Flashcards in Dental hygiene Deck (130)
Dentitions of teeth
formation begins in utero
when primary teeth are being exfoliated and permanent teeth are moving in to take their place
mixed dentition occurs
between ages 6 and 12
permanent dentition mineralization
starts at birth and continues or until adolescence.
Roots have normally completed growth
by 3 years after eruption
world health organization
the WHO defines caries as
a localized post-eruptive, pathologic process of external origin involving softening of the hard tooth tissue and proceeding to the formation of a cavity
true or false: Dental caries is a preventable disease
Dental caries are communicable and its a hygienists job to
educate patients to prevent the spread of dental caries.
development of dental caries requires
microorganisms, carbohydrates and susceptible tooth surface.
Dental biofilm may contain numerous types of acid-forming bacteria specifically:
Mutans Streptococci and Lactobacilli
who developed the standard method of classifying caries.
the categories of G.V Blacks classifcations of cavities are used for
Caries, preps and finished restorations
Nomenclature by surface
Simple cavity, compound cavity and complex cavity.
involves one surface
involves two tooth surfaces.
involves two or more tooth surfaces.
Phase I in formation of a cavity
Phase II of formation of cavity
Untreated incipient lesions
During Phase I of formation of a cavity
subsurface demineralization happens
acid passes through from surface enamel to subsurface area in the dentin
Visualization during Phase I of formation of a cavity
area of demineralization not visible by clinical observation
First clinical evidence of cavity formation
white area appears with no breakthrough to enamel.
During Phase I of cavity formation you can try to reverse cavity by
low concentrations of fluoride applied frequently during early phase can provide sources for uptake by demineralized area.
Sources of fluoride can be:
dentifrices, mouth rinse, fluoridated water and all possible sources.
Untreated incipient lesion
Breakdown of enamel over the demineralized area.
Vision during Phase II of cavity formation
Visible to observation and irregular to touch with explorer.