QUESTIONS AND ANSWERS
Dental Caries - ANSWER-the bacteria infection if the
mineralised tissues of the tooth
Gingivitis - ANSWER-the inflammation of the gingival tissues at
the neck of the tooth
periodontitis - ANSWER-the inflammation of the supporting
structures of the tooth
how is tooth decay made? - ANSWER-the crystals of both the
dentine and enamel are demineralised by acids, this allows the
softer organic components of the tooth structures to be broken
down to cavities.
How are acids produced? - ANSWER-the acids in the foods are
turned in to waste products by the bacteria in the mouth. the
bacteria digest the foods we eat and shit out acids and eat our
own foods as nutrition.
Which bacteria are associated to decay? - ANSWER--
streptococcus mutants (initial stage of cavity formation)
-streptococcus sanguis
-lactobacilli (later stage of cavity formation)
what foods are easily formed in to damaging organic acids? -
ANSWER-carbohydrates
what is the development of caries? - ANSWER--the presents of
certain types of bacteria
, -carbohydrate foods
-the production of weak organic acids by these bacterias
adequate time for the acids to attack
what does the combination of food debris and bacteria form? -
ANSWER-a thin, transparent, protein coating, soft and sticky
film called plaque.
what is called stagnation areas? - ANSWER-plaque that sticks
to the places where its not easily dislodged such as gingival
margins, fissures of teeth and around dental restorations
what is associated with the onset of gingivitis and periodontal
disease? - ANSWER-the build up of plaque
what does the plaque allow when stuck on to the tooth surface?
- ANSWER-it allows the bacteria living within the plaque to turn
sugars in to weak acids which dissolve the enamel to produce
dental caries.
what is the main micro organism which initiates the process of
caries? - ANSWER-streptococcus mutants
what is a cariogenic food? - ANSWER-carbohydrates because
they turn in to acid by bacteria and therefore cause caries
what is NMES? (non-milk extrinsic sugars) - ANSWER-these
are artificially added to food during the process of food that is
made
what is the most damaging NMES? - ANSWER-refined sugars
sucrose and glucose (also called dextrose)
intrinsic sugars - ANSWER-these are naturally found in foods
such as fruits which is fructose
Milk extrinsic sugars - ANSWER-lactose is a example