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Tooth

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https://read.qxmd.com/read/32248615/treatment-after-inadequate-immediate-replantation-of-accidentally-extracted-immature-mandibular-premolar-during-primary-molar-extraction
#1
Jelena Juloski, Maja Dimitrijevic, Jovana Juloski, Ivana Radovic
During extraction of the primary mandibular right second molar in an 11-year old girl, the unerupted second premolar was accidentally extracted. Clinical and radiographic examination showed that the immediately replanted immature premolar was not oriented and positioned correctly. Four hours later, treatment consisted of manual extrusion of the permanent tooth bud, rotation and gentle repositioning into its original position. Adequate replantation was confirmed by a post-operative radiograph. After two years and four months clinical examination revealed normal, healthy appearance of the replanted tooth, no sensitivity to percussion, no tenderness to palpation, and a slight response to a cold pulp sensibility test...
April 5, 2020: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://read.qxmd.com/read/32248585/digital-occlusal-analysis-of-vertical-dimension-and-maximum-intercuspal-position-after-placement-of-stainless-steel-crown-using-hall-technique-in-children
#2
Karthik Nair, C Nagarathna, Swetha Poovani, Prafulla Thumati
BACKGROUND: The stainless steel crowns (SSCs) placed using the Hall technique disrupts the occlusion, but stabilization appears to occur within a short period post placement. Negligible understanding and comprehension is presently handy about the changes in overbite and bite force after placement of stainless steel crown using the hall technique in children. AIM/ HYPOTHESIS: To evaluate the digital occlusal analysis of vertical dimension and maximum intercuspal position to understand the changes in overbite and bite force after placement of stainless steel crown using the hall technique...
April 5, 2020: International Journal of Paediatric Dentistry
https://read.qxmd.com/read/32248172/association-between-rankl-rs9594759-and-il10-rs1800896-genes-polymorphism-and-deciduous-tooth-eruption-terms-in-ukrainians-born-macrosomic
#3
Olga V Garmash, Zoia I Rossokha, Nataliya G Gorovenko
OBJECTIVE: The aim: The article deals with analyzing the influence of polymorphic variants of CYP19A1 [rs2414096, rs936306], ESR1 [rs2234693, rs9340799], IL1 [rs1143627], IL6 [rs1800796], IL10 [rs1800896] and RANKL [rs959389] genes on deciduous tooth eruption terms in individuals born macrosomic. PATIENTS AND METHODS: Materials and methods: 171 individuals participated in the multi-stage study (144 macosomic-at-birth individuals and 27 normosomic-at-birth persons)...
2020: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://read.qxmd.com/read/32247438/obturation-and-tissue-transfer-for-large-craniofacial-defects
#4
REVIEW
Curtis D Schmidt, Stavan Y Patel, Jennifer E Woerner, Ghali E Ghali
Reconstruction of large craniofacial defects requires several factors to be considered before deciding on the best reconstructive option. This article discusses various factors taken into consideration when deciding on which reconstructive option is ideal for a given patient and defect. For large craniofacial defects, reconstruction using tissue transfer is considered preferentially over obturation, although in select defects obturation using a traditional tooth- or implant-borne prosthetic obturator can be considered a viable option...
May 2020: Oral and Maxillofacial Surgery Clinics of North America
https://read.qxmd.com/read/32246860/are-australian-parents-following-feeding-guidelines-that-will-reduce-their-child-s-risk-of-dental-caries
#5
Jacqueline Martin-Kerry, Mark Gussy, Lisa Gold, Hanny Calache, Rachel Boak, Michael Smith, Andrea de Silva
BACKGROUND: Early childhood is an important time to establish eating behaviours and taste preferences, and there is strong evidence of the association between the early introduction of sugar-sweetened beverages and obesity and dental caries (tooth decay). Dental caries early in life predicts lifetime caries experience and worldwide expenditure for dental caries is high. METHODS: Questionnaire data from the Splash! longitudinal birth cohort study of young children in Victoria, Australia was used to examine beverage consumption and parental feeding behaviours of young children, aiming to provide contemporary dietary data and assess consistency with the Australian dietary guidelines...
