DARBY FINAL EXAM QUESTIONS AND
100% CORRECT ANSWERS
Which of the following is an incorrect step in fabricating a mouth protector?
A.Making an alginate impression of the arch
B.Pouring high-strength stone cast
C.Cooling the thermoplastic material in chilled water
D.Trimming the mouth protectorWhich of the following is an incorrect step in fabricating
a mouth protector?
C.Cooling the thermoplastic material in chilled water
A dental hygienist, new to the community, learns from friends and clients of the popularity
of sports teams for children from age 3 through 12. Noticing the apparent lack of
preventive measures to protect against oral and head injuries, she becomes particularly
concerned about the child and adolescent population within this community. As a first step
toward developing a community-based plan to prevent sports injuries for all participants
in this target group, the dental hygienist consults with the high school athletic coach.
While researching community resources she learns of a school-based nutrition program,
but also discovers that no funding for oral health exists.In an effort to collect data about
sports-related injuries that result in emergency department visits, the dental hygienist
conducted a telephone survey of three community hospitals and five walk-in emergency
clinics. The purpose of this survey was to determine the number of sports-related injuries
to children and adolescents ages 18 and younger who obtained emergency care during the
past 3-month period. Which of the following terms BEST describes the data collected?
A.Incidence
B.Prevalence
C.Count
D.Proportion
A.Incidence
,While explaining the professional responsibility of performing extraoral and intraoral
examinations, your patient asks several questions about structures you will be assessing.
Each of the following salivary glands is palpated during both the extraoral intraoral
examinations, EXCEPT one. Which one is the EXCEPTION?
A.Cervical
B.Parotid
C.Sublingual
D.Submandibular
A.Cervical
The cervical lymph node chain is composed of the superficial, deep, and posterior lymphatic
nodes. These lymph nodes are not salivary glands. The parotid, sublingual, and submandibular
salivary glands should be carefully palpated during the extraoral as well as the intraoral
examination.
Prior to performing periodontal procedures, you consult your periodontal textbook and
learn that the causative agents related to her condition are MOST likely....
A.Prevotella intermedia, spirochetes, and fusiform bacteria.
B.Porphyromonas, spirochetes and fusiform bacteria.
C.Simonsiella and spirochetes.
D.Treponema and spirochetes.
A.Prevotella intermedia, spirochetes, and fusiform bacteria.
Which of the following are early bacterial colonizers of the tooth surfaces?
A.Gram-positive rods
B.Gram-negative cocci
C.Gram-positive cocci
D.Filamentous bacteria
C.Gram-positive cocci
A client who reports taking isoniazid, rifampin, and pyrazinamide is MOST likely being
treated for which of the following conditions?
A.Epilepsy
,B.Anaphylaxis
C.Tuberculosis
D.Peptic ulcers
C.Tuberculosis
A prescription for daily use of neutral 1.1% NaF fluoride gel should be given to Mrs.
Hernandez to help remineralize early lesions.
This fluoride gel will also help prevent new carious lesions.
A.Both statements are TRUE.
B.Both statements are FALSE.
C.The first statement is TRUE, the second is FALSE.
D.The first statement is FALSE, the second is TRUE.
A.Both statements are TRUE.
Which property of CAD/CAM restorations is most significant to plaque biofilm
accumulation?
A.Thermal expansion
B.Esthetics
C.Resistance
D.Fatigue
C.Resistance
The physical property of resistance applies to numerous aspects of CAD/CAM restorations. They
have good resistance to plaque biofilm adsorption or retention. Other beneficial properties of
resistance possessed by CAD/CAM restorations include resistance to toothbrush abrasion and
wear resistance. Another beneficial property of CAD/CAM restorations is that they have limited
fatigue resistance (prevents iniatition and progression of cracks). Thermal expansion applies to
the ability of a practitioner to achieve a well-matched CAD/CAM restoration. Likewise, the
physical property of esthetics applies to the ability to achieve good shade matching. CAD/CAM
restorations have a limited degree of fatigue resistance caused by their brittleness.
