scholarly journals THE INFLUENCE OF DENTAL HYGIENE ON ANATOMICAL STRUCTURES OF THE PERIODONTIUM; La influencia de la higiene dental en las estructuras anatomicas del periodontium

2017 ◽  
Vol 9 (2) ◽  
pp. 67-72 ◽  
Author(s):  
Mária Matuševská ◽  
Eva Kovalova ◽  
Jana Ferkova ◽  
Kvetuse Lovasova ◽  
Darina Kluchova
Keyword(s):  
Tissue Damage ◽  
Dental Hygiene ◽  
Dental Hygienist ◽  
Periodontal Tissue ◽  
Anatomical Structures ◽  
Appropriate Treatment ◽  
Chemical Irritation ◽  
Physical And Chemical ◽  
The Relationship ◽  
Positive Results

The most common periodontal tissue damage occurs by the action of microbial plaque. A smaller percentage of damage comes from non-microbial factors (physical and chemical irritation). Between the periodontal and the pulp exists a connection. Therefore, it is necessary to know the relationship between periodontium and endodont in order to prevent damage. Positive results were achieved by the appropriate treatment in which was influenced on the  inflamation of the periodontium. It is also a need for cooperation between the attending dentist and dental hygienist. La lesión más común del tejido periodontal se produce por la acción de la placa microbiana. Un porcentaje menor de lesión proviene de factores no microbianos (irritación física y química). Entre el periodontal y la pulpa existe una conexión. Por lo tanto, es necesario conocer la relación entre el periodoncio y el endodonte para prevenir lesión. Se obtuvieron resultados positivos mediante el tratamiento apropiado en el que se influyó en la inflamación del periodonto. También es una necesidad de cooperación entre el dentista y el higienista dental.

The relationship between sleep and headache in children: Implications for treatment

Cephalalgia ◽  
2014 ◽  
Vol 34 (10) ◽  
pp. 767-776 ◽  
Author(s):  
Vincenzo Guidetti ◽  
Claudia Dosi ◽  
Oliviero Bruni
Keyword(s):  
Sleep Disorders ◽  
Lifestyle Modification ◽  
Sleep Bruxism ◽  
Direct Role ◽  
Anatomical Structures ◽  
Appropriate Treatment ◽  
High Prevalence ◽  
Improve Patient Management ◽  
The Relationship ◽  
Improve Patient

Background The existence of a correlation and/or comorbidity between sleep disorders and headache, related to common anatomical structures and neurochemical processes, has important implications for the treatment of both conditions. Methods The high prevalence of certain sleep disorders in children with migraine and the fact that sleep is disrupted in these patients highlight the importance of a specific therapy targeted to improve both conditions. Findings The treatment of sleep disorders like insomnia, sleep apnea, sleep bruxism and restless legs syndrome, either with behavioral or pharmacological approach, often leads to an improvement of migraine. Drugs like serotoninergic and dopaminergic compounds are commonly used for sleep disorders and for migraine prophylaxis and treatment: Insomnia, sleep-wake transition disorders and migraine have been related to the serotonergic system abnormality; on the other hand prodromal symptoms of migraine (yawning, drowsiness, irritability, mood changes, hyperactivity) support a direct role for the dopaminergic system that is also involved in sleep-related movement disorders. Conclusions Our review of the literature revealed that, beside pharmacological treatment, child education and lifestyle modification including sleep hygiene could play a significant role in overall success of the treatment. Therefore comorbid sleep conditions should be always screened in children with migraine in order to improve patient management and to choose the most appropriate treatment.

