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DANB General Chairside Practice Exam Questions with COMPLETE 100% VERIFIED SOLUTIONS 2024/, Exams of Health sciences

DANB General Chairside Practice Exam Questions with COMPLETE 100% VERIFIED SOLUTIONS 2024/2025

Typology: Exams

2023/2024

Available from 07/09/2024

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Download DANB General Chairside Practice Exam Questions with COMPLETE 100% VERIFIED SOLUTIONS 2024/ and more Exams Health sciences in PDF only on Docsity!

DANB General Chairside Practice

Exam Questions with COMPLETE

100% VERIFIED SOLUTIONS

2024/

Which of the following is an adverse effect of peroxide-based tooth whitening procedures? A) increased caries B) extrinsic staining C) tissue irritation D) decreased saliva C) tissue irritation Elastomeric materials supplied as a base and catalyst are A) post-cured B) pre-cured C) light-cured D) self-cured D) self-cured The employee who receives insurance as a benefit through an employer is considered to be the insurance A) provider B) carrier C) subscriber D) beneficiary C) subscriber Which of the following cements MUST be mixed on a cool, dry glass slab? A) zinc phosphate B) glass ionomer C) polycarboxylate D) calcium hydroxide A) zinc phosphate What type of orthodontics is practiced when using a fixed or removable appliance that is applied to a crossbite?

A) corrective B) interceptive C) preventive D) limited B) interceptive Which of the following is the correct manner for passing an instrument to a right-handed dentist using the two-handed instrument transfer technique? Pass the instrument with the A) left hand, picking it up by the non-working end B) right hand, picking it up by the working end C) right hand, picking it up by the non-working end D) left hand, picking it up by the working end B) right hand, picking it up by the working end Which of the following home-care products will treat demineralized enamel? A) mouthwash B) fluoride C) floss D) toothpaste B) fluoride In the event of excessive fluoride ingestion, which of the following should be consumed? A) crackers B) fruit C) water D) milj D) milk Which of the following cells is responsible for formation of bone? A) osteoblasts B) osteoclasts C) ondontoclasts D) odontoblasts A) osteoblasts An elevated body temperature is likely to be found in which of the following patients? A) 2 year old B) 15 year old C) 40 year old D) 25 year old A) 2 year old

What portion of insurance form requires the patient's signature to authorize direct pay to the provider? A) assignment of benefits B) direct reimbursement C) informed consent D) release of information A) assignment of benefits Which of the following instruments would be found on the root planing tray setup? A) gingival margin trimmer B) straight elevator C) universal curette D) t-ball burnisher C) universal curette To assist in providing appropriate patient care, the patient's health history should be reviewed and updated A) every two years B) at every recall appointment C) annually D) at each visit D) at each visit An exothermic reaction occurs during the mixing of which cement type? A) zinc oxide eugenol B) glass ionomer C) resin-based D) zinc phosphate D) zinc phosphate Which of the following materials CANNOT return to the sole state after becoming a gel? A) alginate B) elastomeric C) polyether D) bite registration A) alginate Which of the following should be included in the tray setup for a sealant application? A) floss B) abrasive strips C) cleoid-discoid D) spoon excavator

A) floss What procedure will prevent the leakage of saliva when placing a dental dam for moisture control? A) lubricating the underside of the dental dam B) using stabilizing cord between the contacts C) placing a softened wax compound around the clamp D) inverting the edges of the dental dam D) inverting the edges of the dental dam When scheduling appointments, allowing for buffer times permits later scheduling for patients in need of A) dental prophylaxis B) continuing dental care C) emergency dental care D) major restorative work C) emergency dental care Which of the following bur numbers designates a straight fissure plain cut but? A) 75 B) 56 C) 34 D) 18 B) 56 For a patient who becomes increasingly anxious and exhibits difficulty breathing including coughing and wheezing, what drug should be administered? A) bronchodilator B) insulin C) nitroglycerin D) nitrous oxide A) bronchodilator If a patient is complaining of unexplained chest pain it should be treated as a potential A) myocardial infarction B) GERD flare-up C) stroke D) angina attack A) myocardial infarction Pitting on the enamel surface resulting from excessive fluoride consumption is known as A) systemic fluoride B) fluoride poisoning

