DHS Mock Board

What would produce a darker image?

increase mA

When should a patient with chronic renal failure be scheduled?

the day after dialysis

What compound is used to fluoridate domestic water systems?

sodium silicofluoride

After developing an FMX, all of the films were back. What was the cause for this?

silver halide crystals were not energized

Identify the vitamin that promotes the synthesis of collagen.

vitamin C

Which agency is concerned with Bloodborne Pathogen Standards?

OSHA

To avoid false readings while probing, correct angulation is essential. If the probe is inserted at an angle that is insufficient, the reading will be greater than the actual pocket depth. TRUE/FALSE

true, false

According to the Code of Ethics for the Dental Hygienist, a patient's right to informed consent prior to treatment is _________.

autonomy

How often does the HIPAA form need to be signed?

once

Which lesions are seen on a patient wearing an ill-fitting metal removable denture?

papillary hypoplasia

The oral physiotherapy aid most suited for removal of loosely adherent plaque is a _____________.

oral irrigator

Identify the most common supernumerary tooth.

mesiodens

PPE consists of gloves, masks, eye wear, and protect clothing. The equipment is designed to protect the patient. TRUE/FALSE

true, false

The purpose of a professional code of ethics is to achieve high levels of ___________, _____________, and ____________.

decision making, ethical consciousness, and practice by members of the profession.

The recommended uninterrupted immersion time to sterilize instruments through liquid chemical solution is ______.

10 hours

Providing services to protect all patient and to minimize harm to them and others involved in treatment is an example of __________.

non-maleficence

A healthcare provider must obtain informed consent before an invasive procedure. This consent may be oral or written. TRUE/FALSE.

both statements are true

Using an ill-fitted BP cuff can result in an invalid reading. An adult sized cuff on a child can produce an inaccurate lower reading. TRUE/FALSE.

both statements are true

One of the procedures in private practice is diagnosis. What is the parallel procedure in community health practice?

data analysis

Vitamin D assists with the absorption of ___________.

calcium

HIPAA of 1996 protects the privacy and security of patient information. HIPAA includes privacy standards, patient's rights, and occupational safety and health. TRUE/FALSE.

true, false

Which fat-soluble vitamin prevents night blindness?

vitamin A

Patients cannot be denied access to their records. They may, however, be charged a reasonable fee for copying their records. TRUE/FALSE.

both statements are true

An example of negligence is

a) discussing another patient's condition

b) touching the patient in an improper manner

c) practicing without a valid license

d) damaging the patient's tooth and not telling him/her

damaging the patient's tooth and not telling him/her

Identify the agency concerned with patient confidentiality.

HIPAA

Which vitamin assists with the synthesis of tryptophan?

Niacin

Which anterior tooth is most likely to exhibit a bifurcated root?

mandibular canine

Which physiotherapy aid is best used for Class IV furcations?

interdental brush

If a patient presents with severe periodontal disease, but tells the hygienist she scheduled the appointment for bleaching, what is the first thing the hygienist should address?

teeth whitening

What is the general principle concerning the standards of right and wrong?

ethics

Manual toothbrushing is more effective in removing plaque than power-assisted tooth brushes because it has greater access in reaching all tooth structures.

neither the statement nor the reason is correct

Inflammation can be described by all of the following except:

a) swelling

b) erythemia (redness)

c) parathesia (tingling)

d) hyperthemia (heat)

C

The most common medical emergency in a dental office is syncope. The first step in managing the patient is to administer oxygen. TRUE/FALSE

true, false

All of the following are elements of informed consent except one:

a) alternatives to procedure

b) nature and need of procedure

c) presented in an understandable language

d) prognosis if procedure is not performed

e) unilateral dismissal of a patient with ample and proper notice

E

Which act/law protects health care professionals from liability while providing emergency care to an accident victim?

Good Samaritan Law

All of the following are recommended for a patient who has ingested more than 5 mg/kg of fluoride except one.

a) induce vomiting

b) administer calcium

c) seek medical treatment

d) immediately admit to hospital

D

Which ADHA Code of Ethics principles addresses truth, integrity, and honesty?

veracity

Which of the following tissues are radioresistant?

a) lymphoid

b) reproductive

c) Kleenex

d) optic lens

e) immature bone tissue

optic lens tissue

Mouth rinses are available for the delivery of cosmetic and therapeutic agents. If a mouth rinse if therapeutic, it is bacteriocidal. TRUE/FALSE.

true, false

Children are more sensitive to radiation that adults because children have increased cellular mitosis associated with growth. TRUE/FALSE.

both the statement and reason are correct and related.

