The blood vessels of the dento‐gingival junction

Egelberg, Jan

doi:10.1111/j.1600-0765.1966.tb01857.x

Cited by 144 publications

(74 citation statements)

References 19 publications

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“…The healthy gingiva is characterizes by a sub-epithelial vascular plexus consisting of a capillary network with loops arching towards the epithelium [70]. Gingival inflammation presents an increased vascularity with larger vessel size, more capillary loops, [71] slowed blood flow [72] and a restriction of the afferent blood vessels [73]. The capillary units are among the first vessels affected by inflammation in the crestal gingiva [74].…”

Section: Microcirculation Of the Gingivamentioning

confidence: 99%

Laser Doppler Flowmetry Evaluation of the Microcirculation in Dentistry

Todea¹,

Canjau²,

Miron³

et al. 2016

Microcirculation Revisited - From Molecules to Clinical Practice

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This chapter presents the most important features of laser Doppler (LD) techniques: LD flowmetry (LDF) and LD imaging (LDI), together with examples of their clinical applications in dentistry. LDF gives a constant estimation of blood flow at a specified point, whereas LDI gives a 'snapshot' of perfusion at a given point. These methods are non-invasive laser-based techniques for monitoring gingival and pulpal blood flow and could be used as a diagnostic tool. In paediatric dentistry and odontology, LDF proved to be an atraumatic real-time method used for determining the tooth vitality by monitoring the pulp microcirculation in traumatized teeth, fractured teeth and teeth undergoing different conservative treatments (e.g. bleaching, dental preparation for prosthetic restorations, etc.). In periodontology, recent studies showed the ability of LDF to evaluate the health of gingival tissue in different types of periodontal diseases. By using LDF, it is also possible to evaluate the outcome after different periodontal treatments. The laser Doppler line scanning can be used for recording the gingival healing process after a surgical procedure in the anterior area of the oral cavity.

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Section: Microcirculation Of the Gingivamentioning

confidence: 99%

Laser Doppler Flowmetry Evaluation of the Microcirculation in Dentistry

Todea¹,

Canjau²,

Miron³

et al. 2016

Microcirculation Revisited - From Molecules to Clinical Practice

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“…Inflammatory cells, such as macrophages, polymorphonuclear cells, lymphocytes and plasma cells are also present in the connective tissue but vary in numbers depending on the need for and degree of protective activity (Schroeder & Listgarten 1997). The gingival lamina propria is highly vascularized and the terminal blood vessels form 2 networks; the subepithelial plexus under the oral epithelium and the dentogingival plexus along the junctional epithelium (Egelberg 1966).…”

Section: Introductionmentioning

confidence: 99%

Marginal bone and soft tissue behavior following platform switching abutment connection/disconnection– a dog model study

