• Title/Summary/Keyword: a review of the literature

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Ectopic teeth with disparate migration: A literature review and new case series

  • Pallak Arora ;Madhu K. Nair ;Hui Liang ;Paras B. Patel ;John M. Wright;Mehrnaz Tahmasbi-Arashlow
    • Imaging Science in Dentistry
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    • v.53 no.3
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    • pp.229-238
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    • 2023
  • Purpose: Ectopic eruption can be defined as the emergence of a tooth in an abnormal location, where the tooth does not follow its typical eruption pathway. While ectopic eruption within the dentate region is well-documented in the literature, ectopic eruption in non-dentate regions is relatively rare. This study aimed to report 6 cases of ectopic teeth and present a systematic review of the English-language literature on ectopic teeth, emphasizing demographic characteristics, radiographic features, potential complications, and treatment options. Materials and Methods: A literature search was conducted using the PubMed, Medline, Web of Science, and Cochrane databases. The demographic data and radiographic findings of patients presenting with ectopic teeth were recorded. Results: The literature review yielded 61 cases of ectopic teeth, with patients ranging in age from 3 to 74 years. The findings from these previously reported cases demonstrated that the most common location for ectopic teeth was the maxillary sinus, which is consistent with this case series. The Pearson chi-square test was performed to evaluate the correlation between age and location of ectopic teeth, and the results were found to be statistically significant (P<0.05). However, no statistically significant relationship was observed between sex and the location of ectopic teeth. Conclusion: The distinct features of these cases warrant reporting. This study presents the first case of supernumerary teeth in the condyle without any associated pathosis. Another notable characteristic is the pre-eruptive resorption of 2 inverted supernumerary teeth ectopically located in the palate, which predisposes to sinus opacification.

A Review on the Hazards of Flavoring Chemicals in Coffee Roasting Proces (커피 로스팅 공정에서 발생되는 향기물질의 유해성 고찰 및 노동자 건강보호 방안)

  • Rim, Kyung-Taek
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.29 no.2
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    • pp.119-140
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    • 2019
  • Objectives: This study was based on the occurrence of a coffee roasting process-related disorder(bronchiolitis obliterans; published by NIOSH in the US) among workers exposed to chemicals called diacetyl in a coffee processing facility. Flavorings added to coffee contain diacetyl and 2,3-pentanedione, all of which are subject to exposure in a number of food manufacturing processes, including coffee roasting, grinding, and packaging. Therefore, this study aims to review the toxicity to workers related to food processing and food additive manufacturing to prevent occupational diseases. Methods: We surveyed the related literature, domestic and international references, and the status of relevant domestic and foreign professional organizations. The present situation of workers was investigated by reviewing literature on the safety and health of workers in the coffee roasting process using domestic and foreign literature and presentations. Expert advisory opinions were reflected, and experts were consulted by participating in domestic and overseas academic conferences. Results: Most of the fragrance materials for coffee were harmful and hazardous substances according to the GHS classification, and research was carried out through a second external consultation. A literature review on the measurement of air pollutant emissions from coffee roasters and the estimation of air pollutant emissions during coffee roasting examined the characteristics of pollutants emitted during coffee roasting. Conclusions: Two chemicals identified as causing bronchiolitis obliterans in the coffee roasting process are believed to explain why the disease is difficult to treat. This information can be used effectively in the future prevention of this disease. Future studies should clearly identify the potential for toxicity of alpha-diketones and the bases of OELs in relation to the occurrence of obstructive bronchiolitis, including measurement of various organic compounds and alpha-diketones from ground coffee, as well as various coffee grinds and coffee bean varieties. In particular, it is necessary to clarify the current understanding of the dose-response relationship between alpha-diketone and lung disease in workers involved in coffee roasting.

