2017, Number 2
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Rev Mex Ortodon 2017; 5 (2)
Correction of an skeletal anterior open bite with mini-screws and a modifi ed bite block
Miranda SÁE, Sánchez VA
Language: Spanish
References: 27
Page: 107-115
PDF size: 696.20 Kb.
ABSTRACT
Skeletal anterior open bite may be treated with mini-screws since
they provide an absolute anchorage to correct it through maxillary
molar intrusion. With an adequate control a bite block was used
in this case to help correct the malocclusion.
Case report: A 15
year-old male dolichofacial patient with an Angle class II division 1
malocclusion, a -4.5 mm anterior open bite and incompetent lips is
hereby presented. Etiology: reduced anterior upper facial height. The
treatment goal was to obtain a normal anterior overbite decreasing
the posterior maxillary dentoalveolar height. Orthognathic surgery
was indicated but the patient refused it. So the treatment consisted
in two mini-screws implanted on the palatal side and a modified
fixed bite block, activated with elastomeric chains.
Results: A molar
intrusion of 2 mm was achieved; the anterior overbite changed to
+2 mm, a mandibular counterclockwise rotation took place and the
facial profile was improved.
Conclusions: The anterior open bite
was corrected with a good control during molar intrusion and without
buccal tipping.
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