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https://www.readbyqxmd.com/read/28646601/autophagy-activation-is-required-for-myofibroblasts-differentiation-during-healing-of-oral-mucosa
#1
Enrica Vescarelli, Andrea Pilloni, Francesco Dominici, Paola Pontecorvi, Antonio Angeloni, Antonella Polimeni, Simona Ceccarelli, Cinzia Marchese
AIM: It is known that periodontal tissues heal faster that skin, and gingiva in particular heal without scar formation. The mechanisms regulating this behavior are still unclear. The aim of our work is to compare wound healing in oral mucosa and gingiva, investigating the role of αSMA-expressing myofibroblasts and autophagy. MATERIALS AND METHODS: Biopsies were obtained from 7 patients immediately before and 24h after vertical releasing incision in oral mucosa and attached gingiva...
June 24, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28646499/the-association-between-oral-hygiene-and-periodontitis-a-systematic-review-and-meta-analysis
#2
REVIEW
Attawood Lertpimonchai, Sasivimol Rattanasiri, Sakda Arj-Ong Vallibhakara, John Attia, Ammarin Thakkinstian
OBJECTIVE: Dental plaque accumulation and inadequate personal oral hygiene (OH) are known major risk factors of periodontitis. Nevertheless, the magnitude of their effects has not yet been the subject of a meta-analysis. MATERIAL AND METHODS: The Medline and Scopus databases were searched up to May 2016. Observational studies were eligible if they assessed associations between OH and periodontitis in adult subjects. A multivariate random-effects meta-analysis was used to pool the effects of fair/poor OH versus good OH on periodontitis across studies...
June 23, 2017: International Dental Journal
https://www.readbyqxmd.com/read/28646427/tanshinone-iia-attenuates-atherosclerosis-in-apolipoprotein-e-knockout-mice-infected-with-porphyromonas-gingivalis
#3
Yan Xuan, Yue Gao, Hao Huang, Xiaoxuan Wang, Yu Cai, Qing Xian Luan
Tanshinone IIA (TSA), a pharmacologically active component isolated from Danshen, may prevent cardiovascular diseases due to its anti-inflammatory, anti-oxidative, and anti-adipogenic effects. Porphyromonas gingivalis, a major periodontal pathogen, may contribute to the progression of atherosclerosis. Here, we studied the effects of TSA on atherosclerosis in ApoE(-/-) mice with P. gingivalis infection. Eight-week-old ApoE(-/-) mice were randomized to (a) phosphate-buffered saline (PBS), (b) P. gingivalis, and (c) P...
June 23, 2017: Inflammation
https://www.readbyqxmd.com/read/28646265/omega-3-and-omega-6-fatty-acids-act-as-inhibitors-of-the-matrix-metalloproteinase-2-and-matrix-metalloproteinase-9-activity
#4
Eleonora Nicolai, Federica Sinibaldi, Gianpaolo Sannino, Giuseppina Laganà, Francesco Basoli, Silvia Licoccia, Paola Cozza, Roberto Santucci, Maria Cristina Piro
Polyunsaturated fatty acids have been reported to play a protective role in a wide range of diseases characterized by an increased metalloproteinases (MMPs) activity. The recent finding that omega-3 and omega-6 fatty acids exert an anti-inflammatory effect in periodontal diseases has stimulated the present study, designed to determine whether such properties derive from a direct inhibitory action of these compounds on the activity of MMPs. To this issue, we investigated the effect exerted by omega-3 and omega-6 fatty acids on the activity of MMP-2 and MMP-9, two enzymes that actively participate to the destruction of the organic matrix of dentin following demineralization operated by bacteria acids...
June 23, 2017: Protein Journal
https://www.readbyqxmd.com/read/28645686/relationship-between-cardiovascular-disease-and-dental-pathology-systematic-review
#5
REVIEW
Beatriz González Navarro, Xavier Pintó Sala, Enric Jané Salas
BACKGROUND AND OBJECTIVE: The relationship between atherothrombotic cardiovascular disease (ATCD) and localised infections in teeth, including caries and chronic apical periodontitis (CAP) has not been studied much and is not well defined. METHOD: A systematic search was performed using the scientific databases PubMed and Medline from 1989 to 2016. RESULTS: A significant relationship was observed with ATCD in 10 out of 10 studies addressing the degree of oral hygiene, in 14 of 17 that included loss of teeth, in 6 of 12 that analysed caries and in 11 of 15 that included CAP...
