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Identification of pathogen and host-response markers correlated with periodontal disease.

BACKGROUND: Periodontitis is the major cause of tooth loss in adults and is linked to systemic illnesses, such as cardiovascular disease and stroke. The development of rapid point-of-care (POC) chairside diagnostics has the potential for the early detection of periodontal infection and progression to identify incipient disease and reduce health care costs. However, validation of effective diagnostics requires the identification and verification of biomarkers correlated with disease progression. This clinical study sought to determine the ability of putative host- and microbially derived biomar

Evaluation of tetracycline fiber therapy with digital image analysis.

The aims of the present study were to assess radiographically the effects of scaling/root planing combined with antibiotic therapy using tetracycline fibers (TCF): (I) on alveolar bone density and linear descriptors and (II) on supracrestal soft tissue density. 19 subjects with generalized adult periodontitis (with at least 20 teeth present, at least 4 teeth with pockets >4 mm and bleeding upon controlled force probing) and high cultural counts of Porphyromonas gingivalis were recruited from a pool of 57 patients. The full mouth treatment group (FT) consisted of 10 patients, who underwent a fu

Effect of allergen sensitization on external root resorption.

In orthodontic tooth movement (OTM), we should be concerned about external root resorption (ERR) as an undesirable iatrogenic problem, but its mechanisms are not fully understood. Since our previous epidemiologic studies found that patients with allergic diseases showed higher rates of ERR during orthodontic treatment, we explored the possible effect of allergic sensitization on ERR. In ovalbumin (OVA)-sensitized Brown-Norway rats, the amounts of ERR and OTM were greater than those in animals subjected to orthodontic force alone. The expression levels of RANKL and pro-inflammatory cytokines we

Clinical evaluation of split-crest technique with ultrasonic bone surgery for narrow ridge expansion: status of soft and hard tissues and implant success.

PURPOSE: The aim of this study was to evaluate the split-crest technique with ultrasonic bone surgery for implant placement in patients with narrow ridges, focusing on the status of soft and hard tissues and on implant success rate, at least 6 months after implant loading. MATERIALS AND METHODS: During September 2007 and November 2008, 15 patients received 37 implants (BTI implants) with split-crest surgical procedure using ultrasonic bone surgery. Plasma rich in growth factors (PRGF®) was applied during split crest procedure to promote tissue regeneration. Implant surfaces were humidified wi

Immunoexpression of angiogenesis, nitric oxide synthase, and proliferation markers in gingival samples of patients with aggressive and chronic periodontitis.

BACKGROUND: In periodontal tissues, angiogenesis seems to be important for the maintenance of healthy tissues and in periodontal diseases. Angiogenesis is regulated through a complex interplay of molecular signals mediated by growth factors involving extracellular matrix remodeling, endothelial cell migration and proliferation, capillary differentiation and anastomosis. However, the influence of angiogenesis in the development, progression, and healing of periodontal lesions is currently under investigation. This immunohistochemical study evaluates the expression of vascular endothelial growth

Lipid peroxidation levels, total oxidant status and superoxide dismutase in serum, saliva and gingival crevicular fluid in chronic periodontitis patients before and after periodontal therapy.

BACKGROUND: Recent data have demonstrated increased lipid peroxidation (LPO) levels and oxidative stress in periodontitis. Malondialdehyde (MDA) and superoxide dismutase (SOD) are both increased during oxidative stress. Furthermore, this study examined SOD concentration, total oxidative status (TOS) and MDA levels in periodontal patients and investigated the longitudinal effect of periodontal therapy on the index levels of chronic periodontitis (CP) patients. METHODS: Serum, saliva and gingival crevicular fluid (GCF) samples were obtained from 48 CP patients and 35 healthy control subjects pr

Localization and potential function of kindlin-1 in periodontal tissues.

Kindlin-1 is an intracellular focal adhesion protein that regulates the actin cytoskeleton. Patients suffering from Kindler syndrome have a homologous mutation of the kindlin-1 gene and develop skin blisters, periodontal disease, and intestinal complications because of deficient adhesion of the basal epithelial cells. We investigated kindlin-1 localization in periodontal tissue and its functions in cultured keratinocytes and showed that kindlin-1 co-localizes with migfilin and paxillin in the basal epithelial cells of oral mucosa and in cultured keratinocytes. The kindlin-1-deficient oral muco

A single application of hydrogen sulphide induces a transient osteoclast differentiation with RANKL expression in the rat model.

