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https://www.readbyqxmd.com/read/28432824/brief-communication-an-analysis-of-dental-development-in-pleistocene-homo-using-skeletal-growth-and-chronological-age
#1
Maja Šešelj
OBJECTIVES: This study takes a new approach to interpreting dental development in Pleistocene Homo in comparison with recent modern humans. As rates of dental development and skeletal growth are correlated given age in modern humans, using age and skeletal growth in tandem yields more accurate dental development estimates. Here, I apply these models to fossil Homo to obtain more individualized predictions and interpretations of their dental development relative to recent modern humans...
April 22, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28419559/impact-of-the-global-burden-of-periodontal-diseases-on-health-nutrition-and-wellbeing-of-mankind-a-call-for-global-action
#2
Maurizio S Tonetti, Søren Jepsen, Lijian Jin, Joan Otomo-Corgel
BACKGROUND: The global burden of periodontal diseases remains high. Population growth trends, changes in risk factors and improved tooth retention will increase the socio-economic burden of periodontitis that is responsible for 3,5 million years lived with disability, 54 billion USD/year in lost productivity and a major portion of the 442 billion USD/year cost for oral diseases. METHODS: In the context of the Milan World Exhibition 2015 "Feeding the Planet, Energy for Life", a green paper was developed and offered for global consultation by the European Federation of Periodontology...
April 17, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28418109/sagittal-crest-formation-in-great-apes-and-gibbons
#3
Katharine L Balolia, Christophe Soligo, Bernard Wood
The frequency of sagittal crest expression and patterns of sagittal crest growth and development have been documented in hominoids, including some extinct hominin taxa, and the more frequent expression of the sagittal crest in males has been traditionally linked with the need for larger-bodied individuals to have enough attachment area for the temporalis muscle. In the present study, we investigate sagittal cresting in a dentally mature sample of four hominoid taxa (Pan troglodytes schweinfurthii, Gorilla gorilla gorilla, Pongo pygmaeus pygmaeus and Hylobates lar)...
April 18, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28415511/facile-synthesis-and-characterization-of-novel-rapid-setting-spherical-sub-micron-bioactive-glasses-cements-and-their-biocompatibility-in-vitro
#4
Yuli Li, Qiming Liang, Cai Lin, Xian Li, Xiaofeng Chen, Qing Hu
Dental pulp vitality is extremely important for the tooth viability, since it provides nutrition and forms the dentin. Bioactive glasses (BGs) may be promising materials for pulp repair due to their excellent abilities of rapidly bonding to bone and stimulating new bone growth. However, the unsatisfied handling property, low plasticity, and poor rapid-setting property of traditional BGs limit its application in vital pulp therapy. Spherical bioactive glasses (SBGs) exhibited higher osteogenesis and odontogenic differentiation than irregular BGs...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28413391/minocycline-induced-hyperpigmentation-in-a-patient-treated-with-erlotinib-for-non-small-cell-lung-adenocarcinoma
#5
Ann T Bell, John W Roman, Max L Gratrix, Christina E Brzezniak
INTRODUCTION: While epidermal growth factor receptor (EGFR) inhibitors have improved progression-free survival in patients with non-small cell lung cancer (NSCLC), one of the most common adverse effects is papulopustular skin eruption, which is frequently severe enough to be treated with oral minocycline or doxycycline. CASE: We present a case of an 87-year-old man who developed a severe papulopustular skin eruption secondary to erlotinib therapy for NSCLC. Control of the eruption with 100 mg of minocycline twice daily for 8 months eventually led to blue-gray skin hyperpigmentation...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28412234/premolar-autotransplantation-in-juvenile-dentition-quantitative-assessment-of-vertical-bone-and-soft-tissue-growth
#6
Inessa Michl, Dirk Nolte, Claudia Tschammler, Martin Kunkel, Robert Linsenmann, Johannes Angermair
OBJECTIVE: Premolar autotransplantation represents an effective therapeutic option for the treatment of juvenile dentition with either aquired or congenital hypodontia. The objective of this prospective clinical study was to quantitatively assess bone and soft tissue levels after autogenous premolar transplantation by clinical and radiographic parameters. STUDY DESIGN: In the study, 26 premolars were transplanted in 20 patients after traumatic tooth loss (n = 16) or congenital aplasia (n = 10) in the anterior maxilla...
February 22, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28407333/bioarchaeological-profile-of-stress-and-dental-disease-among-ancient-high-altitude-himalayan-communities-of-nepal
#7
Jacqueline T Eng, Mark Aldenderfer
OBJECTIVES: This study examines biological indicators of dental disease and nonspecific stress in human remains of three high altitude Himalayan archaeological sites to test whether shared ecological constraints led to similar bioarchaeological profiles in these markers. METHODS: Samples (n = 170) derive from three sites in Nepal dating to two periods (400-50 BCE and c. 400-650 CE). Dental diseases (caries, antemortem tooth loss, and abscesses) were assessed by both the number of individuals and the number of elements observed, while childhood stress markers included observation of growth disruptions (enamel hypoplasia and adult femur length/stature) and cranial porosities...
