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Dental genetics

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https://www.readbyqxmd.com/read/28429476/periodontal-disease-and-the-special-needs-patient
#1
REVIEW
Louise F Brown, Pauline J Ford, Anne L Symons
Individuals with special needs are at more risk of dental disease, including periodontal diseases, and have a greater prevalence and incidence of periodontal diseases than the rest of the population. Genetic or medical conditions, and/or the use of prescription medication or recreational substances, may further increase the risk for susceptibility to periodontal disease. The success of preventing or controlling periodontal diseases amongst this group of patients has not been established. Even those individuals who access regular and comprehensive dental care appear to develop periodontal diseases as they age, and this development occurs at a rate comparable to the natural history of the disease...
June 2017: Periodontology 2000
https://www.readbyqxmd.com/read/28427322/dental-pulp-pluripotent-like-stem-cells-dppsc-a-new-stem-cell-population-with-chromosomal-stability-and-osteogenic-capacity-for-biomaterials-evaluation
#2
Raquel Núñez-Toldrà, Ester Martínez-Sarrà, Carlos Gil-Recio, Miguel Ángel Carrasco, Ashraf Al Madhoun, Sheyla Montori, Maher Atari
BACKGROUND: Biomaterials are widely used to regenerate or substitute bone tissue. In order to evaluate their potential use for clinical applications, these need to be tested and evaluated in vitro with cell culture models. Frequently, immortalized osteoblastic cell lines are used in these studies. However, their uncontrolled proliferation rate, phenotypic changes or aberrations in mitotic processes limits their use in long-term investigations. Recently, we described a new pluripotent-like subpopulation of dental pulp stem cells derived from the third molars (DPPSC) that shows genetic stability and shares some pluripotent characteristics with embryonic stem cells...
April 21, 2017: BMC Cell Biology
https://www.readbyqxmd.com/read/28422132/haploinsufficiency-for-ankrd11-flanking-genes-makes-the-difference-between-kbg-and-16q24-3-microdeletion-syndromes-12-new-cases
#3
Francesca Novara, Berardo Rinaldi, Sanjay M Sisodiya, Antonietta Coppola, Sabrina Giglio, Franco Stanzial, Francesco Benedicenti, Alan Donaldson, Joris Andrieux, Rachel Stapleton, Astrid Weber, Paolo Reho, Conny van Ravenswaaij-Arts, Wilhelmina S Kerstjens-Frederikse, Joris Robert Vermeesch, Koenraad Devriendt, Carlos A Bacino, Andrée Delahaye, S M Maas, Achille Iolascon, Orsetta Zuffardi
16q24 deletion involving the ANKRD11 gene, ranging from 137 kb to 2 Mb, have been associated with a microdeletion syndrome characterized by variable cognitive impairment, autism spectrum disorder, facial dysmorphisms with dental anomalies, brain abnormalities essentially affecting the corpus callosum and short stature. On the other hand, patients carrying either deletions encompassing solely ANKRD11 or its loss-of-function variants were reported in association with the KBG syndrome, characterized by a very similar phenotype, including mild-to-moderate intellectual disability, short stature and macrodontia of upper incisors, with inter and intrafamilial variability...
April 19, 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28407984/review-allergic-contact-stomatitis
#4
REVIEW
Liviu Feller, Neil Hamilton Wood, Razia Abdool Gafaar Khammissa, Johan Lemmer
Allergic contact stomatitis (ACS) is an oral mucosal immunoinflammatory disorder variably characterized clinically by erythematous plaques, vesiculation, ulceration, and/or hyperkeratosis and by pain, burning sensation, or itchiness. ACS is brought about by a T cell-mediated, delayed hypersensitivity immune reaction generated by a second or subsequent contact exposure of an allergen with the oral mucosa, in a genetically susceptible, sensitized subject. Lichenoid contact reaction is a variant of ACS brought about by direct contact with the oral mucosa of certain metals in dental restorations...
May 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28406124/comparison-of-patients-with-and-without-intellectual-disability-under-general-anesthesia-a-retrospective-study
#5
T Sitilci, S Demirgan, C Akcay, N Kahraman, B G Koseoglu, M A Erdem, A B Cankaya
BACKGROUND AND PURPOSE: We analyzed and retrospectively compared patients with and without intellectual disability (ID) who underwent oral surgery under general anesthesia at Istanbul University, Faculty of Dentistry, Department of General Anesthesia, between October 2012 and June 2013 with regard to the following categories: Demographic features, American Society of Anesthesiologists (ASA) classification, Mallampati score, type of anesthetic drug used during the operation, type of intubation used, any difficulties with tracheal intubation, presence of systemic diseases, and recovery times after ending general anesthesia...
