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Dental enamel hypoplasia

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https://www.readbyqxmd.com/read/27908555/dental-pathology-of-the-hoary-marmot-marmota-caligata-groundhog-marmota-monax-and-alaska-marmot-marmota-broweri
#1
J N Winer, B Arzi, D M Leale, P H Kass, F J M Verstraete
Museum specimens (maxillae and mandibles) of the three marmot species occurring in Alaska (Marmota caligata [n = 108 specimens], Marmota monax [n = 30] and Marmota broweri [n = 24]) were examined macroscopically according to predefined criteria. There were 71 specimens (43.8%) from female animals, 69 (42.6%) from male animals and 22 (13.6%) from animals of unknown sex. The ages of animals ranged from neonatal to adult, with 121 young adults (74.4%) and 41 adults (25.3%) included, and 168 excluded from study due to neonatal/juvenile age or incompleteness of specimens (missing part of the dentition)...
November 28, 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27848202/prevalence-of-enamel-defects-and-association-with-dental-caries-in-preschool-children
#2
C Massignan, M Ximenes, C da Silva Pereira, L Dias, M Bolan, M Cardoso
AIM: This was to evaluate the prevalence of the developmental defects of enamel (DDE) in primary teeth and its association with dental caries. METHODS: A cross-sectional study with a randomised representative sample was carried out with 1101 children aged 2-5 years enrolled in public preschools (50% prevalence of DDE in primary teeth, a standard error of 3%, and a confidence level of 95%). Three calibrated dentists (K > 0.62) performed clinical examination...
November 15, 2016: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/27778394/use-of-new-targeted-cancer-therapies-in-children-effects-on-dental-development-and-risk-of-jaw-osteonecrosis-a-review
#3
Magali Hernandez, Bérengère Phulpin, Ludovic Mansuy, Dominique Droz
New targeted cancer therapies such as bisphosphonates, denosumab and bevacizumab are routinely used in adult for the past decades. Their introduction into pediatric medicine is more recent that means there is a paucity of data on long-term effects on dental development and on the risk of osteonecrosis of jaw. This paper aims to outline adverse effects of new targeted cancer therapies on oral cavity including dental abnormalities observed in pediatric population treated with these molecules and the risk of osteonecrosis of the jaw (ONJ)...
October 25, 2016: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/27760456/dlx3-dependent-regulation-of-ion-transporters-and-carbonic-anhydrases-is-crucial-for-enamel-mineralization
#4
Olivier Duverger, Takahiro Ohara, Paul W Bible, Angela Zah, Maria I Morasso
Patients with Tricho-Dento-Osseous syndrome, an ectodermal dysplasia caused by mutations in the homeodomain transcription factor DLX3, exhibit enamel hypoplasia and hypomineralization. Here we used a conditional knockout mouse model to investigate the developmental and molecular consequences of Dlx3 deletion in the dental epithelium in vivo. Dlx3 deletion in the dental epithelium resulted in the formation of chalky hypomineralized enamel in all teeth. Interestingly, transcriptomic analysis revealed that major enamel matrix proteins and proteases known to be involved in enamel secretion and maturation were not affected significantly by Dlx3 deletion in the enamel organ...
October 19, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/27696357/disturbances-and-noise-defining-furrow-form-enamel-hypoplasia
#5
E Bocaege, S Hillson
OBJECTIVES: The investigation of the record of growth locked in dental enamel provides a unique opportunity to build a comprehensive picture of growth disruption episodes during childhood. This study presents a new methodological basis for the analysis of enamel growth disruptions (enamel hypoplasia) using incremental microstructures of enamel. METHODS: A three-dimensional technique based upon use of an Alicona 3D Infinite Focus imaging microscope and software is used to record developmental features in the enamel of human permanent mandibular lateral incisors of one individual from the Neolithic site of Çatalhöyük (Turkey)...
