simpler handling. d. They provide a better grip and simpler handling.