A NEW "TRINITY" MINI PLATE FOR MANDIBULAR OSTEOSYNTHESIS : AN IN VITRO STUDY

Dr. Venkatesh Balaji Hange, Dr. Shrey Srivastava

Abstract


The mandible is the largest and strongest facial bone, by virtue of its position on the face and its prominence; it is commonly fractured when
maxillofacial trauma has been sustained .(1)Mandibular fractures represent the second most common facial fractures after the nasal bone and
symphyseal/ parasymphyseal fracture comprises 15.6 to 29.3% of mandibular fractures (2).
Symphyseal fracture can be induced when a trauma is directed towards the symphyseal region where compressive strain develops along the buccal
aspect whereas tensile strain develops along the lingual aspect. This produces a fracture that begins in the lingual region and spreads toward the
buccal(3) Un-displaced, single and closed fractures are usually managed by closed method with maxillo-mandibular xation (MMF). Displaced
open and multiple fractures are treated by open reduction and internal xation (ORIF). Displaced, open and multiple fractures are treated by ORIF
by various methods like intraosseus wiring, miniplate osteosynthesis and reconstruction plate with bone graft.(4) Fixation by conventional S.S.
Mini plate carries high morbidity and infection rates .Where as the probable limitation of 3D plates may be excessive implant material(5) hence the
new design of mini plate has been developed in an attempt to overcome limitations of previous xation techniques and to acquire better retention as
well as stability.


Keywords


Biomechanics , Miniplate osteosynthesis ,Internal xation, Paresthesia of mental nerve ,Symphyseal , Miniaturized screwed plates.

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