NDHCE COMPREHENSIVE EXAM 2026 QUESTIONS AND
SOLUTIONS RATED A+
✔✔how much saliva does sublingual gland produce? - ✔✔10%
✔✔which tooth structure are korff;s fibers located? - ✔✔mantle dentin
✔✔what microorganism does chlorhexidine suppress? - ✔✔streptococcus mutans
✔✔what vitamin is not fat soluble? - ✔✔vitamin c
✔✔deficiency in what can cause cheilosis and glossitis? - ✔✔riboflavin
✔✔what tooth has an oblique ridge? - ✔✔max first molar
✔✔oblique ridge runs from ________ to ________ surfaces - ✔✔mesiolingual to
distobuccal
✔✔what is most resistant to disinfective agents? - ✔✔hepatitis
✔✔desensitizing toothpastes need to be used for ________ before it is effective -
✔✔two weeks
✔✔pt's with an increased risk for bacterial endocarditis should rinse with
chlorhexidine.... - ✔✔pre-operatively before treatments such as extractions
✔✔what is the chlorhexidine staining caused by? - ✔✔reaction of chlorhexidine with
chromogens
✔✔chlorhexidine staining is.... - ✔✔easy to remove
✔✔what extrinsic stain has the potential to become intrinsic? - ✔✔green
when it becomes incorporated with decal areas
✔✔what is the most common inital manifestation of a penicillin allergy? - ✔✔rash
✔✔washing your hand between clients should be done for... - ✔✔15 seconds
✔✔what amount of alcohol is considered a disinfection? - ✔✔75%
✔✔what fluoride application immediately gets absorbed by the enamel? - ✔✔fluoride
varnish
, ✔✔the merge of three surfaces on a tooth is called? - ✔✔point angle
✔✔what group gives people the right to keep their group health insurance if they lost
their job? - ✔✔COBRA
✔✔what age is fluorosis most at risk for perm teeth? - ✔✔15-30 months of age
✔✔what artery is used to take blood pressure on a normal adult? - ✔✔brachial
✔✔describe areas of remineralization compared to normal enamel - ✔✔areas of
remineralization are STRONGER and MORE acid resistant than original enamel
✔✔fluoride in high concentrations is.... - ✔✔bacterialcidal
✔✔what are 3 characteristics of essential oils? - ✔✔oils alter the bacterial cell wall
control plaque and gingivitis
burning sensation associated with alcohol
✔✔if you apply fluoride on a child without the parents permission you are doing... -
✔✔technical battery
✔✔your mom has several porcelain veneers, what fluoride should you give them? -
✔✔2% neutral sodium fluoride
✔✔if pt suffers from xerostomia what fluoride should you give them? - ✔✔2% neutral
sodium fluoride
✔✔What is bluish-green stain associated with? - ✔✔inhaling metallic dust, most likely
for an occupational exposure
✔✔What is dark- brown stain associated with? - ✔✔tobacco use
✔✔what is green stain associated with? - ✔✔poor oral hygiene, chromogenic bacteria,
fungi, and gingival hemorrhage.
✔✔what type of mouth rinse should be avoided in tobacco smokers? - ✔✔essential oils
alcohol and tobacco increase risk for head and neck cancers
✔✔what does the diastolic reading measure? - ✔✔represents ventricular relaxation at
their lowest pressure
SOLUTIONS RATED A+
✔✔how much saliva does sublingual gland produce? - ✔✔10%
✔✔which tooth structure are korff;s fibers located? - ✔✔mantle dentin
✔✔what microorganism does chlorhexidine suppress? - ✔✔streptococcus mutans
✔✔what vitamin is not fat soluble? - ✔✔vitamin c
✔✔deficiency in what can cause cheilosis and glossitis? - ✔✔riboflavin
✔✔what tooth has an oblique ridge? - ✔✔max first molar
✔✔oblique ridge runs from ________ to ________ surfaces - ✔✔mesiolingual to
distobuccal
✔✔what is most resistant to disinfective agents? - ✔✔hepatitis
✔✔desensitizing toothpastes need to be used for ________ before it is effective -
✔✔two weeks
✔✔pt's with an increased risk for bacterial endocarditis should rinse with
chlorhexidine.... - ✔✔pre-operatively before treatments such as extractions
✔✔what is the chlorhexidine staining caused by? - ✔✔reaction of chlorhexidine with
chromogens
✔✔chlorhexidine staining is.... - ✔✔easy to remove
✔✔what extrinsic stain has the potential to become intrinsic? - ✔✔green
when it becomes incorporated with decal areas
✔✔what is the most common inital manifestation of a penicillin allergy? - ✔✔rash
✔✔washing your hand between clients should be done for... - ✔✔15 seconds
✔✔what amount of alcohol is considered a disinfection? - ✔✔75%
✔✔what fluoride application immediately gets absorbed by the enamel? - ✔✔fluoride
varnish
, ✔✔the merge of three surfaces on a tooth is called? - ✔✔point angle
✔✔what group gives people the right to keep their group health insurance if they lost
their job? - ✔✔COBRA
✔✔what age is fluorosis most at risk for perm teeth? - ✔✔15-30 months of age
✔✔what artery is used to take blood pressure on a normal adult? - ✔✔brachial
✔✔describe areas of remineralization compared to normal enamel - ✔✔areas of
remineralization are STRONGER and MORE acid resistant than original enamel
✔✔fluoride in high concentrations is.... - ✔✔bacterialcidal
✔✔what are 3 characteristics of essential oils? - ✔✔oils alter the bacterial cell wall
control plaque and gingivitis
burning sensation associated with alcohol
✔✔if you apply fluoride on a child without the parents permission you are doing... -
✔✔technical battery
✔✔your mom has several porcelain veneers, what fluoride should you give them? -
✔✔2% neutral sodium fluoride
✔✔if pt suffers from xerostomia what fluoride should you give them? - ✔✔2% neutral
sodium fluoride
✔✔What is bluish-green stain associated with? - ✔✔inhaling metallic dust, most likely
for an occupational exposure
✔✔What is dark- brown stain associated with? - ✔✔tobacco use
✔✔what is green stain associated with? - ✔✔poor oral hygiene, chromogenic bacteria,
fungi, and gingival hemorrhage.
✔✔what type of mouth rinse should be avoided in tobacco smokers? - ✔✔essential oils
alcohol and tobacco increase risk for head and neck cancers
✔✔what does the diastolic reading measure? - ✔✔represents ventricular relaxation at
their lowest pressure