Excessive exposure to radiation initially presents as ____________.

erythema

On a panoramic radiograph, identify the horizontal radiopacity located superior to the maxillary teeth.

hard palate

Which class of furcation exhibits moderate bones loss with no evidence of recession where the instrument can enter the furca, but cannot pass through the roots.

II

The office has changed from E to D speed film. What modifications should be made to the exposure time?

a) doubled

b) decreased by 1/2

c) decreased by 3/4

d) remain the same

doubled

Although BOP indicates periodontal involvement, bleeding may not be evident in smokers because of the effects smoking has on the microvascular system. TRUE/FALSE

both the statement and the reason are correct and related

Which immunoglobin is most likely to be found in saliva?

IgA

A positive Mantoux Skin Test is an example of what type of immune hypersensitivity reaction?

Type IV delayed

The half life of a drug relates most closely to

a) drug efficacy

b) drug potency

c) therapeutic range

d) duration of drug's effect

D

At which stage of periodontal lesion development do clinical signs of gingivitis appear?

Stage II early lesion

From the following list, select the cell wall characteristic NOT associated with gram negative bacteria.

a) two layers

b) porin channel

c) high lipid content

d) lysozyme sensitivity

A

All of the following bacteria are classified as faculative anaerobes EXCEPT

a) prevotella

b) actinomyces

c) staphylococcus

d) mycobacterium

A

During which growth phase are bacteria MOST affected by the physical and chemical actions of antimicrobial agents?

exponential phase

Which of the following is associated with insulin shock?

a) dry skin

b) slow onset

c) bradycardia

d) diaphoresis

e) fruity odor of the breath

D

Oral medications with a high first pass effect must:

a) utilize a high dose

b) be taken with food

c) be taken early in the morning

d) be administered several times daily in low dose formulation

A

Ameloblasts are derived from which embryonic strucure?

IEE

Examples of thyroid disorder include Grave's disease and Cushing's syndrome. Symptoms of Grave's disease include delayed tooth eruption, dry skin, and intolerance to heat. TRUE/FALSE

both statements are false

All of the following are treatment modalities for a patient with emphysema except:

a) short appointments

b) stress reduction protocol

c) positioning chair more upright

d) nitrous oxide sedation

D

If a patient makes "crowing" sounds during inspiration, she is more than likely experiencing ________.

a) hyperventillation

b) complete airway obstruction

c) partial airway obstruction with good airflow

d) partial airway obstruction with poor airflow

D

The type of subgingival bacteria most likely to be found at the base of a 7mm pocket is __________.

a) rod

b) aerobic

c) gram positive

d) mutans streptococci

A

What phase of mitosis signals the end of cell division?

telophase

Hairy tongue most often involves elongation of filiform papilla; hairy tongue is usually located on the ventral surface. TRUE/FALSE

true, false

All of the following are common side effects seen with radiation therapy for the treatment of oral cancer except one.

a) erythema

b) xerostomia

c) cervical caries

d) papillary hyperplasia

D

Characteristic of a benign neoplasm include all of the following except one:

a) slow growth

b) well circumscribed

c) infiltration of adjacent tissues

d) displaced adjacent tissues

C

Candida albicans is classified as an _________ ________.

opportunistic fungus

The Hep B vaccine confers immunity to the recipient by generating

a) hepatitis B core antigen

b) hepatitis B surface antigen

c) anti-hepatitis B core antigen

d) anti-hepatitis B surface antigen

D

The primary cell involved in cell mediated immunity is __________.

T-cell

Trismus, caused by local anesthesia denotes:

a) bruise

b) an infection

c) prolonged tetany

d) total loss of sensation

C

If a spinal cord injury occurs at C7 what functioning ability would the patient exhibit?

a) needs a ventilator

b) sits and eats with devices

c) personal care with devices

d) limited walking with braces

e) needs wheelchair transfers

C

An advantage of intensifying screens in extraoral radiographs is to reduce patient exposure time. The use of these screens increases the amount of radiation the patient receives. TRUE/FALSE

true, false

Which of the following has the greatest effect in causing an increase in the caries process?

a) consistency of food

b) in-between meal snacking

c) amount of sugar added to food

d) frequency of intake of fermentable carbohydrates

D

When does the latent period of radiation occur?

a) when x-ray exposure occurs

b) within 24 hours of exposure

c) time between exposure and first damage observed

C

Which cranial nerve transmits pain sensation from the PDL?

