1. Crown Lengthening (To overcome problems with gummy smile)
Factors must be considered
Location of gingival margins in relation to the CEJ and the bone crest
Croon-root-alveolar bone relationships
Size and shape of upper lip
Location of lip during speech and during a broad, relaxed smile

2. Crown Lengthening (To overcome problems with gummy smile)

3. Crown Lengthening (To overcome problems with gummy smile)

4. Crown Lengthening (To expose sound tooth structure)
Subgingival location of caries lesions
Subgingival location of fracture lines
Inaccessibility of subgingival margins of failing restorations
Inaccessibility of subgingival prepared tooth structure for proper impressions

5. Crown Lengthening (To expose sound tooth structure)
Biological width:
It is the sum of the supracrestal fibers, the junctional epithelium, and the gingival sulcus and has a proposed minimal dimension of 3 mm.

6. Crown Lengthening (To expose sound tooth structure)
Techniques:
Apically positioned flap (with or without bone resection)
Force eruption of teeth

7. Crown Lengthening (To expose sound tooth structure) (Apical Positioned Flap)
Indication:
multiple teeth
Contraindication:
Single tooth

8. Crown Lengthening (To expose sound tooth structure) (Apical Positioned Flap)

9. Crown Lengthening (To expose sound tooth structure) (Apical Positioned Flap)

10. Crown Lengthening (To expose sound tooth structure) (Force Eruption)
Indications:
At sites where it is important to maintain the location of the gingival margin at adjacent teeth unchanged
At sites where removal of attachment and bone from adjacent teeth must e avoided
At sites where with angular bony defects
Contraindications:
Few teeth remaining

11. Crown Lengthening (To expose sound tooth structure) (Force Eruption)

12. Crown Lengthening (To expose sound tooth structure) (Force Eruption)

13. Crown Lengthening (To expose sound tooth structure) (Force Eruption)