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https://www.readbyqxmd.com/read/29166538/antimicrobial-photodynamic-therapy-associated-with-conventional-endodontic-treatment-a-clinical-and-molecular-microbiological-study
#1
Caroline C da Silva, Sérgio P Chaves Júnior, Gabriela L D Pereira, Karla B F C da Fontes, Lívia A A Antunes, Helvécio C C Póvoa, Leonardo S Antunes, Natalia L P Póvoa Iorio
This study evaluated antimicrobial photodynamic therapy (aPDT) as an adjunct to endodontic treatment. Ten uniradicular teeth (control group (CG)= 4 (2 and test group (TG)= 6) with primary endodontic infections, from both genders, between 17 and 65 years old, were analyzed. Microbiological samples were collected before and after chemical-mechanical instrumentation (CMI), after aPDT (for the TG), and after the removal of the temporary restorations (second session). In TG, the aPDT was performed with 100 μg/mL methylene blue and irradiated with low power laser (InGaAIP, 660 nm; 100 mW; 40 sec) with a fiber-coupled optical laser...
November 22, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/29166418/prosthetic-rehabilitation-of-a-patient-with-rare-and-severe-enamel-renal-syndrome
#2
Cedric Mauprivez, Jean-Francois Nguyen, Muriel de la Dure-Molla, Adrien Naveau
Dental rehabilitation of acute cases of enamel renal syndrome is challenging due to the absence of clinical reports. In the present case history report, examination of an 18-year-old patient revealed a complete lack of permanent teeth, as well as irregular and swollen bone and gingival morphology. Radiographs showed multiple impacted teeth in both arches. Creating a 1.5- to 2-cm interarch space was necessary for setting complete dentures. The ideal occlusal plane was chosen by combining two techniques (cephalometric radiograph and modification of the mandibular occlusal rim according to anatomical guidelines)...
November 22, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29166417/oral-status-and-prosthetic-treatment-needs-in-functionally-impaired-and-elderly-individuals
#3
Angelika Lantto, Robert Lundqvist, Inger Wårdh
PURPOSE: The purpose of this cross-sectional study was to describe the oral status and prosthetic treatment needs of dependent, functionally impaired individuals and dependent elderly individuals in comparison with the general population. METHODS: A total of 355 subjects, sampled from the register of increased financial support for dependent and functionally impaired individuals in the north of Sweden, were examined. The variables were number of teeth, Eichner Index, type and condition of prostheses, and treatment needs...
November 22, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29166384/neanderthal-hunting-strategies-inferred-from-mortality-profiles-within-the-abric-roman%C3%A3-sequence
#4
Juan Marín, Palmira Saladié, Antonio Rodríguez-Hidalgo, Eudald Carbonell
Ungulate mortality profiles are commonly used to study Neanderthal subsistence strategies. To assess the hunting strategies used by Neanderthals, we studied the ages at death of the cervids and equids found in levels E, H, I, Ja, Jb, K, L and M of the Abric Romaní sequence. These levels date between 43.2 ± 1.1 ka BP (14C AMS) and 54.5 ± 1.7 ka BP (U-series). The degree of eruption and development of the teeth and their wear stages were used to determine the ages of these animals at death, and mortality profiles were constructed using these data...
2017: PloS One
https://www.readbyqxmd.com/read/29165045/determination-of-the-centre-of-resistance-during-en-masse-retraction-combined-with-corticotomy-finite-element-analysis
#5
Tanes Ouejiaraphant, Bancha Samruajbenjakun, Ekachai Chaichanasiri
OBJECTIVE: To determine the effect of corticotomy on the change in the centre of resistance of the six maxillary anterior teeth Materials and methods: Three-dimensional finite element models of the maxillary anterior teeth with and without corticotomy were constructed. Brackets (size 0.022 inch × 0.028 inch) were placed passively on all anterior teeth that were set at the centre of the labial surface in the mesio-distal dimension and 3 mm from the incisal edge to the bracket slot in the vertical direction...