Alves

Muñoz

González‐Cantalapiedra

et al. 2014

Clinical Oral Implants Res

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Marginal bone and soft tissue behavior following platform switching abutment connection/disconnection -a dog model study PhD THESIS Célia Coutinho AlvesAutorización do Director / Tutor da Tese (RD 778/1998) RESUMENLa literatura científica parece indicar que la conexión/desconexión del pilar protésico puede provocar alteraciones en la inserción epitelial, causando sangrado y ulceración en el mismo. Esta ruptura mecánica se puede considerar como una herida abierta con la exposición del tejido conjuntivo, lo cual puede resultar en una respuesta inflamatoria y consecuentemente en migración apical epitelial.Esta tesis resume un trabajo de investigación experimental "in vivo" diseñado con el objetivo principal de evaluar histológicamente el comportamiento del tejido óseo marginal, cuando se manipula, repetidamente, el pilar de conexión en implantes "switching-platform" colocados en perros Beagle.El objetivo secundario del estudio fue evaluar el comportamiento marginal de tejido blando tanto histológicamente (anchura bilógica) como clínicamente (cambios en el margen de la encía), y radiográficamente el comportamiento marginal de tejido duro (nivel óseo marginal), variando sólo la estabilidad de la conexión del pilar durante el procedimiento estándar de colocación de implantes Straumann® Bone Level la y su rehabilitación protésica.Se seleccionaron seis perros Beagle adultos fueron seleccionados, y se extrajeron los pre-molares en las posiciones Pm3 y Pm4 del ambos lados izquierdo y derecho, dejando un período de cicatrización de 3 meses. En este momento, se colocaron 24 implantes (BL) (Straumann®, Basilea, Suiza) Ø 3.3 / 8 mm, dos en cada lado y en las regiones Pm3 y Pm4. En uno de los lados (grupo control), se colocaron 12 pilares de cicatrización cónicos Ø 3,6 mm, y en el otro lado (grupo teste) lado, se conectaron 12 pilares multibase Narrow CrossFit TM (NC) (Straumann®, Basilea, Suiza) en el momento de la cirugía de colocación de los implantes. En el grupo test, todos los procedimientos de prótesis se realizaron directamente al pilar multibase pilar sin desconectarlo, y en el grupo control, el pilar multibase se conectó / desconectó cinco veces (en las semanas 6/8/10/12/14) durante los procedimientos protésicos.Posteriormente se confeccionaron 12 puentes fijos metálicos y se atornillaron 14 semanas después de la colocación de los implantes. Una visita de higiene / control fue realizada seis meses después de la colocación de los implantes. Los animales fueran sacrificados a los 9 meses del estudio. Los parámetros clínicos y radiográ-ficos (peri-apicales) se registraron en cada visita. El análisis histométrico se realizó para los 24 implantes. La distancia desde el hombro del pilar multibase al primero contacto del implante con hueso (S-BIC) se definió como variable principal. PhD THESIS Célia Coutinho alves PhD THESIS Célia Coutinho alvesMarginal bone and soft tissue behavior following platform switching abutment connection/ disconnection -a dog model study 16Marginal bone and soft tissue behavior following...

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“…Periodontal diseases are chronic inflammatory diseases affecting the well-vascularized connective tissues of the periodontium (20). Microbial challenge at the gingival sulcus leads to an inflammatory response in the adjacent soft tissues that is characterized by a migration of leukocytes from postcapillary venules into the extravascular tissue.…”

mentioning

confidence: 99%

Functional Implication of the Hydrolysis of Platelet Endothelial Cell Adhesion Molecule 1 (CD31) by Gingipains ofPorphyromonas gingivalisfor the Pathology of Periodontal Disease

et al. 2005

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Periodontitis is a response of highly vascularized tissues to the adjacent microflora of dental plaque. Progressive disease has been related to consortia of anaerobic bacteria, with the gram-negative organism Porphyromonas gingivalis particularly implicated. The gingipains, comprising a group of cysteine proteinases and associated hemagglutinin domains, are major virulence determinants of this organism. As vascular expression of leukocyte adhesion molecules is a critical determinant of tissue response to microbial challenge, the objective of this study was to determine the capacity of gingipains to modulate the expression and function of these receptors. Given the potential multifunctional role of platelet endothelial cell adhesion molecule 1 (PECAM-1) in the vasculature, the effect of gingipains on PECAM-1 expression by endothelial cells was examined. Activated gingipains preferentially down-regulated PECAM-1 expression on endothelial cells compared with vascular cell adhesion molecule 1 and endothelial-leukocyte adhesion molecule 1, but the reduction in PECAM-1 expression was completely inhibited in the presence of the cysteine proteinase inhibitor TLCK (N␣-p-tosyl-L-lysine chloromethyl ketone). Endothelial monolayers treated with activated gingipains demonstrated progressive intercellular gap formation that correlated with reduced intercellular junctional PECAM-1 expression as determined by Western blotting and immunofluorescence microscopy. This was accompanied by enhanced transfer of both albumin and neutrophils across the monolayer. The results suggest that degradation of PECAM-1 by gingipains contributes to increased vascular permeability and neutrophil flux at disease sites.

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The blood vessels of the dento‐gingival junction

Cited by 144 publications

References 19 publications

Laser Doppler Flowmetry Evaluation of the Microcirculation in Dentistry

Laser Doppler Flowmetry Evaluation of the Microcirculation in Dentistry

Marginal bone and soft tissue behavior following platform switching abutment connection/disconnection– a dog model study

Functional Implication of the Hydrolysis of Platelet Endothelial Cell Adhesion Molecule 1 (CD31) by Gingipains ofPorphyromonas gingivalisfor the Pathology of Periodontal Disease

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