Orthotown August 2018 - 36
Anchors
Aweigh
Microscrew-assisted
correction of
Class II malocclusion
in an adult patient
The correction of Class II
malocclusion in adult patients can
be challenging because of the complexity of dentition. Currently,
Class II malocclusion in adult patients is corrected by surgical mandibular advancement, by extraction of premolars or by using intraoral
distalizers. The surgical option is ideal for patients with retrognathic
mandible, while the extraction option is ideal for patients with severe
crowding and protrusion.1,2 The intraoral distalizers have been used
in some adult cases.3 In this report, we describe a nonextraction and
nonsurgical method of correcting Class II malocclusion in an adult
patient using microscrews.
Diagnosis
A 26-year-old patient was referred to the clinic by her general
dentist. Her chief complaint was, "I don't like my teeth." Clinical
exam showed severe crowding in maxillary and mandibular arches.
The dental arch forms were square in shape and her smile showed
dark corridors. She had dental Class II, Division 2 malocclusion with
impinging deep bite. The mandibular anterior teeth had worn out
incisal edges. The panoramic X-ray showed impacted third molars,
and cephalometric analysis showed a skeletal Class II relationship
with an ANB angle of 4.7 degrees, retrognathic mandible, normal
facial proportions, retroclined maxillary and mandibular anterior
teeth (Fig. 1).
36
JULY/AUGUST 2018 // orthotown.com
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