Necade Treatment Planning Sessions 3 Youtube Biological width (bw) is the distance established from the junctional epithelium and connective tissue attachment to the root surface of a tooth. it acts as a natural seal protecting the tooth from infections and diseases. the normal dimension of it is 2.04 mm on average. a periodontal probe is used to determine bw in routine clinical practice. Figure 1. (a) histological sulcus (0.69 mm), (b) epithelial attachment (0.97 mm), (c) connective tissue attachment (1.07 mm), (d) biologic width (b c) the biologic width is essential for preservation of periodontal health and removal of irritation that might damage the periodontium (prosthetic restorations, for example).
Necade Treatment Planning Session 26 Endo Therapeutic Pulpectomy The mean dimensions of the biologic width ranged from. 1.25 0.19 mm to 3.95 1.04 mm (table 1). the smallest biologic width measurement was 0.5 mm and the greatest amounted 6.40 mm. attach ment loss and increased probing depths influenced the dimensions of the biologic width (table 2). The biologic width is equal to 3mm: 1mm sulcular depth, 1mm juntional epithelium and 1mm connective tissue attachment above the crestal bone. as a general rule, the implant head should be placed 3mm apical to the future labial gingival margin position in order to allow development of the desired emergence profile, esthetics, and biologic width. 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. Attachment of 1.07 mm. based on this, the biologic width is commonly stated to be 2.04 mm, which represents the sum of the epithelial and connective tissue measurements.9 in 1977, ingber et al. described "biologic width" and credited d walter cohen for first coining the term.10 the dimension of biologic width is not constant always, it depends.
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