During acidulated phosphate fluoride (APF) therapy, a lubricant should be used to protect
the surfaces of all of the following restorations EXCEPT one. Which one is the
, EXCEPTION?
A.Porcelain veneers
B.CAD/CAM ceramic
C.Hybrid composite
D.Amalgam
D.Amalgam
While dental amalgam is not easily etched, dissolved, or otherwise altered by acids in APF, this
is not true of many tooth colored restorative materials. Acidulated phosphate fluoride (APF) can
etch porcelain veneers as well as the inlay cement used with CAD/CAM ceramic restorations.
Hybrid composite fillers can be superficially dissolved by APF gel and foam treatments.
A 49-year-old white female client reports intermittent sensitivity in her right mandibular
first molar. The tooth has no restoration, and the vitalometer test results are positive
(indicating a nonvital pulp) for pathology. A current radiograph shows a radiopaque area
at the apex of the distal root of this tooth. This condition has been diagnosed as condensing
osteitis. Which of the following is MOST likely responsible for this condition?
A.Occlusal trauma
B.Odontoma
C.Periapical cemento-osseous dysplasia
D.Periapical abcess
A.Occlusal trauma
Condensing osteitis, or root resorption, is a factor in occlusal trauma that appears
radiographically radiopaque and is associated with endo-periapical lesions. Also indicative of
occlusal trauma as a cause for condensing osteitis, her exam results were positive for pathology
and radiographically appear radiopaque. This pathology is not an odontoma, which is an
odontogenic tumor composed of tooth structures, enamel, dentin, and pulp. While an odontoma
is radiopaque, as is condensing osteitis, an odontoma is surrounded by a radiolucent halo.
Neither is this lesion a periapical cemento-ossdeous dysplasia (cementoma), a condition that is
associated with vital teeth that are asymptomatic. Cementoma most frequently occurs in the
mandibular anterior region and occurs in middle aged Africa American women 70% of the time.
100% CORRECT ANSWERS
Which of the following is an incorrect step in fabricating a mouth protector?
A.Making an alginate impression of the arch
B.Pouring high-strength stone cast
C.Cooling the thermoplastic material in chilled water
D.Trimming the mouth protectorWhich of the following is an incorrect step in fabricating
a mouth protector?
C.Cooling the thermoplastic material in chilled water
A dental hygienist, new to the community, learns from friends and clients of the popularity
of sports teams for children from age 3 through 12. Noticing the apparent lack of
preventive measures to protect against oral and head injuries, she becomes particularly
concerned about the child and adolescent population within this community. As a first step
toward developing a community-based plan to prevent sports injuries for all participants
in this target group, the dental hygienist consults with the high school athletic coach.
While researching community resources she learns of a school-based nutrition program,
but also discovers that no funding for oral health exists.In an effort to collect data about
sports-related injuries that result in emergency department visits, the dental hygienist
conducted a telephone survey of three community hospitals and five walk-in emergency
clinics. The purpose of this survey was to determine the number of sports-related injuries
to children and adolescents ages 18 and younger who obtained emergency care during the
past 3-month period. Which of the following terms BEST describes the data collected?
A.Incidence
B.Prevalence
C.Count
D.Proportion
A.Incidence
,While explaining the professional responsibility of performing extraoral and intraoral
examinations, your patient asks several questions about structures you will be assessing.
Each of the following salivary glands is palpated during both the extraoral intraoral
examinations, EXCEPT one. Which one is the EXCEPTION?
A.Cervical
B.Parotid
C.Sublingual
D.Submandibular
A.Cervical
The cervical lymph node chain is composed of the superficial, deep, and posterior lymphatic
nodes. These lymph nodes are not salivary glands. The parotid, sublingual, and submandibular
salivary glands should be carefully palpated during the extraoral as well as the intraoral
examination.
Prior to performing periodontal procedures, you consult your periodontal textbook and
learn that the causative agents related to her condition are MOST likely....
