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DH Theory I Final Dental Hygiene
Which food has a higher amount of fluoride? a. Meat b. Tea c. Eggs d. Vegetables - ANS- B Brewed tea typically contains higher levels of fluoride than most foods, depending on the type of tea and its source, because tea plants take up fluoride from soil [1,3]. Fluoride levels can range from 0.3 to 6.5 mg/L (0.07 to 1.5 mg/cup) in brewed tea made with distilled water [3] Some incipient carious lesions may be arrested with the application of pit and fissure sealants. An adult patient with xerostomia is contraindicated for sealant placement. a. Statement A is incorrect and statement B is correct. b. Statement A is incorrect and statement B is incorrect. c. Statement A is correct and statement B is correct. d. Statement A is correct and statement B is incorrect. - ANS- D What is the maximum amount of NaF that can be dispensed per household at one time? a. There is no limit to the amount dispensed per household. b. No more than 396 mg NaF (180 mg of fluoride) c. No more than 132 mg NaF (60 mg of fluoride) d. No more than 264 mg NaF (120 mg of fluoride) - ANS- D The maximum amount of sodium fluoride (NaF) that can be dispensed at one time is 264 mg (120 mg fluoride). This is the recommended amount for fluoride supplements, fluoride rinses, and gels. What are the purposes of isolating the teeth being sealed? a. To keep the acid etch away from the teeth and only on the soft tissue b. To keep the teeth from contacting the soft oral tissues c. To keep the teeth from saliva contamination
d. To keep the teeth damp for optimum bonding action - ANS- C If resin-based dental sealant material is used, meticulous isolation of tooth surfaces to avoid saliva contamination is a critical step in the sealant-application process. Which of the following enamel surfaces will absorb the most fluoride when exposed in the oral environment? a. Exposed enamel in the furcation area of # b. Demineralized enamel on the facial surface of # c. Enamel covered by a dental sealant d. The palatal root of the maxillary first molar e. Sound enamel on the facial surface of #8 - ANS- B Which one of the following is NOT an accurate statement concerning testing instrument sharpness? a. Test for sharpness after one or two strokes b. Apply testing stick along the entire cutting edges c. Use metal 1/4-inch rod, 3 inches long d. When instrument is sharp it engages the test stick. - ANS- C Which of the following is not an indication for sealant placement? a. Proximal dental caries b. Xerostomia c. Incipient caries d. Patient is undergoing orthodontics. - ANS- A What is the correct dietary fluoride supplement for a 4-year-old child who lives in an area that has a 0.5 ppm concentration of fluoride in the water? a. No supplement is recommended b. 2.0 mg c. 0.25 mg d. 0.5 mg e. 1.0 mg - ANS- C
c. evidence-based care d. diagnosis. - ANS- C All of the following are components of the dental hygiene process of care except: a. assessment. b. implementation. c. treatment planning. d. dental diagnosis. - ANS- D The outcomes evaluation of phase I of the master treatment plan includes all of the following except: a. calculus removal. b. dental biofilm control. c. patient's participation. d. probing depths. e. clinical signs of inflammation. - ANS- A Which of the following is a purpose of a sealant? a. To prevent decay on smooth tooth surfaces b. To provide a physical barrier to seal off pits and fissures c. To restore a decayed tooth d. To seal oral bacteria into the pit or fissure - ANS- B Inflammation into the deeper periodontal structures with slight bone loss and connective tissue attachment describes which periodontal classification type? a. Type IV b. Type I c. Type III d. Type II - ANS- D All of the following statements regarding power toothbrushes are true except one. Which statement is the exception? a. Power brushes are evaluated by the ADA Council on Scientific Affairs.
b. Current power brushes move in speeds and motions that cannot be duplicated by manual brushes. c. Power brushes have evolved through time due to improved designs and features. d. Power brushes do not offer a great variety in the manner in which the bristles/head moves. e. Research has shown consistently that power brushes are more effective than manual. - ANS- D An example of a dental hygiene diagnostic statement is: a. caries present require restorations. b. blood pressure of 160/95 mm Hg is hypertension. c. white keratotic lesion is leukoplakia. d. gingival bleeding related to plaque accumulation. - ANS- D You have a cousin living in Tempe, Arizona. She told you that her community has recently begun adding fluoride to the community drinking water. What would be the optimum concentration in the water supply for your cousin? a. 2.0 ppm b. 0.7 ppm c. 2.5 ppm d. 1.2 ppm e. 1.5 ppm - ANS- B Which of the following is true for completion of the etching process? a. Do not dry b. Rinse thoroughly and then dry c. Do not rinse d. It is no longer necessary to keep isolated after etching. e. Surface should appear shiny white - ANS- B When teaching a patient to use floss, all of the following instructions should be given except: a. snap floss through the contact area. b. grasp with only a half-inch of floss between fingertips.