November 22, 2017: Journal of Orthodontics
https://www.readbyqxmd.com/read/29165026/comparative-evaluation-of-oral-and-dento-maxillofacial-manifestation-of-patients-with-sickle-cell-diseases-and-beta-thalassemia-major
#6
Salmeh Kalbassi, Mohammad Reza Younesi, Vahid Asgary
BACKGROUND: Regarding the importance of oral and dental health in patients with hemoglobinopathies and also due to the different results of different studies in this background, in patients with beta thalassemia (BTM) and sickle cell disease (SCD), this study aimed to evaluate and compare the oral and dental manifestations of patients with BTM and SCD. MATERIAL AND METHODS: In this cross-sectional study during the years 2014-2017, a total of 175 patients (with documented BTM or SCD attending to Tehran, Mashhad, Isfahan, and Tabriz cities central hospitals) were randomly recruited...
November 22, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/29164184/interpretations-of-complications-following-third-molar-extraction
#7
Devorah Schwartz-Arad, Anat Lipovsky, Michal Pardo, Oren Adut, Eran Dolev
OBJECTIVE: Surgical removal of third molars is often associated with complications. The aim of the present study was to analyze the incidence of complications following extraction of third molars relative to the risk factors. METHOD AND MATERIALS: This retrospective study included 463 patients who had mandibular third molar extraction (performed by a single surgeon, DSA) in the years 2001 to 2011. In total, 665 mandibular third molars were extracted. The average patient's age was 29 ± 11...
November 21, 2017: Quintessence International
https://www.readbyqxmd.com/read/29164182/replantation-of-an-avulsed-tooth-after-one-day-of-storage-in-adverse-extraoral-dry-conditions-acceptable-outcome-after-a-10-year-follow-up
#8
Lluís Brunet-Llobet, Eduard Lahor-Soler, Jaume Miranda-Rius
This article reports a clinical case of a 10-year-old boy who sustained an avulsion of the maxillary right central incisor. The avulsed tooth was kept in adverse extraoral dry conditions for 26 hours from the moment of trauma until its replantation. Treatment guidelines for avulsed mature permanent teeth with closed apex were only partially followed. However, the clinical and radiographic findings after 10 years revealed acceptable functional outcome, in spite of ankylosis and root resorption of the replanted tooth, which was eventually treated cosmetically...
November 21, 2017: Quintessence International
https://www.readbyqxmd.com/read/29164121/a-pragmatic-study-shows-failure-of-dental-composite-fillings-is-genetically-determined-a-contribution-to-the-discussion-on-dental-amalgams
#9
Alexandre R Vieira, Marília B Silva, Kesia K A Souza, Arnôldo V A Filho, Aronita Rosenblatt, Adriana Modesto
Composite resins for posterior tooth restorations have become a viable alternative to dental amalgam. Failures sometimes cannot be easily explained, and we hypothesize that a genetic component may influence longevity of restorations. We aimed to determine if there is any evidence for a difference in the performance of amalgams versus composite resin in extensive posterior restorations. We also aimed to determine if risk factors such as age, sex, smoking tobacco, alcohol drinking, diabetes status, and periodontal health status may have a role in the failures of extensive anterior composite restorations...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/29163730/association-between-dental-caries-and-body-mass-index-in-schoolchildren-aged-between-14-and-16-years-in-riyadh-saudi-arabia
#10
Ahmed Abdullah Alghamdi, Ahmed Almahdy
Background: Dental caries and obesity are multifactorial diseases that have common risk factors. Studies worldwide reported varied outcomes about the association between dental caries and obesity. There is no published study that investigates this association among schoolchildren in Arabic countries. The aim of this study was to evaluate the relationship between dental caries (DMFT) and body mass index (BMI) for children aged between 14 and 16 years old in Riyadh, Saudi Arabia. The role of oral hygiene habits, parent's education, sugar consumption and physical activity in causing both diseases was also evaluated...
