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Archives of Oral Biology

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https://www.readbyqxmd.com/read/28222389/correlation-between-ploidy-status-using-flow-cytometry-and-nucleolar-organizer-regions-in-benign-and-malignant-epithelial-odontogenic-tumors
#1
Sarah Ahmed Mohamed Mahmoud, Dalia Hussein El-Rouby, Safa Fathy Abd El-Ghani, Omnia Mohamed Badawy
OBJECTIVE: Differentiation between the aggressive benign odontogenic tumors and their malignant counterparts is controversial and difficult. While flow cytometry (FCM) allowed DNA analysis in neoplasia, argyrophilic organizer regions (AgNORs) number and/or size in a nucleus are correlated with the ribosomal gene activity and therefore with cellular proliferation. The aim of this research was to study the diagnostic accuracy of FCM and AgNORs staining in differentiating between benign and malignant epithelial odontogenic tumors and to correlate between these two interventions...
February 14, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28226300/from-periodontal-mechanoreceptors-to-chewing-motor-control-a-systematic-review
#2
REVIEW
Maria Grazia Piancino, Gaetano Isola, Rosangela Cannavale, Giuseppina Cutroneo, Giovanna Vermiglio, Pietro Bracco, Giuseppe Pio Anastasi
PURPOSE: This critical review summarizes the current knowledge of the structural and functional characteristics of periodontal mechanoreceptors, and understands their role in the signal pathways and functional motor control. METHOD: A systematic review of the literature was conducted. Original articles were searched through Pubmed, Cochrane Central database and Embase until january 2016. RESULT: 1466 articles were identified through database searching and screened by reviewing the abstracts...
February 13, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28214448/effect-of-fluoride-toothpaste-with-nano-sized-trimetaphosphate-on-enamel-demineralization-an-in-vitro-study
#3
Marcelle Danelon, Juliano Pelim Pessan, Francisco Nunes Souza-Neto, Emerson Rodrigues de Camargo, Alberto Carlos Botazzo Delbem
OBJECTIVE: This study evaluated the effect of toothpastes containing 1100ppm F associated or not with micrometric or nano-sized sodium trimetaphosphate (TMP) on enamel demineralization in vitro, using a pH cycling model. DESIGN: Bovine enamel blocks (4mm×4mm, n=96) were randomly allocated into eight groups (n=12), according to the test toothpastes: Placebo (without fluoride or TMP); 1100ppm F (1100F); 1100F plus micrometric TMP at concentrations of 1%, 3% or 6%; and 1100F plus nanosized TMP at 1%, 3% or 6%...
February 10, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28222388/microbial-profile-of-dental-plaque-associated-to-white-spot-lesions-in-orthodontic-patients-immediately-after-the-bracket-removal
#4
Moniek W Beerens, Jacob M Ten Cate, Monique H van der Veen
OBJECTIVE: Denaturing Gradient Gel Electrophoresis (DGGE) is suggested to predict caries risk in young children. Such a tool would be valuable in orthodontic patients undergoing treatment with fixed appliances. In this cross-sectional study the applicability of DGGE and conventional microbiology for caries risk assessment in orthodontic patients were assessed. DESIGN: Dental plaque was obtained from orthodontic patients immediately prior to bracket removal. Presence of white spot lesions (WSL) was assessed immediately post debracketing...
February 9, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28222387/baicalein-enhances-the-osteogenic-differentiation-of-human-periodontal-ligament-cells-by-activating-the-wnt-%C3%AE-catenin-signaling-pathway
#5
Li-Jiao Chen, Bi-Bo Hu, Xin-Lian Shi, Man-Man Ren, Wen-Bin Yu, Sheng-Dan Cen, Rong-Dang Hu, Hui Deng
OBJECTIVE: Periodontium regeneration is one of the most important processes for periodontitis therapy. Human periodontal ligament cells (hPDLCs) play a vital role in the repair and regeneration of periodontal tissues. Our study aimed to investigated the mechanisms underlying the promotion of hPLDCs osteogenic differentiation by baicalein. DESIGN: hPDLCs were obtained from periodontal ligament (PDL) tissues by primary culture. The MTT assay was used to determine the growth curves of hPDLCs treated with different concentrations of baicalein (1...
