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Journal of Periodontal Research

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https://www.readbyqxmd.com/read/28504459/steatosis-caused-by-experimental-periodontitis-is-reversible-after-removal-of-ligature-in-rats
#1
J Dos Santos Carvalho, A C Cardoso Guimarães Vasconcelos, E Herlany Pereira Alves, A Dos Santos Carvalho, F R P da Silva, L F de Carvalho França, A de Pádua Rocha Nóbrega Neto, D Di Lenardo, L K M de Souza, A L Dos R Barbosa, J-V R Medeiros, J S de Oliveira, D F P Vasconcelos
BACKGROUND AND OBJECTIVE: Periodontitis may promote harmful systemic effects such as changes in hepatic tissues. The purpose of this study was to investigate whether the steatosis and oxidative stress caused by experimental periodontitis are reversible in the liver. MATERIAL AND METHODS: Twenty-four rats were divided into three groups: control, periodontitis and P20-20 (20 days with experimental periodontitis and 20 days without experimental periodontitis, to verify the reversibility of hepatic injuries)...
May 15, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28464230/patients-with-chronic-periodontitis-present-increased-risk-for-osteoporosis-a-population-based-cohort-study-in-taiwan
#2
L-P Mau, Y-C Kuan, Y-W C Tsai, J-J Lin, G Huynh-Ba, P-W Weng, Y-S Shieh, W-C Cheng, R-Y Huang
OBJECTIVES: Chronic periodontitis is a bone destructive inflammatory disease with an adverse impact on general health and suggested underlying factors in common with osteoporosis. A few studies have examined the possible relationship between chronic periodontitis and osteoporosis; however, the results remain inconclusive. This longitudinal follow-up study investigated the possible risk of patients with chronic periodontitis to present osteoporosis by using a population-based national health insurance data set in Taiwan...
May 2, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28397250/the-cage-gene-sequence-as-a-diagnostic-marker-to-identify-jp2-and-non-jp2-highly-leukotoxic-aggregatibacter-actinomycetemcomitans-serotype-b-strains
#3
A Johansson, R Claesson, C Höglund Åberg, D Haubek, J Oscarsson
BACKGROUND AND OBJECTIVE: Aggregatibacter actinomycetemcomitans is involved in oral and systemic infections, and is associated with, eg aggressive forms of periodontitis and with endocarditis. The cagE gene encodes a ≈39 kDa putative exotoxin expressed by A. actinomycetemcomitans. The level of conservation of cagE, and its possible significance in periodontal disease, has not yet been thoroughly investigated. In the present study, the role of the cagE gene as a diagnostic marker has been investigated...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28397248/porphyromonas-gingivalis-antibody-levels-and-diagnosis-of-coronary-artery-disease-in-hiv-positive-individuals
#4
V L Berquist, A C Hearps, P Ford, A Jaworowski, S J Leishman, J F Hoy, J M Trevillyan
BACKGROUND AND OBJECTIVE: Periodontal disease has been associated with cardiovascular disease in the general population. It is unknown whether IgG antibody levels for periodontal pathogens are associated with the diagnosis of coronary artery disease (CAD) in HIV-positive individuals. MATERIAL AND METHODS: Twenty-four HIV-positive individuals (cases) with stored plasma available in the 12 months before CAD diagnosis were age- and sex-matched 1:2 with 46 HIV-positive individuals without CAD (controls)...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28394081/the-effect-of-low-level-laser-therapy-as-an-adjunct-to-non-surgical-periodontal-treatment-on-gingival-crevicular-fluid-levels-of-transforming-growth-factor-beta-1-tissue-plasminogen-activator-and-plasminogen-activator-inhibitor-1-in-smoking-and-non-smoking
#5
F Pamuk, M Lütfioğlu, A Aydoğdu, C Z Koyuncuoglu, E Cifcibasi, O S Badur
BACKGROUND AND OBJECTIVE: This study aimed to investigate the effects of low-level laser therapy (LLLT) as an adjunct to scaling and root planing (SRP) on smoking and non-smoking patients with chronic periodontitis. MATERIAL AND METHODS: The study was conducted using a split-mouth design with 30 patients with chronic periodontitis (15 smokers, 15 non-smokers) and 30 healthy individuals matched for age, sex and smoking status as controls. Groups were constituted as follows: Cp+SRP+Sham: non-smokers with chronic periodontitis treated with SRP; Cp+SRP+LLLT: non-smokers with chronic periodontitis treated with SRP+LLLT; SCp+SRP+Sham: smokers with chronic periodontitis treated with SRP; SCp+SRP+LLLT: smokers with chronic periodontitis treated with SRP+LLLT; C: control group comprised of periodontally healthy non-smokers; SC: control group comprised of periodontally healthy smokers...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28394043/efficacy-of-stem-cells-on-periodontal-regeneration-systematic-review-of-pre-clinical-studies
