Subgingival Sulcus
Subgingival Sulcus - Related Videos
08:03
Visualization of the Superior Ocular Sulcus during Danio rerio Embryogenesis
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2019
Here, we present a standardized series of protocols to observe the superior ocular sulcus, a recently-identified, evolutionarily-conserved structure in the vertebrate eye. Using zebrafish larvae, we demonstrate techniques necessary to identify factors that contribute to the formation and closure of the superior ocular sulcus.
12:30
A Comprehensive Protocol for Manual Segmentation of the Medial Temporal Lobe Structures
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Cited by 33 •
2014
The present work provides a comprehensive set of guidelines for manually tracing the medial temporal lobe (MTL) structures. This protocol can be applied to research involving structural and/or combined structural-functional magnetic resonance imaging (MRI) investigations of the MTL, in both healthy and clinical groups.
12:50
Lesion Explorer: A Video-guided, Standardized Protocol for Accurate and Reliable MRI-derived Volumetrics in Alzheimer's Disease and Normal Elderly
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Cited by 29 •
2014
Lesion Explorer (LE) is a semi-automatic, image-processing pipeline developed to obtain regional brain tissue and subcortical hyperintensity lesion volumetrics from structural MRI of Alzheimer's disease and normal elderly. To ensure a high level of accuracy and reliability, the following is a video-guided, standardized protocol for LE's manual procedures.
08:30
Intra-articular Shoulder Injection for Reduction Following Shoulder Dislocation
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2023
Source: Rachel Liu, BAO, MBBCh, Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA The anterior shoulder dislocation is one of the most common joint dislocations seen in emergency settings. In anterior shoulder dislocation, the humeral head is displaced out of the glenohumeral joint in front of the scapular glenoid, resulting in a loss of the articulation between the arm and the rest of the shoulder. This can be caused by a fall onto an abducted, extended, and externally...
09:48
Neural Activity Propagation in an Unfolded Hippocampal Preparation with a Penetrating Micro-electrode Array
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Cited by 2 •
2015
We have developed an in vitro unfolded hippocampus which preserves CA1-CA3 array of neurons. Combined with the penetrating micro-electrode array, neural activity can be monitored in both the longitudinal and transverse orientations. This method provides advantages over hippocampal slice preparations as the propagation in the entire hippocampus can be recorded simultaneously.
FAQs
The junctional epithelium has a dual role: it attaches around the tooth to help maintain a seal, yet permits gingival crevicular fluid to enter the sulcus. This balance creates a controlled interface between oral microorganisms and gingival tissues. If tissue attachment changes, the seal’s relationship to the tooth can also change.
Gingival crevicular fluid provides more than moisture in this space. It carries immune cells and proteins into the sulcus, placing components of host defense where the tooth surface, epithelium, and microorganisms meet. This delivery route helps explain the fluid’s importance in the local interaction between gingival tissue and microbial communities.
Sulcus deepening is not attributed to a single factor in the clinical context. Altered microbial composition, inflammation, and changes in tissue attachment can each affect the local tooth and gingiva relationship, and their combined effects may contribute to periodontal pocket formation. Considering these variables together helps clinicians interpret an abnormal depth.
During periodontal probing, clinicians assess sulcus depth and whether bleeding occurs. These observations provide complementary information: depth helps identify enlargement or deepening of the space, while bleeding helps identify early gingival disease. Together, they establish findings that can be followed as oral health changes or as treatment progresses.
Recording sulcus depth and bleeding gives clinicians measurable findings for identifying early gingival disease. The depth indicates whether the space has become deeper, while bleeding adds another clinical sign of altered gingival health. Used together, these observations support assessment of oral health rather than relying on a single finding.
Repeated periodontal probing allows clinicians to compare sulcus depth and bleeding over time. Changes in either finding can help show whether tissue conditions are improving, remaining stable, or requiring continued attention. This makes probing useful not only for recognizing early gingival disease, but also for evaluating the response to treatment.