C) fluoride toxicity D) fluorosis D) fluorosis If a blood pressure reading of 142/96 is obtained on an adult, it is classified as A) normal B) pre-hypertension C) hypotension D) hypertension D) hypertension Which of the following medical conditions is a contraindication for using nitrous oxide? A) hypertension B) angina C) emphysema D) diabetes C) emphysema A patient whose medication profile indicates that he is taking an angiotensin-converting enzyme (ACE) inhibitor or diuretic would likely have what medical condition? A) epilepsy B) diabetes C) angina pectoris D) hypertension D) hypertension Spreaders and pluggers are used in the A) placement of an amalgam restoration B) seating of a Maryland bridge C) placement of gold foil D) obturation of a root canal D) obturation of a root canal The dental office emergency kit should be A) routinely checked every two years B) in a central location with easy access C) on a high shelf out of the way D) checked and refilled daily B) in a central location with easy access Which of the following is one symptom of damaged pulp tissue? A) inner ear pain B) gingivitis

C) sinus pressure D) pain during mastication D) pain during mastication The correct sequence of dental instruments for a Class 1 amalgam restoration tray, based upon order of use is A) burnisher, condenser, excavator, cleoid-discoid B) condenser, burnisher, cleoid-discoid, excavator C) cleoid-discoid, burnisher, excavator, condenser D) excavator, condenser, burnisher, cleoid-discoid D) excavator, condenser, burnisher, cleoid-discoid Emergency preparedness includes posting which phone numbers next to each telephone throughout the dental practice? A) state dental board and CDC B) local police, EMS, and fire department C) health department and hospital D) local physician's office and poison control B) local police, EMS, and fire department A properly etched tooth surface will appear A) dry B) roughened C) wet D) frosty D) frosty Which of the following vitamins is vital to tooth development? A) E B) K C) D D) A C) D A diabetic patient's appointment time is best scheduled A) after meal time B) in the late evening C) in the early morning D) before mealtime A) after meal time What instrument would be used to smooth the edges of a stainless steel crown after adjusting its height?

A) green stone B) crown and bridge scissors C) inverted cone bur D) contouring and crimping pliers A) green stone Which of the following instruments will be passed in a manner for the dentist to employ a palm grasp? A) rongeours B) amalgam carrier C) Kirkland knife D) cotton pliers A) rongeours Before applying or using anesthetic, the patient's record should always be reviewed to avoid A) hypertension B) low blood pressure C) allergic reaction D) abnormal pain C) allergic reaction Vitality response by use of low-frequency current involves which of the following procedures? A) percussion and palpitation B) electronic pulp testing C) radiographic imaging D) thermal sensitivity testing B) electronic pulp testing What is a nonmalignant (benign) bony growth of the maxilla? A) granuloma B) torus palatinus C) anodontia D) glossitis B) torus palatinus Elevating the patient's feet above the head to increase blood flow to the brain is the response to what medical condition? A) diabetes B) allergic reaction C) heart problems D) syncope D) syncope

Calcium hydroxide used in a restorative procedure is an example of a/an A) varnish B) dentin sealer C) liner D) etchant C) liner Which of the following dental aids should a patient use to detect the presence of plaque? A) toothpaste B) disclosing agent C) caries detection agent D) whitening gel B) disclosing agent The use of vasoconstrictors in local anesthesia is CONTRAINDICATED for patients with a history of A) asthma B) unstable angina C) penicillin D) hypoglycemia B) unstable angina Which of the following forms of oral cancer first presents as a clinically visible lesion on soft tissue? A) sarcoma B) radionecrosis C) leukemia D) carcinoma D) carcinoma Which diagnostic aid would be most effective for identifying interproximal caries? A) periodontal probe B) laser detector C) intraoral camera D) bitewing radiograph D) bitewing radiograph Which of the following should be done FIRST if an adult patient does not have a pulse? A) call for emergency assistance B) administer CPR C) administer oxygen D) call the patient's medical doctor

A) call for emergency assistance What factor will be considered when determining the reorder point for dental supplies? A) shelf life B) lead time C) price break D) reorder quantity B) lead time Which of the following solutions is contraindicated for the storing of a relined prosthesis? A) warm water B) salt water C) nonalcoholic mouthwash D) undiluted beach D) undiluted bleach Which of the following is a CONTRAINDICATION to the coronal polishing procedure? A) missing teeth B) hypersensitive teeth C) recently scaled teeth D) restored teeth B) hypersensitive teeth When filing patient records, which of the following would come first in the alphabetic sequence? A) Jane Ann Smith B) Jane Smith C) Jane A. Smith D) J. A. Smith D) J. A. Smith To store premixed zinc oxide-eugenol periodontal dressing, it should be wrapped in A) waxed paper and frozen B) foil and kept at room temperature C) plastic and kept in a moist environment D) paper towels and kept in a dry environment A) waxed paper and frozen The most critical aspect of effective communication is the ability to implement A) empathy skills B) listening skills C) nonverbal skills D) questioning skills B) listening skills

