Welcome to all communities
Dental problems and ethnics
Crooked teeth and crooked jaws can occur in people of all background and all communities. There exist
numerous and different features and different traits as to how teeth are overlapped and how jaws are
not aligned when it comes to racial differences. For instance, people from Asian descent exhibit more
proclined incisors relative to their Caucasian counterparts, which have less prominent lips and more
prominent chins than people of African descent.
A strong influence of heredity on facial features is obvious at a glance—it is easy to recognize family
tendencies in the tilt of the nose, the shape of the jaw, and the look of the smile. Certain types of
malocclusion run in families. The Hapsburg jaw, the prognathic mandible (lower jaw too forward) of this
European royal family, is the best known example, but dentists routinely see repeated instances of
similar malocclusions in parents and their offspring. There are obviously inherited influences on the
jaws and teeth.
For much of the twentieth century, thoughts about how malocclusion could be
produced by inherited characteristics focused on two major possibilities. The first would be an inherited
disproportion between the size of the teeth and the size of the jaws, which would produce crowding or
“crowded teeth” or spacing. The second would be an inherited disproportion between the size or shape
of the upper and lower jaws, which would cause upper to lower jaw not biting together in a proper
position, one being too much forward or backward relative to the other. The more independently these
characteristics are determined, the more likely that disproportions could be inherited. A child could
inherit relatively large teeth but a jaw too small to accommodate them, for instance, or a large upper
jaw and a small lower one.
Different human groups have developed impressive variations in facial proportions, dental crowding,
crooked teeth and jaw relationships. Canada and the United States have one of the world's highest rates
The influence of inherited tendencies is particularly strong for mandibular prognathism (lower jaw that
is too much forward). Knowing the type of growth associated with different genetic patterns could help
greatly with both the type and timing of orthodontic and surgical treatment.
Our orthodontist at Orthomontreal Inc, Dr Thanh-De Nguyen and his team have a strong and over 16
years of experience in treating an extremely wide range of dental and orthodontic problems, such as
crooked teeth and jaws, of numerous and different biological origins, and will help you achieve the smile
and function you deserve.