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https://www.readbyqxmd.com/read/27935196/an-in-vitro-evaluation-of-human-enamel-surfaces-subjected-to-erosive-challenge-after-bleaching
#1
Maria de Fátima Carvalho Vasconcelos, Andréa Fonseca-Gonçalves, Adílis Kalina Alexandria de França, Urubatan Vieira de Medeiros, Lucianne Cople Maia, Celso Silva Queiroz
OBJECTIVES: This study aimed to evaluate whether tooth enamel bleached with hydrogen peroxide (H2 O2 ) is more susceptible to erosion when compared with unbleached tooth enamel; and whether the presence of calcium (Ca) in the bleaching gel influenced this process. MATERIALS AND METHODS: Enamel blocks were prepared from human molars, and submitted to surface microhardness analysis (baseline). Blocks were prepared and randomly divided into four treatment groups (n = 20): G1 and G2-bleached with 7...
December 9, 2016: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/27928950/molecular-and-pharmaceutical-aspects-of-novel-methods-and-materials-for-the-prevention-of-tooth-structure-loss
#2
Laurence J Walsh
In the past decade, a range of dental products have appeared which make advertising claims around preventing mineral loss or repairing mineral loss. This review examines the requirements for effective protection of tooth structure, and the evidence around technologies now available for preventing tooth structure loss and repairing demineralized enamel, ranging from tooth surface protection and enhanced fluoride uptake through to calcium compounds, unstabilized amorphous calcium phosphate, tricalcium phosphate, and casein phosphopeptide - amorphous calcium phosphate...
December 7, 2016: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/27928242/dental-management-of-a-child-with-dentinogenesis-imperfecta-a-case-report
#3
Najmeh Akhlaghi, Ali-Reza Eshghi, Mehrnaz Mohamadpour
Dentinogenesis imperfecta (DI) is a hereditary dentin defect caused by an autosomal dominant mutation in dentin sialophosphoprotein gene. Defective dentin development results in discolored teeth that are prone to wear and fracture. Early diagnosis and proper treatment are necessary to achieve better functional and esthetic results and minimize nutritional deficiencies and psychosocial distress. In order to prevent excessive loss of tooth structure, placement of stainless steel crowns (SSCs) on deciduous and young permanent posterior teeth is recommended as soon as such teeth erupt...
March 2016: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/27926988/prognosis-of-teeth-in-the-line-of-jaw-fractures
#4
Kamaldeep K Aulakh, Tejinder Kaur, Sumeet Sandhu
BACKGROUND/AIM: The decision as to whether teeth in the line of jaw fractures should be extracted or retained remains a controversial issue. The aim of this study was to assess the prognosis of teeth directly in the line of, and adjacent to jaw fracture sites. MATERIALS AND METHODS: The study consisted of 50 patients with facial fractures in the dentate region, the diagnosis of which was made on the basis of clinical and radiographic examinations. A total of 124 teeth were present in 69 fracture sites (50 patients), of which 89 teeth were evaluated both, clinically (tooth mobility, pocket depth, pulp sensibility) and with periapical radiographs (degree of fracture displacement, marginal bone loss, root resorption)...
December 7, 2016: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/27924851/senescence-novel-insight-into-dlx3-mutations-leading-to-enhanced-bone-formation-in-tricho-dento-osseous-syndrome
#5
Na Zhao, Dong Han, Haochen Liu, Yue Li, Sing-Wai Wong, Zhengyi Cao, Jian Xu, Xiaowei Zhang, Tao Cai, Yixiang Wang, Hailan Feng
The homeodomain transcription factor distal-less homeobox 3 gene (DLX3) is required for hair, tooth and skeletal development. DLX3 mutations have been found to be responsible for Tricho-Dento-Osseous (TDO) syndrome, characterized by kinky hair, thin-pitted enamel and increased bone density. Here we show that the DLX3 mutation (c.533 A>G; Q178R) attenuates osteogenic potential and senescence of bone mesenchymal stem cells (BMSCs) isolated from a TDO patient, providing a molecular explanation for abnormal increased bone density...