#6
REVIEW
S A Tassi, N Z Sergio, M Y O Misawa, C C Villar
This systematic review aims to evaluate mesenchymal stem cells (MSC) periodontal regenerative potential in animal models. MEDLINE, EMBASE and LILACS databases were searched for quantitative pre-clinical controlled animal model studies that evaluated the effect of local administration of MSC on periodontal regeneration. The systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement guidelines. Twenty-two studies met the inclusion criteria. Periodontal defects were surgically created in all studies...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28393368/increased-levels-of-the-t-helper-22-associated-cytokine-interleukin-22-and-transcription-factor-aryl-hydrocarbon-receptor-in-patients-with-periodontitis-are-associated-with-osteoclast-resorptive-activity-and-severity-of-the-disease
#7
J Díaz-Zúñiga, S Melgar-Rodríguez, L Rojas, C Alvarez, G Monasterio, P Carvajal, R Vernal
BACKGROUND AND OBJECTIVE: Two new T-helper (Th) phenotypes have been recently described and named Th9 and Th22 lymphocytes; however, their role in the pathogenesis of periodontitis remains unclear. This study was aimed to assess whether Th9 and Th22 lymphocytes, through interleukin (IL)-9 and IL-22 production, respectively, are associated with the severity of periodontitis and bone resorption. MATERIAL AND METHODS: Gingival crevicular fluid samples and biopsies were obtained from patients with moderate-to-advanced chronic periodontitis and gingivitis, and healthy controls...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28393367/increasing-popularity-of-waterpipe-tobacco-smoking-and-electronic-cigarette-use-implications-for-oral-healthcare
#8
REVIEW
C P Ramôa, T Eissenberg, S E Sahingur
Cigarette smoking increases the risk of developing several systemic conditions including cancer, cardiovascular and pulmonary diseases. Cigarette smoking is also detrimental to oral health as it increases the incidence and severity of oral cancer, periodontal diseases and peri-implantitis, as well as impacting negatively on the dental patients' response to therapy. Therefore, consideration of smoking behavior and recommendation of smoking cessation are important parts of dental treatment planning. However, cigarettes are no longer the most popular form of tobacco use among adolescents in the United States and globally...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28393366/orthodontic-tensile-strain-induces-angiogenesis-via-type-iv-collagen-degradation-by-matrix-metalloproteinase-12
#9
T Narimiya, S Wada, H Kanzaki, M Ishikawa, A Tsuge, Y Yamaguchi, Y Nakamura
BACKGROUND AND OBJECTIVE: During orthodontic tooth movement (OTM), periodontal ligament (PDL) is remodeled dynamically, which requires sufficient blood supply for the regeneration of PDL. However, little is known about the remodeling of blood vessels during OTM. In this study, we hypothesized that the orthodontic tensile strain upregulates matrix metalloproteinase-12 (MMP-12) expression in the tension zone and induces angiogenesis via degradation of type IV collagen (Col-IV) in vascular endothelial basement membrane during the early stage of OTM...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28345770/effect-of-1-25-oh-2-d3-and-20-oh-d3-on-interleukin-1%C3%AE-stimulated-interleukin-6-and-8-production-by-human-gingival-fibroblasts
#10
V Nakashyan, D A Tipton, A Karydis, R Livada, S H Stein
BACKGROUND AND OBJECTIVE: Vitamin D-1,25(OH)2 D3 or 1,25D3-maintains healthy osseous tissue, stimulates the production of the antimicrobial peptide cathelicidin and has anti-inflammatory effects, but it can cause hypercalcemia. Evidence links diminished serum levels of 1,25D3 with increased gingival inflammation. Periodontitis progression is associated with increased local production of inflammatory mediators by immune cells and gingival fibroblasts. These include interleukin (IL)-6, a regulator of osteoclastic bone resorption, and the neutrophil chemoattractant IL-8, both regulated by signaling pathways, including NF-κB and MAPK/AP-1...