April 13, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/28397663/-a-rare-type-of-severe-obesity-in-children-and-adolescents
#8
Sara Østergaard Christensen, Kirsten Holm, Hanne Buciek Hove
A four-year-old girl was referred to a paediatric department with low height, obesity and hypothyroidism. Her paraclinical tests were characteristic with elevated P-parathyroid hormone concentration, hypothyroidism, growth hormone deficiency, abnormal phenotype with brachydactyly, tooth problems and mental retardation, which led to a suspicion of Albright's hereditary osteodystrophy (AHO). The diagnosis was verified by molecular genetic testing. Less than 1% of children with obesity have an endocrine disorder, and AHO is one of them...
February 20, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28388515/long-term-observation-of-a-large-keratocystic-odontogenic-tumour-of-the-mandible-treated-by-a-single-enucleation-procedure-a-case-report-and-literature-review
#9
Tobias L Pittl, Marius Meier, Paul Hakl, Walter Sutter, Dritan Turhani
INTRODUCTION: Keratocystic odontogenic tumours (KCOTs) are benign lesions of the jaw that are characterised by expansive growth and high rates of recurrence. Herein, we present a novel minimally invasive method for the surgical treatment of KCOTs. CASE PRESENTATION: We present a 49-year-old woman with a rare, large KCOT of the mandible extending from tooth 37 to tooth 47. A single enucleation procedure was selected as the surgical technique combined with a titanium plate...
March 23, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28387098/-the-importance-of-pulp-therapy-in-deciduous-teeth
#10
REVIEW
A Bolette, S Truong, A Guéders, S Geerts
Preserving primary teeth is crucial for maintaining the maxillary growth, aesthetics, mastication, and speech and for preventing from abnormal habits. Given the peculiar anatomy of the primary tooth, caries grow faster and more frequently to the pulp. In pediatric dentistry, new methods and enhanced material have been recently released on the market and broadened the field of treatments. In this paper, we review the pulp diseases affecting children and focus on the current root canal therapies that favour the physiological primary tooth loss...
December 2016: Revue Médicale de Liège
https://www.readbyqxmd.com/read/28361336/setting-the-light-conditions-for-measuring-root-transparency-for-age-at-death-estimation-methods
#11
Joe Adserias-Garriga, Laia Nogué-Navarro, Sara C Zapico, Douglas H Ubelaker
Age-at-death estimation is one of the main goals in forensic identification, being an essential parameter to determine the biological profile, narrowing the possibility of identification in cases involving missing persons and unidentified bodies. The study of dental tissues has been long considered as a proper tool for age estimation with several age estimation methods based on them. Dental age estimation methods can be divided into three categories: tooth formation and development, post-formation changes, and histological changes...
March 30, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28361313/functional-tooth-regeneration
#12
Masamitsu Oshima, Miho Ogawa, Takashi Tsuji
Three-dimensional organogenesis in vivo is principally regulated by the spatiotemporal developmental process that relies on the cellular behavior such as cell growth, migration, differentiation, and cell-to-cell interaction. Organ development and morphogenesis have been elucidated to be regulated by the proper transient expression of various signaling molecules including cytokines, extracellular matrix, and adhesion molecules based on the epithelial and mesenchymal interactions. Current bioengineering technology for regenerating three-dimensional organ has progressed to the replication of organogenesis, thereby enabling the development of fully functional bioengineered organs using bioengineered organ germs that are generated from immature stem cells via tissue engineering technology in vitro...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28356682/dental-implants-in-children-a-multidisciplinary-perspective-for-long-term-success
#13
REVIEW
Nidhi Agarwal, Dipanshu Kumar, Ashish Anand, Surendrakumar Kaluram Bahetwar
Congenital hypodontia or trauma is a frequent cause of loss of teeth in children. The absence of teeth leads to loss of function and lack of normal alveolar growth, along with unpleasant esthetics that hamper the psychosocial development of the young child. Traditionally, the management of tooth loss in the young child is done by conservative means. None of those methods of treatment are completely satisfactory and have their own drawbacks. Dental implants in a young child would be an ideal mode of treatment for the absence of teeth...
