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

Crown Lengthening (To overcome problems with gummy smile)

Crown Lengthening (To overcome problems with gummy smile)

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

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.

Crown Lengthening (To expose sound tooth structure)

• Techniques:– Apically positioned flap (with or without

bone resection)– Force eruption of teeth

Crown Lengthening (To expose sound tooth structure)

(Apical Positioned Flap)

• Indication:– multiple teeth

• Contraindication:– Single tooth

Crown Lengthening (To expose sound tooth structure)

(Apical Positioned Flap)

Crown Lengthening (To expose sound tooth structure)

(Apical Positioned Flap)

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

Crown Lengthening (To expose sound tooth structure)

(Force Eruption)

Crown Lengthening (To expose sound tooth structure)

(Force Eruption)

Crown Lengthening (To expose sound tooth structure)

(Force Eruption)