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Panoramic
X-rays
These x-rays provide a
good view of the entire jaw and surrounding areas. With this x-ray
we can detect and monitor various conditions. For most individuals
this x-ray will be taken once every 5-6 years. For others, it may
be taken more frequently to monitor various conditions. The
following cases are some of the examples of things "not quite
normal" found at our office. Some are common, and some are much
more rare. Ultimately, a panoramic x-ray is a very thorough way of
helping to maintain and monitor your oral health.
Case #1:
Hypercementosis.
In the area highlighted
you will notice a large whitish mass around the roots of a tooth.
This mass is an increased number of cells that line the root
surface of the tooth. This is quite common and is generally not
treated. This does, however, pose a concern if the tooth ever
requires extraction as this mass can make it very difficult to
remove the tooth.
Case #2: Florid
Cemento-Osseous Dysplasia.
This condition is rarer
than the above and of greater importance to be aware of. This
condition involves multiple cyst like growths at the base of the
teeth. Some individuals have this with one or two teeth, while
others, like this individual, have it associated with multiple
teeth. One of the cysts is highlighted for you. This condition
causes expansion of the jaw bone, and in some cases displacement of
the teeth (making them crooked). This condition is sometimes
related to various systemic diseases and testing for these diseases
is recommended. For this individual, the original diagnosis
made 20 years prior was incorrect, and the condition has continued
to progress since that time. Panoramic x-rays every 5 years would
have caught this much earlier and allowed for better understanding
of the rate of progression of this condition.
Case #3: Compound
Odontoma
Radiopaque masses
(white spots on an x-ray) in the jaw are quite common and have many
possible sources. Many are just random increases in bone density
which are normal for that individual. Others, like this one
highlighted for you, is a cyst full of malformed teeth. In some
individuals a clump of cells destined to become teeth develop into
a cyst full of little malformed teeth or bits of teeth. In some
cases these cysts are removed to prevent further growth of the cyst
and damage to the jaw and other teeth. In other cases (if not
caught soon enough), the risks of removal out weigh the risks of
leaving it alone.
Case #4: Calcified
lymph node due to childhood TB
The mass highlighted in
this x-ray is that of a calcified lymph node in the patient's neck.
The cause of this has been diagnosed as childhood exposure to TB
(tuberculosis). This case is dormant and non-contagious, however,
10% of people who have asymptomatic TB will develop the active TB
disease at some point later in their life, which has a 50%
morbidity rate if left untreated. Standard tests for TB include
chest x-rays as that is the most common spot for TB to be located.
Finding TB on a panoramic x-ray is very rare, but very important
when it is found. With this information, this patient can be
diagnosed and treated appropriately if the inactive TB ever becomes
active again.
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