understanding the genium...2018/12/12 · dr. ashish fanan mds dr. avnipandey mds gsr institute of...
TRANSCRIPT
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Symphyseal AestheticsUnderstanding the
GeniumProf. Dr. Dr. Srinivas Gosla Reddy
MBBS MDS FDSRCS (Edin.) FDSRCS (Eng.) PhD
Dr. Dr. Rajgopal Reddy MBBS BDS FDSRCPS (Glasg)
Dr. Ashish Fanan MDS
Dr. Avni Pandey MDS
GSR Institute of Craniofacial Surgery, Hyderabad India
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• Non-profit hospital established in1996
• Dedicated Cleft & CraniofacialCentre of Excellence
• Presently 1,600 cleft and cranio-facial surgeries are done every year
• 3 surgeons and 4 fellows with fullsupport team
• More than 30,000 documented cleft& craniofacial surgeries have beenperformed since 1996
• 600 primary new born cleft childrenare registered every year
GSR Institute of Facial Plastic Surgery
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Genium
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GeniumAnatomical Considerations
Roots of the anterior mandibular teeth
Mental Foramina and nerve
Anterior Belly of Digastric Muscle
Genioglossus Muscle
Geniohyoid Muscle
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GeniumStrong vs. Weak Jawline
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GeniumWhy do a genioplasty?
• Protruded Chin???
• Retruded Chin
• Deepening of Labiomental Groove caused by VerticalShortening of the anterior lower third of face
• Asymmetric Jawline
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GeniumAlways ask….
• Is the genium alone the problem?- Look at facial balance
- Look at occlusion
In most patients the chin is not the only part of the face that is not harmonious
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Incision
‘Crown’/Mommaert’s incision is given to avoid vestibular shortening and tension free closure.
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Bone Cuts
Bone cuts can be given in such a way to move the genium- Anteriorly - Posteriorly- Inferiorly - Superiorly- Laterally - Propellar
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Fixation
Fixation is preferably done with 2.0 mm lag screws
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Genioplasty (Anterior movement for correcting retruded chin)
One Piece Osteotomy
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Genioplasty (Anterior movement for correcting retruded chin)
One Piece Osteotomy
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www.craniofacialinstitute.orgTwo Piece Osteotomy
Genioplasty (Anterior movement for correcting retruded chin)
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Genioplasty (Inferior movement for correcting vertical shortening)
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Genioplasty (Superior movement for correcting vertical excess)
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Propeller Genioplasty for correcting asymmetric jawline
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Propellar Genioplasty
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Propellar Genioplasty (Asymmetric Jawline)
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Rhinoplasty + Genioplasty
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Rhinoplasty + Genioplasty
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GeniumComplications
• “Witching” phenomenon
Due to improper vestibular incision design
• Paresthesia
Due to compression or severing of Mental nerve.
Can be avoided by using Piezo Electric Saw
• Relapse
Due to extreme movements of the genium and improper fixation
• Necrosis
Due to excessive stripping of muscles and periosteum
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Bring the Smile Back
Thank You
Slide Number 1Slide Number 2Slide Number 3Slide Number 4Slide Number 5Slide Number 6Slide Number 7Incision Bone Cuts Fixation Slide Number 11Slide Number 12Slide Number 13Slide Number 14Slide Number 15Slide Number 16Slide Number 17Slide Number 18Slide Number 19Slide Number 20Slide Number 21Slide Number 22