April 4, 2020: Child: Care, Health and Development
https://read.qxmd.com/read/32246767/guest-editorial-clarifications-on-the-use-of-the-new-classification-of-periodontitis
#6
EDITORIAL
Mariano Sanz, Panos N Papapanou, Maurizio S Tonetti, Henry Greenwell, Ken Kornman
This editorial provides clarifications on the application of the Stage and Grade classification of periodontitis. In particular it describes: i) how to apply the extent criterion to the defined Stage of the disease; and ii) how to calculate tooth loss due to periodontitis in Stage III and IV cases presenting with evidently hopeless (irrational to treat) teeth with a clinical definition of such teeth. This article is protected by copyright. All rights reserved.
April 4, 2020: Journal of Periodontology
https://read.qxmd.com/read/32246697/evaluating-the-fracture-resistance-of-fiber-reinforced-composite-restorations-an-in-vitro-analysis
#7
Arun Kumar Patnana, Narasimha Rao V Vanga, Rajasekhar Vabbalareddy, Srinivas Kumar Chandrabhatla
Background: Laboratory reports show that fiber-reinforced composites have improved fracture resistance over traditional composites. However, limitations in the biomechanics of tests to evaluate the fracture resistance of fiber-reinforced composites need to be considered for accurate clinical applications. Aim: To assess the fracture resistance of particulate filler composites, glass fiber-reinforced composites, and polyethylene-fiber reinforced composites by analyzing the different fracture types and failure patterns...
January 2020: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://read.qxmd.com/read/32246695/erosive-effect-of-milk-honey-cereal-porridge-and-millet-porridge-on-enamel-of-primary-teeth-an-in-vitro-study
#8
Theresa Sam Cherian, Priya Subramaniam, Megha Gupta
Context: Enamel erosion is manifested as partial demineralization occurring at the enamel surface leading to increased surface roughness. Diets comprising milk, cereals, and millets are frequently fed to infants and toddlers. These foods are prepared so as to make them soft in texture, palatable, and easy to ingest. Aim: To determine the erosive effect of milk, honey, and porridges made from cereal and millet on primary tooth enamel. Settings and Design: Exfoliated caries-free primary teeth were collected, and a total of 50 longitudinal sections were prepared...
January 2020: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://read.qxmd.com/read/32246690/sexual-dimorphism-of-mental-foramen-position-in-peruvian-subjects-a-cone-beam-computed-tomography-study
#9
Yalil Augusto Rodríguez-Cárdenas, Manuel Casas-Campana, Luis Ernesto Arriola-Guillén, Aron Aliaga-Del Castillo, Gustavo Armando Ruiz-Mora, Maria Eugenia Guerrero
Background: The position of the mental foramen (MF) is particularly relevant in dentistry. The incorporation of new imaging techniques, such as cone-beam-computed tomography (CBCT), can be used to identify anatomic dimorphic traits. Aims: This study evaluated the sexual dimorphism of MF position by CBCT among a selected population. Methods: Fifty CBCT images from 20 to 40-year-old subjects (25 men and 25 women) were evaluated. The horizontal position was evaluated using the al Jasser-Nwoku classification to identify the position of the MF in the mandible...
January 2020: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://read.qxmd.com/read/32246678/age-estimation-by-assessment-of-dentin-translucency-in-permanent-teeth
#10
Jigna S Shah, Ashish F Ranghani, Piyush G Limdiwala
Aim: : To estimate the age by evaluating the length of dentin translucency in ground sections of extracted teeth using digital scanner and tools of GIMP 2.8 software for dental age estimation. Materials and Methods: Fifty extracted single-rooted permanent teeth from 50 different individuals and their 0.25-mm thick sections were prepared. Each tooth section was scanned and the length of dentin translucency was measured in GIMP 2.8 software. Results: A linear relationship was observed between dentin translucency and age in the regression analysis...