December 7, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27919226/molar-loss-and-powder-diet-leads-to-memory-deficit-and-modifies-the-mrna-expression-of-brain-derived-neurotrophic-factor-in-the-hippocampus-of-adult-mice
#6
Yosuke Takeda, Hiroshi Oue, Shinsuke Okada, Akira Kawano, Katsunori Koretake, Makoto Michikawa, Yasumasa Akagawa, Kazuhiro Tsuga
BACKGROUND: It is known that tooth loss is known to be a risk factor for Alzheimer's disease and soft diet feeding induces memory impairment. Recent studies have shown that brain-derived neurotrophic factor (BDNF) is associated with tooth loss or soft diet in young animal model, and that BDNF expression is decreased in patients with Alzheimer's disease. However, single or combined effect of tooth loss and/or soft diet on brain function has not fully understood. Here we examined the effect of molar loss and powder diet on memory ability and the expression of BDNF mRNA in the hippocampus of adult C57BL/6J mice...
December 5, 2016: BMC Neuroscience
https://www.readbyqxmd.com/read/27909893/osteogain%C3%A2-loaded-onto-an-absorbable-collagen-sponge-induces-attachment-and-osteoblast-differentiation-of-st2-cells-in-vitro
#7
Richard J Miron, Masako Fujioka-Kobayashi, Yufeng Zhang, Anton Sculean, Benjamin Pippenger, Yoshinori Shirakata, Umadevi Kandalam, Maria Hernandez
OBJECTIVES: Dimensional changes of the alveolar bone following tooth extraction are a major challenge in daily dental practice. To limit bone loss, a variety of biomaterials including bone grafts, barrier membranes, and growth factors have been utilized either alone or in combination therapies to increase the speed and quality of new bone formation. The aim of the present in vitro study was to investigate the regenerative potential of Osteogain®, a new liquid carrier system of enamel matrix derivative (EMD) in combination with an absorbable collagen sponge (ACS) specifically designed for extraction socket healing...
December 1, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27908460/influence-of-oral-hygiene-and-its-interaction-with-standard-of-education-on-the-risk-of-oral-cancer-in-women-who-neither-smoked-nor-drank-alcohol-a-hospital-based-case-control-study
#8
F Chen, B-C He, L-J Yan, Y Qiu, L-S Lin, L Cai
We know of only limited data about the role of oral hygiene and the risk of oral cancer with different standards of education. The aim of this study was to assess the association between oral hygiene and risk of oral cancer, with stratification by standard of education, in Chinese women. We organised a case-control study with 250 women with oral cancer and 996 age-matched controls in Fujian, China. Data were collected by personal interview using a structured questionnaire. We used unconditional logistic regression with stratification by educational standard to estimate the odds ratios (OR) and 95% CI...
November 28, 2016: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/27903250/effectiveness-of-bovine-derived-xenograft-versus-bioactive-glass-with-periodontally-accelerated-osteogenic-orthodontics-in-adults-a-randomized-controlled-clinical-trial
#9
Maha A Bahammam
BACKGROUND: Periodontally accelerated osteogenic orthodontics (PAOO) combines periodontal therapy with orthodontic therapy, which minimises treatment time. This study compared the effectiveness of a bovine-derived xenograft with that of bioactive glass when combined with PAOO for the treatment of adult patients with moderate crowding of the teeth. METHODS: In this prospective, single-masked clinical trial, 33 orthodontic patients (20 women, 13 men; mean age 21.2 ± 1...