June 20, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/28645528/long-term-sustainable-dendritic-cell-specific-depletion-murine-model-for-periodontitis-research
#6
Amanda Finger Stadler, Mitulkumar Patel, Rafal Pacholczyk, Christopher W Cutler, Roger M Arce
Dendritic cells (DCs) are specialized antigen-presenting cells that play a pivotal role in the pathogenesis of periodontitis. The use of animal models to study the role of DCs in periodontitis has been limited by lack of a method for sustained depletion of DCs. Hence, the objectives of this study were to validate the zDC-DTR knockin mouse model of conventional DCs (cDCs) depletion, as well as to investigate whether this depletion could be sustained long enough to induce alveolar bone loss in this model. zDC-DTR mice were treated with different dose regimens of diphtheria toxin (DT) to determine survival rate...
June 20, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28644512/association-of-flossing-interdental-cleaning-and-periodontitis-in-adults
#7
M Soledad Cepeda, Rachel Weinstein, Clair Blacketer, Michael Lynch
AIM: Assess the association of flossing with periodontitis. MATERIALS AND METHODS: This was a cross-sectional study using the National Health and Nutrition Examination Survey (NHANES) years 2011-2014. We used three categories of flossing: 0-1, 2-4, and ≥5 days in the past week and the CDC definition of periodontitis. We calculated odds ratios controlling for age, gender, smoking, drinking, income, and dentist visits. RESULTS: A total of 6939 adult subjects were included, 35% flossed ≤1 time a week and 40% had periodontitis...
June 23, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28644108/comparison-of-periodontal-parameters-and-self-perceived-oral-symptoms-among-cigarette-smokers-individuals-vaping-electronic-cigarettes-and-never-smokers-a-pilot-study
#8
Fawad Javed, Tariq Abduljabbar, Fahim Vohra, Hans Malmstrom, Irfan Rahman, Georgios E Romanos
BACKGROUND: There are no studies that have compared periodontal parameters and self-perceived oral symptoms (OS) among cigarette smokers (Group-1), individuals exclusively vaping electronic cigarettes (Group-2) and never-smokers (Group-3). The aim was to assess the periodontal parameters and self-perceived OS among vaping individuals, CS and NS. METHODS: Demographic data, self-perceived OS and duration and daily frequency of vaping and smoking were gathered using a questionnaire...
June 23, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28644106/viability-and-osteogenic-differentiation-of-human-periodontal-ligament-progenitor-cells-are-maintained-after-incubation-with-porphyromonas-gingivalis-protein-extract
#9
Mayra Laino Albiero, Rafael Nóbrega Stipp, Miki Taketomi Saito, Márcio Zaffalon Casati, Enilson Antonio Sallum, Francisco Humberto Nociti, Karina Gonzales Silvério
BACKGROUND: Porphyromonas gingivalis (Pg) is a major periodontal pathogen that contains immunostimulatory components. Periodontal ligament mesenchymal stem cells (PDLSCs) are responsible for regeneration of the periodontium that is lost due to periodontitis. Pathologic factors within the microenvironment that impair resident PDLSCs are not well understood. The present study investigated in vitro the effects of Pg protein extract (PgPE) on the biological properties of CD105-enriched PDL progenitor cell populations (PDL-CD105(+) cells)...
