title: Biologic width and crown lengthening: case reports and review.
abstract: The biologic width includes both the connective tissue attachment and the junctional epithelium and has a mean dimension of approximately 2 mm. Invading the biologic width with a restoration can result in localized crestal bone loss, gingival recession, localized gingival hyperplasia, or a combination of these three. When restoring teeth that have subgingival caries or fractures below the gingival attachment, a clinical crown-lengthening procedure is needed to establish the biologic width. This article presents three case reports that utilized crown-lengthening procedures.
authors.affiliation: University of Maryland Dental School in Baltimore, USA.
authors.forename: Se-Lim
authors.initials: SL
authors.lastname: Oh
mesh_terms: D000328:Adult; D016301:Alveolar Bone Loss / Q000209:etiology; D003238:Connective Tissue / Q000033:anatomy & histology; D016556:Crown Lengthening / Q000379:methods*; D003731:Dental Caries / Q000628:therapy; D017267:Dental Prosthesis Design; D003793:Dental Restoration, Permanent / Q000009:adverse effects; D003830:Denture, Partial, Fixed; D004846:Epithelial Attachment / Q000033:anatomy & histology; D005260:Female; D005881:Gingiva / Q000033:anatomy & histology*; D005885:Gingival Hyperplasia / Q000209:etiology; D005889:Gingival Recession / Q000209:etiology; D005890:Gingivectomy; D006801:Humans; D008297:Male; D008875:Middle Aged; D050793:Orthodontic Extrusion; D011176:Post and Core Technique; D013524:Surgical Flaps; D014082:Tooth Fractures / Q000628:therapy