December 2016: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/27692425/orthodontic-treatment-and-follow-up-of-a-patient-with-cerebral-palsy-and-spastic-quadriplegia
#6
Muhsin Çifter, Nil Cura
INTRODUCTION: This report describes the clinical orthodontic management of a patient with spastic quadriplegia and cerebral palsy. Guidelines to overcome difficulties encountered during the treatment period are suggested. METHODS: A 13-year-old boy with cerebral palsy and spastic quadriplegia complained of an undesirable oral appearance because of his malocclusion. He had a Class II molar relationship, with severe maxillary and moderate mandibular anterior crowding...
October 2016: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/27689858/long-term-effect-of-chemotherapy-intensity-modulated-radiation-therapy-chemo-imrt-on-dentofacial-development-in-head-and-neck-rhabdomyosarcoma-patients
#7
Adepitan A Owosho, Paul Brady, Suzanne L Wolden, Leonard H Wexler, Cristina R Antonescu, Joseph M Huryn, Cherry L Estilo
Dentofacial developmental abnormalities have been reported in head and neck rhabdomyosarcoma (HNRMS) patients treated with conventional radiotherapy technique and chemotherapy. This current study investigates dentofacial long-term effects among HNRMS survivors managed with intensity-modulated radiotherapy (IMRT) and chemotherapy. In general, IMRT is a more effective 3D-conformal radiotherapy technique, which delivers high doses of radiation to the tumor target while minimizing doses received by the surrounding normal tissues...
September 2016: Pediatric Hematology and Oncology
https://www.readbyqxmd.com/read/27643784/dental-enamel-defects-in-german-medieval-and-early-modern-age-populations
#8
J Lang, S Birkenbeil, S Bock, R Heinrich-Weltzien, K Kromeyer-Hauschild
Aim of this study was to investigate the frequency and type of developmental defects of enamel (DDE) in a medieval and an early-modern-age population from Thuringia, Germany. Sixty-six skeletons subdivided into 31 single burials (12(th)/13(th) c.) and 35 individuals buried in groups (15(th)/16(th) c.) were examined. DDE were classified on 1,246 teeth according to the DDE index. Molar-incisor-hypomineralisation (MIH), a special type of DDE, was recorded according to the European Academy of Paediatric Dentistry (EAPD) criteria...
August 25, 2016: Anthropologischer Anzeiger; Bericht über die Biologisch-anthropologische Literatur
https://www.readbyqxmd.com/read/27617510/a-rare-case-epidermolysis-bullosa-in-a-child-patient-with-amelogenesis-imperfecta
#9
H Karayilmaz, Öe Güngör, S Hanimeli, B Yagmur
Epidermolysis bullosa (EB) is an inherited disorder affecting the skin and mucous membranes, characterized by blister formation following minor trauma. It is a chronic mechanobullous disease related to the specific abnormal or absent proteins. The disease is associated with conspicuous clinical and oral manifestations. The oral involvement of EB includes generalized enamel hypoplasia, dental caries, limited mouth opening, ankyloglossia, microstomia and obliteration of the vestibule. Amelogenesis imperfecta (AI) is a hereditary disorder with dental enamel defects and enamel hypoplasia both in deciduous and permanent dentition...
February 26, 2016: West Indian Medical Journal
https://www.readbyqxmd.com/read/27599287/enamel-hypoplasia-challenges-of-esthetic-restorative-treatment
#10
Vanessa Carla Ruschel, Élito Araújo, Jussara Karina Bernardon, Guilherme Carpena Lopes
Enamel defects, such as white or yellow-brown spots, usually cause problems that are more esthetic than functional. Enamel hypoplasia may be the result of hereditary, systemic, or local factors. Dental trauma is a local etiologic factor. It is relatively common in the primary dentition and can cause defects on the surface of permanent successors. Treatment for such defects can differ, depending on the depth of the spots. For deeper white-spot lesions, a composite resin restoration may be necessary. This is an excellent mode of treatment, due to both its low cost and its conservation of healthy tooth structure...
