NBDE operative dentistry Exam
2025 Questions and Answers 100%
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bacteria adheres too tooth
plaque bacteria eat ____
metabolize sugars and make ____
acid lowers pH
critical pH reached ____ of tooth occurs - ✔✔refined carbs
acid byproducts
demineralization
Cariogenic bacteria SALIVA - ✔✔S. mutans, sanguis, mitis, salivarius
A. viscus
Lactobacilli
Veillonella
A. naeslundi
most common bacteria in coronal caries - ✔✔streptococcus mutans
lactobacilli
most common bacteria in root surface - ✔✔actinomyces viscus
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 1
, earliest found organisms - ✔✔streptococcus sanguis
frank caries - ✔✔progressed into dentinoenamel junction DEJ
bacteria in pit and fissure caries - ✔✔S. sanguis
prevent pit and fissure caries - ✔✔fissurotomy
sealant
TF slower progression of smooth surface caries bc less tubues are affected - ✔✔true
how do you prevent smooth surface caries - ✔✔fluoride
zones of incipient lesion - ✔✔translucnt zone
dark zone
body zone
surface zone
translucent zone of incipient lesion - ✔✔deepest zone
composition-less appearance under polarized light
dark zone of incipient lesion - ✔✔remineralization
inabiilty to transmit polarized light
body zone of incipient lesion - ✔✔largest zone
demineralizing phase
surface zone of incipient lesion - ✔✔outermost zone
seems unaffected by caries
dentin contains less ____ and more ____ - ✔✔mineralized tissue
tubular structures
which has more bacteria infected dentin or affected dentin - ✔✔infected dentin
demineralization can be reversed in infected or affected dentin - ✔✔affected dentin
zones of carious dentin - ✔✔1. normal dentin
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 2
2025 Questions and Answers 100%
Pass
bacteria adheres too tooth
plaque bacteria eat ____
metabolize sugars and make ____
acid lowers pH
critical pH reached ____ of tooth occurs - ✔✔refined carbs
acid byproducts
demineralization
Cariogenic bacteria SALIVA - ✔✔S. mutans, sanguis, mitis, salivarius
A. viscus
Lactobacilli
Veillonella
A. naeslundi
most common bacteria in coronal caries - ✔✔streptococcus mutans
lactobacilli
most common bacteria in root surface - ✔✔actinomyces viscus
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 1
, earliest found organisms - ✔✔streptococcus sanguis
frank caries - ✔✔progressed into dentinoenamel junction DEJ
bacteria in pit and fissure caries - ✔✔S. sanguis
prevent pit and fissure caries - ✔✔fissurotomy
sealant
TF slower progression of smooth surface caries bc less tubues are affected - ✔✔true
how do you prevent smooth surface caries - ✔✔fluoride
zones of incipient lesion - ✔✔translucnt zone
dark zone
body zone
surface zone
translucent zone of incipient lesion - ✔✔deepest zone
composition-less appearance under polarized light
dark zone of incipient lesion - ✔✔remineralization
inabiilty to transmit polarized light
body zone of incipient lesion - ✔✔largest zone
demineralizing phase
surface zone of incipient lesion - ✔✔outermost zone
seems unaffected by caries
dentin contains less ____ and more ____ - ✔✔mineralized tissue
tubular structures
which has more bacteria infected dentin or affected dentin - ✔✔infected dentin
demineralization can be reversed in infected or affected dentin - ✔✔affected dentin
zones of carious dentin - ✔✔1. normal dentin
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 2