July 2016: National Journal of Maxillofacial Surgery
https://www.readbyqxmd.com/read/28356216/novel-dental-adhesive-with-triple-benefits-of-calcium-phosphate-recharge-protein-repellent-and-antibacterial-functions
#14
Xianju Xie, Lin Wang, Dan Xing, Ke Zhang, Michael D Weir, Huaibing Liu, Yuxing Bai, Hockin H K Xu
OBJECTIVE: A new adhesive containing nanoparticles of amorphous calcium phosphate (NACP) with calcium (Ca) and phosphate (P) ion rechargeability was recently developed; however, it was not antibacterial. The objectives of this study were to: (1) develop a novel adhesive with triple benefits of Ca and P ion recharge, protein-repellent and antibacterial functions via dimethylaminohexadecyl methacrylate (DMAHDM) and 2-methacryloyloxyethyl phosphorylcholine (MPC); and (2) investigate dentin bond strength, protein adsorption, Ca and P ion concentration, microcosm biofilm response and pH properties...
March 26, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28353319/early-childhood-caries-a-review
#15
Jinfeng Liu, Hongwei Wu, Wei Wang
Early childhood tooth problems are associated with variations in intrauterine and postnatal growth. Both premature and delayed timing of this physiological process might be a manifestation of local and/or systemic alterations. Presently, most clinicians agree that teething does not serious cause life taking pathological state, however, they disagree about reasons responsible for tooth eruption. The distinctive clinical presentation of dental caries in infants and toddlers, which is often known as early childhood caries (ECC), and are influenced by the eruption sequence of the primary dentition...
March 27, 2017: Minerva Pediatrica
https://www.readbyqxmd.com/read/28345658/nephronectin-plays-critical-roles-in-sox2-expression-and-proliferation-in-dental-epithelial-stem-cells-via-egf-like-repeat-domains
#16
Chieko Arai, Keigo Yoshizaki, Kanako Miyazaki, Kan Saito, Aya Yamada, Xue Han, Keita Funada, Emiko Fukumoto, Naoto Haruyama, Tsutomu Iwamoto, Ichiro Takahashi, Satoshi Fukumoto
Tooth development is initiated by epithelial-mesenchymal interactions via basement membrane (BM) and growth factors. In the present study, we found that nephronectin (Npnt), a component of the BM, is highly expressed in the developing tooth. Npnt localizes in the BM on the buccal side of the tooth germ and shows an expression pattern opposite that of the dental epithelial stem cell marker Sox2. To identify the roles of Npnt during tooth development, we performed knockdown and overexpression experiments using ex vivo organ and dental epithelial cell cultures...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28344574/health-associated-niche-inhabitants-as-oral-probiotics-the-case-of-streptococcus-dentisani
#17
Arantxa López-López, Anny Camelo-Castillo, María D Ferrer, Áurea Simon-Soro, Alex Mira
Oral diseases, including dental caries and periodontitis, are among the most prevalent diseases worldwide and develop as a consequence of a microbial dysbiosis. Several bacterial strains are being tested as potential oral health-promoting organisms, but usually they are species isolated from niches other than the site where they must exert its probiotic action, typically from fecal samples. We hypothesize that oral inhabitants associated to health conditions will be more effective than traditional, gut-associated probiotic species in key aspects such as colonization of the oral site where disease takes place or the possession of oral health promoting functions, as well as more practical issues like safety and toxicity, and establishing proper doses for administration...
2017: Frontiers in Microbiology
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
#18
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/28318312/evidence-favoring-a-secular-reduction-in-mandibular-leeway-space
#19
Tyler R Allen, Terry M Trojan, Edward F Harris
OBJECTIVE: Researchers have documented secular trends in tooth size among recent generations. This study was a test for a change in mandibular leeway space. MATERIALS AND METHODS: Dental casts from participants in the Denver Growth Study (23 boys, 22 girls; born in the 1930s) were compared with casts from a contemporary series of orthodontic patients (23 boys, 22 girls; born in the 1990s). All were phenotypically normal, healthy American whites. RESULTS: Analysis of variance (accounting for sex) showed that the cumulative mandibular primary canine plus first and second primary molar size (c + m1 + m2) was slightly larger in the recent cohort (23...
March 20, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28318153/-dental-alveolar-bone-and-dental-arch-remodeling-in-children-orthodontic-diagnosis-and-treatments-based-on-individual-child-arch-development
#20
Li Xiaobing
The etiology of malocclusions basically involves both congenital and environmental factors. Malocclusion is the result of the abnormal development of the orofacial complex (including tooth, dental alveolar bone, upper and lower jaws). Early orthodontic interceptive treatments involve the elimination of all congenital and environmental factors that contribute to the malformation of the orofacial complex, as well as interrupt the deviated development of the orofacial complex and the occlusion. Early orthodontic interceptive treatments mainly aim to use children's growth potential to correct abnormal developments of occlusions and orthodontically treat malocclusions more efficiently...
December 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
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