Download canine impaction !!!!

1
*Note to youYOU CHOOSE WHICH TABLE U WANT AMONG THESE 2, I THINK THESE TABLES ARE BETTER,
COMBINED MALE AND FEMALE RATIOS
CONCLUSIONS
1. PDC cases showed significant sexual dimorphism in all parameters studied.
2. Delayed dental age was twice as prevalent in PDC males than in females.
3. Delayed dental age in males with PDC was associated with smaller teeth and higher frequency of
anomalous, especially peg-shaped, lateral incisors.
4. PDC males with NDA had dentitions more similar to the controls.
5. The dental parameters studied were not significantly different in the 2 dental age subgroups in females,
even though a slight increase in the prevalence of anomalous lateral incisors was associated with
delayed
development.
6. The lateral incisor was the only tooth significantly smaller in both boys and girls and in both dental age
subgroups than in the controls.
Conversely, the first premolar was exclusively affected in the LDA male subgroup.
2
CONCLUSION
ORs are superior to Pas for localization of IMCs.
Although an HTS between 2 ORs frequently is easier to interpret than a VTS between a PR and an OR,
this
about
all the teeth is
in usually
both arches,
the two jaws,
and theThis
surrounding
structures,
oftenprovides
taken as an initial
latter combination
the combination
of choice.
is because
the PR, is
which
radiograph,
information and this combination only requires one additional exposure, the OR. To facilitate the
interpretation
of a VTS the vertical angle of the x-ray tube in the OR should be increased from the usually
recommended
60°
to 65° to 70°
to 75°. of maxillary canine eruption usually is not necessary before 10 years of age,
Radiographic
supervision
however, palatal impaction is more likely to occur later if: (1) there is a family history of palatally IMCs and/or
small, peg-shaped, or missing lateral incisors and/or missing other teeth, or (2) the patient presents with
small, peg-shaped or missing lateral incisors. If the patient is over 10 years of age, impaction may have
occurred if the clinician notes one or more of the following: (1) asymmetry in palpation or a pronounced
difference in eruption of the canines; (2) the canines cannot be palpated and occlusal development is
advanced; (3) the lateral incisor is proclined and tipped distally; (4) there is an abnormality in the magnification
of the canine on the PR; (5) the lateral or central incisor is overlapped by the canine on the PR.
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WHEN TO SUSPECT IMPACTION
Ericson and Kurol14 found that radiographic supervision of maxillary canine eruption usually is not necessary
before 10 years of age.
Patients Younger than 10 Years of Age
The clinician should suspect that palatal impaction may occur in the future if either of the following
two situations exist:
(1) There is a family history of palatally IMCs in particular, but also small, peg-shaped, or missing lateral
incisors or other missing teeth; or
(2) the patient has small, pegshaped, or missing lateral incisors.
Patients Older than 10 Years of Age
The clinician should suspect that impaction may have occurred if any of the following three findings of
Ericson and Kurol exist.
1. Asymmetry in palpation or a pronounced difference in eruption of canines between the left and right
side, ie,
one canine is in a poor position and the other is in a favorable position;
2. The canines cannot be palpated and occlusal development is advanced suggesting an abnormal path
of eruption, ie, both canines are in poor position;
3. The lateral incisor is proclined and tipped distally, which may indicate a labial impaction of the canine.
Distal tipping alone was not associated with any eruption disturbance and may be the well-recognized
“ugly
duckling” stage of normal dental development.
Using these criteria, Ericson and Kurolfound that 8% of children over the age of 10 years required a
supplementary radiographic examination to determine whether the canine was impacted. This
radiographic
examination determined that only 1.5% of the canines were impacted.
3
CONCLUSIONS
The PDC has shown a significant reciprocal association with SSI. Both PDCb and PDCu are
significantly associated with bilateral small-sized upper lateral incisors.
PDCu exhibited a significant association with AI. PDCb was significantly associated with
aplasia of third molars.
The concurrence of other dental anomalies with PDC,significant differences in sex
distribution, and the high prevalence rate for PDCb confirm the genetic component in the
etiology for this tooth disturbance, at least for its bilateral form.
*Note to you-The short forms mentioned in conclusions are explained in this
section , just check !