February 7, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28213172/diet-induced-obesity-gut-microbiota-and-bone-including-alveolar-bone-loss
#6
REVIEW
Sathima Eaimworawuthikul, Parameth Thiennimitr, Nipon Chattipakorn, Siriporn C Chattipakorn
Obesity is a major risk factor for several pathologies, including jaw bone resorption. The underlying mechanisms involved in pathological conditions resulting from obesity include chronic systemic inflammation and the development of insulin resistance. Although numerous studies have indicated the importance of the role of gut microbiota in the pathogenesis of inflammation and insulin resistance in obesity, only a few studies have established a relationship between obesity, gut microbiota and status of the jaw bone...
February 7, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28193569/analysis-of-the-expression-of-nlrp3-and-aim2-in-periapical-lesions-with-apical-periodontitis-and-microbial-analysis-outside-the-apical-segment-of-teeth
#7
Shujun Ran, Bin Liu, Shensheng Gu, Zhe Sun, Jingping Liang
OBJECTIVE: To detect the distribution and expression levels of the nucleotide-binding oligomerization domain-like receptor protein 3 (NLRP3) and the absent in Melanoma 2 (AIM2) inflammasomes in periapical lesions and to analyse the possible microbial stimuli outside of teeth. DESIGN: The distribution of NLRP3 and AIM2 inflammasomes in sixteen periapical lesions was investigated by immunohistochemistry. Meanwhile, the relative gene expression levels of NLRP3 and AIM2 in sixteen periapical lesions and three health periodontal tissue were quantified by real-time polymerase chain reaction (PCR)...
February 6, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28189882/differential-human-th22-lymphocyte-response-triggered-by-aggregatibacter-actinomycetemcomitans-serotypes
#8
Jaime Díaz-Zúñiga, Samanta Melgar-Rodríguez, Gustavo Monasterio, Myriam Pujol, Leticia Rojas, Carla Alvarez, Paola Carvajal, Rolando Vernal
OBJECTIVE: In Aggregatibacter actinomycetemcomitans, different serotypes have been described based on lipopolysaccharide (LPS) antigenicity. When T lymphocytes were stimulated with these serotypes, different patterns of T-helper (Th)1 and Th17-type of immune responses were reported. Recently, two new Th phenotypes have been described and named Th9 and Th22 lymphocytes; however, their role in the pathogenesis of periodontitis remains unclear. This study aimed to investigate the potential Th9 and/or Th22 lymphocyte responses when stimulated with autologous dendritic cells infected with different A...
February 6, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28189881/the-relationship-between-a-dolichofacial-morphology-and-bone-adaptation-of-the-articular-tubercle
#9
J H Koolstra, M C M Jongenburger, G R Landweer, N M B K Willems
OBJECTIVES: Against the background of a possibly compromised functional adaptation, the relationship between the height of the articular tubercle was analyzed as a function of the amount of divergence between the maxilla and the mandible. DESIGN: These parameters were obtained retrospectively from orthopantomograms and lateral radiographs produced in a standard procedure before orthodontic treatment. RESULTS: The height of the articular tubercle appeared to be significantly smaller in a group of patients with a dolichofacial morphology, with respect of those with an average (mesofacial) morphology...
February 6, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28189880/increased-melatonin-in-oral-mucosal-tissue-of-oral-lichen-planus-olp-patients-a-possible-link-between-melatonin-and-its-role-in-oral-mucosal-inflammation
#10
Kirawut Luengtrakoon, Worraned Wannakasemsuk, Vilasinee Vichitrananda, Poramaporn Klanrit, Doosadee Hormdee, Rajda Noisombut, Ponlatham Chaiyarit
OBJECTIVE: The existence of extra-pineal melatonin has been observed in various tissues. No prior studies of melatonin in human oral mucosal tissue under the condition of chronic inflammation have been reported. The aim of this study was to investigate the presence of melatonin in oral mucosal tissue of patients with oral lichen planus (OLP) which was considered as a chronic inflammatory immune-mediated disease causing oral mucosal damage and ulcerations. MATERIALS AND METHODS: Sections from formalin-fixed and paraffin-embedded oral mucosal tissue of OLP patients (n=30), and control subjects (n=30) were used in this study...
