last lecture ! Flashcards
biological reaction can take place either at a _____ level(injection site) or far_____
local level
far removed from the site of contact
may not always be readily apparent
systemically
dermatological, immune-mediated or neural reactions
systemicallly
possible interactions between dental restorative material and the biological environment include:
- post-operative sens
- toxicity
- corrosion
- hypersensitivity/allergy
nanomaterial growing concern about their biosecurity and crossing the blood-brain barrier and going to the CNS
toxicity
amalgam ir its components may cause type IV 24 hours after exposure or oral mucosa
hypersens
contact allergy that showed mucosal changes, contact stomatitis, and burning sensation of mouth
denture stomatitis
most common allergys
metals- nickel and cobalt
direct contact of oral mucosa with this material can cause oral chronic inflammatory lesions on the oral mucosa
mercury
ask patient if they can wear costume jewelry
nickel
highly aggresive neoplasm. need to know more frequenct Dx
of oral cavity
mucosal melanoma
most common causes of allergic contact dermatitis and produces more allergic reactions than all other metals combined
nickel
these were developed to be applied to the dentin prior to the placements of the final restoration
intermediate restorative materials
cavity varnishes, bases and liners, intended to remain in place permanently
should not be confused with temp restorative materials
intermediate restorative materials
roles: protective, palliative or therapeutic
intermediate restorative
intermediate restorative materials goal is to protect pulp from:
an example is
chemical
eletrical
thermal
example: ZOE (sedative like qualities on hypersens pulp and is good thermal insulator as well
intermiedate restorative material:
- acts as a thermal insulator
- excellment abrsion resistance
- good sealing properties
- low solubility
- may be used under cements and restorative materials that DO NOT contain resin components
may be used under cements and restorative materials that DO NOT conain resin components
intermediate restorative material
4 things to consider wit IRM
- wont discolor
- harden quick
- withstand condensations
- easily manipulated
liners and bases are placed between dentin and restoration to provide
pulp protection or pulpal response
protective needs for restoration vary depending on
extent and location of prep and restorative material to be used
thick mix of material which is placed in bulk. used as dentin replacement to minimize final restorative material
bases
used to block out undercuts
base
only applied as thin coating over exposed dentin
liners