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NBDE operative dentistry Exam 2025 Questions and Answers 100% Pass

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NBDE operative dentistry Exam 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 2COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 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 - remineraliz

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NBDE operative dentistry Exam
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
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