February 6, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28189884/expression-of-odontogenic-ameloblast-associated-protein-in-the-dental-follicle-and-its-role-in-osteogenic-differentiation-of-dental-follicle-stem-cells
#11
Shaomian Yao, Chunhong Li, Michael Beckley, Dawen Liu
OBJECTIVE: Odontogenic Ameloblast-Associated Protein (ODAM) is encoded by a secretory calcium-binding phosphoprotein cluster gene, which generally plays an important role for mineralization. Dental follicle (DF) is essential in regulating bone formation for tooth eruption. This study aims to reveal ODAM expression in the DFs of developing and erupting molars, and to determine the possible role of ODAM. DESIGN: DFs were collected from human third molars and rat mandibular molars for gene expression assessment and for establishment of cell cultures...
February 5, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28189883/antioxidant-capacity-of-human-saliva-and-periodontal-screening-assessment-in-healthy-adults
#12
Gianluca Martino Tartaglia, Nicoletta Gagliano, Luca Zarbin, Giorgia Tolomeo, Chiarella Sforza
OBJECTIVE: Saliva plays a pivotal role as an antioxidant system, and saliva antioxidant levels are reduced in patients with periodontal disease. Recently, a biochemical test able to determine saliva antioxidant levels was proposed as predictive for oral cavity diseases, but it was not clinically tested. In this preliminary study, we evaluated the relationships between Periodontal Screening and Recordings characteristics of patients and saliva antioxidant levels measures. DESIGN: Thirty-nine patients (12 men, 27 women; mean age, 46 years, SD 17) attending the dental hygiene unit of a Private Clinic underwent a Periodontal Screening and Recordings examination and a saliva antioxidant levels measurement using a biochemical commercial test...
February 5, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28199919/relationships-between-oral-muc1-expression-and-salivary-hormones-in-burning-mouth-syndrome
#13
Jeong-Hyun Kang, Yoon-Young Kim, Ji-Youn Chang, Hong-Seop Kho
OBJECTIVES: To investigate possible relationships among oral mucosal epithelial MUC1 expression, salivary female gonadal hormones and stress markers, and clinical characteristics in patients with burning mouth syndrome (BMS). DESIGN: Thirty post-menopausal female patients with BMS (60.0±5.0 years) were included. Clinical and psychological evaluations were performed and the expression level of oral mucosal epithelial MUC1 was analyzed. The levels of cortisol, dehydroepiandrosterone (DHEA), 17β-estradiol, progesterone, chromogranin A, and blood contamination were determined from unstimulated whole saliva (UWS) and stimulated whole saliva (SWS) samples...
February 4, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28193570/live-and-heat-killed-lactobacillus-spp-interfere-with-streptococcus-mutans-and-streptococcus-oralis-during-biofilm-development-on-titanium-surface
#14
E Ciandrini, R Campana, W Baffone
OBJECTIVES: This research investigates the ability of live and heat-killed (HK) Lactic Acid Bacteria (LAB) to interfere with Streptococcus mutans ATCC 25175 and Streptococcus oralis ATCC 9811 during biofilm formation. DESIGN: Eight Lactobacillus spp. and two oral colonizers, pathogenic Streptococcus mutans and resident Streptococcus oralis, were characterized for their aggregation abilities, cell surface properties and biofilm formation ability on titanium surface...
February 4, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28189030/does-green-tea-consumption-improve-the-salivary-antioxidant-status-of-smokers
#15
Somayyeh Azimi, Zahra Mansouri, Sedigheh Bakhtiari, Marc Tennant, Estie Kruger, Masoumeh Rajabibazl, Azam Daraei
OBJECTIVE: 
Considering the higher rate of oral cancer, and reduction in salivary antioxidants in smokers as indicated in previous studies, antioxidant- containing nutrients such as green tea, seem to be beneficial in counteracting against oxidative stress in this group. This study assessed the salivary total antioxidant alteration in smokers compared to nonsmokers, after short-tem (7days) and long-term (3 weeks), green tea drinking. DESIGN: In this experimental study, 20 volunteer moderate-to-heavy male smokers, and 20 matched healthy non-smokers were selected to participate, according to the inclusion criteria...