Radiation-induced surface decomposition

1983 ◽  
Vol 41 ◽  
pp. 368-369
Author(s):  
M. L. Knotek
Keyword(s):  
Ionizing Radiation ◽  
Atomic Structure ◽  
Chemical Bonding ◽  
Neutral Species ◽  
Radiation Induced ◽  
Physical And Chemical ◽  
Surface Decomposition ◽  
The Relationship ◽  
Electron And Photon ◽  
Surface Bond

Modern surface analysis is based largely upon the use of ionizing radiation to probe the electronic and atomic structure of the surfaces physical and chemical makeup. In many of these studies the ionizing radiation used as the primary probe is found to induce changes in the structure and makeup of the surface, especially when electrons are employed. A number of techniques employ the phenomenon of radiation induced desorption as a means of probing the nature of the surface bond. These include Electron- and Photon-Stimulated Desorption (ESD and PSD) which measure desorbed ionic and neutral species as they leave the surface after the surface has been excited by some incident ionizing particle. There has recently been a great deal of activity in determining the relationship between the nature of chemical bonding and its susceptibility to radiation damage.

PET/CT WITH 68GA-PSMA-11 IN DETECTION OF PRIMARY TUMOR AND RECURRENCE OF PROSTATE CANCER

2018 ◽  
Vol 64 (6) ◽  
pp. 799-804
Author(s):  
Darya Ryzhkova ◽  
M. Poyda
Keyword(s):  
Prostate Cancer ◽  
Primary Tumor ◽  
Biochemical Recurrence ◽  
Whole Body ◽  
Negative Results ◽  
Primary Prostate Cancer ◽  
Pet Ct ◽  
The Relationship ◽  
Positive Results ◽  
T Category

Purpose: To study the diagnostic value of PET-CT with 68Ga-PSMA-11 in the diagnosis of a primary prostate cancer, preoperative staging, and the detection of recurrence of prostate cancer (PCa). Methods: 28 patients aged 64.7 ± 8.74 years were included. 10 patients primary prostate cancer, and 18 patients with biochemical recurrence of the disease after radical treatment were examined. All patients underwent PET-CT with 68Ga-PSMA-11 according the whole body protocol. Interpretation of images was performed visually and quantitatively by calculation of SUL max. Results: High focal or diffuse 68Ga-PSMA-11 uptake was found in prostate parenchyma in patients with primary prostate cancer. Additionally metastases in regional lymph nodes were diagnosed in 4 patients and bone metastases were found in one patient. The correlation between 68Ga-PSMA-11 uptake level and Gleason index in the primary tumor (R Spearmen = 0.25, p = 0.57) was not observed. PET-positive results were obtained in 14 patients and PET-negative results in 4 patients with biochemical recurrence of PCa. The relationship between the frequency of PET-positive results and Gleason index was not revealed (R Spearmen = 0.2, p = 0.39). We found a weak but significant correlation between the frequency of PET-positive results and the prostate tumor stage according to the T category (R Spearmen = 0.49, p = 0.049). In patients with low values of PSA (less than 1.0 ng/ml) in 4 out of 9 cases, PET-negative results were obtained. In patients with PSA level more than 1.0 ng/ml PET-positive results were obtained in all cases. Conclusions: PET/CT with 68Ga-PSMA-11 allows to diagnose the primary prostate cancer, to establish the stage of the disease in categories N and M, and also to determine the localization and dissemination of the tumor in patients with biochemical recurrence of prostate cancer. The relationship between 68Ga-PSMA-11 uptake in primary tumor and Gleason index was not found. The probability of obtaining PET-positive results in cases of biochemical recurrence is affected by a PSA level above 1 ng/ml and a high stage of the disease according to the T category (T3-T4).

scholarly journals The Relationship between the Sense of Coherence of Dental Hygiene Students in Their Graduation Year and Their View of the Profession and Attitude to Work: A Cross-Sectional Survey in Japan

2020 ◽  
Vol 17 (24) ◽  
pp. 9594
Author(s):  
Rumi Tano ◽  
Hiroko Miura ◽  
Katsuo Oshima ◽  
Kanako Noritake ◽  
Hideki Fukuda
Keyword(s):  
Sense Of Coherence ◽  
Dental Hygienist ◽  
Dental Hygienists ◽  
Future Prospects ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Dental Hygiene Students ◽  
Training Institutions ◽  
Level Of Significance ◽  
The Relationship