V

Which salivary gland contributes the most volume of saliva?

submandibular

All of the following are muscles of facial expression except:

a) mentalis

b) platysma

c) buccinator

d) temporalis

D

A patient states he is experiencing severe and crushing chest pain. He breaks out into a cold sweat and his skin becomes ashen. He is most likely experiencing _____________.

a) stable angina

b) variant angina

c) unstable angina

d) myocardial infarction

myocardial infarction

Cleft palate usually develops during which weeks of fetal development?

weeks six through eleven

Which of the following nodes receives lymphatic drainage from the maxillary teeth?

a) buccal

b) submental

c) infraorbital

d) submandibular

submandibular

Which of the following hemodynamic changes occurs first in periodontal disease progression?

a) hyperemia

b) margination

c) pavementing

d) vasodilation

e) diadpidesis

D

Which of the following is not associated with cigarette smoking?

a) increased pocket depth

b) increased edema

c) alterations in the microvascular system

d) decreased incidence of aphthous ulcers

B

Which of the following gives the correct order of the Learning Ladder from lowest to highest?

a) unawareness, self-interest, awareness, involvement, habit, action

b) unawareness, awareness, self-interest, action, involvement, habit

c) unawareness, awareness, self-interest, involvement, action, habit

d) habit, action, involvement, self-interest, awareness, unawareness

C

A bitewing film is properly exposed with an 8" PID using an exposure setting of 1 second. What exposure time, in seconds, would be needed if a 16" PID was used?

4

Increasing the kVp will result in _________.

long scale of contrast

Class II mobility involves

> 1-2mm displacement

Which variable affects radiographic image contrast?

kVp

A five year old child presents in the office with a high caries rate. Upon further investigation, it is determined she lives in an area where the fluoride concentration in the community water is .5ppm. Which daily supplemental fluoride dosage should be recommended?

a) .5

b) .25

c) no supplemental dose is recommended

.25mg

The maximum amount of radiation an occupationally exposed person may receive in mSv in one month is:

a) 1 mSv

b) 2 mSv

c) 4 mSv

d) 8 mSv

4 mSv

The loss of a solvent by a solute is

a) adhesion

b) gelation

c) syneresis

d) imbibition

syneresis

If a patient experiences an anaphylactic reaction in the dental office, the drug to administer is ________.

epinephrine

Fluorides act as a barrier against acid dissolution of the tooth structure. Critical pH levels range between 4.5 to 5.5 for coronal caries and 6.0 to 6.7 for root caries. TRUE/FALSE

both statements are true

Which of the following levels is the highest in Maslow's Hierarchy of Needs?

a) safety (security)

b) ego (self-esteem)

c) love (belonging)

d) self-actualization

e) physical (physiologic needs)

self-actualization

Synthroid is a medication used to treat

hypothyroidism

Percolation at the margin of a permanent restoration is due to

a) tensile strength

b) improper finishing of the cavosurface margin

c) moisture contamination of the restorative material

d) a difference between the coefficients of thermal expansion of tooth tissue and the restorative material

D

Home us of .45% stannous fluoride can be recommended for all of the following except:

a) bulimics

b) periodontal patients

c) orthodontic patients

d) patients with dentin hypersensitivity

A

Where does the ophthalmic branch of the trigeminal nerve exit the cranial cavity?

a) foramen ovale

b) foramen rotundum

c) mandibular foramen

d) superior orbital fissure

superior orbital fissure

When placed outside of a cell, what type of chemical solution will not cause osmosis?

a) isotonic

b) hypotonic

c) hypertonic

d) osmotonic

isotonic

The part of the temporal bone housing organs of hearing is called

a) petrous

b) mastoid

c) parietal

d) squamous

petrous

Examining structures on opposite sides of the face using both hands simultaneously is

bilateral palpation

The most common location for recurrent oral herpes is the

lips

Soap and water are recommended for cleaning a partial denture because bleach will cause corrosion of the appliance. TRUE/FALSE

both the statement and the reason are correct and related

When using zinc phosphate as a base, what is its most important physical characteristic?

a) pH

b) solubility

c) adhesive quality

d) compressive strength

compressive strength