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Overview :
The Sulcus Bleeding Index (SBI) can be used to assess a
patient for gingivitis, which can be important in the prevention of periodontal
disease. This was initially called the "PM Index", but the name was changed to
prevent confusion with the "PMA Index".
Number of teeth examined: 16 (the anterior 4 in each
quadrant, 2 on maxilla and 2 on mandible)
Teeth in each quadrant:
(1) medial incisor
(2) lateral incisor
(3) cuspid
(4) first premolar
4 surfaces on each tooth are probed:
(1) M labial
(2) M lingual
(3) P mesial
(4) P distal
Total number of readings: 64
Each surface is examined grossly for color and swelling, then
a probe is gently placed in the sulcus to see if bleeding occurs.
|
Appearance |
Sulcus
Probing |
Points |
|
healthy |
no bleeding |
0 |
|
apparently healthy with no change in color and no
swelling |
bleeding on probing |
1 |
|
change in color due to inflammation; no swelling or
macroscopic edema |
bleeding on probing |
2 |
|
change in color due to inflammation; slight edematous
swelling |
bleeding on probing |
3 |
|
obvious swelling |
bleeding on probing |
4 |
|
spontaneous bleeding; changes in color; marked swelling
with or without ulceration |
bleeding on probing |
5 |
Interpretation:
• The total
number of surfaces showing each of the scores (0 to 5) is used to evaluate the
distribution of changes associated with gingivitis.
• minimum sum of all SBI scores: 0
• maximum sum of all SBI scores: 320
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