Objective: The need to make sense of coherence in placement support for student dental hygienists has been shown. On this basis, this study investigated the relationship between the sense of coherence of student dental hygienists and their view of the profession and attitude to work in order to clarify how they perceive their prospects for employment. Methods: The subjects were graduation-year students at all of the dental hygienist training institutions in Japan, and anonymous, self-administered questionnaires were sent to the institutions by post in 2019. The results were analyzed by χ2 tests, as well as one-way analysis of variance and multiple comparisons using Tukey’s test, with the level of significance set at 5%. Results: Of 6270 questionnaires that were returned, 6264 were analyzed. The sense of coherence (SOC) component senses were manageability (F(26,221) = 5306.06, p < 0.01), meaningfulness (F(26,222) = 4373.48, p < 0.01), and comprehensibility (F(26,216) = 3986.12, p < 0.01), with meaningfulness scoring significantly higher than the other two (p < 0.01). Analysis with SOC scores divided into the low, medium, and high groups showed a relationship between the SOC of student dental hygienists and their view of the profession and attitude to work (p < 0.01), such that higher SOC scores were associated with a better view of the profession and a better attitude to work (F(26,225) = 282.18, p < 0.01). Conclusions: The results suggest that education that increases SOC in dental hygienist training programs may positively affect future prospects for student dental hygienists.

scholarly journals Changes in Optical Properties upon Dye–Clay Interaction: Experimental Evaluation and Applications

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 197
Author(s):  
Giorgia Giovannini ◽  
René M. Rossi ◽  
Luciano F. Boesel
Keyword(s):  
Optical Properties ◽  
Hybrid Materials ◽  
High Performance ◽  
Fluorescent Properties ◽  
Chemical Mechanisms ◽  
Strong Electrostatic Interaction ◽  
Potential Applications ◽  
Photochemical Properties ◽  
Physical And Chemical ◽  
The Relationship

The development of hybrid materials with unique optical properties has been a challenge for the creation of high-performance composites. The improved photophysical and photochemical properties observed when fluorophores interact with clay minerals, as well as the accessibility and easy handling of such natural materials, make these nanocomposites attractive for designing novel optical hybrid materials. Here, we present a method of promoting this interaction by conjugating dyes with chitosan. The fluorescent properties of conjugated dye–montmorillonite (MMT) hybrids were similar to those of free dye–MMT hybrids. Moreover, we analyzed the relationship between the changes in optical properties of the dye interacting with clay and its structure and defined the physical and chemical mechanisms that take place upon dye–MMT interactions leading to the optical changes. Conjugation to chitosan additionally ensures stable adsorption on clay nanoplatelets due to the strong electrostatic interaction between chitosan and clay. This work thus provides a method to facilitate the design of solid-state hybrid nanomaterials relevant for potential applications in bioimaging, sensing and optical purposes.

Science or Art? How Aesthetic Standards Grease the Way Through the Publication Bottleneck but Undermine Science

2012 ◽  
Vol 7 (6) ◽  
pp. 562-571 ◽  
Author(s):  
Roger Giner-Sorolla
Keyword(s):  
Information Sharing ◽  
False Positive ◽  
Psychological Research ◽  
Current Crisis ◽  
Journal Publication ◽  
Root Cause ◽  
Methodological Rigor ◽  
Pass Through ◽  
The Relationship ◽  
Positive Results

The current crisis in psychological research involves issues of fraud, replication, publication bias, and false positive results. I argue that this crisis follows the failure of widely adopted solutions to psychology’s similar crisis of the 1970s. The untouched root cause is an information-economic one: Too many studies divided by too few publication outlets equals a bottleneck. Articles cannot pass through just by showing theoretical meaning and methodological rigor; their results must appear to support the hypothesis perfectly. Consequently, psychologists must master the art of presenting perfect-looking results just to survive in the profession. This favors aesthetic criteria of presentation in a way that harms science’s search for truth. Shallow standards of statistical perfection distort analyses and undermine the accuracy of cumulative data; narrative expectations encourage dishonesty about the relationship between results and hypotheses; criteria of novelty suppress replication attempts. Concerns about truth in research are emerging in other sciences and may eventually descend on our heads in the form of difficult and insensitive regulations. I suggest a more palatable solution: to open the bottleneck, putting structures in place to reward broader forms of information sharing beyond the exquisite art of present-day journal publication.

