OPERATIVE INBDE EXAM 2025
QUESTIONS AND ANSWERS
The average cost for a community to fluoridate its water is estimated to range from
approximately $0.50 a year per person in large communities to approximately $3.00 a
year per person in small communities. For most cities, every $1 invested in water
fluoridation saves ____ in dental treatment costs. - ANSWER✔✔-$38
In relation to teeth, fluoride is characterized by the following: concentration increases in
the external layer of enamel throughout life, concentration increases during topical
application, but decreases for a few days after treatment, Fluoride uptake is greater in
enamel than in dentin or cementum, Increasing the fluoride content in the external
layers of the tooth increases the resistance of the enamel to demineralization -
ANSWER✔✔-True
The optimal concentration of fluoride in community drinking water depends upon the
average air temperature and the average water consumption - ANSWER✔✔-True
For temperature climates it is 1 ppm, for warmer and colder climates, the amount can
be adjusted from 0.7 to 1.2 ppm, respectively.
, In communities without fluoridated water supplies, the most cost-effective method of
delivering fluoride to 6-12 years old children is through - ANSWER✔✔-school water
fluoridation
The most effective means of increasing the fluoride content in the external layers of
teeth is the - ANSWER✔✔-daily application of 1.23% acidulated phosphate fluoride in
fitted trays for four minutes.
You would prefer your assistant overtriturate the amalgam rather than undertriturate
it, this is because an overtriturated amalgam will still have optimal strength -
ANSWER✔✔-Both statements are true
The longer the trituration time of amalgam, the - ANSWER✔✔-smaller the setting
expansion
If the trituration is carried to the extend that the amalgam appears shiny and wet, the -
ANSWER✔✔-strength will be maximal and the smooth, carved surface will retain its
luster long after polishing.
A properly triturated amalgam appears - ANSWER✔✔-shiny, wet, smooth and
homogenous
Inadequated trituration of amalgam results in an amalgam mix that has a -
ANSWER✔✔-low strength and a rough surface that will accelerate corrosion.
An undertriturated amalgam mixture will appear - ANSWER✔✔-dry and grainy.
QUESTIONS AND ANSWERS
The average cost for a community to fluoridate its water is estimated to range from
approximately $0.50 a year per person in large communities to approximately $3.00 a
year per person in small communities. For most cities, every $1 invested in water
fluoridation saves ____ in dental treatment costs. - ANSWER✔✔-$38
In relation to teeth, fluoride is characterized by the following: concentration increases in
the external layer of enamel throughout life, concentration increases during topical
application, but decreases for a few days after treatment, Fluoride uptake is greater in
enamel than in dentin or cementum, Increasing the fluoride content in the external
layers of the tooth increases the resistance of the enamel to demineralization -
ANSWER✔✔-True
The optimal concentration of fluoride in community drinking water depends upon the
average air temperature and the average water consumption - ANSWER✔✔-True
For temperature climates it is 1 ppm, for warmer and colder climates, the amount can
be adjusted from 0.7 to 1.2 ppm, respectively.
, In communities without fluoridated water supplies, the most cost-effective method of
delivering fluoride to 6-12 years old children is through - ANSWER✔✔-school water
fluoridation
The most effective means of increasing the fluoride content in the external layers of
teeth is the - ANSWER✔✔-daily application of 1.23% acidulated phosphate fluoride in
fitted trays for four minutes.
You would prefer your assistant overtriturate the amalgam rather than undertriturate
it, this is because an overtriturated amalgam will still have optimal strength -
ANSWER✔✔-Both statements are true
The longer the trituration time of amalgam, the - ANSWER✔✔-smaller the setting
expansion
If the trituration is carried to the extend that the amalgam appears shiny and wet, the -
ANSWER✔✔-strength will be maximal and the smooth, carved surface will retain its
luster long after polishing.
A properly triturated amalgam appears - ANSWER✔✔-shiny, wet, smooth and
homogenous
Inadequated trituration of amalgam results in an amalgam mix that has a -
ANSWER✔✔-low strength and a rough surface that will accelerate corrosion.
An undertriturated amalgam mixture will appear - ANSWER✔✔-dry and grainy.
