Practice exam Answers PDF

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Practice exam questions Question One You have recently moved to a small town in the north of NSW, an area which is non fluoridated. As a dental hygienist in the local dental practice, you have been asked by the local council to speak to a group of anti-fluoridationists. a) Describe how fluoride benefits tooth structure. (6) Inhibits demineralisation Encourages remineralisation/low levels fl in saliva Formation of larger flourapatite crystals Inhibits acid formation Interferes with growth of microorganisms Systemically/topically/preeruptive/posteruptive mechanisms b) What is the optimum concentration of fluoride in water and describe why its level differs nationally. (3) 0.7-1.0ppm. Differs due to naturally occurring fluoride, whether water is artificially fluoridated, climate. c) How would you convince this group of people that fluoride is in fact beneficial? (6) Any of the following points: Fl present naturally Fl in water supply at much lower level than occurs naturally No scientific evidence (note studies undertaken) Importance of fl in water during development of teeth and once erupted/saliva Fl occurring in produced food, drink, commercially produced toothpastes Photos of decay and problems associated with early loss of teeth Assess fl in water supply of centres they frequent (eg schools/preschools) Benefits of fl to teeth d) Name the oral condition that may present if there are excessive amounts of fluoride in the water (1) Fluorosis Question Two As a dental hygienist you have recently relocated to a remote country town. The dentist in the practice that you work in visits the residents of the local nursing home and has asked you to see an elderly woman with severe arthritis. a) How can her daily oral hygiene regime be made easier for someone with her medical condition? (5) Use of electric toothbrush or modified manual toothbrush with larger handle (easier use with arthritis) Use of floss aids such as Reach flosser/flossette Use of piksters rather than floss if possible Assistance with oral hygiene from a carer Use of fluoride mouthwash if plaque control difficult and caries risk high b) What tools could we use to assess her diet? Give a brief description of each (4) 24 hour recall – exact intake in previous 24 hour period, includes detail on cooking methods and brands Weighed food record – all food consumed is weighed and recorded across a number of days

Diet history – usual intake of food over extended period, comprises 24 hour recall plus extended eating patterns Food frequency questionnaire – qualitative description about usual food consumption, looks at list of foods and frequency of consumption c) Describe the information that is usually recorded in a patient’s file. (10) Patient records include: a. Medical history b. Charts (Odontogram and Periodontal Charts) c. Radiographs d. Study models e. Photographs f. Test results g. Consent forms h. Notes – Reason for attendance, chief complaint, extra oral exam, intra oral exam, diagnosis, treatment plan, treatment provided d) Why is it important to maintain accurate dental records? (3) Legal requirement Serve the best interests of patients Contribute to the safety and continuity of dental care Question Three The director from the local child care centre has asked you to come and speak with the children that attend the centre about dental health. a) Describe what information you would need before presenting your talk. (7) What are your aims/objectives Are you trying to change or introduce a new behavior? Know your audience How long? What resources? Projector, venue etc Rehearse Risk Assessment b) Name 3 useful resources to help with your presentation. (3) Poster, charts, booklets, brochures, handouts c) List 5 areas of dental health education that you would provide the children with from this child care centre. (5) Eat well, Drink well, Clean well, Play well, Stay well (With brief, one sentence description of each)...