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Questions and Answers
Mandibular excess is always associated with a Class II molar and canine relationship.
True
Mandibular deficiency is characterized by a retruded chin and an everted lower lip.
True
Mandibular excess and maxillary excess can occur simultaneously, leading to a normal facial profile.
False
Mandibular asymmetry is caused by excessive growth of both condyles.
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Mandibular asymmetry can occur in individuals without the presence of malocclusion.
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Mandibular deficiency is associated with an increased overjet in the incisor area.
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The long face syndrome is characterized by an excessive appearance of the lower third of the face.
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The short face syndrome is associated with a decreased mandibular occlusal plane angle.
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Apertognathia, or open bite, is characterized by premature anterior occlusion with the absence of posterior occlusion.
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The long face syndrome is often accompanied by lower facial asymmetry.
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The three basic facial types are brachyfacial (short facial type), dolichofacial (long facial type), and mesofacial (ideal facial type).
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The presurgical treatment phase includes periodontal, restorative, and orthodontic considerations, as well as final treatment planning.
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Le Fort I osteotomy is used to correct deformities involving both the maxilla and mandible simultaneously.
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In cases of severe maxillary and mandibular discrepancies, a combination of Le Fort I osteotomy and mandibular surgery may be performed.
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Le Fort II osteotomy is designed to move the entire face forward, including portions of the eye socket, but does not involve the mandible.
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In cases of cleft palate, only Le Fort I osteotomy is performed, without any mandibular surgery.
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Le Fort III osteotomy, also known as craniofacial disjunction, is used to correct deformities involving both the maxilla and mandible simultaneously.
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