Decoding Mandibular Angle Fracture Management: Biomechanical Analysis of Different Plating Techniques - An In Vitro...

Area of Science:

• Biomechanical Engineering
• Oral and Maxillofacial Surgery
• Dental Research

Background:

• Mandibular angle fractures are common and require stable fixation for optimal healing.
• Various plating systems exist, but their biomechanical stability varies.
• Understanding the biomechanical properties of different plating systems is crucial for effective fracture management.

Purpose of the Study:

• To compare the biomechanical stability of four different plating systems for mandible angle fractures.
• To evaluate the performance of Champy's, monoplanar, biplanar, and 3D strut plating systems under simulated masticatory loads.

Main Methods:

• An in vitro study utilizing 32 goat mandibles.
• Mandibles were hemi-sectioned and divided into four groups, each receiving a different plating technique.
• A custom biomechanical testing machine applied compressive forces simulating mastication, with force-displacement data recorded.

Main Results:

• Plating techniques using two plates demonstrated greater resistance to displacement than single-plate techniques.
• The 3D curved angle strut plate exhibited the highest mean compressive strength (184.79 N), followed by biplanar (170.29 N), monoplanar (159.34 N), and Champy's (55.48 N).
• Significant differences were observed between 3D strut and Champy's plating (P ≤ 0.0016) and between biplanar and Champy's plating (P ≤ 0.0010).

Conclusions:

• The 3D curved angle strut plate and biplanar plating techniques offer superior biomechanical performance.
• These systems provide better stability compared to monoplanar and Champy's plating techniques for mandible angle fracture management.