a. The permanent teeth do not form until after birth, so this will not help with the child's permanent teeth. b. Good, but be sure to continue with the supplements after delivery while nursing for extra help. c. That sounds like a great idea; keep it up! d. The fluoride can harm the fetus and should not be taken while pregnant. - ANS- A Which of the following is the primary objective of the dental hygiene plan for periodontal therapy? a. Remineralize the patient's teeth b. Reduce the patient's overall accumulation of biofilm c. Restore and maintain health of the periodontal tissues d. Reduce the patient's risk for dental caries - ANS- C Which of the following statements is true about the interdental anatomy? a. Between adjacent posterior teeth there is a single papillae and no col area. b. Col epithelium is thick and keratinized. c. Between adjacent anterior teeth there are two papillae. d. The col epithelium is very resistant to infection. e. The papillae are connected by a col. - ANS- E The dental hygiene care plan includes all of the following except: a. interventions to reduce caries. b. plans for prevention. c. periodontal/gingival health plan. d. economic considerations for services. - ANS- D The maximum caries-inhibiting effect of fluoride is seen when there has been systemic exposure prior to tooth eruption and which of the following? a. Professional application of neutral sodium fluoride b. Home use when caries are suspect c. Professional application of APF fluoride d. Continual use of fluoride supplements after eruption
e. Frequent topical fluoride exposure throughout life - ANS- E A wooden interdental cleaner would be appropriate for biofilm removal with a patient who has what type of embrasures? a. Type II b. Anterior c. Posterior d. Type III - ANS- D Which of the following chemicals would most likely be used in community water fluoridation? a. Acidulated phosphate fluoride b. Sodium monofluorophosphate c. Stannous fluoride d. Hydrofluorosilicic acid - ANS- D What are the two methods of polymerization? a. Photo polymerized and autopolymerized b. Visible-light polymerized and photo polymerized c. UV polymerized and solar polymerized d. Self-cured and autopolymerized - ANS- A The halo/diffusion effect: a. lowers the amount of fluoride in fluoridated water to an optimum level for the prevention of dental caries and dental fluorosis. b. the reduction in the absolute measurable benefits of the effectiveness of an intervention. c. exerts an inhibitory action on the progress of dental caries. d. occurs when foods and beverages processed in a fluoridated community are consumed in a nonfluoridated community. - ANS- D Removal of stains is for esthetic, not for health, reasons. Stains on the teeth are etiologic factors for disease or destructive processes. a. Both statements are false.
The incidence of gingivitis is greatest in what area? a. Posterior palatal tissues b. Interdental tissues c. Gingival margin d. Anterior facial tissues - ANS- B All of the following medical conditions are considered contraindications for polishing except one. Which one is the exception? a. Anemia b. Asthma c. Cystic fibrosis d. Tuberculosis e. Emphysema - ANS- A Your patient Mr. Todd has come into the office for his 6-month recare appointment. Mr. Todd tells you that he has had a constant toothache around #3 and that it seems to be getting worse. Mr. Todd is not due for radiographs and is anxious for you to start because he has a lot of stain on his front teeth. Mr. Todd explains to you that he no longer has insurance and hopes the prophylaxis won't cost him too much. The chief complaint is: a. Mr. Todd's concern about the cost of treatment. b. Mr. Todd's radiographs. c. Mr. Todd's stain on his front teeth. d. Mr. Todd's toothache. - ANS- D Amy, a young patient, presents for a maintenance appointment. She states that she was married a few months ago. When she comes into the treatment room she seems very quiet and avoids eye contact with the dental hygienist, which is unlike her normal personality. The hygienist also notes that Amy looks very tired. The hygienist notices when Amy is sitting with her back to the therapist that some of her hair is missing. Upon completion of the oral assessment the following was noted: generalized moderate gingivitis; Class II mobility on #6, 7, and 8; distoincisal edge fracture on #7; and a 4-mm scar on the vermillion border of the upper lip. Amy explains that she slipped and fell on a wet kitchen floor and the hair loss is caused by some hormonal changes. She could not remember how she got the scar. The dental hygienist is not sure that Amy is telling the truth and has some concerns about sexual abuse. Reference: Ref 62- - ANS- A
Phenolic compounds do which of the following? a. Disrupt the bacterial cell wall b. Promote oral wound healing c. Reduce caries d. Interfere with bacterial glycolysis e. Inhibit alcohol absorption - ANS- A The water flowing through a powered instrument tip forms tiny bubbles that collapse, producing shock waves that destroy bacteria by tearing the bacterial cell walls. This mechanism of action is termed _____. a. deplaquing b. aerosol production c. cavitation d. acoustic turbulence - ANS- C When working with a powered instrument, the swirling effect produced by the water stream within the confined space of a periodontal pocket is termed _____. a. acoustic microstreaming b. deplaquing c. aerosol production d. cavitation - ANS- A How many times a powered instrument tip vibrates in 1 second is known as the _____. a. stroke b. power c. adjustment d. frequency - ANS- D Sustain talk means: a. the individual's own arguments for not changing. b. transition in the way a patient acts.