Which biopsy procedure involves removal of the entire lesion along with normal adjacent tissue? A) aspirational B) excisional C) incisional D) exfoliative B) excisional Which of the following would be included in the tray setup for the delivery of a full denture? A) saline solution B) articulating paper and holder C) prophy cup and paste D) dental compound B) articulating paper and holder A correctly fitting impression tray has sufficient depth to leave a minimum occlusal/incisal clearance of A) 1.0 mm B) 2.0 mm C) 0.5 mm D) 1.5 mm B) 2.0 mm Fast set irreversible hydrocolloid has a setting time of how many minutes? A) 7- 8 B) 1- 2 C) 5- 6 D) 3- 4 B) 1- 2 The water-to-powder ratio used when mixing type III dental stone should be A) 0.30 (30:100) B) 0.50 (50:100) C) 0.23 (23:100) D) 0.60 (60:100) A) 0.30 (30:100) Nitrous oxide/oxygen analgesic is CONTRAINDICATED for patients with A) chronic pulmonary disease B) metabolic disorder C) cardiovascular disease D) blood disorder A) chronic pulmonary disease

Due to its blood-thinning properties, aspirin use is CONTRAINDICATED for patients diagnosed with A) arthritis B) heart disease C) hemophilia D) diabetes C) hemophilia The depth of the base portion of the properly trimmed diagnostic model should be A) 2/3 the total depth of the model B) 3/4 the total depth of the model C) 1/3 the total depth of the model D) 1/2 the total depth of the model C) 1/3 the total depth of the model What is the minimum number of minutes that 100 percent oxygen should be administer to a patient following nitrous oxide/oxygen sedation? A) 5 B) 3 C) 9 D) 7 A) 5 Sublingual nitroglycerin is administered for which medical emergency? A) anaphylaxis B) asthma attack C) hyperglycemia D) angina attack D) angina attack When seating a patient in the dental treatment room, the patient's personal items should be placed? A) at the left side of the dental chair within reach B) in the patient's lap under a protective apron C) in the static zone behind the patient D) in a safe place away from the procedure D) in a safe place away from the procedure When assisting in the electronic pulp vitality test, which tooth is measured first? A) maxillary first molar B) mandibular first molar

C) control tooth D) suspect tooth C) control tooth The tank colors for nitrous and oxygen are A) black and red B) blue and green C) green and black D) red and green B) blue and green The correct sequence of items for a Class III composite restoration tray, based upon order of use is A) bonding agent, Mylar matrix strip, shade guide, abrasive strips B) shade guide, bonding agent, abrasive strips, mylar matrix strip C) abrasive strips, bonding agent, Mylar matrix strip, shade guide D) shade guide, Mylar matrix strip, bonding agent, abrasive strips D) shade guide, Mylar matrix strip, bonding agent, abrasive strips If an employee has an exposure incident, documentation of the incident needs to be maintained in the employee record for the length of employment plus A) one year B) 30 years C) five years D) 15 years B) 30 years Which is the following consent types is obtained if patient needs an oral surgical procedure? A) HIPAA B) implied C) legal D) informed D) informed Which of the following should be included when using a matrix during a Class III restoration? A) floss threader B) widgit C) Mylar strip D) wedge D) wedge What should the dental assistant do when attaching the high volume evaluator (HVE) tip to the suction unit handle?

A) push the tip through a protective barrier placed to cover the handle B) activate the saliva ejector first to release pressure to the HVE hose C) rinse the HVE tip first with warm water to assure a tight seal D) use a modified pen grasp to avoid crushing or bending the tip A) push the tip through a protective barrier placed to cover the handle Use of lidocaine HCI 1:50,000 local anesthesia should be avoided on patients with what medical condition? A) recent joint replacement B) uncontrolled diabetes mellitus C) recent myocardial infarction D) uncontrolled hypothyroidism C) recent myocardial infarction Angular Cheilitis is likely to be an oral manifestation of which condition? A) diabetes B) anemia C) asthma D) epilepsy B) anemia Which of the following anatomical structures supports the tooth's position in the maxilla or mandible? A) alveolar bone B) apical foramen C) dentin D) cementum A) alveolar bone An intermediate local anesthesia administered to a patient will have a duration time of A) 30-45 minutes B) 60-90 minutes C) 120-240 minutes D) 245-310 minutes C) 120-240 minutes Over the counter fluoride rinses are DISCOURAGED for which of the following g age groups? A) 6- 12 B) 20- 25 C) 13- 19 D) 0- 5 D) 0- 5

