DARBY 2025 EXAM QUESTIONS
AND 100% CORRECT ANSWERS
A contraction in which the tone or tension within a muscle remains the same while the
length of the muscle changes is referred to as A.isotonic.
B.isometric.
C.stretch reflex.
D.syncytium.
A.isotonic
Isotonic contraction refers to contraction in which the tone or tension within a muscle remains
the same as the length of the muscle changes. Isotonic means 'same tension". Conversely, during
isometric a contraction the muscular length remains the same while muscle tension increases.
Isometric means "same length". Stretch reflex refers to the degree to which the load imposed on
a muscle influences the strength of skeletal contraction. Synctium refers to a continuous,
electrically coupled mass that is important for coordinating muscle contractions.
,All of the following would improve the visual appearance of the radiographic
image, EXCEPT one. Which one is the EXCEPTION? A.Large focal spot
B.Long focal spot to object distance
C.Short object to film distance
D.Parallel object and film relationship
A.Large focal spot
Which of the following will not relieve dentinal hypersensitivity in the cervical area of a
tooth?
A.Application of phosphoric acid
B.Acidulated phosphate fluoride (APF)
C.Sealant coverage of open tubules
D.Stimulation of secondary dentin
B.Acidulated phosphate fluoride (APF)
Which of the following describes a dental implant that is placed on the surface of the bone
beneath the periosteum?
A.Periosseous
B.Endosseous
C.Transosteal
D.Subperiosteal
D.Subperiosteal
,Which of the following nonsurgical periodontal interventions targets the host's response
to disease rather than the host's bacterial load as a way to reduce destructive collagenase
activity?
A.Systemic antibiotic therapy such as tetracycline or amoxicillin
B.Local chemotherapy such as 0.12% chlorhexidine mouthrinse
C.Systemic subantimicrobial-dose doxycycline
D.Meticulous oral hygiene
C.Systemic subantimicrobial-dose doxycycline
A form of systemic therapy, subantimicrobial-dose doxycycline (low dose) has been approved by
the FDA for treatment of periodontal disease. This subantimicrobial approach inhibits
periodontal disease progression by reducing destructive effects of chronic inflammation.
Subantimicrobial-dose doxycycline will reduce collagenase activity and hence work directly on
the host's response to inflammation. Used in this manner subantimicrobial-dose doxycycline is
considered a host-modulating drug where the host response is the target. Alternatively, systemic
antibiotics target the bacterial load that cause the disease. Local chemotherapeutic mouthrinses
like 0.12% chlorhexidine target supragingival plaque and gingivitis. To be advocated regardless
of the therapy proposed, oral hygiene measures attempt to control the bacterial load.
Your patient is taking Flagyl (metronidazole) and requires a mouthrinse to help control
dental plaque and gingivitis. Which of the following should be recommended? A.A
rinse with alcohol
B.The patient should choose one
C.A rinse without alcohol
D.Mouthrinse should not be recommended
, C.A rinse without alcohol
Patients taking metronidazole should not consume any products that contain alcohol, including
mouthrinses. The resulting interaction can cause severe headache, nausea, vomiting, and
increased blood pressure. Because many patients enjoy using a mouthrinse, the dental
hygienist should be prepared to recommend mouthrinses that do not contain alcohol.
Which of the following indices would BEST meet the goals of determining plaque
status and providing an opportunity for the women to observe plaque biofilm?
A.DMFS and PHP
B.OHI-S and PHP
C.DI-S and Pl
D.Pl and PHP
D.Pl and PHP
The penetrating beam produced at the target anode is referred to as
A.Primary radiation
B.Secondary radiation
C.Scatter radiation
D.Photoelectric effect
A.Primary radiation
An infection caused by an oncogenic virus that is classified as cytopathic, resistant,
and opportunistic is called a latent infection because in latent infections the causative
agent remains inactive in the body for a period of time and can be reactivated to
produce symptoms of the disease.