e. Postsurgical for enhanced wound healing - ANS- B Case Study 1 You have been hired as a dental hygienist at the Health Department dental clinic in your county. The patient population in this facility is predominately low income. There is no community water fluoridation in the area. Most of your patients do not follow a healthy lifestyle through diet and exercise. Reference: Ref 27- 1 Open and read the attached case to answer the following question. Your employer has decided to send the caries risk "Oral Health Check Sheet" to his patients and ask that they fill it out and bring it to their next appointment. This checkoff sheet lists 10 questions associated with a patient's caries risk. Is this a good choice by your employer and why? a. Yes. This will be convenient for patients to complete at home and bring in. b. No. Most patients will learn very little about their problem if merely given a checklist to fill out. c. No. This will cost the dentist too much money in - ANS- A Complex reflective listening is: a. rephrasing the content that was relayed to you by the patient. b. adding meaning to what the patient said. c. Making a guess on the unspoken content. d. A and B. e. A and C. F. B and C - ANS- F MI has been applied successfully within many health professions. It explains the clinician's own ideals for behavior change onto the patient. a. Both statements are true. b. First statement is false, and second statement is true. c. Both statements are false. d. First statement is true, and second statement is false. - ANS- D
According to tooth development and eruption patterns, the last primary teeth to fully develop in the mouth including the root and the enamel layer are the a. lateral incisors. b. first molars. c. Canines d. central incisors. e. second molars. - ANS- C When air polishing is used, the orifice of the handpiece nozzle is kept in a constant circular motion, with the nozzle tip at what distance from the enamel surface? a. Touching the enamel surface b. Should not be used on enamel surfaces c. 4 to 5 mm away from the enamel surface d. 6 to 8 mm away from the enamel surface e. 1 to 2 mm away from the enamel surface - ANS- C Which of the following active ingredients is found in an anticalculus dentifrice? a. Sodium citrate b. Strontium chloride c. Zinc chloride d. Potassium nitrate - ANS- C Learning occurs when individuals: a. are motivated to practice good oral health habits. b. have received thorough oral hygiene instructions. c. change their beliefs and attitudes about oral health. d. acquires the knowledge or skills through study or instruction. e. understand the concepts presented to them. - ANS- D When completing oral assessments on a 5-year-old the hygienist notes red and edematous gingival tissue with multiple ulcerations present on the labial mucosa. This describes what? a. Primary herpetic gingivostomatitis
You have been hired as a dental hygienist at the Health Department dental clinic in your county. The patient population in this facility is predominately low income. There is no community water fluoridation in the area. Most of your patients do not follow a healthy lifestyle through diet and exercise. Reference: Ref 27- 1 Open and read the attached case to answer the following question. You have been asked by your employer to develop a caries management strategy that covers all of the patients' needs. Which of the following is not an objective for this caries management strategy? a. Determine restorative treatment needs b. Determine the patients' financial situation c. Determine areas that require remineralization d. Define steps for remineralization program - ANS- B Which of the following is an accurate description of aerosol containment? a. Use a new saliva ejector every 15 minutes during air polishing. b. Instruct patients to rinse with an antimicrobial agent after air polishing. c. Use HVE to reduce airborne contamination. d. During treatment, low-volume suction evacuators should be used. - ANS- C Which agent is the most effective in commercial dentifrices for the reduction of dentin hypersensitivity? a. Triclosan b. Stannous fluoride c. Potassium nitrate d. Zinc chloride e. Chlorhexidine - ANS- C What type of abrasions and lacerations may indicate child abuse? a. Skinned knees and elbows b. Varying degrees of healing c. Deep lacerations requiring sutures d. Bluish coloring on face - ANS- B
