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Mcqs in dental materials by Gupta
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Mcqs in dental materials by Gupta

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  • 1. 1 Overview of Dental Materials 1. The overriding goal of dentistry is to a. Maintain or improve the quality of life of the dental patient b. Maintain or improve the quality of life of the dentist c. Alleviate pain d. Make money for the dentist Answer: a (p. 4*) Explanation This can be done by preventing disease, improving mastication efficiency, relieving pain, enhancing speech and improving appearance. 2. Which of the following is not a criterion for an ideal restorative material of choice? a. Biocompatible b. Permanent bond to the tooth structure c. Match the natural appearance of the tooth structure d. Degenerate in a short period of time Answer: d (p. 4) Explanation The material should be long lasting. Only in very specific clinical situations, it may be desirable for the material to degrade in a short period of time. * These page number references pertain to Philips’ Science of Dental Materials, 11th ed.Chapter-01.indd 1 6/1/2012 10:12:00 AM
  • 2. 2 MCQs IN DENTAL MATERIALS 3. Which of the following is an example of auxiliary dental material? a. Cast metal b. Ceramic c. Gypsum products d. Amalgam Answer: c (p. 6) Explanation Materials can be classified as preventive, restorative and auxiliary materials. A further classification according to the application, potential preventive benefits and durability is given on pages 5 and 6 of Philips’ Science of Dental Materials, 11th ed. 4. Dentistry as a specialty is believed to have begun in a. 5000 BC b. 4000 BC c. 3000 BC d. 2000 BC Answer: c (p. 6) Explanation Around 2500 BC, the Phoenicians used gold wires and bands on the teeth. The first book focused solely on dentistry was the Artzney Buchlein in 1530, and Charles Allen was the author of the first dental textbook written in English, Operator for the Teeth, in 1685. 5. Who is considered as the father of modern dentistry? a. Pare b. Pierre Fauchard c. Pfaff d. Taveau Answer: b (p. 6) Explanation Pierre Fauchard is considered as the father of modern dentistry and an academy has also been established in his honour. G.V. Black is also considered by the journal of operative dentistry as the father of modern dentistry for his phenomenal work on operative dentistry in 1908.Chapter-01.indd 2 6/1/2012 10:12:01 AM
  • 3. OVERVIEW OF DENTAL MATERIALS 3 6. The first seal of ADA acceptance was awarded in the year a. 1921 b. 1931 c. 1941 d. 1951 Answer: b (p. 10) Explanation The ADA seal of acceptance is considered by the patients and dentist as an important symbol of dental product safety and efficiency. 7. According to FDA, all implanted and life-saving devices are placed under which class of medical and dental items? a. Class I b. Class II c. Class III d. Class IV Answer: c (p. 13) Explanation Class I devices are low risk devices and they are subjected to general control. Class II devices are to meet performance standards established by FDA or appropriate standards from other authoritative bodies, such as ADA. Class III is the most stringent category which requires that the devices be approved for safety and effectiveness before they are marketed. All implanted and life- supporting devices are placed under this category. 8. The subcommittee under ISO TC 106 which deals with dental instruments is a. TC 106/SC 1 b. TC 106/SC 2 c. TC 106/SC 3 d. TC 106/SC 4 Answer: d (p. 15) Explanation The SC 1 is for filling and restorative material, SC 2 for prosthodontic materials, SC 3 for terminology, SC 6 for dental equipment, SC 7 for oral hygiene products and SC 8 for dental implants.Chapter-01.indd 3 6/1/2012 10:12:01 AM
  • 4. 4 MCQs IN DENTAL MATERIALS 9. The CE marking on the product label denotes that it is a. Certified and of excellent quality b. European mark of conformity with the essential requirements for that product c. Ethiopian certification of quality d. American mark of conformity with the essential requirements for that product Answer: b (p. 17) Explanation From 1st January 1995, all the medical devices marketed in the European Union were mandated to carry the CE mark as conformity with the essential requirements set by the medical device directive.Chapter-01.indd 4 6/1/2012 10:12:01 AM