On the infra-zygomatic crest
An L-shaped incision is made with anterior convexity. The vertical part of the incision (1) is made ± 1cm mesial from and parallel to the infra-zygomatic crest and up to 2mm below the muco-gingival boarder. The incision is extended distally (2) with a horizontal incision 2mm below and parallel to the muco-gingival boarder.

A posterior based mucoperiosteal flap is made for bone exposure.
The miniplate is slightly bended to obtain good contact to the cortical bone. The bending should be limited to the region between the holes (1) in the mini plate. The connection between the miniplate and the neck should be slightly bended in the opposite direction (2) to ensure good contact between the lower part of the neck and the alveolar bone (3).
The device is positioned so that the round connecting bar of the neck penetrates the soft tissues exactly at the angle of the L-shaped incision 2mm below the muco-gingival boarder. The centre of the holes in the miniplate should be on top of the infra-zygomatic crest. A first hole with a diameter of 1.65mm is drilled through the middle hole of the miniplate.
The first screw is not completely fixed in order to allow some rotation of the miniplate. The lower hole is drilled and the screw is inserted, followed by the upper one and all are fixed for a strong stable retention.

After rinsing with saline solution, closure is obtained in one plane with 4/0 resorbable sutures. The mucoperiosteal flap is positioned by the first suture just anterior from the neck of the bone anchor. Additional sutures are placed until good closure is obtained. The fixation unit should be oriented parallel to the alveolar bone with the blocking screw facing to the front. |