MAXILLOFACIAL INJURIES
TRAUMA: PHYSICAL FORCE RESULTS IN INJURY
F = mv
2
ETIOLOGY
•ASSAULTS
•FALL
•INDUSTRIAL ACCIDENTS
•RTA
•SPORTS INJURIES
•WAR INJURIES
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
SERIOUS TRAUMA: DEATH
TRIMODAL DISTRIBUTION
•SECONDS TO MINUTES
•MINUTES TO HOURS
(GOLDEN HOUR)
•AFTER DAYS
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Classification
-Anatomical location
-Relation to site of injury
-Condition of fracture fragments
-Type of displacement (angle)
-# with reference to dentition
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Classification
-Anatomical location
-Relation to site of injury
-Condition of fracture fragments
-Type of displacement (angle)
-# with reference to dentition
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Classification
Relation to site of injury
-Direct
-Indirect
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Classification
-Anatomical location
-Relation to site of injury
-Condition of fracture fragments
-Type of displacement (angle)
-# with reference to dentition
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Classification
Condition of fractured fragments
Green Stick
Simple
Compound
Comminuted
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Classification
-Anatomical location
-Relation to site of injury
-Condition of fracture fragments
-Type of displacement (angle)
-# with reference to dentition
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Classification: type of displacement
Angle of mandible
Extraoral:Gonion
Intraoral: Junction of alveolar
bone and ramus
Fracture of angle mandible
Greater fragment :teeth bearing segment
Lesser fragment: ramus
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Classification
Type of displacement (angle)
favorable / unfavorable
horizontal -vertical
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Classificaton
Fracture angle of mandible
Displacement of Ramus
(post edentulous fragment)
Favorable: Minimal displacement
Unfavorable: Gross displacement
Viewed from side: Horizontal
Viewed from above: Vertical
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Classification
-Anatomical location
-Relation to site of injury
-Condition of fracture fragments
-Type of displacement (angle)
-# with reference to dentition
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Classification
# with reference to dentition
Dentulous
Child
Adult
Edentulous
Dentulous jaw with a posterior
edentulous fragment
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Classification
Kazanzian & Converse
Class I Teeth on both segments
Class II teeth on one segment
Class III Edentulous
Rowe & Killey
#s involving the basal bone
#s not involving the basal bone
favorable / unfavorable
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Radiographic features
OPG / Lateral oblique
P A mandible
Intra oral occlusal view
Confirms
Site and severity of #
Direction & displacement of #
Condition of teeth in line of #
Presence of bony pathology
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Management
Objectives
RESTORE FORM & FUNCTION
Remember A B C D E
Precise diagnosis
Early reduction
Adequate fixation and immobilization
Rehabilitation / restoration of function
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Management
REDUCTION Closed
Advantages
No need for a G.A
Can be used in comminuted #
Continuity defects
( gun shot injuries)
Disadvantages
Accuracy of reduction ambiguous
Poor fracture alignment
Inadequate reduction
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Management
REDUCTION Open
Exposure of fracture skin / mucosa
Direct reduction and fixation
Transoseous Wiring
Plate & Screw Osteosynthesis
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Management
Open REDUCTION
Plate & Screw Osteosynthesis
(Titanium/Stainless steel)
Compression plates
Mini plates
Lag Screw
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Management
REDUCTION Open
Advantages
Accurate reduction &
fixation
Alignment under direct
visualization
Disadvantages
Need for a G.A & Hospitalization
Expenses !!!
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Management
Open REDUCTION
Miniplate Osteosynthesis (Champy)
Small malleable plate( 2 -2.5 mm thickness)
Trans oral approach
No post op IMF
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Management
OPEN REDUCTION MiniplateOsteosynthesis
Symphysis/Parasymphysis/body/angle
Eyelets / Arch bars Temp IMF
Intraoral Approach
Exposure of fracture site(s)
GK / MAXFAC
SDM DHARWAD
Curettage (haematoma)
Reduction of Fracture
Temporary Immobilization
(IMF)
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Management
OPEN REDUCTION MiniplateOsteosynthesis
Clinical applications
Mini plate application & fixation
Debridement & removal of IMF
Recheck occlusion & Closure
GK / MAXFAC
SDM DHARWAD
MAXILLOFACIAL INJURIES
MANDIBULAR FRACTURES
Management
Edentulous mandibles
Mostly simple #s
Usually heals with out complications
Displacement of # fragments variable
Classification(Luhr et al)
according to height of bone
Class 1 : 16 -20mm
Class2 : 11-15mm
Class3 : less than 10mm
GK / MAXFAC
SDM DHARWAD