s10-finals-Biological Dental Caries Control in Children Flashcards
(30 cards)
What is the primary goal of the biological approach to caries control in children?
To manage or arrest caries without removing carious tissue, preserving tooth structure and pulp health.
Why is conserving tooth structure emphasized in pediatric caries management?
To avoid weakening deciduous teeth and reduce risks of pulp damage or premature tooth loss.
How does the biological approach differ from conventional “drill and fill” methods?
It prioritizes disease control and remineralization over surgical removal of carious tissue.
What is proximal slicing in NRCT, and what problem does it address?
Removing overhanging enamel margins to make cavitated lesions cleansable, preventing biofilm stagnation.
What is the main challenge of proximal slicing?
Maintaining parental/caregiver motivation for oral hygiene adherence.
What are the active components of Silver Diamine Fluoride (SDF)?
Silver (antimicrobial), fluoride (remineralization), and ammonia (stabilizer).
How does SDF’s “silver-fluoride bullet” mechanism work?
Silver disrupts bacterial cell membranes/DNA, while fluoride promotes remineralization.
What is the “Zombie Phenomenon” in SDF’s action?
Dead bacteria with embedded silver particles kill adjacent live bacteria.
What percentage of caries arrest can SDF achieve in primary teeth after 2 years?
68–83% for cavitated lesions, 56–71% reduction in new lesions.
When is SDF contraindicated?
In cases of silver allergy, pulpitis, necrosis, or ulcerative gingivitis.
What are the steps to protect soft tissues during SDF application?
Use Vaseline on gingiva, plastic bib, and glasses; avoid mucosal contact.
Why is SDF considered cost-effective for pediatric caries?
It requires no drilling, is quick to apply, and reduces need for general anesthesia.
What is the primary aesthetic drawback of SDF?
Black staining of carious lesions due to silver phosphate formation.
How can SDF’s staining be mitigated?
Using potassium iodide (KI), silver nanoparticles, or restorative coverage (SMART technique).
What causes SDF treatment failures?
Poor case selection (e.g., advanced pulp involvement) or lack of oral hygiene compliance.
What is the Hall Technique’s core principle?
Sealing caries beneath a stainless-steel crown without caries removal or tooth preparation.
Why is the Hall Technique considered “biological”?
It isolates caries from the oral environment, arresting progression without tissue removal.
What radiographic finding is required for Hall Technique eligibility?
A clear band of normal dentin between the caries and pulp.
Why might a child need orthodontic separators before a Hall crown?
To create space for crown placement in tight proximal contacts.
How is occlusion managed after Hall crown cementation?
The “high bite” resolves naturally in 15–30 days via tooth eruption.
What cement is used for Hall crowns, and why?
Glass ionomer (e.g., Fuji IX) for fluoride release and biocompatibility.
When is the Hall Technique contraindicated?
In pulpitis, necrosis, extreme anxiety, or esthetic concerns (e.g., anterior teeth).
How do bioactive materials aid in remineralization?
By releasing ions (Ca²⁺, F⁻) and inhibiting demineralization.
What is the mechanism of resin infiltrate for caries arrest?
Low-viscosity resin occludes enamel pores, blocking acid diffusion.
