1 — Gingival sulcus; Gingival groove; 2 — Cingival papilla; Interdental papilla; 3 — Cingival margin; 4 — Medial pterygoid; 5 — Masseter; 6 — Parotid duct; 7 — Inferior alveolar nerve; 8 — Buccal nerve; 9 — Lunule; 10 — Gingiva; Gum, buccal surface (maxilla); 11 — Gingiva; Gum, labial surface (maxilla); 12 — Gingiva; Gum, lingual surface (palatal surface) (maxilla); 13 — Greater palatine artery; Greater palatine nerve; 14 — Palatine aponeurosis; Palatopharyngeus; 15 — Pterygomandibular raphe; 16 — Gingiva; Gum, paracervical part; 17 — Buccinator;
18 — Gingiva, alveolar part; 19 — Transive fold; 20 — Frenulum of lower lip