December 2017: Journal of Clinical Medicine Research
https://www.readbyqxmd.com/read/29163479/discriminating-between-interstitial-and-circulating-leukocytes-in-tissues-of-the-murine-oral-mucosa-avoiding-nasal-associated-lymphoid-tissue-contamination
#11
Peter D Bittner-Eddy, Lori A Fischer, Andy A Tu, Daniel A Allman, Massimo Costalonga
Periodontitis is a chronic inflammatory response to a microbial biofilm that destroys bone and soft tissues supporting the teeth. Murine models of periodontitis based on Porphyromonas gingivalis (Pg) colonization have shown that extravasation of leukocytes into oral tissue is critical to driving alveolar bone destruction. Identifying interstitial leukocytes is key to understanding the immunopathogenesis of periodontitis. Here, we describe a robust flow cytometry assay based on intravenous FITC-conjugated anti-mouse CD45 mAb that distinguishes interstitial leukocytes in the oral mucosa of mice from those circulating within the vasculature or in post-dissection contaminating blood...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29162890/reconstructing-molar-growth-from-enamel-histology-in-extant-and-extinct-equus
#12
Carmen Nacarino-Meneses, Xavier Jordana, Guillem Orlandi-Oliveras, Meike Köhler
The way teeth grow is recorded in dental enamel as incremental marks. Detailed analysis of tooth growth is known to provide valuable insights into the growth and the pace of life of vertebrates. Here, we study the growth pattern of the first lower molar in several extant and extinct species of Equus and explore its relationship with life history events. Our histological analysis shows that enamel extends beyond the molar's cervix in these mammals. We identified three different crown developmental stages (CDS) in the first lower molars of equids characterised by different growth rates and likely to be related to structural and ontogenetic modifications of the tooth...
November 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29162118/multilevel-lumbar-spine-infection-due-to-poor-dentition-in-an-immunocompetent-adult-a-case-report
#13
Michaela B Quast, Carrie M Carr, W Michael Hooten
BACKGROUND: Although spinal infections have been reported following dental procedures, development of a spinal infection attributed to poor dentition without a history of a dental procedure in an immunocompetent adult has not been previously reported. Here we provide a case report of a multilevel lumbar spine infection that developed in an immunocompetent adult with poor dentition. CASE PRESENTATION: A 63-year-old white male man with past medical history of hypertension presented to a hospital emergency department with a 4-month history of progressively worsening low back pain...
November 22, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29161991/simple-and-innovative-method-of-removal-of-unfavourable-root-technical-note
#14
Yuvaraj Vaithilingam, Balaji Ts, Saravanan Rajendran, Nithin Joseph Jude, Suresh Kumar G
Extraction of teeth is one of the most commonly performed minor oral surgical procedures. However, some clinical situations render routine extractions challenging. Here we report such a situation and a simple and innovative technique that involves the use of braided stainless steel wire to remove an unfavorable palatally inclined left upper lateral incisor with least damage to adjacent structures.
January 1, 2017: Tropical Doctor
https://www.readbyqxmd.com/read/29161950/x-ray-microtomography-assessment-of-carisolv-and-papacarie-effect-on-dentin-mineral-density-and-amount-of-removed-tissue
#15
Jehan AlHumaid, Fahad Al-Harbi, Maha El Tantawi, Abeer Elembaby
OBJECTIVE: The aim of the present study was to directly compare Carisolv and Papacarie regarding the volume of removed tissue (RT) and dentin mineral density (DMD) after excavation. MATERIALS AND METHODS: Twenty permanent molars were randomized into two groups where caries was excavated using Carisolv or Papacarie followed by removal of softened tissue by a blunt instrument. X-ray microtomography was used to scan teeth before and after excavation generating two- and three-dimensional images that were used to calculate the percentage of RT relative to baseline tooth tissue volume and DMD that was categorized into sound dentin (>1...
November 21, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/29161342/oral-frailty-as-a-risk-factor-for-physical-frailty-and-mortality-in-community-dwelling-elderly
#16
Tomoki Tanaka, Kyo Takahashi, Hirohiko Hirano, Takeshi Kikutani, Yutaka Watanabe, Yuki Ohara, Hiroyasu Furuya, Tetsuo Tsuji, Masahiro Akishita, Katsuya Iijima
Background: Oral health is important for maintaining general health among the elderly. However, a longitudinal association between poor oral health and general health has not been reported. We investigated whether poor oral status can predict physical weakening (physical frailty, sarcopenia, subsequent disability) and identified the longitudinal impact of the accumulated poor oral health (i.e., oral frailty) on adverse health outcomes, including mortality. Methods: A total of 2,011 elderly individuals (aged ≥65 years) participated in the baseline survey of the Kashiwa study in 2012...
