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https://www.readbyqxmd.com/read/29150947/levels-of-serum-retinol-binding-protein-4-before-and-after-non-surgical-periodontal-treatment-in-lean-and-obese-subjects-an-interventional-study
#1
Mayte Martínez-Herrera, Francisco Javier Silvestre, Javier Silvestre-Rangil, Sandra López-Domènech, Celia Bañuls, Milagros Rocha
AIM: We aimed to evaluate serum RBP4 levels before and after periodontal therapy in lean and obese subjects with chronic periodontitis (CP) in order to determine its possible association with periodontitis. MATERIALS AND METHODS: This is an interventional study for which a total of 112 lean and 119 obese subjects were recruited. Patients with CP were evaluated before and after three months of non-surgical periodontal treatment. Periodontal, anthropometric, biochemical parameters and serum levels of TNFα, IL-6, hsCRP and RBP4 were assessed...
November 18, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/29150664/histological-evidence-for-a-dynamic-dental-battery-in-hadrosaurid-dinosaurs
#2
Katherine Bramble, Aaron R H LeBlanc, Denis O Lamoureux, Mateusz Wosik, Philip J Currie
The first histological study of an entire hadrosaurid dental battery provides a comprehensive look at tooth movement within this complex structure. Previous studies have focused on isolated teeth, or in-situ batteries, but this is the first study to examine an entire dental battery of any dinosaur. The absence of direct tooth-to-tooth contact across the entire battery and a unique arrangement of the dental tissues in hadrosaurids led us to compare their teeth with the ever-growing incisors of mammals. The similarity in the distributions of tissues along the incisor, coupled with continuous eruption, make for helpful comparisons to hadrosaurid teeth...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150186/articular-scaling-and-body-mass-estimation-in-platyrrhines-and-catarrhines-modern-variation-and-application-to-fossil-anthropoids
#3
Jonathan M G Perry, Siobhán B Cooke, Jacqueline A Runestad Connour, M Loring Burgess, Christopher B Ruff
Body mass is an important component of any paleobiological reconstruction. Reliable skeletal dimensions for making estimates are desirable but extant primate reference samples with known body masses are rare. We estimated body mass in a sample of extinct platyrrhines and Fayum anthropoids based on four measurements of the articular surfaces of the humerus and femur. Estimates were based on a large extant reference sample of wild-collected individuals with associated body masses, including previously published and new data from extant platyrrhines, cercopithecoids, and hominoids...
November 14, 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/29150134/stress-generation-in-mandibular-anterior-teeth-restored-with-different-types-of-post-and-core-at-various-levels-of-ferrule
#4
Anatolii Savychuk, Marianthi Manda, Christos Galanis, Christofer Provatidis, Petros Koidis
STATEMENT OF PROBLEM: Pertinent evidence regarding the mechanical integrity of mandibular anterior teeth restored with a post-and-core is limited. PURPOSE: The purpose of this finite element analysis study was to compare the impact of the post type (glass fiber post-and-resin core or cast post-and-core) along with the ferrule effect on the stress fields generated in endodontically treated mandibular lateral incisors and canines. MATERIAL AND METHODS: Three-dimensional models of the segmented mandible were developed...
November 15, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29149844/use-of-artificial-primary-teeth-for-endodontic-laboratory-research-experiments-related-to-canal-length-determination
#5
Anna Carolina V Mello-Moura, Carmela R Bresolin, Cacio Moura-Netto, André Ito, Angela T Araki, José Carlos P Imparato, Fausto M Mendes
BACKGROUND: Due to the scarcity of exfoliated/extracted human primary teeth with complete roots, artificial teeth were developed as an alternative to be used for educational and laboratory research purposes. This study aimed to assess the feasibility of using artificial primary teeth for conducting laboratory research through an experiment related to canal length determination, comparing artificial teeth with natural teeth. METHODS: Thirty anterior and 21 posterior artificial teeth, and the same number of natural primary teeth were selected...
