Habito de bruxar producido poor el estres que ocurre usualmente al momento de dormir.

1. Bruxismo

2. • Bruxism: An oral habit consisting of involuntary rhyth- mic or
spasmodic nonfunctional gnashing, grinding, or clenching of teeth, in
other than chewing movements of the mandible, which may lead to
occlusal trauma.

3. CENTRIC BRUXISM
• Strong clenching of the teeth can be a normal manifestation of
increased muscle tonus associated with emotional stress. It also
occurs during heavy lifting or other physical demands. Abnormal
clenching that occurs when there is no physical or emotional trigger is
a form of bruxism centric bruxism. Habitual clenching usually does
not involve noticeable jaw movement, but teeth with deflective
premature contacts may be moved or loosened by repeated clenching
activity. Patients are rarely aware of their own clenching habit.

4. ECCENTRIC BRUXISM
• Eccentric bruxism refers to nonfunctional grinding of the lower teeth
against the upper teeth in excursive pathways. If uncontrolled, it
generally leads to severe attritional wear of the occlusal surfaces or
hypermobility of the teeth and may also contribute to adaptive
changes in the TMJs, resulting in flattening of the condyles and
gradual loss of convexity of the eminentiae. In severe bruxers, the
masseter muscles are often enlarged, sometimes to the point of
noticeable changes in facial contour.

5. Etiología
• The cause of eccentric bruxism is not completely clear. Although
considerable light has been shed on the problem, there are enough
unexplained observations to indicate there is still much to learn. One
thing seems certain: There is no single factor that is responsible for all
bruxing. It is also rather evident that there is no single treatment that
is effective for eliminating or even reducing all bruxing.

6. TREATING THE BRUXISM PROBLEM
• Despite the controversy that still clouds the cause of bruxism, it is
rather clear that habitual elevator muscle hypercontraction has the
potential for severe overload on the teeth, the supporting structures,
and the TMJs. In the presence of such an overload, damage to some
part of the system is almost inevitable. The destructive effects can be
reduced by distribution of the load to the maximum number of
equalintensity tooth contacts during intercuspation. Harmonizing
those contacts with centrically related condyles reduces the overload
on both the teeth and the joint structures and eliminates the trigger
for incoordinated lateral pterygoid contraction.

7. Direct Occlusal Correction
• Before alteration of an occlusion is accomplished directly, a careful
analysis should be made on mounted diagnostic casts. If it can be
determined that the corrections can be made with selective grinding
without mutilation of enamel surfaces, equilibration is most often the
method of choice. If restoration of posterior teeth will be needed for
other reasons, equilibration procedures can be used to correct the
occlusion directly even if some enamel penetration is necessary.

8. Using Appliances
• If occlusal splints are prescribed, complete occlusal coverage should
be used to perfect equal intensity centric stops on all teeth against
the splint and immediate disclusion of all posterior teeth the moment
the mandible leaves centric relation.

9. Stopping the Bruxism HabitWhen the
Occlusion Is Worn Flat.
• The most difficult bruxism problem to be faced is the patient who has
worn the entire occlusion flat and has shortened the anterior teeth
into an end-to-end relationship. The effect of bruxism is easy to
eliminate if the flat anterior guidance can be maintained, but often
such a patient wishes to have the anterior esthetics improved.

10. Masticatory System Dysfunctionand Psychic
Stress
• Various dysfunctional patterns in the masticatory system are often
cited as a cause of bruxism. These dysfunctional patterns are also
explained as resulting from psychic stress as the primary etiology of
the dysfunction and thus the cause of the bruxism.