dental-maxillofacial deformities
DESCRIPTION
Dental-maxillofacial Deformities. Dept. of Oral & Maxillofacial Surgery School of Stomatology LI Qing-yun. Phase I. Presurgical treatment. Orthodontics Surgical plan. Phase II. Surgical treatment. Mandible Maxilla. Phase III. Postsurgical treatment. Orthodontics - PowerPoint PPT PresentationTRANSCRIPT
Dental-maxillofacial DeformitiesDental-maxillofacial DeformitiesDental-maxillofacial DeformitiesDental-maxillofacial Deformities
Dept. of Oral & Maxillofacial SurgeryDept. of Oral & Maxillofacial Surgery
School of StomatologySchool of Stomatology
LI Qing-yunLI Qing-yun
Dept. of Oral & Maxillofacial SurgeryDept. of Oral & Maxillofacial Surgery
School of StomatologySchool of Stomatology
LI Qing-yunLI Qing-yun
Phase IPhase IPhase IPhase I Presurgical treatmentPresurgical treatment
• Orthodontics• Surgical plan
• Orthodontics• Surgical plan
Phase IIPhase IIPhase IIPhase II Surgical treatmentSurgical treatment
• Mandible• Maxilla
• Mandible• Maxilla
Phase IIIPhase IIIPhase IIIPhase III Postsurgical treatmentPostsurgical treatment
• Orthodontics• restorative/prosthetic treatment• follow-up
• Orthodontics• restorative/prosthetic treatment• follow-up
Presurgical Treatment PhasePresurgical Treatment Phase
Presurgical orthodontics
Final surgical planning
Presurgical orthodontics
Final surgical planning
Presurgical Treatment PhasePresurgical Treatment Phase
Objectives —— Presurgical orthodontics Objectives —— Presurgical orthodontics
Decompensation
dental compensation for skeletal deformity
angulation of teeth
accentuate the deformity
Decompensation
dental compensation for skeletal deformity
angulation of teeth
accentuate the deformity
Objectives —— Presurgical orthodontics Objectives —— Presurgical orthodontics Alignment of the arches Compatibility of the arches
Alignment of the arches Compatibility of the arches
Final Surgical Planning Final Surgical Planning Visual Treatment Objective, VTO Visual Treatment Objective, VTO
Final Surgical Planning
Computerized imaging CASSOS
Final Surgical Planning Final Surgical Planning
Model Surgery Model Surgery
Exact surgical movements
(distance, direction)
Postoperative occlusion
Exact surgical movements
(distance, direction)
Postoperative occlusion
articulatorarticulator
Face-bowFace-bow
Surgical Treatment PhaseSurgical Treatment Phase
Surgeries for maxillary deformity
Surgeries for mandibular deformity
Surgeries for maxillary deformity
Surgeries for mandibular deformity
Surgeries for maxillary deformitySurgeries for maxillary deformity
Segmental osteotomy (Anterior / Posterior) Segmental osteotomy (Anterior / Posterior)
Indications:
- maxillary protrusion
- marked protrusion of
maxillary teeth
- open bite
Indications:
- maxillary protrusion
- marked protrusion of
maxillary teeth
- open bite
Surgeries for maxillary deformitySurgeries for maxillary deformity
Le Fort I osteotomy
(total or segmental)
Le Fort I osteotomy
(total or segmental)
Indications:
- maxillary deformities
- mandibular deformities
Indications:
- maxillary deformities
- mandibular deformities
Surgeries for maxillary deformitySurgeries for maxillary deformity
Le Fort I osteotomy Le Fort I osteotomy
Le Fort II or III osteotomy Le Fort II or III osteotomy
Indications:
- midface deficiency
Indications:
- midface deficiency
SNA 88°
SNB 92°
ANB 4°
SNA 88°
SNB 92°
ANB 4°
Surgeries for mandibular deformitySurgeries for mandibular deformity
Sagittal split ramus osteotomy,
SSRO
Sagittal split ramus osteotomy,
SSRO
Indications:
- mandibular excess
- mandibular deficiency
- mandibular asymmetry
Indications:
- mandibular excess
- mandibular deficiency
- mandibular asymmetry
AdAdbackback
rotaterotate
Surgeries for mandibular deformitySurgeries for mandibular deformity
Vertical ramus osteotomy Vertical ramus osteotomy
Indications:
- mandibular excess
- mandibular asymmetry
(combined with SSRO)
Indications:
- mandibular excess
- mandibular asymmetry
(combined with SSRO)
backback
Surgeries for mandibular deformitySurgeries for mandibular deformity
Subapical osteotomy Subapical osteotomy
Indications:
- bimaxillary protrusion / open bite
- leveling the plane of occlusion
- uprighting anterior teeth
Indications:
- bimaxillary protrusion / open bite
- leveling the plane of occlusion
- uprighting anterior teeth
Surgeries for mandibular deformitySurgeries for mandibular deformity
Body osteotomy Body osteotomy
Indications:
- mandibular excess (body)
combined with ramus procedure or not
- open bite / spee’s curve reduction
Indications:
- mandibular excess (body)
combined with ramus procedure or not
- open bite / spee’s curve reduction
Surgeries for mandibular deformitySurgeries for mandibular deformity
genioplasty genioplasty
Indications:
- chin deformities
Indications:
- chin deformities
Perioperative complicationsPerioperative complications
Airway obstruction
edema / bleeding / displacement… …
Bleeding
Infection
Necrosis of teeth / bone
Healing
Injury of nerve
Airway obstruction
edema / bleeding / displacement… …
Bleeding
Infection
Necrosis of teeth / bone
Healing
Injury of nerve
Postsurgical Treatment PhasePostsurgical Treatment Phase Completion of orthodontics
Postsurgical restorative/prosthetic treatment
Follow-up
Completion of orthodontics
Postsurgical restorative/prosthetic treatment
Follow-up
SNA 88°
SNB 81°
ANB 7°
SNA 88°
SNB 81°
ANB 7°
SNA 84°
SNB 81°
ANB 3°
SNA 84°
SNB 81°
ANB 3°
SNA 88°
SNB 92°
ANB -4°
SNA 88°
SNB 92°
ANB -4°
SNA 88°
SNB 86°
ANB 2°
SNA 88°
SNB 86°
ANB 2°
SNA 88°
SNB 86°
ANB 2°
SNA 88°
SNB 86°
ANB 2°
