Position , number and angulation of implant

Position of the Implant

   Depends on bone quality & quantity

   Minimum distance between implant & adjacent natural tooth: 5mm

   Minimum distance between two adjacent implants from their centres:7mm

Number of Implants

Ø Depends on

a)  Bone available

b)  Span length

c)   Occlusion

d)  Type of prosthesis

Ø Increasing the number of implants decreases the force per implant

Implant Angulation

   Implants may have to be angulated rather than along the long axis of the missing tooth when:

Ø Position, quality & dimension of bone is not ideal

Ø To avoid unaesthetic proclination of anteriors

Ø Multiple implants