A Study on the Concept of Korean Ruralism - Focusing on the Comparison of Research on Ruralism and Rurality in Korea- (한국 농촌다움 개념 연구 - 농촌다움과 농촌성 연구 비교 중심으로 -)

  • Yi, Dong-Yoon;Son, Yong-Hoon
    • Journal of Korean Society of Rural Planning
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    • v.27 no.3
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    • pp.69-84
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    • 2021
  • This study aims to understand the concept of 'ruralism' in Korea by comparing with 'rurality' which were dealt with in various fields related to rural areas in Korea. This study conducted a systematic literature review as a methodology. The process is defining key questions, searching for documents, classifying documents, extracting data, and presenting results. The key questions were set to 'How has the term 'ruralism' been used in various studies?' and 'How can the concept of rurality in Korea be organized?' according to the purpose of the study. The study retrieved literature by searching on Korean academic database, RISS and DBpia, using the five keywords '농촌성', '농촌다움', '농촌다운', 'Rurality,' and 'Ruralism.' The search yielded 1,014 documents which were thereafter screened by systematic literature review process. After sifting, only 31 publications were found suitable for inclusion in the final analysis. This study organized them into four categories: rural concept, rural landscape, rural tourism, and rural development. The literature divided into four types. Type I is a study that deals only with economy·society among studies related to rurality, Type II is a study that deals with both the economic·social and physical environment, Type III is a study that deals with the physical environment of a rural area and presents the rural planning principle as maintenance and preservation. Finally, Type IV is a study that presents ruralism as a new rural planning principle for a future rural area. In the end, the study discussed some implications on defining ruralism in Korea.

Review of static soil-framed structure interaction

  • Dalili S., Mohammad;Huat, B.B.K.;Jaafar, M.S.;Alkarni, A.
    • Interaction and multiscale mechanics
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    • v.6 no.1
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    • pp.51-81
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    • 2013
  • A wide literature review on Static Soil-Structure-Interaction (SSI) is done to highlight the key impacts of soil complexity on structural members of framed structures. Attention is paid to the developed approaches, i.e., conventional and Finite Element Method (FEM), to emphasize on deficiencies and merits of the proposed methods according to their applicability, accuracy and power to model and idealization of the superstructures as well as the soil continuum. Proposed hypothesis are much deeply discussed herein for better understanding which is normally neglected in literature review papers due to the large number of references and limit of space.

The Effect of Laser Therapy for Stroke Patients : A Systematic Review and Meta-analysis (뇌졸중 환자에 대한 레이저 치료의 효과: 체계적 문헌고찰 및 메타분석)

  • Da-young An;Seung-ho Sun
    • The Journal of Korean Medicine
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    • v.45 no.1
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    • pp.45-64
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    • 2024
  • Objectives: This study is purposed to investigate the effect and safety of laser therapy for stroke patients by systematic review and meta-analysis of the randomized controlled trials (RCTs). Methods: RCTs on the treatment of laser therapy for stroke patients were selected among the literature published from January 2000 to June 2022 in twelve domestic and foreign databases. The quality of the literature was evaluated using the Cochrane's Risk of Bias tool and RevMan 5.4 was used for the synthesis of results. Results: Total 2,598 patients with stroke were finally selected from 18 RCTs. Meta-analysis showed that laser therapy was effective in significantly improving activities of daily living (MBI), motor function (effective rate), upper motor function (FMA-UE), shoulder pain related factors (CGRP, ET-1, BK). Overall, the risk of bias was uncertain or low in the quality assessment of the literature. Conclusions: Although it is unclear that laser therapy is more effective than sham laser, laser therapy might be more effective in improving symptoms than conventional rehabilitation alone. Furthermore, no serious adverse events were founded in laser therapy studies. However, the quality of the selected literature was generally low. Therefore, further studies with high methodological quality on laser therapy for stroke patients would be required in the future.

Adjusting for Confounders in Outcome Studies Using the Korea National Health Insurance Claim Database: A Review of Methods and Applications