September 2016: General Dentistry
https://www.readbyqxmd.com/read/27530539/dental-and-temporomandibular-joint-pathology-of-the-walrus-odobenus-rosmarus
#11
J N Winer, B Arzi, D M Leale, P H Kass, F J M Verstraete
Maxillae and/or mandibles from 76 walruses (Odobenus rosmarus) were examined macroscopically according to predefined criteria. The museum specimens were acquired between 1932 and 2014. Forty-five specimens (59.2%) were from male animals, 29 (38.2%) from female animals and two (2.6%) from animals of unknown sex, with 58 adults (76.3%) and 18 young adults (23.7%) included in this study. The number of teeth available for examination was 830 (33.6%); 18.5% of teeth were absent artefactually, 3.3% were deemed to be absent due to acquired tooth loss and 44...
August 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27508165/application-of-quantitative-light-induced-fluorescence-to-determine-the-depth-of-demineralization-of-dental-fluorosis-in-enamel-microabrasion-a-case-report
#12
Tae-Young Park, Han-Sol Choi, Hee-Won Ku, Hyun-Su Kim, Yoo-Jin Lee, Jeong-Bum Min
Enamel microabrasion has become accepted as a conservative, nonrestorative method of removing intrinsic and superficial dysmineralization defects from dental fluorosis, restoring esthetics with minimal loss of enamel. However, it can be difficult to determine if restoration is necessary in dental fluorosis, because the lesion depth is often not easily recognized. This case report presents a method for analysis of enamel hypoplasia that uses quantitative light-induced fluorescence (QLF) followed by a combination of enamel microabrasion with carbamide peroxide home bleaching...
August 2016: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/27475682/impact-of-rare-diseases-in-oral-health
#13
A Molina-García, L Castellanos-Cosano, G Machuca-Portillo, M Posada-de la Paz
BACKGROUND: Rare diseases (RD) are those that present a lower prevalence than 5 cases per 10.000 population. The main objective of this review was to study the effect on oral health in rare diseases, while the secondary objective of the study is theme upgrade. MATERIAL AND METHODS: Comparative observational case-control studies were analysed and a systematic review was conducted in PubMed. Each rare disease listed on the statistical data record of the Health Portal of the Ministry of Equality, Health and Social Policies Board of Andalusia was associated with "oral health"...
2016: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/27430583/prevalence-of-developmental-dental-hard-tissue-anomalies-and-association-with-caries-and-oral-hygiene-status-of-children-in-southwestern-nigeria
#14
Bamidele O Popoola, Nneka Onyejaka, Morenike O Folayan
BACKGROUND: Developmental dental hard tissue anomalies are often associated with oral health problems. This study determined the clinical prevalence of developmental dental hard tissue anomalies in the permanent dentition of children resident in southwestern Nigeria and its association with dental caries and poor oral hygiene status. METHODS: This was a cross-sectional study recruiting 1565 school children, 12 to 15 year old attending schools in Ibadan, Oyo State and Ile-Ife, Osun State...
2016: BMC Oral Health
https://www.readbyqxmd.com/read/27384690/rare-case-of-nephrocalcinosis-in-a-14-year-old-girl-questions
#15
Omar Bjanid, Piotr Adamczyk, Małgorzata Stojewska, Dagmara Roszkowska-Bjanid, Magdalena Paszyna-Grześkowiak, Agnieszka Jędzura, Joanna Oświęcimska, Katarzyna Ziora, Aurelia Morawiec-Knysak, Maria Szczepańska
A 14-year-old Caucasian girl with a history of primary hypoparathyroidism and unstable calcium and phosphorus levels and on ongoing treatment was admitted to the Department of Pediatric Nephrology because of the onset of nephrocalcinosis and difficulties achieving normocalcemia. Coexistence of hypoparathyroidism, oral candidiasis, dental enamel hypoplasia, and subclinical Hashimoto's disease was strongly suggestive for autoimmune polyglandular syndrome (APS) type I. One of the clinical implications of this diagnosis is the high probability of future occurrence of adrenal insufficiency and hence the importance of maintaining a high level of suspicion in case of the onset of symptoms like weakness, fainting, hypotonia, or hyperkaliemia...
