The natural seal that develops around both, protecting the alveolar bone from infection and disease, is known as the biologic width. The biological width is defined as the dimension of the soft tissue, which is attached to the portion of the tooth coronal to the crest of the alveolar bone.
- 1 What is the biological width of a tooth?
- 2 Why is biologic width important?
- 3 What is the ideal biological width?
- 4 What happens when biological width is violated?
- 5 Where is the biologic width?
- 6 What is fenestration and dehiscence?
- 7 What is the biological width around implant?
- 8 What is the periodontal space?
- 9 Where should crown margins be placed?
- 10 What is alveolar crest?
- 11 Where is the Mucogingival Junction?
- 12 What is Dentogingival unit?
- 13 What is the most effective antimicrobial therapy available to reduce plaque and gingivitis?
- 14 What type of bacteria causes periodontal disease?
- 15 Why is it important that restorations approximating the gingiva must be smooth and polished?
What is the biological width of a tooth?
The biologic width is the distance established from the junctional epithelium and connective tissue attachment to the root surface of a tooth. This is also described as the height between the deepest point of the gingival sulcus and the alveolar bone crest.
Why is biologic width important?
The natural barrier that develops around the teeth and dental implants to protect the alveolar bone from disease and infection is known as the biologic width. As such, biologic width is vital for the preservation of periodontal health and removal of irritation that could damage the periodontium.
What is the ideal biological width?
The biologic width is specific to each patient and can range from 0.75-4.3 mm. According to the 1961 paper by Gargiulo, the mean biologic width was found to be 2.04 mm. From this, 1.07 mm is comprised of the connective tissue attachment and another 0.97 mm is occupied by the junctional epithelium.
What happens when biological width is violated?
Around teeth, the most common response to a biologic width violation is gingival inflammation, a significant problem on anterior restorations. The importance of biologic width to surgery relates to its reformation following surgical intervention.
Where is the biologic width?
The biologic width can be identified by probing under local anesthesia to the bone level (referred to as “sounding to bone”) and subtracting the sulcus depth from the resulting measurement. If this distance is less than 2 mm at one or more locations, a diagnosis of biologic width violation can be confirmed.
What is fenestration and dehiscence?
Fenestration is the condition, in which the bony coverage of the root surface is lost, and the root surface is only covered by the periosteum and gingiva. In such lesions, marginal bone is intact. When this bone defect spreads toward the marginal bone, it is called dehiscence.
What is the biological width around implant?
The biological width around implant is a 3-4mm distance from the top of the peri -implant mucosa to the first bone-to-implant contact or the stabilized top of the adjacent bone, consisting of sulcular epithelium, junctional epithelium and fibrous connective tissue between the epithelium and the first bone-to-implant
What is the periodontal space?
The Periodontal Ligament (PDL) can be defined as a fibrous joint that anchors the root of the tooth to the alveolar bone socket. Made of fibrous connective tissue, it holds the tooth in sprung suspension enabling the tooth to take on the mechanical pressure during function.
Where should crown margins be placed?
The margins for crowns should be placed supragingivally—that is to say, they should be placed at or above the gum line. If they’re placed slightly below the gumline, they shouldn’t go more than 0.5mm beneath the surface.
What is alveolar crest?
The alveolar crest is the most cervical rim found in the alveolar bone proper. When it is healthy, the alveolar crest is slightly apical to the cementoenamel junction (CEJ) by about 1.5-2 mm. The alveolar crests of the adjacent teeth are also uniform in height along the jaw when they are healthy.
Where is the Mucogingival Junction?
A mucogingival junction is a feature which is found on the intraoral mucosa. The mucosa located on the cheeks and on the floor of the mouth are freely moveable and fragile.
What is Dentogingival unit?
The dentogingival unit (DGU) is the anatomical complex formed by the gingival membrane, gingival sulcus, junctional epithelium and connective tissue insertion, also known as the ìbiological spaceî. It is very important, and its invasion may cause the collapse and apical migration of the fixation apparatus.
What is the most effective antimicrobial therapy available to reduce plaque and gingivitis?
By eliminating harmful bacteria from the mouth with antibiotics, periodontal symptoms such as bleeding gums and loose teeth can be eliminated without surgical intervention. Antiseptic mouthwashes are the most common antimicrobial treatment.
What type of bacteria causes periodontal disease?
The bacteria associated with periodontal diseases are predominantly gram-negative anaerobic bacteria and may include A. actinomycetemcomitans, P. gingivalis, P.
Why is it important that restorations approximating the gingiva must be smooth and polished?
They must be smooth and polished and the interdental contact area must be correctly made, in order to prevent interdental food settling.