20.11.04 facial asymmetr yfinal
TRANSCRIPT
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FACIAL ASYMMETRY
• Dr V.RAMKUMAR
• CONSULTANT DENTAL &FACIOMAXILLARY SURGEON
• REG NO: 4118 –TAMILNADU- INDIA(ASIA)
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Abnormal skeletal anatomy may be
described simply in forms of maxillary and
mandibular morphology, which may or may not
be further complicated by associated
abnormalities in other parts of the skull.
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Facial Asymmetry can occur in three planes
Sagittal or Anteroposterior
Vertical
Transverse
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ETIOLOGY
Genetic (Piere robinsyndrome)
Trauma (Ankylosis)
Congenital and developmental (Condylar agenesis)
Acquired (Stills disease)
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LEVELS OF THE FACE
Cranial (upperthird)
Maxillary (Middlethird)
Mandibular (Lowerthird)
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CLASSIFICATION OF FACIAL ASYMMETRY
Symmetrical disproportion of jaws
Asymmetrical disproportion of jaws
Mandibular lower facial enlargement
Mandibular lower facial deficiency
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Maxillary enlargement
Maxillary deficiency
Cleft lip and palate syndrome
Craniofacial asymmetry
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MAXILLARY DEFICIENCY
Naso maxillary hypoplasia
Total midface hypoplasia
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MAXILLARY ENLARGEMENT
Dentoalveolar Enlargement
Class II Div.I
Premaxillary enlargement (Pagets disease)
Vertical maxillary excess (Long face syndrome)
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MANDIBULAR LOWER FACIAL ENLARGEMENT
Progeria
Vertical mandibular excess
Sagittal mandibular excess
Bilateral massetric hypertrophy
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MANDIBULAR LOWER FACIAL DEFICIENCY
Microgenia and Retrogenia
Low angle (AP growth and transverse growth are affected)
High angle (The growth is more vertical than horizontal)
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NASO MAXILLARY HYPOPLASIA
Group 1. Involving dento alveolar segment (Short columella)
Group 2. Excluding dento alveolar segment (Binders syndrome, short cranial base)
Group 3. Cleft palate syndrome (Short nose)
Group 4. Panfacial problems
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TOTAL MIDFACE HYPOPLASIA
It affects the whole midface including orbital walls zygomatic region without cranial mal formation.
Crouzon syndrome
Aperts syndrome
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INVESTIGATION
WELL ORIENTED PHOTOGRAPHS
Radiographs
Posterior and lateral cephalograms
Model analysis
Arch alignment
Occlusion
Model surgery
Photocephalometry
Sterio lithography
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TREATMENT OPTIONS Maxilla
Anterior maxillary osteotomy
Posterior maxillary osteotomy
Lefort I osteotomy and its modification
Lefort II osteotomy and its modification
Lefort III osteotomy and its modification
Quadrangular osteotomy
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ANTERIOR MAXILLARY OSTEOTOMY
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LEFORT I OSTEOTOMY
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LEFORT II OSTEOTOMY
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LEFORT III OSTEOTOMY
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TREATMENT OPTIONS MANDIBLE
Subapical osteotomy
Genioplasty and its variations
Sagittal spilit osteotomy
Subsigmoid osteotomy
C osteotomy
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GENIOPLASTY
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SAGITTAL SPLIT OSTEOTOMY
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Thank U