Description

The Gingival Index (GI) was developed by Loe and Silness to describe the clinical severity of gingival inflammation as well as its location.


 

Appearance

Bleeding

Inflammation

Points

normal

no bleeding

none

0

slight change in color and mild edema with slight change in texture

no bleeding

mild

1

redness, hypertrophy, edema and glazing

bleeding on probing/pressure

moderate

2

marked redness, hypertrophy, edema, ulceration

spontaneous bleeding

severe

3

 

Teeth examined:

(1) maxillary right first molar

(2) maxillary right lateral incisor

(3) maxillary left first bicuspid

(4) mandibular left first molar

(5) mandibular left lateral incisor

(6) mandibular right first bicuspid

 

Surfaces examined on each tooth:

(1) buccal

(2) lingual

(3) mesial

(4) distal

 

Gingival Index for a specific tooth =

= AVERAGE (points for the 4 surfaces)

 

Gingival Index for type of tooth (first molar, first bicuspid, lateral incisor) =

= AVERAGE (Gingival Indices for the 2 teeth)

 

gingival index for patient =

= AVERAGE (Gingival Indices for all 6 teeth)

Average Gingival Index

Interpretation

2.1 - 3.0

severe inflammation

1.1 - 2.0

moderate inflammation

0.1 - 1.0

mild inflammation

< 0.1

no inflammation

 

Limitations:

• Several subsequent modifications were made to better describe milder forms of inflammation or to eliminate the need to perform probing.

 


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