June 23, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28643938/oral-application-of-a-periodontal-pathogen-impacts-serpine1-expression-and-pancreatic-islet-architecture-in-prediabetes
#10
V Ilievski, U G Bhat, S Suleiman-Ata, B A Bauer, P T Toth, S T Olson, T G Unterman, K Watanabe
BACKGROUND AND OBJECTIVES: Epidemiological studies suggest a close association between periodontitis and prediabetes/insulin resistance (IR) but whether periodontitis causes prediabetes in humans is not known. Using various animal models, we have recently established that periodontitis can be an initiator of prediabetes, which is characterized by glucose intolerance, hyperinsulinemia and IR. In addition, our in vitro studies indicated that Porphyromonas gingivalis (Pg) induced insulin secretion in MIN6 β cells and this induction was in part SerpinE1 (plasminogen activator inhibitor 1, PAI1) dependent...
June 23, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28643937/proinflammatory-effects-and-mechanisms-of-calprotectin-on-human-gingival-fibroblasts
#11
H Gao, J Hou, H Meng, X Zhang, Y Zheng, L Peng
BACKGROUND AND OBJECTIVE: Calprotectin (S100A8/A9) is a heterodimer of S100A8 and S100A9 and is associated with multiple inflammatory diseases, including Crohn's disease, rheumatoid arthritis and periodontitis. Levels of calprotectin are elevated in the gingival crevicular fluid of patients with periodontitis; however, the effects of calprotectin on human gingival fibroblasts (HGFs) remain unknown. This study investigated the proinflammatory activity of calprotectin on HGFs and the functional receptors and signaling pathways engaged by calprotectin...
June 23, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28643933/oncologic-doses-of-zoledronic-acid-induce-site-specific-suppression-of-bone-modelling-in-rice-rats
#12
C R Exposto, U Oz, J S Callard, M J Allen, H Khurana, A D' Atri, X Mo, S A Fernandez, D N Tatakis, K Edmonds, P M Westgate, S S Huja
OBJECTIVES: To examine the effect of zoledronic acid (ZOL) on cortical bone modelling and healing of extraction sockets in the jaw bones of a rodent model. We hypothesized ZOL suppresses both the bone formation in the modelling mode in the jaw bones and alters the extraction site healing. MATERIAL & METHODS: Rice rats were administered saline solution and two dose regimens of ZOL: 0.1 mg/kg, twice a week, for 4 weeks (n=17, saline=8 & ZOL=9) and a higher dose of 0...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643923/micro-anatomical-responses-in-periodontal-complexes-of-mice-to-calibrated-orthodontic-forces-on-the-crown
#13
A Pal, L Chen, L Yang, F Yang, B Meng, A H Jheon, S P Ho
OBJECTIVE: Correlating mechanical forces with quantifiable physical changes in the dentoalveolar complex. SETTING AND SAMPLE POPULATION: Male 6-week C57BL/6 mice (N=3), micro X-ray-computed tomography; post-analysis software to extract physical changes in periodontal ligament (PDL)-space. MATERIALS AND METHODS: Silicone-elastic bands were placed between maxillary molars for 1 week, with the contralateral side as internal control. Average displacements between crowns and roots, and changes in PDL-spaces were evaluated by registering X-ray tomograms of experimental and control hemi-maxillae...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643909/the-fate-of-osterix-expressing-mesenchymal-cells-in-dental-root-formation-and-maintenance
#14
A Takahashi, N Ono, W Ono
OBJECTIVES: Osterix (Osx)-expressing mesenchymal cells are progenitors for tooth root forming cells. The aim of this study was to reveal the fates of Osx-expressing cells during and after root formation using a lineage tracing experiment. MATERIAL AND METHODS: To reveal the fates of Osx-expressing dental mesenchymal progenitors, we took advantage of tamoxifen-inducible Cre reporter system. Osx-creER; R26R-tdTomato mice received tamoxifen (0.1 mg/body) at postnatal day 3 (P3)...
June 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28643883/is-ridge-preservation-augmentation-at-periodontally-compromised-extraction-sockets-safe-a-retrospective-study
#15
Jung-Ju Kim, Heithem Ben Amara, Frank Schwarz, Hae-Young Kim, Jung-Won Lee, Ulf Me Wikesjö, Ki-Tae Koo
OBJECTIVES: This study aimed to evaluate the safety of ridge preservation/augmentation procedures when performed at compromised extraction sockets. METHODS: Patients subject to ridge preservation/augmentation at periodontally compromised sockets at Seoul National University Dental Hospital(SNUDH) were evaluated in a chart review. Tooth extractions due to acute infection were not included in our study as chronically formed lesions are the only lesions that can be detected from radiographic images...