July 6, 2016: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/27325544/oral-and-craniofacial-manifestations-of-ellis-van-creveld-syndrome-case-series
#16
Elif Bahar Tuna, Mine Koruyucu, Esma Kürklü, Muhsin Çifter, Koray Gençay, Figen Seymen, Beyhan Tüysüz
PURPOSE: The objective of this case series was to determine the oral, dental and craniofacial features of patients with EvC syndrome. MATERIAL AND METHODS: Eight patients with EvC syndrome were enrolled. A complete family history, pedigree analysis, detailed medical history were collected. Findings of clinical examination, including craniofacial and orodental manifestations, and radiological investigations were thoroughly studied. RESULTS: All eight patients had characteristic face, hypertrophic frenulum, conical and peg-shaped teeth, hypodontia of deciduous and/or permanent teeth and also skeletal dysplasia, small chest, short stature and hypoplastic nails...
August 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/27146935/oculodentodigital-dysplasia
#17
Dharmil C Doshi, Purvi K Limdi, Nilesh V Parekh, Neepa R Gohil
Oculodentodigital dysplasia is a rare, autosomal dominant disorder with high penetrance and variable expressivity, caused by mutations in the connexin 43 or gap junction protein alpha-1 gene. It has been diagnosed in fewer than 300 people worldwide with an incidence of around 1 in 10 million. It affects many parts of the body, particularly eyes (oculo), teeth (dento), and fingers and/or toes (digital). The common clinical features include facial dysmorphism with thin nose, microphthalmia, syndactyly, tooth anomalies such as enamel hypoplasia, anodontia, microdontia, early tooth loss and conductive deafness...
March 2016: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/27011929/prevalence-of-the-developmental-defects-of-the-enamel-in-children-aged-12-15-years-in-kollam-district
#18
Rathy Ravindran, Ajish M Saji
AIM AND OBJECTIVES: To determine the prevalence of developmental defects of enamel in children aged 12-15 years in Kollam district and to examine the etiological factors associated with the developmental defects of the enamel (DDE). MATERIALS AND METHODS: A total of 2,500 children from 10 urban and 10 rural schools were examined using modified DDE criteria for recording enamel defects. Ten index permanent teeth were screened for the DDE. RESULTS: The overall prevalence of the DDE was found to be 32% and the prevalence is higher in urban schools (34...
January 2016: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/26923345/correlations-between-initial-cleft-size-and-dental-anomalies-in-unilateral-cleft-lip-and-palate-patients-after-alveolar-bone-grafting
#19
Fatima Jabbari, Erika Reiser, Andreas Thor, Malin Hakelius, Daniel Nowinski
Objective To determine in individuals with unilateral cleft lip and palate the correlation between initial cleft size and dental anomalies, and the outcome of alveolar bone grafting. Methods A total of 67 consecutive patients with non-syndromic unilateral complete cleft lip and palate (UCLP) were included from the cleft lip and palate-craniofacial center, Uppsala University Hospital, Sweden. All patients were operated by the same surgeon and treated according to the Uppsala protocol entailing: lip plasty at 3 months, soft palate closure at 6 months, closure of the residual cleft in the hard palate at 2 years of age, and secondary alveolar bone grafting (SABG) prior to the eruption of the permanent canine...
2016: Upsala Journal of Medical Sciences
https://www.readbyqxmd.com/read/26895178/developmental-and-post-eruptive-defects-in-molar-enamel-of-free-ranging-eastern-grey-kangaroos-macropus-giganteus-exposed-to-high-environmental-levels-of-fluoride
#20
Uwe Kierdorf, Clare Death, Jasmin Hufschmid, Carsten Witzel, Horst Kierdorf
Dental fluorosis has recently been diagnosed in wild marsupials inhabiting a high-fluoride area in Victoria, Australia. Information on the histopathology of fluorotic marsupial enamel has thus far not been available. This study analyzed the developmental and post-eruptive defects in fluorotic molar enamel of eastern grey kangaroos (Macropus giganteus) from the same high-fluoride area using light microscopy and backscattered electron imaging in the scanning electron microscope. The fluorotic enamel exhibited a brownish to blackish discolouration due to post-eruptive infiltration of stains from the oral cavity and was less resistant to wear than normally mineralized enamel of kangaroos from low-fluoride areas...
2016: PloS One
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