An Overview Prof. M. Lotfy, SOD, MOI...
Transcript of An Overview Prof. M. Lotfy, SOD, MOI...
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An Overview
Prof. M. Lotfy, SOD, MOI Univ.
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Facial Injuries• Facial injuries impact both function and esthetics.
• There is often a psychological aspect associated
with the injury secondary to patient’s concern
regarding permanent scarring and subsequent facial
disfigurement.
• According to a recent survey, cosmetic outcome is
the single most important aspect of care to the patient.
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Maxillofacial injuries Soft tissues injuries
Dental and alveolar bone injuries
Fractures of Facial Bones
Mandibular Fracture
Middle Third Facial Fractures
Maxillary Fracture
Zygomatic Fracture
Multiple Facial Fractures (Panfacial Fracture)
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The mandible is the second most commonly fractured part of the maxillofacial skeleton because of its position and prominence.
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Classification According to exposure
Simple (Closed)
Compound (Open)
According to # of fracture lines
Single
Multiple
Comminuted
According to location of the fracture line
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Signs & Symptoms Signs
Malocclusion
Dysfunction
Mobility of fragments
Crepitation
Ecchymosis
Patient with significant lower face ecchymosis and asymmetry as a result of a symphysis fracture, bilateral subcondylarfractures, and a Le Fort I fracture resulting from a direct impact to the chin during a fall
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Symptoms
Pain
Tenderness
Disability
Deformity
Swelling
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Goals of Treatment
1. Obtain stable occlusion.
2. Restore interincisal opening and mandibular excursive movements.
3. Establish a full range of mandibular excursive movements.
4. Minimize deviation of the mandible.
5. Produce a pain-free articular apparatus at rest and during function.
6. Avoid internal derangement of the temporomandibularjoint on the injured or the contralateral side.
7. Avoid the long-term complication of growth disturbance.
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Steps of Treatment Reduction Closed
Open
Gradual
Fixation Non-rigid
Semi-rigid
Rigid
Immobilization
Rehabilitation
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Case PresentationsCase ISubcondylar & Parasymphysial Fr
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Case PresentationsCase IIBody & Angle Fr
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Result in•Pain•Dysfunction•Deformity
May be Associated with:•Facial Nerve Injury•Spine injury•Displacement into M Cr Fossa•Ext Auditary Canal Injury•Occlusion of the ICA
A thorough understanding of the anatomy and physiology of the masticatory system is therefore essential in understanding and treating fractures of the condylar/subcondylar region
Condyle is a major GROWTH CENTER (Mandible + Facial Skeleton)
Damage to the condyle – early in life – result in panfacial deformities
Condylar Fracture
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Presentation and Diagnosis
Pain on mandibular movements with or without soft tissue swelling
Restriction of mandibular movement
Deviation of mandibular movement (to affected side)
Alteration of occlusion
Laceration of the anterior wall of the external auditory meatus or blood on the external auditory canal
Disturbed function of the facial nerve
Clinical Diagnostic Criteria
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Axial CT for an 18-years-old male who reported pain and discomfort following blunt trauma to the face. The patient was otherwise normal. Plain radiograph was normal. Axial CT shows intracapsular fracture of the right condyle with minimal displacement. This type of fracture should be treated with closed method with early mobilization to prevent ankylosis
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46-years-old male with untreated telescoped Lt SC Fr resulting in:
• laterognathia• increase laterognathia on open
OPG shows lateral over-riding of condylar and ramus fracture segments
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Shift of the mandibular midline toward the fracture side
Shift increase when the patient open his/her mouth
Laceration of the ant wall of the ext. auditory meatus or
Blood in the external auditory canal
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Two of the clinical signs suggesting of possible condylar injury:
• chin trauma or laceration• malocclusion
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Bilateral SC Fr result in anterior open bite (apertognethia)
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An 16 years old young adult male reported pain and dysfunction for 4 days. His discomfort started after he fall during sport practice. Clinical examination revealed slight malocclusion.Panoramic radiograph revealed fracture involving right sub-condylar region with no displacement
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Significant mandibular hypoplasia in a 12-year-old boy, resulting from bilateral intracapsular condylar fractures suffered shortly after birth.
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Le Fort ClassificationI. Low level fractureII. Pyramidal fractureIII. Craniofacial Dislocation
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A. When the maxilla is examined for fracture the head is stabilized and the dentoalveolar process is manipulated so that gross movements of fractured segments can be detected.
B. Checking for Le Fort II or III fractures requires that one hand holds the bridge of the nose while the other manipulates the maxilla.
C. Movement at the nasofrontal suture suggests a Le Fort II or III fracture.
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Clinical images showing a case of Lefort I fracture with comminuted left sideThe use of disimpaction forceps was necessary to mobilize and reduce the maxilla which was fixed using bone miniplates
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Gillies’s approach to reduce zygomatic arch fracture.
1. Temporal incision through subcutaneous and superficial fascia down to the deep temporal fascia.
2. Reduction of fracture with elevator