To control swelling the first 24 hours after a surgical procedure, the patient should be advised to A) apply moist heat, alternating with ice packs every 20 minutes B) apply ice packs, alternating 20 minutes on and 20 minutes off C) bite on gauze with firm pressure for 2 hours D) rinse with warm salt water every 2 hours B) apply ice packs, alternating 20 minutes on and 20 minutes off Which of the following polishing abrasives would be the best choice for cleaning a heavily stained tooth? A) chalk B) zirconium silicate C) silex D) fluoride paste C) silex Which of the following is used for the treatment of alveolitis? A) calcium hydroxide B) intermediate restorative material C) periodontal dressing D) iodoform gauze D) iodoform gauze When properly positioned on the stool, the assistant sits A) 14-16 inches from the patient's oral cavity B) 4-6 inches above the operator C) with feet resting flat on the floor D) with knees facing the patient's head rest B) 4-6 inches above the operator Which of the following would be a nonexpendable item in the dental office inventory? A) anesthetic B) dental cement C) dental chair D) curing light D) curing light What action should be taken for a pregnant patient experiencing orthostatic (postural) hypotension? A) administer sublingual nitroglycerin B) turn her on her left side C) place her in a supine position D) prepare an ammonia inhalant

B) turn her on her left side Which nerve must be blocked with local anesthesia to numb the posterior palatal region? A) intraorbital B) incisive C) greater palatine D) nasopalatine C) greater palatine Adjustment of which of the following is a contraindication for use of a laboratory bur? A) custom trays B) composites C) partials D) dentures B) composites Which elastomeric impression material may be used when accuracy and dimensional stability are required? A) agar B) polysulfide C) alginate D) polyvinyl siloxane D) polyvinyl siloxane To help relax a patient appearing tense in the dental chair, the dental assistant should encourage the patient to A) squeeze the dental arm chair, rest B) close his or her eyes C) listen carefully D) breathe slowly and deeply D) breathe slowly and deeply Which of the following conditions is likely to occur as a result of vigorous brushing? A) enamel abrasion B) mottled enamel C) periodontal disease D) gingivitis A) enamel abrasion Prior to placing a dental dam on a patient, the provider should A) administer nitrous oxide/oxygen sedation B) review the medical history

C) obtain the fee for the procedure D) provide cleaning instructions B) review the medical history Which of the following is used to describe the jaws closed in a position that produces maximal stable contact between the maxillary and mandibular teeth? A) end to end position B) centric occlusion C) functional relationship D) bite registration B) centric occlusion How long should topical fluoride gel remain in contact with the teeth for optimal effectiveness? A) 4 minutes B) 7 minutes C) 6 minutes D) 5 minutes A) 4 minutes When transferring instruments with hinges such as surgical forceps and scissors, the assistant should A) grasp the handles and pass the hinges to the dentist's palm B) grasp the hinges and direct the handle to the dentist's palm C) position the instrument on the bib for the dentist to pick up unassisted D) grasp the distal ends of the handles and lay handles on the dentist's palm B) grasp the hinges and direct the handle to the dentist's palm The process of mixing cements to a primary consistency is known as A) dissipating B) lining C) wetting D) luting D) luting Which of the following would be recommended by the dentist if a patient is experiencing a canker sore? A) sublingual nitroglycerin B) topical anesthetic C) prophylactic antibiotics D) antifungal agents B) topical anesthetic

During the removal of cotton rolls, the air/water syringe is used to A) prolong cotton roll use B) prolong the life of the restoration C) prevent mucosal tear D) prevent gingival damage C) prevent mucosal tear The dental team can help meet patient's needs by A) encoring questions B) delaying the appointment C) making humorous remarks D) disregarding complaints A) encouraging questions Which of the following types of consent would be the most beneficial defense in a lawsuit claiming suffering? A) verbal B) implied C) restrictive D) written D) written If the dentist identifies moderate mobility of a tooth during a periodontal exam, the dental assistant will record what score in the patient's chart? A) 3 B) 1 C) 0 D) 2 D) 2 The Occupational Safety and Health Administration (OSHA) guidelines do NOT include the A) Hazard Communications Standard B) Ionizing Radiation Standard C) Infection Control Standard D) Bloodborne Pathogens Standard C) Infection Control Standard If a back-order notice is received, it means the A) supply will automatically be shipped when available B) supply must be paid for prior to shipment C) order should be resubmitted at a later date D) order should be placed with a different company

