Dental Hygiene Board Review Test Questions with Correct Solutions

Ascorbic Acid (Vitamin C) - Which vitamin is necessary for hydroxylation reactions in collagen synthesis? Hypoxia - The greatest risk associated with inhalation as a route of drug administration is trigeminal neuralgia - which disease is characterized by sharp pain confined to one side of the face and is often initiated by touching a "trigger zone"? foreshortening - in a PA radiograph, the major change caused by increasing the vertical angle when using the bisecting angle technique is what? Ability to metastasize - What is the most important characteristic of malignant neoplasms that distinguishes them from benign neoplasms? increased kVp - what allows for greater penetration of X-rays? An irreversible hydrocolloid - an alginate impression material is classified as what? a salivary duct calculi - a patient complains of pain in the floor of his mouth. he notes that a swelling arises in this area when he eats. this condition is most likely associated with ________ fixer - what removes unexposed silver halide crystals from a film during processing? developer - what solution reduces the exposed silver halide crystals down to a black metallic silver during processing? green stain from chromogenic bacteria - which of the following stains can be removed during oral prophylaxis polishing? yellow stain from jaundice gray stain from tetracycline green stain from bacteria brown stain from stannous fluoride black stain from silver nitrate application IgA - Which antibody is predominantly found in exocrine secretions such as saliva? leukocytosis - Which of the following blood conditions is likely to be found in a patient with a bacterial infection? leukopenia leukocytosis eosinophils agranulocytosis renal disease - which of the following does not delay metabolic transformation of a drug? renal disease liver disease storage in tissues extensive protein binding presence of other drugs that inhibit metabolism amyl nitrate - which of the following agents is not used in desensitizing agents? formaldehyde amyl nitrate stannous fluoride strontium chloride APF fluoride The suture is embedded in the dressing & the dressing is retained interproximally - One week after periodontal flap surgery, the dressing is difficult to remove. What may cause this difficulty? the suture is embedded in the dressing improper portions were used in mixing the dressing is retained interproximally the dressing is embedded in the gingiva tablets, dentifrice and brush on gel - A 3 y.o. child lives in a non fluoridated area and has rampant decay. Which of the following home care regimens, with parental supervision, is suitable for the child? fluoride tablets fluoride dentifrice fluoride mouth rinse brush on fluoride gel formation of corrosion products (corrosive products can gather around the margins of the restoration and block the micro leakage) - as a dental amalgam restoration ages, micro leakage decreases because of: fluoride release galvanic currents increase in surface flow increase in edge strength formation of corrosion products Bone marrow - Which of the following is most sensitive to the effects of radiation? Neurons Optic Lens Muscle cells Bone marrow Mature erythrocytes palatine and maxillary - what two bones form the floor of the nasal cavity? sphenoid palatine frontal maxillary lacrimal lateral pterygoid - which muscle protrudes the mandible? masseter temporalis lateral pterygoid medial pterygoid digastric more spirochetes more fusobacteria - Sub gingival plaque differs from supra plaque in that sub gingival plaque commonly has: more spirochetes more streptococci more fusobacteria more dextran in the matrix a pellicle formed by saliva Metronidazole - Which of the followings drugs acts upon anaerobic organisms of NUG? nystatin penicillin amoxicillin metronidazole griseofulvin plasma cell - which of the following cells is most active in antibody production? monocyte mast cell lymphocyte plasma cell PMNs