April 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28395292/genes-involved-in-the-enamel-development-are-associated-with-calcium-and-phosphorus-level-in-saliva
#6
Erika Calvano Küchler, Giovana Daniela Pecharki, Myrella Lescio Castro, Junia Ramos, Fernando Barbosa, João Armando Brancher, Alexandre Rezende Vieira, Raquel Fernanda Gerlach, Paula Cristina Trevilatto
Saliva components play a crucial role in the integrity of the dental enamel and in caries susceptibility. The saliva characteristics are controlled by many factors, including genetic factors. Therefore, this study aimed to evaluate the association between the genetic variations in genes expressed in enamel development with calcium and phosphorus levels in saliva. We collected 276 unrelated 12-year-old children from private and public schools. Saliva was collected for DNA extraction from oral cells and for measurement of calcium and phosphorus...
April 11, 2017: Caries Research
https://www.readbyqxmd.com/read/28387295/the-impact-of-inflammatory-bowel-disease-on-oral-health
#7
J S Chandan, T Thomas
Inflammatory bowel disease (IBD) mainly comprises of two separate inflammatory conditions: Crohn's disease (CD) and ulcerative colitis (UC). The aetiology of these conditions is still being explored with current evidence pointing towards a combination of environmental and genetic components. However, the pathophysiology is understood as a cytokine driven inflammatory response. There is significant association between IBD and dental conditions such as dental caries, other infections and periodontitis. Anti-inflammatory medications such as 5 aminosalicylic acid (5ASA), steroids and biological therapies are the treatment of choice for these chronic conditions, dependent on aetiology...
April 7, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28383598/genetic-relatedness-of-peri-implants-and-buccal-candida-albicans-isolates-determined-by-rapd-pcr
#8
Adriana M Bertone, Alcira C Rosa, Natalia Nastri, Hector D Santillán, Yamila Ariza, Cristina A Iovannitti, Virginia M Jewtuchowicz
Molecular techniques have been used in recent studies to identify a wide range of potential bacterial pathogens in periimplant pockets of the oral cavity. However, the prevalence and molecular epidemiology of yeasts and species distribution related to periimplantitis are as yet unknown. The aim of this study was to determine the prevalence and distribution of yeasts in periimplant biofilm and to study genetic relatedness of Candida albicans. Yeasts recovered from periimplant biofilm samples (n=89) and buccal samples (n=120) were studied in 40 immunocompetent nonsmoking patients who visited the dental clinic of the Asociación Implantodontológica Argentina, Buenos Aires, Argentina, and had received oral rehabilitation with implants for more than five years...
December 2016: Acta Odontológica Latinoamericana: AOL
https://www.readbyqxmd.com/read/28382719/ancient-mitochondrial-dna-and-ancestry-of-paquim%C3%A3-inhabitants-casas-grandes-a-d-1200-1450
#9
Ana Y Morales-Arce, Meradeth H Snow, Jane H Kelley, M Anne Katzenberg
OBJECTIVES: The Casas Grandes (Paquimé) culture, located in the Northwest of Chihuahua, Mexico reached its apogee during the Medio Period (A.D. 1200-1450). Paquimé was abandoned by the end of the Medio Period (A.D. 1450), and the ancestry of its inhabitants remains unsolved. Some authors suggest that waves of Mesoamerican immigrants, possibly merchants, stimulated Paquimé's development during the Medio Period. Archaeological evidence suggests possible ties to groups that inhabited the Southwestern US cultures...
April 6, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28382465/significance-of-genetic-variations-in-developmental-enamel-defects-of-primary-dentition-in-polish-children
#10
Karolina Gerreth, Katarzyna Zaorska, Maciej Zabel, Michal Nowicki, Maria Borysewicz-Lewicka
OBJECTIVES: The aim of the study was to reveal the association between developmental defects of enamel (DDE) and single nucleotide polymorphisms (SNPs) in the ENAM, AMELX, AMBN, TUFT1, and TFIP11 genes. MATERIAL AND METHODS: The molecular analysis was carried out in 52 children, aged 10-42 months, from four nursery schools situated in the region of Poznan, Poland (26 individuals with hypomineralization and/or hypoplasia of enamel - "cases" and 26 unaffected children - "controls"), chosen from 262 individuals that had prior dental examination...