November 17, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29161180/comparison-of-verdeluz-orange-g-and-modified-gallego-stains
#17
A Kunche, M A Kiresur, A Ananthaneni, V S Guduru, H K Puneeth, B Bagalad
Tumors of the oral cavity include combinations of hard and soft tissues that may be difficult to identify using routine hematoxylin and eosin (H & E) staining. Although combination stains can demonstrate hard and soft tissues, trichrome stains, such as VanGieson and Masson, cannot differentiate dental hard tissues, such as dentin, cementum and osteoid. Modified Gallegos (MGS) and verdeluz orange G-acid fuchsin (VOF) stains can differentiate components of teeth. We used 10 tissue sections of decalcified bone and 10 pathologic tissue sections that contained different calcified tissues including peripheral ossifying fibroma, odontoma, central ossifying fibroma and cemento-ossifying fibroma...
November 21, 2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/29160917/visualization-of-calcium-phosphate-cement-in-teeth-by-zero-echo-time-1-h-mri-at-high-field
#18
Weiqiang Dou, Simone Mastrogiacomo, Andor Veltien, Hamdan S Alghamdi, X Frank Walboomers, Arend Heerschap
(1) H magnetic resonance imaging (MRI) by a zero echo time (ZTE) sequence is an excellent method to image teeth. Calcium phosphate cement (CPC) materials are applied in the restoration of tooth lesions, but it has not yet been investigated whether they can be detected by computed tomography (CT) or MRI. The aim of this study was to optimize high-field ZTE imaging to enable the visualization of a new CPC formulation implanted in teeth and to apply this in the assessment of its decomposition in vivo. CPC was implanted in three human and three goat teeth ex vivo and in three goat teeth in vivo...
November 21, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/29160804/residual-endodontic-filling-material-after-post-space-preparation-a-confocal-microscopic-study
#19
Yu-Yao Teoh, Laurence J Walsh
This laboratory study assessed removability of endodontic alkaline cements and resin sealers using coronal cross-sectional slices of roots with single canals. Materials were labelled with 0.1% (w/w) sodium fluorescein prior to mixing so that confocal microscopy could be used to quantify material remaining on the walls of post spaces, to assess cleanliness. Roots of extracted teeth were prepared using rotary NiTi instruments then obturated using lateral condensation with gutta percha and epoxy resin sealers (AH-Plus™ or Zirmix™), or were filled by injecting mineral trioxide aggregate (MTA) cement (GC Nex™ MTA or MTAmix™) or a hard-setting calcium hydroxide cement (Supercal™)...
November 21, 2017: Materials
https://www.readbyqxmd.com/read/29160397/mechanical-preparation-showed-superior-shaping-ability-than-manual-technique-in-primary-molars-a-micro-computed-tomography-study
#20
Lídia Regina da Costa Hidalgo, Léa Assed Bezerra da Silva, Graziela Bianchi Leoni, Jardel Francisco Mazzi-Chaves, Emily Eduardo da Silva Carvalho, Alberto Consolaro, Manoel Damião Sousa-Neto
The aim of the study was to evaluate canal preparation in primary molars with hand files, ProTaper Next and Self-Adjusting File (SAF) by 2D and 3D micro-computed tomography (micro-CT) analysis. Canals of 24 primary molars were prepared with hand files (HF), ProTaper Next (PTN) and SAF (n=8/group). The teeth were scanned before and after root canal preparation and the pre- and postoperative micro-CT images were reconstructed. Changes in 2D (area, perimeter, roundness, minor and major diameter) and 3D [volume, surface area, structure model index (SMI)] morphological parameters, as well as canal transportation and lateral perforations were evaluated (Kruskal-Wallis and ANOVA; a=0...
July 2017: Brazilian Dental Journal
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