A) supply will automatically be shipped when available When retrieving an instrument from the dentist, the instrument should be placed A) in the transfer zone on top of the patient's bib B) in a container of holding solution placed near the tray C) back on the tray setup in its proper order of use D) back on the tray setup behind any unused instruments C) back on the tray setup in its proper order of use When portable equipment such as curing lights and nitrous oxide machines are used, in which zone of operation are they placed? A) transfer zone B) assistant's zone C) static zone D) operator zone C) static zone Consent for dental treatment of minors should be optioned from the A) office manager B) legal guardian C) school record D) dentist B) legal guardian Which of the following materials can change from the gel state to the sol state and back to the gel state? A) agar hydrocolloid B) alginate C) polyether D) polyvinyl siloxane A) agar hydrocolloid In performing suture removal, care should be take to prevent A) retention of resorbable sutures B) using antiseptic on the tissue C) pulling the knot through the tissue C) pulling the knot through the tissue The primary cause of failure of pit and fissure etched surface is A) excess polishing B) moisture contamination C) use of cotton rolls D) applied sealant

B) moisture contamination Which of the following describes the best way to remain approachable to an anxious patient? A) encourage questions B) work slowly C) encourage quiet D) work quickly A) encourage questions When picking up an instrument to pass using a single-handed technique, the dental assistant grasps the A) instrument in the most comfortable spot B) middle of the instrument C) working end of the instrument D) instrument on the end opposite the working end D) instrument on the end opposite the working end The endodontic instrument used to remove pulp tissue from the root canal is called a A) hedstrom file B) broach C) reamer D) lentulo spiral B) broach Which of the following oral diseases may be transmitted with or without the presence of active lesions? A) herpes simplex B) aphthous ulcers C) lichen planus D) hairy leukoplakia A) herpes simplex When providing patient education to the hearing-impaired patient, the communicator should A) provide written materials and avoid speaking B) make eye contact and speak slowly C) consult the dentist before speaking D) show pictures and speak loudly B) make eye contact and speak slowly The numbers used in the universal tooth numbering system for charting teeth in the mandibular left quadrant are A) 9- 16 B) 25- 32

C) 17- 24

D) 1- 8

C) 17- 24

When using the universal tooth numbering system, the maxillary eight central incisor is tooth number A) 21 B) 11 C) 8 D) 18 C) 8 What color of symbols should be used when charting treatment that needs to be completed in the patient's clinical record? A) black B) blue C) green D) red D) red A patient with what medical condition may benefit from prednisone and diazepam to control muscle spasms during dental treatment? A) diabetes mellitus B) cerebrovascular accident C) angina pectoris D) multiple sclerosis D) multiple sclerosis Leukoplakia is likely to be a condition of which of the following patient habits? A) oral piercing B) over-brushing C) alcohol use D) tobacco use D) tobacco use To prevent the dental dam from slipping, when applying a dental dam the dental assistant should attach a ligature to the A) clamp B) tooth C) frame D) forceps A) clamp

Mouthwashes and sprays that promote salivary flow are recommended for patients who are experiencing A) graphic tongue B) xerostomia C) alveolitis D) candidiasis B) xerostomia Which of the following brushes is recommended for the maintenance of dental implants? A) denture B) orthodontic C) interproximal D) hard-bristled C) interproximal At the time of primary teeth exfoliation, osteoclasts first cause resorption of the A) enamel B) dentin C) root D) pulp C) root The role of the dental assistant with patients should include A) making the patient feel comfortable B) referring patient questions to business office staff C) diagnosing a patient medical emergency D) prescribing a sedative to the patient A) making the patient feel comfortable Wet (or moist) bonding is a technique used to protect which part of the tooth? A) cementum B) enamel C) dentin D) cervix C) dentin The BEST way to maintain the dental equipment used in the treatment room is to A) follow the manufacturer's recommendation B) maintain a detailed service record C) perform weekly maintenance D) purchase a service contract A) follow the manufacturer's recommendation