June 23, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28643542/long-term-stability-of-splinted-anterior-mandibular-teeth-during-supportive-periodontal-therapy
#16
Sarah K Sonnenschein, Carlota Betzler, Maurice A Rütters, Johannes Krisam, Daniel Saure, Ti-Sun Kim
OBJECTIVE: The aim of the study was to retrospectively assess the survival rate and stability of periodontally compromised and mobile anterior mandibular teeth after splinting in patients under supportive periodontal therapy (SPT). MATERIALS AND METHODS: Thirty-nine patients with splinted anterior mandibular teeth and SPT (≥1 visit/year) for 3-15 years were re-examined. Periodontal status, patient and tooth-related factors were assessed retrospectively before (baseline) and 3 years after splinting (n = 39 patients, 162 splinted teeth)...
June 23, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28643401/novel-navigation-technique-for-the-endodontic-treatment-of-a-molar-with-pulp-canal-calcification-and-apical-pathology
#17
Xilin Shi, Shiyong Zhao, Weidong Wang, Qianzhou Jiang, Xuechao Yang
Apical periodontitis, the inflammation of periapical tissue, commonly requires root canal treatment to achieve apical healing. However, if it is accompanied by pulp canal calcification, the treatment becomes complicated, and locating the root canal can be challenging. This case report describes a novel approach for treating a molar with pulp canal calcification and apical pathology. Due to the risk of perforation during treatment, a digitally printed template was used to assist in accurately locating the root canal...
June 23, 2017: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/28643381/clinical-association-between-chronic-periodontitis-and-the-leukocyte-extravasation-inhibitors-developmental-endothelial-locus-1-and-pentraxin-3
#18
Matthias Folwaczny, Evangelia Karnesi, Tamara Berger, Ekaterini Paschos
This clinical study aimed to determine whether periodontal disease is associated with expression of developmental endothelial locus-1 (Del-1) and pentraxin-3 (PTX-3), endogenous inhibitors of leukocyte extravasation in humans. Expression of DEL1, PTX3, interleukin-17A (IL17A), and lymphocyte function-associated antigen-1 (LFA1) was determined, using RT-PCR and melting curve analysis, in biopsies of gingival tissues from 95 patients: 42 with moderate periodontitis; 40 with severe periodontitis; and 13 healthy controls...
June 23, 2017: European Journal of Oral Sciences
https://www.readbyqxmd.com/read/28642822/the-effect-of-concentrated-growth-factors-in-the-treatment-of-periodontal-intrabony-defects
#19
Jing Qiao, Jinyu Duan, Yong Zhang, Yi Chu, Changzhou Sun
AIM: To investigate the effect of concentrated growth factors (CGFs) in human intrabony defect treatment. METHODS: Thirty-one intrabony defects were randomly treated with CGFs + bovine porous bone mineral (BPBM) or BPBM alone. Probing depth, clinical attachment level and hard tissue fill were evaluated at baseline and 1 year post surgery. RESULTS: No differences in any of the investigated parameters were observed at baseline. At 1 year post therapy, both groups showed significant improvement in clinical parameters (p < 0...
December 2016: Future Science OA
https://www.readbyqxmd.com/read/28642531/evidence-summary-the-relationship-between-oral-diseases-and-diabetes
#20
F D'Aiuto, D Gable, Z Syed, Y Allen, K L Wanyonyi, S White, J E Gallagher
Introduction This paper is the third of four rapid reviews undertaken to explore the relationships between oral health and general medical conditions in order to support teams within Public Health England, health practitioners and policymakers.Aims This review aimed to explore the nature of the association between poor oral health and diabetes when found in the same individuals or populations, having reviewed the most contemporary evidence in the field.Methods The reviews were undertaken by four groups each comprising consultant clinicians from medicine and dentistry, trainees, public health and academics...
June 23, 2017: British Dental Journal
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