Old quiz questions Flashcards
Providing replacement for missing and/or hopeless teeth would be an example of which level of preventive care
Tertiary prevention
T/F: Caries are the most prevalent and preventable INFECTIOUS disease in the US
True
What is 0.12% chlorohexidine gluconate oral rinse (ie peridex) used to treat?
gram positive bacteria
gram negative bacteria
fungal infections
(It is broad spectrum)
Which duct produces primary mucous saliva
Sublingual saliva
The final salivary product is __ to plasma
hypotonic
The overwhelming majority of stimulated saliva comes from which gland?
Parotid gland
Which buffer system is the key player in stimulated saliva ?
carbonic acid/ bicarbonate
What is normal unstimulated salivary flow rate?
0.5 mL/min
What is the name of the duct associated with the parotid gland
stendons duct
What is the critical pH of enamel
5.5
T/F: Slatherins help to keep the tooth healthy by promoting saturation of calcium salts within the enamel
True
T/F: Dental caries is a dynamic process and the end result does NOT always lead to cavitation
True
What can be said about a white spot lesion which is shiny, smooth, and has no tactile roughness
The lesion is arrested
Which are the FIRST bacteria to attach to the pellicle
Gram positive aerobic cocci
What gland is responsible for the vast majority of serous saliva
Parotid gland
Which of the following is true regarding the anticariogenic properties of xylitol
- Bacteria are unable to produce lactic acid in it presence
- increases salivary flow, thus enhancing salivary buffering capacity
- decreases overall bacteria levels in the oral microbiome
- Stabilization of oral pH
All of the above are true
While providing your patient with tailored oral hygiene instructions, which of the following instructions will you demonstrate
1. Hold the toothbrush at a 90 degree angle against the tooth surface
2. Use gentle circular motions
3. Use a hard bristled toothbrush for most effective biofilm removal
4. demonstrate creating a c-shape with the floss to hug the curvature of each tooth
2
4
What is true of MATURE biofilm formation
-An anaerobic environment
-production of lactic acid
-presence of facultative anaerobes
-presence of strep mutans and lactobacilli
How long does it take for early biofilm to colonize
30-60 min
Which of the following are true regarding enamel pellicle ?
1. Protein rich film covering enamel surface
2. Forms immediately after tooth is cleaned
3. Protects the tooth
4. Allows bacteria to attach to tooth surface
All of the above
Which of the following medications would be the first option to consider if a patient experiences a fungal infection as a result of dry mouth
Nystatin
T/F: Xerostomia is a term used to describe severe dry mouth as a result of the natural process of aging
False
Which of the following are clinical findings associated with xerostomia
1. Cobblestone tongue
2. Loss of papillae on the tongue
3. White patches indicative of fungal infections
4. rampant decay
All of the above
Which of the following could result from ill-fitting removable appliances
1. Epulus Fissuratum
2. Fungal Infection
3. Bacterial infection
All of the above
Which restorative material is best to use on an elderly patient with multiple lesions of root caries
Glass ionomer
Which of the following is true regarding acinar cells of the salivon
1. Sodium and chloride are reabsorbed
2. Sodium-potassium pumps are embedded in the apical membrane
3. sodium-potassium pumps transport 3 sodium ions into the cell, and 2 potassium ions out of the cell
4. Transport can occur through both transcellular and paracellular routes
4
Which of the following would be expected with an increase in PSNS output to the salivary glands
1. Stimulation of acinar cell secretion
2. Relaxation of the myoepithelial cells
3. vasoconstriction of blood vessels surrounding the salivary glands
4. a decrease in salivary flow rates
1
Which of the following is a disease indicator which automatically classifies the patient as “high risk”
1. A highly cariogenic diet
2. Limited fluoride
3. A filling placed two years ago
4. Recession which exposes root surfaces
3
What is the primary substrate associated with caries formation
Sucrose
What is the role of glucan in biofilm formation
Creates a sticky environment needed for bacteria adhesion
For a high caries risk patient, how frequently should a bitewing be taken
Every 6 months
What is the appropriate at home care for a high caries risk patient
1.1% NaF toothpaste and in-office varnish
Sealants are recommended for which of the following
1. moderate caries risk
2. high caries risk
3. deep pits and fissures
All of the above
Which of the following is NOT recommended for conventional caries detection methods
1. visual inspection
2. tactile inspection
3. radiographic detection
4. exploration with sharp explorer and ample pressure
4
Molted enamel with brown staining and pitting is __
fluorosis / hypomineralization
When does fluorosis happen
During mineralization stage in which ameloblasts are laying down enamel
What is secreted by both salivary acinar and ductal cells
potassium
The final salivary product is __ because __
hypotonic
Ductal cells are attached by tight junctions, preventing the reabsorption of water
Which of the following are true regarding systemic acquisition of fluoride?
1. only beneficial to pre-erupted teeth
2. Is most beneficial during mineralization stage of tooth development
3. amount and duration of exposure will determine benefits
All of the above
Fluorosis is a form of
Hypomineralization
Which is true of fluorosis
1. occurs during maturation stage of tooth development
2. excess fluoride inhibits the ameloblasts from functioning properly
3. Can occur pre and post eruption
4. Can be caused by excess systemic and topical fluoride
2
Which of the following are mechanism of action of fluoride
1. Inhibits bacterial metabolism
2. Strengthens enamel
3. prevents sensitivity
4. remineralization of tooth structure
All of the above
What is the current recommended amount of fluoride in public water sources
0.7 ppm
T/F: Community Water Fluoridation is the single most effective and efficient means for preventing dental caries in children and adults regardless of race or income
True
The most common OTC dentifrices (toothpastes) have this amount of fluoride in them
1000 ppm
Which variety of fluoride is recommended for patients with gingivitis or periodontitis
Stannous Fluoride
T/F: Sealants are recommended on molars with deep pits and fissures regardless of their caries risk status
True
Which of the following is true regarding an occlusal sealant
1. It should be opaque in color
2. It should be light cured
3. A poorly placed sealant with leaky margins is worse than no sealant at all
All of the above are true
