Table 1.

Implant placement in edentulous sites Garber classification [22], [23].

Class I	Favorable horizontal and vertical levels of both soft tissue and bone
Class II	Sites with no vertical bone loss and slight horizontal bone deficiency measuring about 1–2 mm narrower than normal
Class III	Sites with no vertical bone loss and horizontal bone loss greater than Class II
Class IV	Sites with no vertical bone loss but significant horizontal loss
Class V	Sites with extensive apicocoronal bone loss present