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Findings of dark-field microscopic examination of calculus samples.
| Group A | Group B | ||||||
|---|---|---|---|---|---|---|---|
| Highly Mineralized | Moderately Mineralized | Less Mineralized | Gingivitis | Periodontitis | |||
| Total samples | 30 | 30 | 10 | 10 | 10 | 15 | 15 |
| Large in number and actively motile spirochaetes | 8 | 1 | 0 | 1 | 0 | 0 | 1 |
| Moderate in number and slowly motile spirochaetes | 21 | 3 | 1 | 3 | 0 | 0 | 3 |
| Scanty in number and sluggishly motile spirochaetes | 1 | 24 | 9 | 4 | 10 | 14 | 10 |
| No organisms | 0 | 2 | 0 | 2 | 0 | 0 | 1 |
