The original post went missing from my server. I can't reply, so I reposted in a
new thread.

This sounds like Dens evaginatus not to be confused with Dens invaginatus (Dens
in dente).

Also known as :
Occlusal Tuberculated Premolar
Leong's premolar
Evaginated Odontome
Occlusal Enamel Pearl

Predominate in persons of Mongoloid ancestry but one study reports a series of
cases in Caucasians in England.

The text below describes the condition it is copied from:
www.ada.org.au/media/documents/Products_Publications/
Journal%20Archives/1998%20Archive/October/9810Ngeo.pdf

or

http://tinyurl.com/6r897

Dens evaginatus is a developmental anomaly

which is found most frequently in premolars. It

occurs almost exclusively among people of

Mongoloid racial stock such as the Chinese,

Japanese, Eskimos and to a lesser extent, the Malays,

Filipinos, American Indians and the Thai. Isolated

cases of dens evaginatus have also been documented

in Caucasians.

In Malaysia and Singapore, this anomaly is

popularly referred to as 'Leong's premolar', after M.

O. Leong who first drew attention to the anomalous

premolar at a meeting of the Malayan Dental

Association in 1946. Leong did not realize that the

premolars were not the only teeth affected.

Occasionally the molar, 2 canine and incisor teeth

were also affected.

Dens evaginatus appears as an accessory cusp or

tubercle located between the buccal and lingual

cusps of premolars. It is composed of an enamel

covering over a dentine core with a fine extension of

pulpal tissue. Dens evaginatus has practical

significance because of its morphology and extension

of pulpal tissue. If the tubercle fractures, the pulpal

extension into the tubercle may be exposed to the

oral environment. This can result in early pulpal

inflammation (pulpitis), necrosis, periapical infection

and even osteomyelitis.

I think Joel Eichen (Dr. "odontocruditis") as well as your dentist could use a
refresher course in oral pathology. If you are near Toronto, there is a
professor at UofT -Dentistry that is well know for his knowledge in tooth
anomalies.

--
Roy

sunnydolly2003 wrote:
After moving to Canada, I have great difficulties convincing the
Canadian dentists of my problem. Maybe I need an appropriate medical
term. Can somebody help?

I have 2 molars and 2 pre-molars that are genetically abnormal. The
centre of the tooth is protruding, like a tube/cap growing out of the
top surface. A dentist told me that the "cap" would continue to grow
upwards if left alone. What is the medical term for this type of teeth?

My childhood dentist removed the "cap" on the 2 molars and filled the
top. Later, the "cap" on one of the premolars chipped off, and I got a
root-canal treatment for this premolar.

Then I moved to Alberta, Canada. The "cap" on the other premolar came
off also. So all 4 abnormal teeth no longer had the "cap", and the
abnormality is no longer visible on the outside. (Surprisingly, the
x-rays in canada cannot reveal the problem either, and the dentists
keep telling me that my teeth have no genetical problem.) I got serious
nerve inflamation and fainted in front of the dentist, before he
finally drilled deeper into the premolar, and gave me a root-canal
treatment.

Now I am living in Ontario, Canada. The fillings on my molars are
coming off. My guess is I need them re-filled, so I went to a dentist
today. Once again, the dentist said my molars have no problem, no
genetical problem at all. I told him my "story", and he gave me that
same expression of ridicule. (Please, not again!)

What do I have to do to convince him? Perhaps an appropriate medical
term for my abnormal teeth will help? Can somebody shed some light
please?

What do I have to do to convince him? Perhaps an appropriate medical
term for my abnormal teeth will help? Can somebody shed some light
please?