November 30, 2016: BMC Oral Health
https://www.readbyqxmd.com/read/27902609/influence-of-oral-health-behavior-and-sociodemographic-factors-on-remaining-teeth-in-korean-adults-2010-2012-korea-national-health-and-nutrition-examination-survey
#10
In-Seok Song, Kyungdo Han, Yeon-Jo Choi, Jae-Jun Ryu, Jun-Beom Park
In this study, the number and location of remaining teeth were analyzed according to sociodemographic variables, anthropometric measurements, and oral health behavior patterns. The hypothesis was that the number and location of remaining teeth would be affected by oral health behavior and by sociodemographic factors, such as education levels, household income, and urban/rural residency.This nationwide cross-sectional study was performed with a total of 36,026 representative Korean adults aged 19 and older. The data were taken from the 2012-2012 Korea National Health and Nutrition Examination Survey...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27894521/effect-of-3-cements-on-white-spot-lesion-formation-after-full-coverage-rapid-maxillary-expander-a-comparative-in-vivo-study
#11
Ahmet Yagci, Yasemin Nur Korkmaz, Filiz Yagci, Aykan Onur Atilla, Suleyman Kutalmiş Buyuk
INTRODUCTION: The aim of this study was to assess the effects of 3 luting agents (glass ionomer cement, compomer, and polycarboxylate cement) on white spot lesion formation in patients with full-coverage bonded acrylic splint expanders. White spot lesion formation was assessed with quantitative light-induced fluorescence. METHODS: Full-coverage rapid maxillary expanders were cemented with glass ionomer cement, compomer, and polycarboxylate cement in groups 1, 2, and 3, respectively...
December 2016: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/27893154/withdrawn-occlusal-interventions-for-periodontitis-in-adults
#12
REVIEW
Paul Weston, Yuhaniz A Yaziz, David R Moles, Ian Needleman
BACKGROUND: Occlusal interventions may be used in adults with periodontitis. At present there is little consensus regarding the indications and effectiveness of occlusal interventions in periodontal patients. OBJECTIVES: To identify and analyse the evidence for the effect of occlusal interventions on adults who have periodontitis in relation to tooth loss, probing depths, clinical attachment level, adverse effects and patient-centred outcomes. SEARCH METHODS: The search was last conducted in April 2008...
November 28, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27892626/withdrawn-root-canal-posts-for-the-restoration-of-root-filled-teeth
#13
REVIEW
Marc Bolla, Michele Muller-Bolla, Cybele Borg, Laurence Lupi-Pegurier, Olivier Laplanche, Eric Leforestier
BACKGROUND: The foundation for the reconstruction of endodontically-treated teeth can be provided by a metal or a non-metal post and core system but no guidelines exist for choosing one or the other in particular clinical cases. OBJECTIVES: To assess the effectiveness of different post and core systems for the restoration of endodontically-treated teeth. The primary objective of this review was to compare the clinical failure rates of the different types of posts...
November 28, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27891585/novel-mutations-in-kars-cause-hypertrophic-cardiomyopathy-and-combined-mitochondrial-respiratory-chain-defect
#14
Daniela Verrigni, Daria Diodato, Michela Di Nottia, Alessandra Torraco, Emanuele Bellacchio, Teresa Rizza, Giulia Tozzi, Margherita Verardo, Fiorella Piemonte, Giorgio Tasca, Adele D'Amico, Enrico Bertini, Rosalba Carrozzo
Mutations in KARS, which encodes for both mitochondrial and cytoplasmic lysyl-tRNA synthethase, have been so far associated with three different phenotypes: the recessive form of Charcot Mary-Tooth polyneuropathy, the autosomal recessive non-syndromic hearing loss and the last recently described condition related to congenital visual impairment and progressive microcephaly. Here we report the case of a 14-years-old-girl with severe cardiomyopathy associated to mild psychomotor delay and mild myopathy; moreover, a diffuse reduction of cytochrome C oxidase (COX, complex IV) and a combined enzymatic defect of complex I (CI) and IV (CIV) was evident in muscle biopsy...
November 28, 2016: Clinical Genetics
https://www.readbyqxmd.com/read/27886383/permanent-tooth-loss-and-sugar-sweetened-beverage-intake-in-u-s-young-adults
#15
Sunkyung Kim, Sohyun Park, Mei Lin
OBJECTIVE: In young adults, sugar-sweetened beverage (SSB) intake is associated with dental caries, which in turn is a major contributor to tooth loss. The independent role of SSB intake on tooth loss, however, has not been well-described. This cross-sectional study examined associations between tooth loss and SSB intake among U.S. young adults. METHODS: The outcome was number of permanent teeth lost because of dental caries or periodontal disease (0, 1-5, ≥6 teeth)...