Amy, a young patient, presents for a maintenance appointment. She states that she was married a few months ago. When she comes into the treatment room she seems very quiet and avoids eye contact with the dental hygienist, which is unlike her normal personality. The hygienist also notes that Amy looks very tired. The hygienist notices when Amy is sitting with her back to the therapist that some of her hair is missing. Upon completion of the oral assessment the following was noted: generalized moderate gingivitis; Class II mobility on #6, 7, and 8; distoincisal edge fracture on #7; and a 4-mm scar on the vermillion border of the upper lip. Amy explains that she slipped and fell on a wet kitchen floor and the hair loss is caused by some hormonal changes. She could not remember how she got the scar. The dental hygienist is not sure that Amy is telling the truth and has some concerns about sexual abuse. Reference: Ref 62- - ANS- A How far the tip of a powered instrument tip moves during one cycle is known as the _____. a. stroke b. frequency c. adjustment d. power - ANS- A Within the process of dental hygiene care, the needs of a patient are assessed on the basis of which of the following? a. Histories and clinical findings b. Preventative care plan c. Health education d. Initial instruction session - ANS- A Ryan is a 3-year-old child who presents for his first dental appointment. His mother accompanies him to the operatory room. He willingly climbs into the dental chair sporting a big smile. You observe that he has an open bite and his maxillary right central incisor is dark in appearance. He is very cooperative as you begin the dental hygiene appointment. The examination reveals several teeth with caries on the occlusal surfaces. Reference: Ref 50- 1
a. is an interactive tutorial program that utilizes case studies to explain the four- step process in response to domestic violence. b. a provider-focused initiative to promote the assessment and prevention of IPV in the healthcare setting. Pg. 1053 c. a public-private partnership committed to the education of all dental professionals in the recognition and reporting of suspected cases of child abuse and neglect. d. none of the above. - ANS- B Child development milestones indicate a 3-year-old should be able to hold a toothbrush and brush his teeth on his own. Parent involvement in brushing is not needed at this stage of development. a. The first statement is true and the second statement is false. b. Both statements are false. c. Both statements are true. d. The first statement is false and the second statement is true. - ANS- B Providing oral health information to parents related to the child's stage of development to better meet the child's needs is known as: a. anticipatory guidance. b. preventive dental education. c. assessment and preventive care. d. oral health education. e. oral health planning. - ANS- A You have been hired as a dental hygienist at the Health Department dental clinic in your county. The patient population in this facility is predominately low income. There is no community water fluoridation in the area. Most of your patients do not follow a healthy lifestyle through diet and exercise. Reference: Ref 27- 1 Open and read the attached case to answer the following question. When a patient presents with no dental caries, which of the following treatment options would not be recommended? a. Review the factors with the patient that put him or her in the "low risk" category b. Be glad that the patient is caries free and leave well enough alone
c. Provide the patient with positive care and education so that dental health will be maintained d. Evaluate and supervise plaque control measures at routine maintenance appointments - ANS- B Saliva has many protective functions in the oral cavity. Which of the following is the most important protective property of saliva in the caries process? a. Aid in digestion b. Carrier of antibodies c. Aid in speech d. Buffering of acids - ANS- D Sodium bicarbonate powder is characterized by all of the following except: a. Can be used for stain removal on enamel surfaces b. Contraindicated for patients on sodium-restricted diets c. Recommended for root surfaces - ANS- C All of the following are considered fermentable carbohydrates except one. Which of the following is not a fermentable carbohydrate? a. Cooked starch. b. Fructose c. Xylitol d. Sucrose e. Glucose - ANS- C Your patient has just informed you that his previous hygienist told him that swishing vigorously would get the antibacterial rinse into his 5-mm pockets. How far subgingivally can rinsing deliver an agent? a. 8 mm b. 2 mm c. 6 mm d. 4 mm - ANS- B
