02. Osteotomy alveolar crest.

The lateral radiograph gives an preliminary impression of the necessary level of alveolar ridgehorizontal osteotomy to achieve a satisfactory minimal width on top of alveolar crest. Allow at least 1-2 mm marginal bone wall facial/lingual to the implant.

The space of the residual crest and mandible allowed a transgingival implant with surgical diameter 4.0 mm and length 15 mm-18mm.

In this case the height of the residual crest of the symphysis area is reduced with 3 mm, reducing the level of osteotomy toward the mental foraminal region. The osteotomy is carried out by the use of a diamond coated rotating disc and finished up with sharp straight chisel. The removed bone is preserved into sterile saline.