April 5, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28381879/tfap2b-mutation-and-dental-anomalies
#11
Natchaya Tanasubsinn, Rekwan Sittiwangkul, Yupada Pongprot, Katsushige Kawasaki, Atsushi Ohazama, Thanapat Sastraruji, Massupa Kaewgahya, Piranit Nik Kantaputra
Mutations inTFAP2B has been reported in patients with isolated patent ductus arteriosus (PDA) and Char syndrome. We performed mutation analysis of TFAP2B in 43 patients with isolated PDA, 7 patients with PDA with other congenital heart defects and 286 patients with isolated tooth agenesis with or without other dental anomalies. The heterozygous c.1006G>A mutation was identified in 20 individuals. Those mutation carriers consisted of 1 patient with term PDA (1/43), 16 patients with isolated tooth agenesis with or without other dental anomalies (16/286; 5...
April 6, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28381371/condylar-geometry-variation-is-associated-with-enpp1-variant-in-a-population-of-patients-with-dento-facial-deformities
#12
Marion Constant, Romain Nicot, Alexandre R Vieira, Gwenael Raoul, James J Sciote, Joel Ferri
PURPOSE: Bone remodeling is essential in maintaining bone health. Considering that ENPP1 contributes to bone geometry and bone mineralization, the aim of our study was to analyze the association between single-nucleotide polymorphisms (SNPs) of ENPP1 and condylar remodeling. MATERIALS AND METHODS: A total of 156 patients undergoing orthodontic and maxillofacial surgery treatment for correction of malocclusion were included in this prospective study. Saliva samples from all subjects were used for DNA extraction and genotyping...
March 8, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28380079/asymmetry-in-dentition-and-shape-of-pharyngeal-arches-in-the-clonal-fish-chrosomus-eos-neogaeus-phenotypic-plasticity-and-developmental-instability
#13
Christelle Leung, Kevin Karl Duclos, Thomas Grünbaum, Richard Cloutier, Bernard Angers
The effect of the environment may result in different developmental outcomes. Extrinsic signals can modify developmental pathways and result in alternative phenotypes (phenotypic plasticity). The environment can also be interpreted as a stressor and increase developmental instability (developmental noise). Directional and fluctuating asymmetry provide a conceptual background to discriminate between these results. This study aims at assessing whether variation in dentition and shape of pharyngeal arches of the clonal fish Chrosomus eos-neogaeus results from developmental instability or environmentally induced changes...
2017: PloS One
https://www.readbyqxmd.com/read/28358285/external-apical-root-resorption-concurrent-with-orthodontic-forces-the-genetic-influence
#14
Nuria Nieto-Nieto, Jose Enrique Solano, Rosa Yañez-Vico
Root resorption is a pathological process of multifactorial origin related to the permanent loss of dental root structure in response to a mechanical, inflammatory, autoimmune or infectious stimulus. External apical root resorption (EARR) is a frequent clinical complication secondary to orthodontic tooth movement; apart from variables related to treatment, environmental factors and/or interindividual genetic variations can confer susceptibility or resistance to its occurrence. In this context, genetic predisposition has been described as an etiological factor, together with mechanical factors derived from orthodontic treatment...
