| BCG-PSN | Bacillus Calmette-Guerin polysaccharide nucleic acid |
| CPI | Community periodontal index |
| EOLP | Erosive oral lichen planus |
| HA | Hyaluronic acid |
| OLP | Oral lichen planus |
| PI | Plaque index |
| PRF | Platelet-rich fibrin |
| PRP | Platelet-rich plasma |
| TA | Triamcinolone acetonide |
| TAC | Tacrolimus |
| REU | Reticular, erosive, and ulcerative lesions scoring system |
| VAS | Visual analog scale |
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