OBJECTIVE: Oral malodor is mainly attributed to volatile sulphur compounds (VSCs) such as hydrogen sulphide (H(2)S), methyl mercaptan and dimethyl sulphide. VSC accelerate periodontal soft tissue destruction. However, there is little information about the potential role of H(2)S in alveolar bone loss. The purpose of this animal study was to examine the effects of sodium hydrogen sulphide (NaHS), H(2)S donor drug, on osteoclast differentiation in rat periodontal tissue. DESIGN: Twenty-four male Wistar rats (8 weeks old) were divided into four groups: a control group and three experimental grou

Phenotypic and functional analysis of peripheral blood mononuclear cells in generalised aggressive and chronic periodontitis patients.

BACKGROUND: The aetiology and pathogenesis of periodontal disease may involve dysfunctions in the cellular immune responses. The aim of the present study was to study the phenotypic and functional activities of peripheral blood mononuclear cells (PBMC) from 16 patients with generalised aggressive periodontitis (G-AP), 13 patients with chronic periodontitis (CP) and 20 periodontally healthy subjects (H). METHODS: The relative counts of CD3+, CD4+, CD8+ T cells, T cells exhibiting HLA DR antigen and interleukin-2 receptor, CD19+ B cells and natural killer cells were determined by two colour flo

A 5-year multicenter study on implant-supported single crown restorations.

In this multicenter prospective study, the results achieved with the use of Brånemark implants for single tooth replacement were evaluated. The overall cumulative success rate was 95.9% for implants and 91.1% for crowns. Two of the 99 implants placed had to be removed before the prosthodontic stage of treatment; thus, 97 were restored with CeraOne crowns. Seventy-seven implants were evaluated radiographically at the 1-year follow-up, 57 at 3 years, and 47 at 5 years. Mean marginal bone resorption was well within the limits set by Albrektsson et al in 1986. The status of the soft tissue around

Integrated connective tissue in bioabsorbable barrier material and periodontal regeneration.

The objective of this study was to evaluate the relationship between integrated connective tissue (ICT), that is, the presence of connective tissue into the membrane structure, and the clinical outcome of membrane-supported periodontal surgery. Twenty-six systemically healthy subjects affected by chronic adult periodontitis were enrolled in the study. One tooth site per patient, associated with an angular bony defect and an attachment loss of > 7 mm, was selected to be treated by means of a guided tissue regeneration procedure using a bioabsorbable membrane. Barrier material was surgically rem

Периодическое заболевание и нейроинфламмация при множественном склерозе: систематический обзор текущих данных.

Множественный склероз (MS) — хроническое, иммунопосредованное неврологическое расстройство, характеризующееся обезвоживанием и нейродегенерацией. Появляющиеся данные свидетельствуют о наличии связи между MS и периодонтальными заболеваниями (PD) через общие иммуновоспалительные пути. В ходе этого обзора оценивается связь между периодонтальными заболеваниями и множественным склерозом с уделением особого внимания взаимодействию между иммунной и воспалением и клинической корреляции. Несмотря на появляющиеся данные, прочность связей остается неясной из-за методологической неоднородности. AIM: Обзор

Совпадение в полном тексте источника
… Gingivitis and Periodontitis are the most common inflammatory diseases of periodontium ( 3 ). Gingivitis is a mild form of reversible gum disease characterised by gingival inflammation and gingival bleeding. … Even though the infection is localized to the periodontium, their significant effects on systemic health have been advocated in literature ( 4 , 5 ). …

Periodontal disease and gene-expression levels of metalloendopeptidases in human buccal mucosal epithelium.

BACKGROUND AND OBJECTIVE: Endopeptidases, such as neutral endopeptidase (NEP), endothelin-converting enzyme-1 (ECE-1) and a disintegrin and metalloprotease 17 (ADAM17), are believed to have various important roles in oral mucosal and epidermal tissue for the regulation of defensive biological responses in the oral cavity, and their expression and activity are influenced by various factors, including oral diseases. However, knowledge concerning these endopeptidases in the oral cavity has been minimal until now. This study focused on three metalloendopeptidases - NEP, ECE-1 and ADAM17 - in the o

Proteome analysis of proteins related to aggressive periodontitis combined with neutrophil chemotaxis dysfunction.