February 3, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28183007/thioredoxin-and-metallothionein-homeostasis-related-proteins-in-lip-carcinogenesis
#16
Patrícia C Caldeira, Laíssa S Silva, Aline C Batista, Maria Cássia F Aguiar
OBJECTIVE: Thioredoxin (Trx) and metallothionein (MT) are involved in the development of some carcinomas; however, the role of these proteins in labial carcinogenesis has not yet been tested. The aims of the study were to evaluate and to correlate the immunoexpression of Trx and MT in actinic cheilitis, lip squamous cell carcinoma, and normal vermillion lip mucosa. DESIGN: Immunohistochemistry was undertaken for Trx and MT in samples of actinic cheilitis, lip squamous cell carcinoma, and normal lip mucosa...
February 1, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28178586/the-relationship-between-insulin-resistance-and-periodontitis-is-not-affected-by-mediterranean-diet-in-a-spanish-population
#17
M Pulido-Moran, P Bullon, J M Morillo, M Battino, J L Quiles, MCarmen Ramirez-Tortosa
OBJETIVE: To examine the insulin resistance measured by surrogate indices in subjects with and without periodontitis and to find out any correlation among dietary intake with insulin resistance. DESIGN: Fifty-five patients were recruited to participate in this cross-sectional study. Insulin resistance measured by the homoeostasis model assessment (HOMA-IR) and the quantitative insulin sensitivity check index moreover glycaemia, creatinine, uric acid, high density lipoproteins, low density lipoproteins, very low density lipoproteins and triglycerides among others...
February 1, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28178587/top-down-hplc-esi-ms-proteomic-analysis-of-saliva-of-edentulous-subjects-evidenced-high-levels-of-cystatin-a-cystatin-b-and-sprr3
#18
Barbara Manconi, Barbara Liori, Tiziana Cabras, Federica Iavarone, Armando Manni, Irene Messana, Massimo Castagnola, Alessandra Olianas
OBJECTIVE: This study aims to analyze the salivary peptidome/proteome of edentulous subject with respect to dentate control subjects. DESIGN: Unstimulated whole saliva, collected from 11 edentulous subjects (age 60-76 years) and 11 dentate age-matched control subjects, was immediately treated with 0.2% aqueous trifluoroacetic acid and the acidic soluble fraction analyzed by High Performace Liquid Chromatography-Mass Spectrometry. The relative abundance of the salivary peptides/proteins was determined by measuring the area of the High Performace Liquid Chromatography-Mass Spectrometry eXtracted Ion Current peaks which is linearly proportional to peptide/protein concentration under identical experimental conditions...
January 31, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28167334/in-vitro-enamel-erosion-and-abrasion-inhibiting-effect-of-different-fluoride-varnishes
#19
Adílis Kalina Alexandria, Thiago Isidro Vieira, Matheus Melo Pithon, Tatiana Kelly da Silva Fidalgo, Andréa Fonseca-Gonçalves, Ana Maria Gondim Valença, Lúcio Mendes Cabral, Lucianne Cople Maia
OBJECTIVE: To investigate the erosion and abrasion inhibiting effect of CPP-ACP/NaF and xylitol/NaF varnishes. METHODS: Bovine enamel samples (n=40) were exposed to the following treatments (n=10): NaF varnish (Duraphat(®), positive control); CPP-ACP/NaF varnish (MI varnishTM); xylitol/NaF (Profluorid(®)) or distilled and deionized water (MilliQ(®), negative control). The samples were submitted for 3days to 4 cycles/day of erosion (5min in Sprite Zero) and 2 cycles of abrasion/day after the first and last erosive challenge, with a toothbrush machine and slurries of a placebo toothpaste for 15s (50 strokes/s)...
January 27, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28132717/corrigendum-to-chondroitin-sulfate-is-involved-in-the-hypercalcification-of-the-organic-matrix-of-bovine-peritubular-dentin-archives-of-oral-biology-62-2016-93-100
#20
Jason R Dorvee, Lauren Gerkowicz, Sara Bahmanyar, Alix Deymier-Black, Arthur Veis
No abstract text is available yet for this article.
January 26, 2017: Archives of Oral Biology
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