November 17, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/29148913/using-cross-polarized-photography-as-a-guide-for-selecting-resin-composite-shade
#6
C A Villavicencio-Espinoza, M H Narimatsu, A Y Furuse
The restoration of single discolored maxillary anterior teeth is still a difficult task, as not only shape and surface characterization play an important role in the success of the treatment, but the propagation of light throughout the restorative material does as well. In some cases, small changes in morphology, color, and brightness will be noticeable. These factors are sometimes very tricky, and shade guides alone are difficult to use for color selection. This article proposes a protocol of employing cross-polarization imaging for improving the accuracy of the shade selection of resin composites...
November 17, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/29148912/influence-of-different-restoration-techniques-on-fracture-resistance-of-root-filled-teeth-in-vitro-investigation
#7
M E Hshad, E E Dalkılıç, G C Ozturk, I Dogruer, F Koray
OBJECTIVE: The purpose of this study was to determine the fracture strength of endodontically treated mandibular premolar teeth restored with composites and different reinforcement techniques. METHODS AND MATERIALS: Forty-eight freshly extracted human mandibular premolar teeth were randomly divided into four groups: group IN, group CR, group FRC, and group PRF. Group IN consisted of teeth with intact crowns and served as the control group. In the other three groups, endodontic treatment was performed and standard mesio-occluso-distal (MOD) cavities were prepared...
November 17, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/29147823/primary-peri-implant-oral-intra-epithelial-neoplasia-carcinoma-in-situ-a-case-report-considering-risk-factors-for-carcinogenesis
#8
Makoto Noguchi, Hiroaki Tsuno, Risa Ishizaka, Kumiko Fujiwara, Shuichi Imaue, Kei Tomihara, Takashi Minamisaka
BACKGROUND: Major risk factors for oral squamous cell carcinoma (SCC) are tobacco smoking, a betel quid chewing habit, and heavy alcohol consumption. However, around 15% of oral SCCs cannot be explained by these risk factors. Although oral SCC associated with dental implants is quite rare, there has been a recent gradual accumulation of reports about it. Here, we report a case of primary peri-implant oral intra-epithelial neoplasia/carcinoma in situ (OIN/CIS) in a woman without the major risk factors for oral SCC...
November 16, 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/29147600/osteoglophonic-dysplasia-phenotypic-and-radiological-clues
#9
Shwetha Kuthiroly, Dhanya Yesodharan, Aneesh Ghosh, Kenneth E White, Sheela Nampoothiri
Osteoglophonic dysplasia (OD) is an extremely rare, skeletal dysplasia with an autosomal dominant mode of inheritance. Rhizomelic dwarfism, craniosynostosis, impacted teeth, hypodontia or anodontia, and multiple nonossifying bone lesions are the salient features of this condition. We report a 14-year-old girl with clinical and radiological features consistent with OD. She presented with disproportionate short stature, craniosynostosis, a prominent supraorbital ridge, delayed teeth eruption, hypodontia, and multiple nonossifying bone lesions in the femur, tibia, and fibula...
December 2017: Journal of Pediatric Genetics
https://www.readbyqxmd.com/read/29145846/comparison-of-diagnostic-methods-for-early-interproximal-caries-detection-with-near-infrared-light-transillumination-an-in-vivo-study
#10
Ismail Hakki Baltacioglu, Kaan Orhan
BACKGROUND: Although numerous studies have used digital intraoral imaging, only a few studies have used photo-optical methods for the diagnosis of caries. Moreover, several limitations exist in terms of observers (experience and specialty) and the caries lesion itself. Hence, the aims of this study were to evaluate the diagnostic capability of near-infrared light transillumination (NILT) and PSP-Bitewing radiographs and to compare the interobserver and intraobserver differences in addition to observers' experience level to detect early interproximal caries lesions in vivo...