A.Prevotella intermedia, spirochetes, and fusiform bacteria.
B.Porphyromonas, spirochetes and fusiform bacteria.
C.Simonsiella and spirochetes.
D.Treponema and spirochetes.
A.Prevotella intermedia, spirochetes, and fusiform bacteria.
Which of the following are early bacterial colonizers of the tooth surfaces?
A.Gram-positive rods
B.Gram-negative cocci
C.Gram-positive cocci
D.Filamentous bacteria
C.Gram-positive cocci
A client who reports taking isoniazid, rifampin, and pyrazinamide is MOST likely being
treated for which of the following conditions?
A.Epilepsy
,B.Anaphylaxis
C.Tuberculosis
D.Peptic ulcers
C.Tuberculosis
A prescription for daily use of neutral 1.1% NaF fluoride gel should be given to Mrs.
Hernandez to help remineralize early lesions.
This fluoride gel will also help prevent new carious lesions.
A.Both statements are TRUE.
B.Both statements are FALSE.
C.The first statement is TRUE, the second is FALSE.
D.The first statement is FALSE, the second is TRUE.
A.Both statements are TRUE.
Which property of CAD/CAM restorations is most significant to plaque biofilm
accumulation?
A.Thermal expansion
B.Esthetics
C.Resistance
D.Fatigue
C.Resistance
The physical property of resistance applies to numerous aspects of CAD/CAM restorations. They
have good resistance to plaque biofilm adsorption or retention. Other beneficial properties of
resistance possessed by CAD/CAM restorations include resistance to toothbrush abrasion and
wear resistance. Another beneficial property of CAD/CAM restorations is that they have limited
fatigue resistance (prevents iniatition and progression of cracks). Thermal expansion applies to
the ability of a practitioner to achieve a well-matched CAD/CAM restoration. Likewise, the
physical property of esthetics applies to the ability to achieve good shade matching. CAD/CAM
restorations have a limited degree of fatigue resistance caused by their brittleness.
During acidulated phosphate fluoride (APF) therapy, a lubricant should be used to protect
the surfaces of all of the following restorations EXCEPT one. Which one is the
, EXCEPTION?
A.Porcelain veneers
B.CAD/CAM ceramic
C.Hybrid composite
D.Amalgam
D.Amalgam
While dental amalgam is not easily etched, dissolved, or otherwise altered by acids in APF, this
is not true of many tooth colored restorative materials. Acidulated phosphate fluoride (APF) can
etch porcelain veneers as well as the inlay cement used with CAD/CAM ceramic restorations.
Hybrid composite fillers can be superficially dissolved by APF gel and foam treatments.
A 49-year-old white female client reports intermittent sensitivity in her right mandibular
first molar. The tooth has no restoration, and the vitalometer test results are positive
(indicating a nonvital pulp) for pathology. A current radiograph shows a radiopaque area
at the apex of the distal root of this tooth. This condition has been diagnosed as condensing
osteitis. Which of the following is MOST likely responsible for this condition?
A.Occlusal trauma
B.Odontoma
C.Periapical cemento-osseous dysplasia
D.Periapical abcess
A.Occlusal trauma
Condensing osteitis, or root resorption, is a factor in occlusal trauma that appears
radiographically radiopaque and is associated with endo-periapical lesions. Also indicative of
occlusal trauma as a cause for condensing osteitis, her exam results were positive for pathology
and radiographically appear radiopaque. This pathology is not an odontoma, which is an
odontogenic tumor composed of tooth structures, enamel, dentin, and pulp. While an odontoma
is radiopaque, as is condensing osteitis, an odontoma is surrounded by a radiolucent halo.
Neither is this lesion a periapical cemento-ossdeous dysplasia (cementoma), a condition that is
associated with vital teeth that are asymptomatic. Cementoma most frequently occurs in the
mandibular anterior region and occurs in middle aged Africa American women 70% of the time.
