Nbdhe dental Study guides, Class notes & Summaries

NBDHE Dental Hygienist Practice Test Questions with Verified Answers What is the primary purpose of using a dental mirror during an examination? a) To apply fluoride b) To provide indirect vision and reflect light c) To scale tartar from teeth d) To take X-rays Which type of dental material is commonly used for filling cavities? a) Dental amalgam b) Composite resin c) Both a and b d) Dental cement What does the term "periodontal" refer to in dentistry? 2 a) Teeth ...

Chapter 03: Radiation Characteristics Iannucci: Dental Radiography, 5th Edition MULTIPLE CHOICE 1. In dental radiography, the term ________ is used to describe the mean energy or penetrating ability of the x-ray beam. a. quality b. quantity c. intensity d. wavelength ANS: A Quality is used to describe the mean energy or penetrating ability of the x-ray beam. Quantity refers to the number of x-rays produced. Intensity is defined as the product of the quantity and quality per...

NBDHE Dental Hygienist Practice Test questions with correct answers

Hypersensitivity of a root lessens as the tooth forms which of the following? a. Periodontal Ligament b. Pulp c. Cellular cementum d. Enamel - correct answerc. Cellular cementum What nerve supplies the intrinsic muscles of the tongue? a. Trochlear b. Trigeminal c. Glossopharyngeal d. Hypoglossal e. Accessory - correct answerd. Hypoglossal .Which of the following is the most radioresistant? a. Glands b. Reproductive organs c. Bone Marrow d. Skin e. Nerves - cor...

Hypersensitivity of a root lessens as the tooth forms which of the following? a. Periodontal Ligament b. Pulp c. Cellular cementum d. Enamel - ANSWER c. Cellular cementum What nerve supplies the intrinsic muscles of the tongue? a. Trochlear b. Trigeminal c. Glossopharyngeal d. Hypoglossal e. Accessory - ANSWER d. Hypoglossal .Which of the following is the most radioresistant? a. Glands b. Reproductive organs

Adhesion Ans- the chemical attraction between *unlike* molecules Cohesion Ans- the chemical attraction between *like* molecules Coefficient of thermal expansion Ans- An index which indicates how one material reacts to temperature extremes in relation to another Compressive strength Ans- the force at which a material breaks under pressure Creep Ans- slow dimensional change caused by compression Ductility Ans- the ability to undergo change of form without breaking Elasticity Ans- a ...

Wilhelm Roentgen Ans- discovered the x-ray in 1895 he discovered x-rays while experimenting with a cathode ray tube ionization Ans- the production of ions (an atom that gains or loses an electron and becomes electrically unbalanced) ion pair Ans- when an electron is removed from an atom in the ionization process 1. the atom becomes the positive ion 2. the ejected electron becomes the negative ion ionizing radiation Ans- radiation that is capable of producing ions by removing or addin...

Adhesion Ans- The chemical attraction between unlike molecules Cohesion Ans- The chemical attraction between like molecules Coefficient of thermal expansion Ans- An index which indicated how one material reacts to temperature extremes in relation to another Compressive Strength Ans- The force at which a material breaks under pressure Creep Ans- Slow dimensional change caused by compression Ductility Ans- The ability to undergo change of form without breaking Elasticity Ans- Materi...

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