| AI | Artificial Intelligence |
| ML | Machine Learning |
| DL | Deep Learning |
| CNN | Convolutional Neural Network |
| GR | Gingival Recession |
| KG | Keratinized Gingiva |
| KGW | Keratinized Gingiva Width |
| rKGW | Real (clinically measured) Keratinized Gingiva Width |
| GM | Gingival Margin |
| CEJ | Cementoenamel Junction |
| JBI | Joanna Briggs Institute |
| ABC | Alveolar Bone Crest |
| iGR | Ultrasonographic Index of Gingival Recession |
| iGH | Ultrasonographic Index of Gingival Height |
| iABL | Ultrasonographic Index of Alveolar Bone Level |
| ABL | Alveolar Bone Level |
| GT | Gingival Thickness |
| ABT | Alveolar Bone Thickness |
| PD | Probing Depth |
| BOP | Bleeding on Probing |
| PBI | Papillary Bleeding Index |
| CAL | Clinical Attachment Level |
| ICC | Intraclass Correlation Coefficient |
| DSC | Dice Similarity Coefficient |
| IoU | Intersection over Union |
| TPR | True Positive Rate |
| FPR | False Positive Rate |
| NA | Not Applicable |
| NR | Not Reported |
| CAF | Coronally Advanced Flap |
| CTG | Connective Tissue Graft |
| PRF | Platelet-Rich Fibrin |
| CAF+PRF | Coronally Advanced Flap with Platelet-Rich Fibrin |
| GUG | Gingival Unit Graft |
| XAI | Explainable Artificial Intelligence |