2. SULFUR DIOXIDE
is the chemical compound with the formula SO2.
It is a toxic gas with a pungent, colorless irritating
smell, that is released by volcanoes and in various
industrial processes.
Since coal and petroleum often contain sulfur
compounds, their combustion generates sulfur dioxide
unless the sulfur compounds are removed before
burning the fuel.
is used to preserve foods.
It is one of a group of sulfiting agents, used in wine, on
many dried fruits and in numerous other foods.
Sulfur dioxide is formed when sulfur-containing
fuels, such as coal and oil, are burned.
3. SULFUR DIOXIDE
The primary sources of sulfur dioxide emissions are
power plants, refineries and copper smelting facilities.
However, man-made emissions of sulfur dioxide have
been the cause of some of the worst air pollution
episodes in the last century.
Sulfur dioxide is one of the six major air pollutants in
the U.S.
In the atmosphere, sulfur dioxide can form dangerous
sulfates, which can be breathed deep into the
lungs, and sulfuric acid, the major acidic component of
acid rain, that can harm fish, damage forests and
plants, and erode buildings.
4. DISEASE - BRONCHIOLITIS OBLITERANS
A lung disease caused by inhalation of Sulfur
dioxide.
Due Sulfur Dioxide Inhalation
The exposure can cause scarring of the
lungs which can lead to obstruction of the
small airways and ultimately impaired lung
function.
Chronic exposure can lead to gradual
worsening of symptoms over a period of
time.
5. DISEASE - BRONCHIOLITIS OBLITERANS
Acute exposure can result in lung damage that
may be asymptomatic for a short period of time
but can then lead to rapid death due to severe
obstructive breathing problems.
Severity of symptoms and outcome depend on
degree of exposure. from exposure to
deleterious agents (usually
toxins, gases, inhalants, etc.) while working.
at any time, from exposure to
toxins, poisons, environmental, or other
substances.
6. DIAGNOSIS (TESTS)
Chest X-rays tests.
Diffusing capacity of the lung (DLCO) tests are usually
normal.
Spirometry tests show fixed airway obstructions and
sometimes restriction.
Lung volume tests may show hyperinflation (excessive air
in lungs caused by air trapping)
High-resolution computerized tomography scans of the
chest at full inspiration and expiration may reveal
heterogeneous air trapping on the expiratory view as well
as haziness and thickened airway walls.
Lung biopsies may reveal evidence of constrictive
bronchiolitis obliterans
7. DIAGNOSIS (SYMPTOMS)
Low levels of
oxygen in blood
shortness of
breath
dry cough
Wheezing
Breathing difficulty
Tiredness
8. TREATMENT
This disease
is irreversible
Require/s a
lung transplant
Steroid
Treatment
9.
10.
11. DENTAL CORRELATION
Persistent oral malodor though is due to the
formation of a series of volatile chemicals, of
which the sulfur compounds are the most
studied.
The volatile substances derived from
sulfur, known generically as volatile sulfur
compounds (VSC) include hydrogen sulfide
(H2S), methyl mercaptan (CH3SH), dimethyl
sulfide (CH3) 2S and dimethyl trisulfide (CH3)
2S3, which are often produced in the oral
environment by metabolizing protein substrates
by some members of the oral microbiota.