November 25, 2016: Journal of Public Health Dentistry
https://www.readbyqxmd.com/read/27883212/a-retrospective-study-on-periodontal-disease-progression-in-private-practice
#16
Luigi Nibali, Chuanming Sun, Aliye Akcalı, Xsuan Meng, Yu-Kang Tu, Nikos Donos
BACKGROUND: Only a handful of studies have assessed tooth loss risk in chronic periodontitis patients following active therapy and factors associated with it. AIMS: The aim of this retrospective study was to assess tooth loss in a cohort of chronic periodontitis patients undergoing maintenance care in a UK private practice setting. MATERIALS AND METHODS: One hundred chronic periodontitis patients treated with active periodontal therapy (APT) were followed up in supportive periodontal therapy (SPT) for at least 5 years...
November 24, 2016: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/27883211/tissue-changes-after-ridge-preservation-with-two-xenografts-preliminary-results-from-a-multicenter-randomized-controlled-clinical-trial
#17
Antonio Barone, Paolo Toti, Alessandro Quaranta, Fortunato Alfonsi, Alessandro Cucchi, Bruno Negri, Roberto Di Felice, Saverio Marchionni, Jose' Luis Calvo-Guirado, Ugo Covani, Ulf Nannmark
OBJECTIVES: To evaluate and compare clinical and histological changes after ridge preservation procedures with those of spontaneous healing. MATERIALS_AND_METHODS: Ninety patients were enrolled in the present randomized controlled clinical trial and underwent single-tooth extraction in the premolar/molar areas. Thirty sites were grafted with collagenated cortico-cancellous (coll), 30 sites with cortical (cort) porcine bone and 30 sites underwent natural healing. Primary (vertical and horizontal bone changes after 3-month) and secondary outcomes (histomorphometric after 3 months) were evaluated at implant placement...
November 24, 2016: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/27881326/minimally-invasive-prosthetic-restoration-of-posterior-tooth-loss-with-resin-bonded-wing-retained-and-inlay-retained-fixed-dental-prostheses-fabricated-from-monolithic-zirconia-a-clinical-report-of-two-patients
#18
Wolfgang Bömicke, Jochen Karl, Peter Rammelsberg
The esthetics and biocompatibility of ceramic resin-bonded fixed dental prostheses (RBFDPs) are regarded as better than those of their metal ceramic counterparts. However, a high incidence of complications in the posterior arches of ceramic RBFDPs initiated a process of continuous and evolving design development. This clinical report describes 2 successful restorations of a missing posterior tooth with monolithic zirconia RBFDPs with 2 different retainer designs: retentively prepared adhesive wings and inlays...
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27876716/-the-relationship-of-molecular-genetic-markers-with-clinical-signs-and-risk-factors-of-periodontitis
#19
O A Zorina, N K Aimadinova, A A Basova, D V Rebrikov
The study revealed positive correlation between bleeding on probing and teeth loss risk with periodontal hypercolonization by Porphyromonas gingivalis, Prevotella intermedia and Treponema denticola. Pathological tooth mobility was associated with hypercolonization by P. intermedia and Tannerella forsythensis. Expression of IL8, TNF-α, MMP8 and MMP9 genes was also assessed in patient groups divided according to the depth of periodontal pockets and-the severity of chronic periodontitis revealing IL8 as positive diagnostic marker...
2016: Stomatologii︠a︡
https://www.readbyqxmd.com/read/27871699/evaluation-of-enamel-demineralization-in-adolescents-after-rapid-maxillary-expansion-using%C3%A2-the-quantitative-light-induced-fluorescence%C3%A2-method-a-single-center-randomized-controlled-clinical-trial
#20
Asli Baysal, Seher Nazlı Ulusoy, Tancan Uysal
INTRODUCTION: The aim of this 2-arm parallel trial was to evaluate enamel demineralization after rapid maxillary expansion (RME) compared with an untreated control group using quantitative light-induced fluorescence. METHODS: Thirty-six patients who needed RME as part of their orthodontic treatment were separated randomly into either the control group or the intervention group (RME). Eligibility criteria included crossbite, no previous orthodontic treatment, no systemic disease, and all permanent teeth erupted except second and third molars...
November 2016: American Journal of Orthodontics and Dentofacial Orthopedics
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