March 27, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28345758/biodegradable-gelatin-beta-tricalcium-phosphate-sponges-incorporating-recombinant-human-fibroblast-growth-factor-2-for-treatment-of-recession-type-defects-a-split-mouth-study-in-dogs
#11
A Shujaa Addin, T Akizuki, S Hoshi, T Matsuura, T Ikawa, S Fukuba, M Matsui, Y Tabata, Y Izumi
BACKGROUND AND OBJECTIVE: Tissue engineering by using recombinant human (rh) growth factor technology may offer a promising therapeutic approach for treatment of gingival recession. Fibroblast growth factor-2 (FGF-2) has shown the ability to promote periodontal regeneration. Gelatin/beta-tricalcium phosphate (gelatin/β-TCP) sponges have been developed to control the release of growth factors. The present study evaluated the periodontal regenerative efficacy of rhFGF-2 by comparing gelatin/β-TCP sponges incorporated with rhFGF-2 to the scaffolds alone in artificially created recession-type defects in dogs...
March 27, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28345244/association-between-serum-and-oral-matrix-metalloproteinase-8-levels-and-periodontal-health-status
#12
B Noack, T Kipping, T Tervahartiala, T Sorsa, T Hoffmann, K Lorenz
BACKGROUND AND OBJECTIVE: Matrix metalloproteinase-8 (MMP-8) is involved in a wide range of pathologies including periodontitis and cardiovascular diseases (CVD). The association between periodontitis and CVD has been repeatedly recognized. The aim of the study was to analyze to what extent circulating active MMP-8 (aMMP-8) is associated with periodontal disease status and oral fluid aMMP-8 levels in otherwise healthy subjects. MATERIAL AND METHODS: In a cross-sectional study, aMMP-8 was measured in serum of 59 volunteers, comprising 19 periodontally healthy subjects, 20 patients with gingivitis as well as 20 with periodontitis...
March 27, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28332191/combined-application-of-er-yag-and-nd-yag-lasers-in-treatment-of-chronic-periodontitis-a-split-mouth-single-blind-randomized-controlled-trial
#13
M Sağlam, S Köseoğlu, I Taşdemir, H Erbak Yılmaz, L Savran, R Sütçü
BACKGROUND: The aim of the present study was to compare the effectiveness of combined Er:YAG and Nd:YAG laser therapy to that of scaling and root planing with hand instruments in non-surgical treatment of chronic periodontitis. MATERIAL AND METHODS: Twenty-five systemically healthy patients with chronic periodontitis were selected for this study. The quadrants were randomly allocated in a split-mouth design to either combined Er:YAG (160 mJ/pulse, 10 Hz) and Nd:YAG laser (100 mJ/pulse, 20 Hz) therapy (test group) or scaling and root planing alone (control group)...
March 23, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28321876/effects-of-glucose-concentration-on-osteogenic-differentiation-of-type-ii-diabetes-mellitus-rat-bone-marrow-derived-mesenchymal-stromal-cells-on-a-nano-scale-modified-titanium
#14
I Yamawaki, Y Taguchi, S Komasa, A Tanaka, M Umeda
BACKGROUND AND OBJECTIVE: Diabetes mellitus (DM) is a common disease worldwide. Patients with DM have an increased risk of losing their teeth compared with other individuals. Dental implants are a standard of care for treating partial or full edentulism, and various implant surface treatments have recently been developed to increase dental implant stability. However, some studies have reported that DM reduces osseointegration and the success rate of dental implants. The purpose of this study was to determine the effects of high glucose levels for hard tissue formation on a nano-scale modified titanium surface...
March 21, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28321852/active-matrix-metalloproteinase-8-and-periodontal-bacteria-depending-on-periodontal-status-in-patients-with-rheumatoid-arthritis
#15
A Kirchner, J Jäger, B Krohn-Grimberghe, S Patschan, T Kottmann, G Schmalz, R F Mausberg, R Haak, D Ziebolz
BACKGROUND AND OBJECTIVES: The aim of this clinical cross-sectional study was to determine the level of active matrix metalloproteinase-8 (aMMP-8) and periodontal pathogenic bacteria in gingival crevicular fluid in patients with rheumatoid arthritis (RA) with varying periodontal conditions. MATERIAL AND METHODS: In total, 103 patients with RA and 104 healthy controls (HC) were included. The assessment of periodontal status included periodontal probing depth, bleeding on probing and clinical attachment loss...