January 2020: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://read.qxmd.com/read/32246674/beak-and-bumper-physics-forceps-evaluation-of-new-technique-in-extraction
#11
K Raghu, S R Selvakumar, Ramsay Muthukumar, A Thangavelu, R Sathyanarayanan, Murali Mani, Murali Balasubramaniam
Purpose: The history of dentistry is not short; it started from ancient Egypt to ancient Romans and ancient Greeks. When it comes to extraction, all of them have made their own discoveries and progress. The progress they made also helped dentistry to move ahead in evolution of new extraction technique - the Physics Forceps. We have assessed the viability in using the Physics Forceps for routine dental extraction in our study for a period of 1 year. Materials and Methods: The study was conducted on 241 patients indicated for extraction based on our inclusion criteria using Physics Forceps after obtaining informed consent and University Ethics Committee approval...
January 2020: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://read.qxmd.com/read/32246667/comparison-of-biochemical-markers-of-bone-metabolism-between-conventional-labial-and-lingual-fixed-orthodontic-appliances
#12
A N Gujar, H A Baeshen, A Alhazmi, M S Ghoussoub, A T Raj, S Bhandi, S C Sarode, K H Awan, D Birkhed, S Patil
Objectives: The applied orthodontic force causes remodeling of the periodontium through the selective release of cytokines causing resorption of bone, enabling controlled movement of the tooth. This study compared the cytokine profile between patients treated with conventional labial and lingual fixed orthodontic appliances. Patients and Methods: The study included 80 patients in need of orthodontic treatment, out of which 40 patients were treated by the labial fixed appliance and 40 by the lingual fixed appliance...
April 2020: Nigerian Journal of Clinical Practice
https://read.qxmd.com/read/32246661/prevalence-of-middle-mesial-and-middle-distal-canals-in-mandibular-molars-in-an-egyptian-subpopulation-using-micro-computed-tomography
#13
M K Alashiry, R Zeitoun, M M Elashiry
Objectives: To study the prevalence of middle mesial and middle distal canals in permanent mandibular molars in Egyptian subpopulation using micro-computed tomography. Materials and Methods: Two hundred and forty extracted mandibular permanent molars of Egyptian patients were scanned using micro-computed tomography, then the images were reconstructed to allow for the detection of the middle mesial (MM) and middle distal (MD) canals of the molars examined. The path of each extra canal was studied to determine the configuration of each canal...
April 2020: Nigerian Journal of Clinical Practice
https://read.qxmd.com/read/32246660/how-are-the-color-parameters-of-a-cad-cam-feldspathic-ceramic-of-the-material-affected-by-its-thickness-shade-and-color-of-the-substructure
#14
E Tamam, M B Güngör, S K Nemli
Objectives: The purpose of this study was to evaluate the effect of the tooth color, ceramic color, and ceramic thickness on the final color parameters of a feldspathic computer-aided design (CAD)/computer-aided manufacturing (CAM) ceramic material. Materials and Methods: Resin specimens (12 × 14 × 4 mm) were prepared from six shades, namely, 0M1S, 1M1S, 2M3S, 3M2S, 4M3S, and 5M3S, to simulate tooth color. Ceramic slices with thicknesses of 0.3, 0.5, 0.7, and 1 mm were sectioned from Vitablocs Mark II (12 × 14 × 18 mm) in 10 shades-OM1C, 1M1C, 1M2C, 2M1C, 2M2C, 2M3C, 3M1C, 3M2C, 3M3C, and 4M2C...
April 2020: Nigerian Journal of Clinical Practice
https://read.qxmd.com/read/32246650/effects-of-all-on-four-implant-designs-in-mandible-on-implants-and-the-surrounding-bone-a-3-d-finite-element-analysis
#15
G Deste, R Durkan
Aims: The purpose of this study was to observe the stresses of all-on-four implant designs in an edentulous mandible in the implant, surrounding bone, and monolithic ceramics. Materials and Methods: In mandibular all-on-four implant models, anterior implants were placed vertically, and posterior implants were differently inclined. On the full-arch fixed prosthetic restoration monolithic zirconia framework, monolithic lithium disilicate was prepared as the superstructure...
