Intervention Name: Two Standard plat titanium system . Intervention Type: Device

Assigned Intervention:

Fixation using two titanium miniplates. The first plate is placed at the inferior border of the mandible from the buccal side, fixed with bicortical screws engaging both cortices. The second plate is positioned ~5 mm superior or at the external oblique ridge, fixed with monocortical screws to avoid dental root injury.

Intervention Name: 3D Titanium Miniplate (2.0 mm, 8-hole) Intervention Type: Device

Assigned Intervention:

Fixation with a single rectangular 2.0 mm 9-hole 3D titanium miniplate. Two diagonally opposite monocortical screws placed first, followed by the remaining two. The plate is contoured with crossbars perpendicular and struts parallel to the fracture line. The upper crossbar is positioned subapically. Fixation is on the lateral cortex or external oblique ridge with proper adaptation.

Fixation using two titanium miniplates. One plate at the inferior border of the mandible with bicortical screws. Second plate ~5 mm above or at the external oblique ridge with monocortical screws.

use bite force measurement device . make patient bite to muser the force (, newton unit).

Ask the patient to open their mouth as wide as possible without feeling pain.

Using a ruler or caliper, measure the vertical distance between the incisal edge of the upper central incisor and the incisal edge of the lower central incisor