2025 UPDATE|| OSCE DENTAL HYGIENE EXAM TEST
WITH CORRECT ANSWERS
Bass Method - ANSWER Most widely used method. Bristles are angled at a 45 degree
angel towards the gingiva.
Stillman's Method - ANSWER Bristles are positioned on the gums rather than into the
pockets and directed at a 45 degree angle.
Charter's Method - ANSWER Bristles are directed occlusally, away from the gingiva.
Useful for cleaning orthodontic brackets, prosthesis, and areas treated with surgeries.
Fone's Method - ANSWER Bristles are moved in large circular motion on the buccal and
lingual surfaces. Useful for children, those physically impaired, or adults who lack manual
dexterity.
Fluoride Varnish - ANSWER -Dries immediately upon contact with saliva.
-Does not require a professional prophylaxis before hand.
-Can eat and drink immediately after.
-Avoid brushing, rigorous rinsing, or hard foods for 3 to 4 hours.
-Easier and more effective method
Fluoride is recommended for patients who: - ANSWER -Have xerostomia
-High caries risk
,-Undergoing cancer therapy
-Orthodontics
,Fluoride Gel or Foam (office application) - ANSWER -Applied onto tray and placed in
patient's mouth usually for 4 minutes (Read manufactures label).
-Do not eat, drink, or smoke for 30 minutes.
-Most popular types are 1.23% APF and 2% Neutral sodium fluoride.
Stannous Fluoride - ANSWER -0.4% available for non-prescription use.
-1% neutral sodium fluoride gels available for prescription use.
-Can cause extrinsic staining (especially in patient's with inadequate plaque control).
Acidulated Phosphate Fluoride (APF) - ANSWER -Do NOT use of composites, porcelain,
or sealant materials as it causing pitting and roughening.
-Also avoid on root surfaces.
Neutral Sodium Fluoride - ANSWER Agent of choice on root caries, implants, cosmetic
restorations, and reduced salivary flow.
Second trimester - ANSWER safest trimester for dental treatment.
Pregnancy gingivitis - ANSWER -Caused by an elevation of hormones estrogen and
progesterone. Hormones increase can cause exaggerated gingival response to
microorganisms.
Pyrogenic granuloma (Pregnancy tumor) - ANSWER localized area of gingival
enlargement, typically involving interdental papilla, usually diminishes after delivery of
baby.
What category of LA can use administer to a pregnant patient? - ANSWER Category B
(lidocaine and prilocaine)
, Can you use Nitrous oxide sedation and general sedation on a pregnant patient? -
ANSWER relative contraindication (gas interferes with the absorption of B-12 and other
nutrients).
Early Childhood Caries (ECC) index - ANSWER -presence of 1 or more areas of decay on a
child younger than 6 years of age
Severe-Early Childhood Caries (S-ECC) index - ANSWER -Presence of decay in a child
younger than 3 years old.
When should a child's first dental appointment occur? - ANSWER -Within 6 months of
the eruption of the first tooth or before 1-year of age.
When should you first start brushing a child's teeth? - ANSWER -When the first tooth
appears.
Erosion causes - ANSWER -Anorexia Nervosa
-Bulimia Nervosa
Anorexia Nervosa - ANSWER extreme weight loss caused by self-starvation, excessive
exercise, use of laxatives, self-induced vomiting.
Bulimia Nervosa - ANSWER compulsive disorder that involves periods of starvation,
binging, and purging.
Signs and Symptoms of erosion - ANSWER -dental caries from vomiting
-Perimolysis: erosion from vomiting mostly on the maxillary lingual surfaces. Raised
WITH CORRECT ANSWERS
Bass Method - ANSWER Most widely used method. Bristles are angled at a 45 degree
angel towards the gingiva.
Stillman's Method - ANSWER Bristles are positioned on the gums rather than into the
pockets and directed at a 45 degree angle.
Charter's Method - ANSWER Bristles are directed occlusally, away from the gingiva.
Useful for cleaning orthodontic brackets, prosthesis, and areas treated with surgeries.
Fone's Method - ANSWER Bristles are moved in large circular motion on the buccal and
lingual surfaces. Useful for children, those physically impaired, or adults who lack manual
dexterity.
Fluoride Varnish - ANSWER -Dries immediately upon contact with saliva.
-Does not require a professional prophylaxis before hand.
-Can eat and drink immediately after.
-Avoid brushing, rigorous rinsing, or hard foods for 3 to 4 hours.
-Easier and more effective method
Fluoride is recommended for patients who: - ANSWER -Have xerostomia
-High caries risk
,-Undergoing cancer therapy
-Orthodontics
,Fluoride Gel or Foam (office application) - ANSWER -Applied onto tray and placed in
patient's mouth usually for 4 minutes (Read manufactures label).
-Do not eat, drink, or smoke for 30 minutes.
-Most popular types are 1.23% APF and 2% Neutral sodium fluoride.
Stannous Fluoride - ANSWER -0.4% available for non-prescription use.
-1% neutral sodium fluoride gels available for prescription use.
-Can cause extrinsic staining (especially in patient's with inadequate plaque control).
Acidulated Phosphate Fluoride (APF) - ANSWER -Do NOT use of composites, porcelain,
or sealant materials as it causing pitting and roughening.
-Also avoid on root surfaces.
Neutral Sodium Fluoride - ANSWER Agent of choice on root caries, implants, cosmetic
restorations, and reduced salivary flow.
Second trimester - ANSWER safest trimester for dental treatment.
Pregnancy gingivitis - ANSWER -Caused by an elevation of hormones estrogen and
progesterone. Hormones increase can cause exaggerated gingival response to
microorganisms.
Pyrogenic granuloma (Pregnancy tumor) - ANSWER localized area of gingival
enlargement, typically involving interdental papilla, usually diminishes after delivery of
baby.
What category of LA can use administer to a pregnant patient? - ANSWER Category B
(lidocaine and prilocaine)
, Can you use Nitrous oxide sedation and general sedation on a pregnant patient? -
ANSWER relative contraindication (gas interferes with the absorption of B-12 and other
nutrients).
Early Childhood Caries (ECC) index - ANSWER -presence of 1 or more areas of decay on a
child younger than 6 years of age
Severe-Early Childhood Caries (S-ECC) index - ANSWER -Presence of decay in a child
younger than 3 years old.
When should a child's first dental appointment occur? - ANSWER -Within 6 months of
the eruption of the first tooth or before 1-year of age.
When should you first start brushing a child's teeth? - ANSWER -When the first tooth
appears.
Erosion causes - ANSWER -Anorexia Nervosa
-Bulimia Nervosa
Anorexia Nervosa - ANSWER extreme weight loss caused by self-starvation, excessive
exercise, use of laxatives, self-induced vomiting.
Bulimia Nervosa - ANSWER compulsive disorder that involves periods of starvation,
binging, and purging.
Signs and Symptoms of erosion - ANSWER -dental caries from vomiting
-Perimolysis: erosion from vomiting mostly on the maxillary lingual surfaces. Raised
