dentinal hypersensitivity Flashcards
presentation of hypersensitivity
dentinal tubules
from pulp to outer dentinal surface
can be open or plugged
total number varies
contents of dentinal tubules
tomes fibers from the odontoblasts in pulp
what nerve fibers can be associated with tomes fibers
A-delta
A-beta
C
Hypersensitive Dentin
* Tubules open/closed?
* Large number of?
- Tubules open to cavity
- Large number of tubules
Smear Layer
* Deposit of?
* Debris from?
- Deposit of Salivary Proteins
- Debris from toothpaste and other
matter
branstroms hydrodynamic theory
Stimuli are transmitted to the pulp surface due to the movement of fluid or semi-fluid within open dentinal tubules
etiology of dentinal hypersensitivity
possible cause gingival recession
enamel loss common cause
erosion
causes of erosion
hypersensitivity prevalence
occurs in?
common ages?
sex?
▪Occurs in all age ranges
▪ Higher incidence in 20-40 year old age group
▪Females more prone
common site hypersensitivity
buccal and labial surfaces
common teeth that have hypersensitivty
- Canine/premolar
- Incisors
- 2nd pre-molars and molars
diagnosis of hypersensitivity is one of?
exclusion
tx to hypersensitivty?
mod pt behavior
mod diet
teeth whitening
in office tx options to sensitivity
- Varnishes/Precipitates
- Primers
- Placement of restorations: Composite resin-based/ Restorations with glass ionomer
At Home sensitivity tx options?
- Dentifrices, Gels, Rinses
- Mode of action: Interference of action potential or Tubule Occlusion
Glutaraldehyde/HEMA based agents for hypersensititvity mechanism?
Significantly reduce hypersensitivity immediately after treatment
Reduces dentin permeability
5% Sodium Fluoride Varnish for hypersensitivity
forms? relief provided by?
Forms a barrier over exposed dentin
Relief provided by calcium fluoride deposits
Recaldent (CPP-ACP)
Casein phosphopeptide – amorphous calcium phosphate
Mechanism of action?
use?
At home
Mechanism of action:
- replaces calcium and phosphate ions
Use:
- apply with a prophy cup
- at home use-applied after brushing teeth*
at home tx to interfere with AP of sensitivity
works by?
freq of use needed?
Dentifrices containing 5% potassium nitrate
Works by penetrating the length of the tubule to depolarize the nerve endings
Frequent and regular application is needed
at home tubule occlusion for sensitivity
main ingredient?
most common compound used? others?
Rx one? (%/ppm)
Main active ingredient is fluoride
*Stannous Fluoride – most commonly used
*Arginine and calcium carbonate
*Hydroxyapatite
Prescription Strength Fluoride Toothpaste:
5,000 ppm (1.1% Sodium Fluoride) – Colgate PreviDent