April 2020: Nigerian Journal of Clinical Practice
https://read.qxmd.com/read/32246537/sensory-nerve-deficient-microenvironment-impairs-tooth-homeostasis-by-inducing-apoptosis-of-dental-pulp-stem-cells
#16
An-Qi Liu, Li-Shu Zhang, Dong-Dong Fei, Hao Guo, Mei-Ling Wu, Jin Liu, Xiao-Ning He, Yong-Jie Zhang, Kun Xuan, Bei Li
OBJECTIVES: The aim of this study is to investigate the role of sensory nerve in tooth homeostasis and its effect on mesenchymal stromal/stem cells (MSCs) in dental pulp. MATERIALS AND METHODS: We established the rat denervated incisor models to identify the morphological and histological changes of tooth. The groups were as follows: IANx (inferior alveolar nerve section), SCGx (superior cervical ganglion removal), IANx + SCGx and Sham group. The biological behaviour of dental pulp stromal/stem cells (DPSCs) was evaluated...
April 4, 2020: Cell Proliferation
https://read.qxmd.com/read/32246534/bareb-a-bayesian-repulsive-biclustering-model-for-periodontal-data
#17
Yuliang Li, Dipankar Bandyopadhyay, Fangzheng Xie, Yanxun Xu
Preventing periodontal diseases (PD) and maintaining the structure and function of teeth are important goals for personal oral care. To understand the heterogeneity in patients with diverse PD patterns, we develop a Bayesian repulsive biclustering method that can simultaneously cluster the PD patients and their tooth sites after taking the patient- and site-level covariates into consideration. BAREB uses the determinantal point process prior to induce diversity among different biclusters to facilitate parsimony and interpretability...
April 3, 2020: Statistics in Medicine
https://read.qxmd.com/read/32246279/epidemiological-trends-predictive-factors-and-projection-of-tooth-loss-in-germany-1997-2030-part-ii-edentulism-in-seniors
#18
Falk Schwendicke, Ina Nitschke, Helmut Stark, Wolfgang Micheelis, Rainer A Jordan
OBJECTIVE: This is the second part of a report on tooth loss in Germany 1997-2030. Here, we describe trends in the prevalence of edentulism in seniors 1997-2014, assess predictive factors for edentulism, and projected it into 2030. MATERIAL AND METHODS: We used data from three waves of the cross-sectional, multi-center, nationwide representative German Oral Health Studies. Overall, 3449 seniors (65-74 years) were included (1997: 1367; 2005: 1040; 2016: 1042). Age, sex, educational level, smoking status, and the cohort were entered into age-cohort binary-logistic regression models to assess the association of predictors with edentulism and to project edentulism in 2030 via Monte Carlo simulations...
April 3, 2020: Clinical Oral Investigations
https://read.qxmd.com/read/32245838/defective-nucleotide-dependent-assembly-and-membrane-fusion-in-mfn2-cmt2a-variants-improved-by-bax
#19
Nyssa B Samanas, Emily A Engelhart, Suzanne Hoppins
Mitofusins are members of the dynamin-related protein family of large GTPases that harness the energy from nucleotide hydrolysis to remodel membranes. Mitofusins possess four structural domains, including a GTPase domain, two extended helical bundles (HB1 and HB2), and a transmembrane region. We have characterized four Charcot-Marie-Tooth type 2A-associated variants with amino acid substitutions in Mfn2 that are proximal to the hinge that connects HB1 and HB2. A functional defect was not apparent in cells as the mitochondrial morphology of Mfn2-null cells was restored by expression of any of these variants...
May 2020: Life Science Alliance
https://read.qxmd.com/read/32245745/long-term-skeletal-and-dental-changes-between-tooth-anchored-versus-dresden-bone-anchored-rapid-maxillary-expansion-using-cbct-images-in-adolescents-randomized-clinical-trial
#20
Kamran Davami, Elissa Talma, Winfried Harzer, Manuel O Lagravère
OBJECTIVE: The aim of this study was to determine long-term skeletal and dental changes in tooth-anchored versus Dresden bone-anchored rapid maxillary expansion using CBCT images in adolescents. MATERIALS AND METHODS: In all, 29 adolescent patients (11-17 years of age) needing skeletal expansion were randomly allocated to two different groups treated by either a Dresden bone-anchored expander or a conventional hyrax expander. Patients included did not have previous orthodontic treatment, were non-syndromic and had all teeth present in mouth...
March 31, 2020: International Orthodontics
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