AIM: Some patients suffering from aggressive periodontitis (Ag-P) also display neutrophil chemotaxis dysfunction. In this study, we attempted to identify the proteins involved in Ag-P associated with neutrophil chemotaxis dysfunction using proteome analysis. MATERIAL AND METHODS: A two-dimensional fluorescence difference gel electrophoresis system was used to detect differences in protein expression between neutrophils from four patients suffering from Ag-P combined with neutrophil chemotaxis dysfunction and those from four controls. Moreover, the mRNA levels of the proteins identified by the

Microstructural characterization and comparative evaluation of physical, mechanical and biological properties of three ceramics for metal-ceramic restorations.

OBJECTIVES: A wide variety of dental ceramics compositions have been introduced in dental clinical practice in order to combine desired aesthetics with superior mechanical performance. The aim of the present study was to investigate the microstructural changes in three dental ceramics after their sintering according to manufacturers' instructions and to comparatively evaluate some of their physical, mechanical and biological properties. METHODS: The analysis of the phases present in each material before and after sintering was performed with scanning electron microscopy (SEM), Fourier transfo

Effect of repeated local minocycline administration on periodontal healing following guided tissue regeneration.

BACKGROUND: Infection after a periodontal surgical site has been prepared for guided tissue regeneration (GTR) is one of the common complications that can compromise healing. The purpose of this study was to assess the effect of repeated local antimicrobial therapy following GTR for improving clinical attachment gains, and to histologically evaluate the various cell populations and bacterial contamination of the retrieved expanded polytetrafluoroethylene membrane (ePTFE). METHODS: Forty periodontal intrabony defects in 40 patients were treated by a flap procedure that included the use of ePTF

Topical and systemic antimicrobial therapy in guided tissue regeneration.

BACKGROUND: Bacterial contamination of membrane material negatively affects healing after guided tissue regeneration (GTR) procedures; conversely, flap connective tissue integration on barrier material improves the clinical outcomes. The objective of this study was to evaluate the effect of topical application of antibiotics on: 1) clinical outcomes of GTR surgical procedures using titanium reinforced expanded polytetrafluoroethylene (ePTFE) periodontal membrane; 2) bacterial colonization of membrane material; and 3) flap connective tissue-membrane integration. METHODS: Fifty-six deep interpr

[Evaluation of oral health in the adult population from ages 35-44 in Poland].

The aim of the paper has been to provide objective data comparable to world literature, on the status of masticatory organ in the population of adults aged 35-44 years in Poland. As many as 1380 subjects were studied in 9 voivodeships with due consideration to three inhabited environments: big town, small town and village. The studies were performed in artificial lighting, using a probe and dental mirror, on the basis of methodology found in the WHO instruction of 1986 (Fig. 1.). The status of periodontium and the therapeutic requirements in that respect were assessed by resorting to CPITN ind…

Clinical and Histopathological Aspects of MRONJ in Cancer Patients.

Medication-related osteonecrosis of the jaw (MRONJ) is a major complication of bisphosphonate treatment in cancer patients, and its etiology is not completely clarified. The study's goal is to find connections between the clinical and histopathological characteristics of osteonecrosis and bisphosphonates in a cohort of cancer patients who had osteonecrosis treated surgically. The retrospective study includes 51 patients of both sexes, aged 46 to 85 years, who underwent surgical treatment for MRONJ in two oral and maxillofacial surgery clinics (Craiova and Constanța). Demographic, clinical, and

Совпадение в полном тексте источника
… Figure 9 ( a ) Abundant inflammatory infiltrate in deep periodontium. … Along the junction between the periodontium and the area of bone necrosis, numerous macrophages were noticed. …

Expression of HMGB1 and HMGN2 in gingival tissues, GCF and PICF of periodontitis patients and peri-implantitis.

BACKGROUND AND OBJECTIVE: High mobility group chromosomal protein B1 (HMGB1) and N2 (HMGN2), two members of high mobility group (HMG) family, play important role in inflammation. The purpose of this study was to investigate the expression of HMGB1 and HMGN2 in periodontistis. MATERIALS AND METHODS: The expression of HMGB1 and HMGN2 mRNA in gingival tissues and gingival crevicular fluid (GCF) in chronic periodontitis (CP), generalised aggressive periodontitis (G-AgP) patients and healthy subjects was detected by real-time PCR. The protein level of HMGB1 and HMGN2 in peri-implant crevicular flu