Lecture 4 Flashcards
index
standard method of rating on a scale
ideal index
measures what it claims to measure (valid) and reliable (repeatable, reproducible, consistent at any time under a variety of conditions)
DMFT/S and dft/s Dental Indices
Permanent (DMFT/S)
DMFT = 0-28
DMFT/S = 0-128
Primary (dft/s)
dft = 0-20
dfs = 0-88
Posterior: 5 surfaces
Anterior: 4 surfaces
What are exclusions to DMFT/S and dft/s?
do not count:
3rd molars
unerupted teeth
congenitally missing or supernumerary teeth
teeth lost not to caries/disease
retained primary teeth
What are the limitations of DMFT/S and dft/s?
data is not useful for identifying treatment needs
indices don’t account for sealed teeth
indices don’t relate to teeth at risk
indices give equal weight to missing, untreated, or well-restored teeth
indices don’t account for teeth lost for other reasons, such as ortho or perio disease
D1-D3 Scale
first published by WHO 0= sound D1 = initial caries D2 = Enamel caries D3 = dentin caries D4 = Pulpal involvement
What are the benefits of D1-D3 scale?
ID lesion initiation and progression
addresses research questions (conditions under which early lesions progress/regress or remain static)
What are the weaknesses of D1-D3 scale?
meticulous examiner training
application for large scale studies is questionable
most studies use the dichotomous scales: caries present or not
Root Caries Index (RCI)
uncertainty in diagnostic reliability
ICDAS (international caries classification and management system)
system of caries detection/assessment reflecting current scientific understanding of carious process
- coronal caries
- root caries
- caries adj. to restorations or sealants
scale goes from health to disease and shows progression of disease
Where can ICDAS be use?
criteria record both enamel and dentin caries and explore the measurement of caries activity in: epidemiology Public Health, Clinical Research, Clinical Practice, Education
ICDAS codes
consist of two digits:
first, refers to the presence of restoration and/or sealant
second refers to caries
Caries Code: Score 0 (icdas)
sound, no evidence of caries
Caries Code: Score 1
first visual change in enamel
Caries Code: Score 2
distinct visual change in enamel
Caries Code: Score 3
localized enamel breakdown due to caries w/ no visible dentin
Caries code: Score 4
non-cavitated surface w/ underlying dark shadow from dentin
caries code: score 5
distinct cavity w/ visible dentin
caries code:score 6
extensive distinct cavity w/ visible dentin