November 16, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/29145527/evaluation-of-operating-time-and-patient-perception-using-conventional-impression-taking-and-intraoral-scanning-for-crown-manufacture-a-split-mouth-randomized-clinical-study
#11
Yasser Haddadi, Golnosh Bahrami, Flemming Isidor
PURPOSE: To compare operating time and patient perception of conventional impression (CI) taking and intraoral scanning (IOS) for manufacture of a tooth-supported crown. MATERIALS AND METHODS: A total of 19 patients needing indirect full-coverage restorations fitting the requirements for a split-mouth design were recruited. Each patient received two lithium disilicate crowns, one manufactured from CI taking and one from IOS. Both teeth were prepared following the manufacturers' recommendations...
November 16, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29145525/association-between-missing-posterior-teeth-and-occurrence-of-temporomandibular-joint-condylar-erosion-a-cone-beam-computed-tomography-study
#12
Felix Bertram, Linus Hupp, Dagmar Schnabl, Ansgar Rudisch, Rüdiger Emshoff
PURPOSE: To determine a possible association between asymptomatic temporomandibular joint (TMJ) condylar erosion and the number of missing posterior teeth and their location, as well as the number of dental quadrants with missing posterior teeth. MATERIALS AND METHODS: This case-control study involved 210 patients (male to female ratio = 98:112) aged 16-74 years, with 105 asymptomatic patients with TMJ condylar erosion and a control group of 105 patients without TMJ condylar erosion...
November 16, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29144892/preventable-tooth-loss-in-hawai-i-the-role-of-socioeconomic-status-diabetes-and-dental-visits
#13
Mikako Deguchi, Marjorie K Leimomi Mala Mau, James Davis, Richard Niederman
INTRODUCTION: Tooth preservation in adults and children is one of the Healthy People 2020 goals for oral health. Although the overall prevalence of tooth loss has been declining in the United States, substantial racial/ethnic differences in preventable tooth loss persist as a public health problem. We examined the strength of the association of health risk factors and tooth loss in Hawai'i. METHODS: We used data from the Hawai'i Behavioral Risk Factor Surveillance System survey collected from 2011 through 2014...
November 16, 2017: Preventing Chronic Disease
https://www.readbyqxmd.com/read/29144879/effectiveness-and-impact-of-the-walking-bleach-technique-on-esthetic-self-perception-and-psychosocial-factors-a-randomized-double-blind-clinical-trial
#14
C Bersezio, J Martin, F Peña, M Rubio, J Estay, R Vernal, Ob Oliveira Junior, E Fernández
OBJECTIVE: This trial evaluates the impact of psychosocial and esthetic self-perceptions of patients undergoing nonvital tooth bleaching using the walking bleach technique. We also assessed the clinical effectiveness of bleaching tooth discoloration. METHODS: Fifty volunteers with nonvital tooth discoloration were enrolled. Teeth were randomized into two groups: 35% hydrogen peroxide (n=25) and 37% carbamide peroxide (n=25). Intracoronal bleaching was performed over four sessions using the walking bleach technique...
November 2017: Operative Dentistry
https://www.readbyqxmd.com/read/29143569/prevalence-of-temporomandibular-symptoms-and-parafunctional-habits-in-a-university-dental-clinic-and-association-with-gender-age-and-missing-teeth
#15
Georgios S Chatzopoulos, Miguel Sanchez, Alejandro Cisneros, Larry F Wolff
Objective To assess the prevalence of symptoms of temporomandibular disorder (TMD) and parafunctional habits as well as to investigate their association with age, gender, and number of missing teeth. Methods This retrospective study is based on 4204 randomly selected patients who were examined to determine their symptoms of TMD, such as clicking, difficulty chewing, difficulty opening/closing, as well self-reported joint pain and parafunctional habits. Results Clenching/grinding was reported by 26.5% of the examined population, clicking by 14...