Which type of oral infection presents as a smooth red lesion that typically follows the use of an antibiotic? A) pseudomembranous candidiasis B) hyperplastic candidiasis C) infantile candidiasis D) atrophic candidiasis D) atrophic candidiasis Which of the following materials is placed as a pulp cap when it is suspected that a small exposure of the pulp has occurred? A) zinc phosphate B) zinc oxide-eugenol C) glass ionomer D) calcium hydroxide D) calcium hydroxide Teeth that replace the primary dentition are called A) baby B) succedaneous C) deciduous D) clinical B) succedaneous When assisting a left-handed dentist, the dental assistant should hold the evaluator tip with A) the right hand B) both hands simultaneously C) the left hand C) the left hand Which of the following behavior management techniques are effective in providing dental care to a 7 year old patient? A) treat the child as an adult B) tell, show, then do C) avoid allowing procedure participation D) assure the child the procedure will not hurt B) tell, show, then do When obtaining a patient's blood pressure, which of the following is used to control the blood flow in the artery? A) stethoscope B) inflatable rubber cuff

C) oxygen nasal cannula D) pulse oximeter B) inflatable rubber cuff The hemisection procedure is used to remove A) transverse pulpitis B) an open apex in a primary tooth C) a necrotic root canal apex D) one root and overlying crown D) one root and overlying crown The use of dry angles during moisture control activities controls saliva flow from A) Wharton's duct B) the ducts of Rivinus C) the ducts of bartholin D) stenson's duct D) stenson's duct Which of the following instruments is used for tactile discovery of decay? A) periodontal probe B) cotton pliers C) mouth mirror D) explorer D) explorer What sugar substitute is in chewing gum that may be recommended because it has shown to prevent caries? A) xylitol B) saccharine C) aspartame D) mannitol A) xylitol Which of the following dental cements is chosen based upon its sedative effects on the pulp? A) zinc oxide-eugenol B) resin-based C) glass ionomer D) zinc phosphate A) zinc oxide-eugenol Which of the following materials would allow the longest working time when constructing a custom impression tray? A) thermoplastic acrylic resin

B) vacuum-formed acrylic resin C) self-cured acrylic resin D) light-cured acrylic resin D) light-cured acrylic resin When selecting pastes for the coronal polishing procedure it is most important to consider the A) taste B) brand C) grit D) color C) grit Which extraction forceps number would be found on a tray set up for the extraction of tooth number 25? A) 151 B) 15 C) 150 D) 210 A) 151 To prevent alveolitis after a tooth extraction, the patient should be instructed to A) place ice packs on the face B) take aspirin for the first 24 hours C) rinse vigorously the first 24 hours D) avoid drinking through a straw D) avoid drinking through a straw Which eating disorder may be suspected for a patient with erosion on the lingual surfaces of the teeth? A) female athlete triad B) chronic dieting syndrome C) bulimia D) anorexia nervosa C) bulimia When assisting in the maxillary posterior regions, the dental assistant should secure the cotton roll A) lingual to the first molar B) next to the first premolar C) vertically against the cheek D) in the muccobuccal fold In the muccobuccal fold

The working time for fast-set alginate impression material is A) 30-50 seconds B) 5-6 minutes C) 1-2 minutes D) 3-4 minutes C) 1-2 minutes Clinical considerations for patients with bronchial asthma should include A) paying attention to the vinyl use B) having ammonia inhalant available C) avoiding the use of sedatives D) shorter appointments to reduce stress D) shorter appointments to reduce stress Which of the following would be included in the setup for the removal of an impacted third molar? A) spoon excavator B) dental dam clamp forceps C) retraction cord D) high-speed handpiece D) high-speed handpiece Proper ergonomic positioning when working from the operator's location includes A) keeping the thighs angled downward at a 60 degree angle to the floor B) keeping the feet arches behind the hips C) positioning the elbows close to the body D) holding the elbows at a 45 degree angle from the shoulders C) positioning the elbows close to the body In the procedure to construct a custom acrylic tray for the edentulous impression, the purpose of the wax space is to A) compensate for shrinkage of the gypsum model B) allow room for the impression material C) prevent the acrylic from sticking to the gypsum D) smooth the alveolar areas of the tray B) allow room for the impression material A patient with which of the following medical conditions may benefit from prophylactic sublingual nitroglycerin? A) cardiovascular disorders B) pulmonary disorders C) endocrine disorders D) neuromuscular disorders