March 21, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28306142/the-effect-of-smoking-on-inflammatory-and-bone-remodeling-markers-in-gingival-crevicular-fluid-and-subgingival-microbiota-following-periodontal-therapy
#16
D F Bunaes, M Mustafa, H G Mohamed, S A Lie, K N Leknes
BACKGROUND AND OBJECTIVE: Periodontal health is mediated by suppressing microorganisms inducing a local inflammatory host response. Smoking may impair this process. This study compares gingival crevicular fluid levels of inflammatory and bone remodeling markers in heavy smokers and non-smokers following active and supportive periodontal therapy in patients with chronic periodontitis. MATERIAL AND METHODS: Gingival crevicular fluid and subgingival plaque were collected from the deepest periodontal pocket in 50 patients, 25 smokers and 25 non-smokers, at baseline (T0), following active (T1) and 12 mo of supportive periodontal therapy (T2)...
March 17, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28261803/difference-in-release-kinetics-of-unwashed-and-washed-platelet-released-supernatants-from-bone-substitute-materials-the-impact-of-platelet-preparation-modalities
#17
C Knoop, M Edelmayer, K Janjić, M Pensch, M B Fischer, R Gruber, H Agis
BACKGROUND AND OBJECTIVE: In regenerative dentistry, platelet preparations are applied to stimulate bone healing and periodontal regeneration. Here, we pursue a strategy where bone substitutes are used as carriers for platelet-released supernatants. The mitogenic capacity and release kinetics of loaded bone substitutes were assessed. MATERIAL AND METHODS: Platelet-released supernatants of washed platelets (washed PRS) and platelet-released supernatants of unwashed platelets (unwashed PRS) were lyophilized onto the bone substitutes deproteinized bovine bone mineral, hydroxyapatite and β-tricalcium phosphate...
March 6, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28261800/on-the-discovery-of-cementum
#18
REVIEW
B L Foster
Though cementum of the tooth root is critical for periodontal structure and tooth attachment and function, this tissue was not discovered and characterized on human teeth until a full century later than enamel and dentin. Early observations from the seventeenth to the nineteenth centuries by Marcello Malpighi, Antonie van Leeuwenhoek, Robert Blake, Jacques Tenon and Georges Cuvier founded a confusing and conflicting nomenclature that obscured the nature of cementum, often conflating it with bone. Advances in microscopy and histological procedures yielded the first detailed descriptions of human cementum in the 1830s by Jan Purkinje and Anders Retzius, who identified for the first time acellular and cellular types of cementum, and the resident cementocytes embedded in the latter...
March 6, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28256038/rosuvastatin-promotes-benefits-on-induced-periodontitis-in-hypertensive-rats
#19
M R Messora, G H Apolinário Vieira, J M T M M Vanderlei, V C Mariguela, P G Fernandes, D B Palioto, S L Scombatti de Souza, A B Novaes, F Furlaneto, M Taba
BACKGROUND AND OBJECTIVE: The potential benefits of statins in modulating periodontal disease is supported by in vitro and clinical studies showing statins can induce a lower expression of proinflammatory cytokines and matrix metalloproteinases. The aim of this study was to evaluate the effects of rosuvastatin (ST) on ligature-induced periodontitis in spontaneously hypertensive rats (SHR). MATERIAL AND METHODS: Fifty-four adult male rats were divided into three groups: SHR-C, SHR-L and SHR-L-ST (C, control; L, ligature groups)...
March 2, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28256034/platelet-factor-4-upregulates-matrix-metalloproteinase-1-production-in-gingival-fibroblasts
#20
M Javaid, J Bi, C Biddle, C M Tsai, L Häkkinen, H Kim
BACKGROUND AND OBJECTIVE: Periodontitis is a highly prevalent chronic inflammatory disease that causes tooth loss, morbidity and confers an increased risk for systemic disease. Tissue destruction during periodontitis is due in large part to collagen-degrading matrix metalloproteinases (MMPs) released by resident cells of the periodontium in response to proinflammatory cytokines. Platelets are immune-competent blood cells with a newly recognized role in chronic inflammation; however, their role in the pathogenesis of periodontitis is undefined...
March 2, 2017: Journal of Periodontal Research
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