May 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28348596/genetic-association-of-mmp10-mmp14-and-mmp16-with-dental-caries
#15
D D Lewis, J R Shaffer, E Feingold, M Cooper, M M Vanyukov, B S Maher, R L Slayton, M C Willing, S E Reis, D W McNeil, R J Crout, R J Weyant, S M Levy, A R Vieira, M L Marazita
Matrix metalloproteinases (MMPs), which degrade extracellular proteins as part of a variety of physiological processes, and their inhibitors have been implicated in the dental caries process. Here we investigated 28 genetic variants spanning the MMP10, MMP14, and MMP16 genes to detect association with dental caries experience in 13 age- and race-stratified (n = 3,587) samples from 6 parent studies. Analyses were performed separately for each sample, and results were combined across samples by meta-analysis...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28348592/polymorphisms-of-il-10-1082-and-rankl-438-genes-and-the-failure-of-dental-implants
#16
Rodrigo Ribeiro, Rayanne Melo, Pedro Tortamano Neto, André Vajgel, Paulo Roberto Eleutério Souza, Renata Cimões
Background. Genetic polymorphisms in certain cytokines and chemokines have been investigated to understand why some individuals display implant flaws despite having few risk factors at the time of implant. Purpose. To investigate the association of genetic polymorphisms in interleukin- (IL-) 10 [-1082 region (A/G)] and RANKL [-438 region (A/G)] with the failure of dental implants. Materials and Methods. This study included 90 partially edentulous male and female patients who were rehabilitated with a total of 245 Straumann dental implants...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28343232/genetic-polymorphisms-in-defb1-and-mirna202-are-involved-in-salivary-human-%C3%AE-defensin-1-levels-and-caries-experience-in-children
#17
Andrea Lips, Leonardo Santos Antunes, Lívia Azeredo Antunes, Júlia Guimarães Barcellos de Abreu, Driely Barreiros, Daniela Silva Barroso de Oliveira, Ana Carolina Batista, Paulo Nelson-Filho, Léa Assed Bezerra da Silva, Raquel Assed Bezerra da Silva, Gutemberg Gomes Alves, Erika Calvano Küchler
The antimicrobial peptides human β-defensins (hBDs) are encoded by β-defensin genes (DEFBs) and are possibly involved in caries susceptibility. In this study we aimed (1) to investigate the relationship between salivary hBDs and caries and (2) to evaluate the association of genetic polymorphisms in DEFB1 and microRNA202 (miRNA202) with salivary levels of hBDs and caries experience. Two data sets were available for this study, totalizing 678 Brazilian children. Dental examination and saliva collection were performed in all included children...
March 25, 2017: Caries Research
https://www.readbyqxmd.com/read/28342734/integration-of-microbiome-and-epigenome-to-decipher-the-pathogenesis-of-autoimmune-diseases
#18
REVIEW
Beidi Chen, Luxi Sun, Xuan Zhang
The interaction between genetic predisposition and environmental factors are of great significance in the pathogenesis and development of autoimmune diseases (AIDs). The human mucosa is the most frequent site that interacts with the exterior environment, and commensal microbiota at the gut and other human mucosal cavities play a crucial role in the regulation of immune system. Growing evidence has shown that the compositional and functional changes of mucosal microbiota are closely related to AIDs. Gut dysbiosis not only influence the expression level of Toll-like receptors (TLRs) of antigen presenting cells, but also contribute to Th17/Treg imbalance...
March 23, 2017: Journal of Autoimmunity
https://www.readbyqxmd.com/read/28338720/from-teeth-to-baleen-and-raptorial-to-bulk-filter-feeding-in-mysticete-cetaceans-the-role-of-paleontological-genetic-and-geochemical-data-in-feeding-evolution-and-ecology
#19
Annalisa Berta, Agnese Lanzetti, Eric G Ekdale, Thomas A Deméré
The origin of baleen and filter feeding in mysticete cetaceans occurred sometime between approximately 34 and 24 million years ago and represents a major macroevolutionary shift in cetacean morphology (teeth to baleen) and ecology (raptorial to filter feeding). We explore this dramatic change in feeding strategy by employing a diversity of tools and approaches: morphology, molecules, development, and stable isotopes from the geological record. Adaptations for raptorial feeding in extinct toothed mysticetes provide the phylogenetic context for evaluating morphological apomorphies preserved in the skeletons of stem and crown edentulous mysticetes...
December 16, 2016: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/28338025/preventing-perioperative-bleeding-in-patients-with-inherited-bleeding-disorders
#20
Colin Watterson, Nicholas Beacher
Data sourcesCochrane Cystic Fibrosis and Genetic Disorders Group's Coagulopathies Trials Register, a regularly updated database informed by trials identified within electronic databases including MEDLINE. Further defined searches were undertaken in PubMed, Embase, The Cochrane Library, ClinicalTrials.gov and WHO International Clinical Trials Registry Platform. Additional hand searching of relevant journals and books of conference proceedings was undertaken.Study selectionRandomised and quasi-randomised controlled trials in people of all ages with haemophilia or VWD undergoing oral or dental procedures using antifibrinolytic agents (tranexamic acid (TXA) or epsilon aminocaproic acid (EACA)) to prevent perioperative bleeding compared to no intervention with or without placebo...
March 2017: Evidence-based Dentistry
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