AND 100% CORRECT ANSWERS
A contraction in which the tone or tension within a muscle remains the same while the
length of the muscle changes is referred to as A.isotonic.
B.isometric.
C.stretch reflex.
D.syncytium.
A.isotonic
Isotonic contraction refers to contraction in which the tone or tension within a muscle remains
the same as the length of the muscle changes. Isotonic means 'same tension". Conversely, during
isometric a contraction the muscular length remains the same while muscle tension increases.
Isometric means "same length". Stretch reflex refers to the degree to which the load imposed on
a muscle influences the strength of skeletal contraction. Synctium refers to a continuous,
electrically coupled mass that is important for coordinating muscle contractions.
,All of the following would improve the visual appearance of the radiographic
image, EXCEPT one. Which one is the EXCEPTION? A.Large focal spot
B.Long focal spot to object distance
C.Short object to film distance
D.Parallel object and film relationship
A.Large focal spot
Which of the following will not relieve dentinal hypersensitivity in the cervical area of a
tooth?
A.Application of phosphoric acid
B.Acidulated phosphate fluoride (APF)
C.Sealant coverage of open tubules
D.Stimulation of secondary dentin
B.Acidulated phosphate fluoride (APF)
Which of the following describes a dental implant that is placed on the surface of the bone
beneath the periosteum?
A.Periosseous
B.Endosseous
C.Transosteal
D.Subperiosteal
D.Subperiosteal
,Which of the following nonsurgical periodontal interventions targets the host's response
to disease rather than the host's bacterial load as a way to reduce destructive collagenase
activity?
A.Systemic antibiotic therapy such as tetracycline or amoxicillin
B.Local chemotherapy such as 0.12% chlorhexidine mouthrinse
C.Systemic subantimicrobial-dose doxycycline
D.Meticulous oral hygiene
C.Systemic subantimicrobial-dose doxycycline
A form of systemic therapy, subantimicrobial-dose doxycycline (low dose) has been approved by
the FDA for treatment of periodontal disease. This subantimicrobial approach inhibits
periodontal disease progression by reducing destructive effects of chronic inflammation.
Subantimicrobial-dose doxycycline will reduce collagenase activity and hence work directly on
the host's response to inflammation. Used in this manner subantimicrobial-dose doxycycline is
considered a host-modulating drug where the host response is the target. Alternatively, systemic
antibiotics target the bacterial load that cause the disease. Local chemotherapeutic mouthrinses
like 0.12% chlorhexidine target supragingival plaque and gingivitis. To be advocated regardless
of the therapy proposed, oral hygiene measures attempt to control the bacterial load.
Your patient is taking Flagyl (metronidazole) and requires a mouthrinse to help control
dental plaque and gingivitis. Which of the following should be recommended? A.A
rinse with alcohol
B.The patient should choose one
C.A rinse without alcohol
D.Mouthrinse should not be recommended
, C.A rinse without alcohol
Patients taking metronidazole should not consume any products that contain alcohol, including
mouthrinses. The resulting interaction can cause severe headache, nausea, vomiting, and
increased blood pressure. Because many patients enjoy using a mouthrinse, the dental
hygienist should be prepared to recommend mouthrinses that do not contain alcohol.
Which of the following indices would BEST meet the goals of determining plaque
status and providing an opportunity for the women to observe plaque biofilm?
A.DMFS and PHP
B.OHI-S and PHP
C.DI-S and Pl
D.Pl and PHP
D.Pl and PHP
The penetrating beam produced at the target anode is referred to as
A.Primary radiation
B.Secondary radiation
C.Scatter radiation
D.Photoelectric effect
A.Primary radiation
An infection caused by an oncogenic virus that is classified as cytopathic, resistant,
and opportunistic is called a latent infection because in latent infections the causative
agent remains inactive in the body for a period of time and can be reactivated to
produce symptoms of the disease.