scholarly journals MYELODYSPLASTIC SYNDROMES AND IRON CHELATION THERAPY

2017 ◽  
Vol 9 (1) ◽  
pp. e2017021 ◽  
Author(s):  
Emanuele Angelucci ◽  
Silvana Anna Maria Urru ◽  
Federica Pilo ◽  
Alberto Piperno
Keyword(s):  
Iron Overload ◽  
Myelodysplastic Syndromes ◽  
Tissue Damage ◽  
Clinical Evidence ◽  
New Technologies ◽  
Iron Chelation ◽  
Organ Damage ◽  
Evidence Base ◽  
Toxic Damage ◽  
The Relationship

Over recent decades we have been fortunate to witness the advent of new technologies and of an expanded knowledge and application of chelation therapies to the benefit of patients with iron overload. However, extrapolation of learnings from thalassemia to the myelodysplastic syndromes (MDS) has resulted in a fragmented and uncoordinated clinical evidence base. We’re therefore forced to change our understanding of MDS, looking with other eyes to observational studies that inform us about the relationship between iron and tissue damage in these subjects. The available evidence suggests that iron accumulation is prognostically significant in MDS, but levels of accumulation historically associated with organ damage (based on data generated in the thalassemias) are infrequent. Emerging experimental data have provided some insight into this paradox, as our understanding of iron-induced tissue damage has evolved from a process of progressive bulking of organs through high-volumes iron deposition, to one of ‘toxic’ damage inflicted through multiple cellular pathways. Damage from iron may therefore occur prior to reaching reference thresholds, and similarly, chelation may be of benefit before overt iron overload is seen. In this review, we revisit the science and clinical evidence for iron overload in MDS to better characterise the iron overload phenotype in these patients, which is distinct from the classical transfusional and non-transfusional iron overload syndrome. We hope this will provide a conceptual framework to better understand the complex associations between anemia, iron and clinical outcomes, to accelerate progress in this area.

scholarly journals Measurements of buccal gingival and alveolar crest thicknesses of premolars using a noninvasive method

2020 ◽  
Vol 22 (4) ◽  
pp. 409
Author(s):  
Meng Sun ◽  
Wei Yao ◽  
Yong Qiang Deng ◽  
Jun Cao ◽  
He Meng
Keyword(s):  
Reliable Method ◽  
Strong Positive Correlation ◽  
Periodontal Tissue ◽  
Noninvasive Method ◽  
Gingival Thickness ◽  
Alveolar Crest ◽  
Maxillary Premolars ◽  
Reproducible Method ◽  
Human Participants ◽  
The Relationship

Aims: Knowledge of gingival thickness (GT) and alveolar crest thickness (ACT) is essential for performing various surgical and non-surgical procedures in oral healthcare. However, a noninvasive, no-radiation and reproducible method for measuring GT and ACT is not yet determined. This study aimed to measure the buccal GT and ACT of premolars using 15-MHz B-mode ultrasonography (US) and to explore the relationship between GT and ACT.Material and methods: The GT in four swine mandibles was measured using15-MHz B-mode US and using K-file needles to gauge the accuracy of US. B-mode US at 15 MHz was also used to measure periodontal tissue structures including buccal GT3 (3 mm apical to the gingival margin) and ACT in 400 premolars of 50 human participants with healthy periodontium.Results: There was a strong positive correlation between US and invasive K-file needle measurements of GT in swine mandibles (p<0.05). The correlation between buccal GT3 and ACT of premolars was moderately positive (p<0.05). The gingiva of the maxillary premolars and ACT of the maxillary first premolars were thicker in men than in women (p<0.05).Conclusions: B-mode US at 15 MHz is a valid and reliable method for measuring GT and ACT and for evaluating their relationship. 

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