The ideal clinical conditions of teeth which we know already include:

- the absence of pain.

- less than 0.1 mm initial hori-ontal mobility under lateral forces of less than 100 g.

- less than 0.15 secondary mobility with lateral forces of 500 g.

- absence of observed vertical mobility.

- periodontal probing depths of less than 2.5 mm.

- radiographic crestal bone height 1.5 to 2 mm below the cemento-enamel junction.

- intact lamina dura.

- no bleeding on probing.

- no exudates.

- absence of recession and furcation involvement in multirooted teeth.