November 16, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/29143462/evaluation-of-immediate-implants-augmented-with-autogenous-bone-melatonin-composite-graft-in-the-esthetic-zone-a-randomized-controlled-trial
#16
Hala H A Hazzaa, Naglaa Sh El-Kilani, Shadia Abd-Elhameed Elsayed, Phoebe M Abd El Massieh
PURPOSE: To evaluate the clinical and radiographic outcomes following the application of autogenous bone (ABG)/melatonin composite graft around immediate implants in the esthetic zone compared to ABG alone. MATERIALS AND METHODS: Twenty-six patients with two nonrestorable anterior/premolar teeth were randomly classified into two equal groups. Dental implants were immediately inserted either with ABG (control group) or ABG/melatonin (test group). Outcome measures were peri-implant sulcus depth (PD), gingival index (GI), and wound healing scores...
November 16, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29143451/using-intraoral-scanning-technology-for-three-dimensional-printing-of-kennedy-class-i-removable-partial-denture-metal-framework-a-clinical-report
#17
Feng Hu, Zhenhua Pei, Ying Wen
Removable partial dentures (RPDs) are used to restore missing teeth and are traditionally fabricated using the lost-wax casting technique. The casting process is arduous, time-consuming, and requires a skilled technician. The development of intraoral scanning and 3D printing technology has made rapid prototyping of the RPD more achievable. This article reports a completed case of direct fabrication of a maxillary RPD metal framework (Kennedy Class I) using intraoral scanning and 3D printing techniques. Acceptable fit and satisfactory clinical outcome were demonstrated...
November 16, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29143388/in-vitro-assessment-of-retention-and-resistance-failure-loads-of-teeth-restored-with-a-complete-coverage-restoration-and-different-core-materials
#18
Vasileia Tsiagali, Yvoni Kirmanidou, Argirios Pissiotis, Konstantinos Michalakis
PURPOSE: To investigate in vitro the retention and the resistance form, as well as the failure modes of maxillary premolars restored with cast metal crowns and different core materials. MATERIALS AND METHODS: Sixty human extracted maxillary premolars were selected according to their size and were embedded in PMMA resin blocks. After removing a part of their clinical crowns, the teeth were randomly divided into 3 groups of 20 teeth and were either left unrestored, or they were restored with amalgam or composite resin...
November 16, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29143185/osteogenic-prospective-of-deriving-human-dental-stem-cells-in-collagen-matrix-boost
#19
Tong-Jing Fang, Ding-Han Wang, Chia-Yu Wang, Raju Poongodi, Nien-Hsien Liou, Jiang-Chuan Liu, Ming-Lun Hsu, Po-Da Hong, Shih-Fang Yang, Meng-Lun Liu
Stem cells derived from oral tissue represent a highly attractive alternative source for clinical bone regeneration because they can be collected by non-invasive or minimally invasive procedures. Herein, we describe the human dental stem cells (DSCs) deriving from buccal fat pads (BFP), dental pulp (DP) of impacted teeth, and periodontal ligaments (PDL) to obtain BFPSCs, DPSCs, and PDLSCs, respectively. Cells were purified with selected medium and expanded through passages in stem cell culture medium. Purified cells were characterized for stemness by their growth rate, immunostaining, and multilineage differentiation ability...
November 15, 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/29142882/incidence-of-apical-crack-formation-and-propagation-during-removal-of-root-canal-filling-materials-with-different-engine-driven-nickel-titanium-instruments
#20
Taha Özyürek, Vildan Tek, Koray Yılmaz, Gülşah Uslu
Objectives: To determine the incidence of crack formation and propagation in apical root dentin after retreatment procedures performed using ProTaper Universal Retreatment (PTR), Mtwo-R, ProTaper Next (PTN), and Twisted File Adaptive (TFA) systems. Materials and Methods: The study consisted of 120 extracted mandibular premolars. One millimeter from the apex of each tooth was ground perpendicular to the long axis of the tooth, and the apical surface was polished...
November 2017: Restorative Dentistry & Endodontics
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