  • Seung Jin Han;Kyoung Hoon Kim
    • Journal of Preventive Medicine and Public Health
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    • v.57 no.1
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    • pp.1-7
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    • 2024
  • Objectives: Adjusting for potential confounders is crucial for producing valuable evidence in outcome studies. Although numerous studies have been published using the Korea National Health Insurance Claim Database, no study has critically reviewed the methods used to adjust for confounders. This study aimed to review these studies and suggest methods and applications to adjust for confounders. Methods: We conducted a literature search of electronic databases, including PubMed and Embase, from January 1, 2021 to December 31, 2022. In total, 278 studies were retrieved. Eligibility criteria were published in English and outcome studies. A literature search and article screening were independently performed by 2 authors and finally, 173 of 278 studies were included. Results: Thirty-nine studies used matching at the study design stage, and 171 adjusted for confounders using regression analysis or propensity scores at the analysis stage. Of these, 125 conducted regression analyses based on the study questions. Propensity score matching was the most common method involving propensity scores. A total of 171 studies included age and/or sex as confounders. Comorbidities and healthcare utilization, including medications and procedures, were used as confounders in 146 and 82 studies, respectively. Conclusions: This is the first review to address the methods and applications used to adjust for confounders in recently published studies. Our results indicate that all studies adjusted for confounders with appropriate study designs and statistical methodologies; however, a thorough understanding and careful application of confounding variables are required to avoid erroneous results.

Photovoice as a research method and a strategy for community health promotion (지역사회 건강증진 연구방법 및 전략으로서의 포토보이스)

  • Yoo, Seunghyun
    • Korean Journal of Health Education and Promotion
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    • v.32 no.1
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    • pp.77-87
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    • 2015
  • Objectives: This study aims to explain the process of photovoice, to review relevant research cases, and to discuss the issues in photovoice applications for community health promotion. Methods: Literature review is performed on photovoice manuals, systematic review literature on international photovoice research, and Korean photovoice studies. The review was based on 8 research papers and 6 practice manuals. Results: Photovoice so far has specified its orientation to participatory research. Its implementation includes photovoice training, photo taking and sharing, interviews and discussions, photo exhibit, and social action planning for policy change. SHOWeD questions and the like guide photovoice discussions while they face some challenges in application. Social action planning for policy change part of the photovoice needs attention in implementation and evaluation. Conclusions: Adherence to the participatory principles and action research orientation in photovoice requires persistent efforts. Process and impact evaluation with development of photovoice research infrastructure will enhance photovoice application.

Literature review on oral health among people with disabilities in Korea (2000-2015) (국내 장애인의 구강 관련에 대한 문헌고찰(2000년-2015년))

  • Choi, Eun-Mi;Choi, Won-Ick;Son, Jung-Hui
    • Journal of Korean society of Dental Hygiene
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    • v.17 no.6
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    • pp.957-967
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    • 2017
  • Objectives: This study consisted of a literature review on oral health among people with disabilities, and to present the factors that should be considered in developing an oral health program for people with disabilities. Methods: The key words 'people with disabilities' and 'oral health' were searched in 4 Korean academic journals and 5 online search engines and a total of 635 papers were identified. Duplicate papers were removed, and the literature selection criteria were applied to the remaining papers. Finally, a total of 45 papers were used in the review. Results: First, people with disabilities were the most common research subjects, followed by dental students, dental hygiene students, dentists, dental hygienist and guardians and special education teachers. Second, the most frequently studied research topic was dental examination, followed by oral health behavior and behavior of using dental clinics. Third, research purposes included the status of oral health, the quality of oral health, dental treatment, the use of oral health service, and oral hygiene behavior and perception. Fourth, the most frequently discussed policy task was expansion of research subjects, followed by oral hygiene and policy development. Conclusions: To enhance the oral health of people with disabilities who have difficulty in keeping their teeth clean and healthy on their own, development of an oral hygiene training program is required not only for people with disabilities, but also for guardians and teachers. It is equally important to examine oral health behavior that could potentially affect the status of oral health and create a more accurate and systematic oral hygiene method. In addition, the government, together with various other research institutes, should conduct an oral health survey of a representative sample of people with disabilities to determine oral health status and facilitate improvements to oral hygiene programs.

Pancreatic Paraganglioma: a Case Report and Literature Review

  • Park, Joon Suk;Min, Seon Jeong;Min, Soo Kee;Choi, Jung-Ah
    • Investigative Magnetic Resonance Imaging
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    • v.25 no.1
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    • pp.47-52
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    • 2021
  • Paraganglioma is a rare tumor of paraganglia, derived from neural crest cells in sympathetic or parasympathetic ganglions. It can be widely distributed from the skull base to the bottom of the pelvis. The pancreas, however, is a rare location of this neoplasm, and only a limited number of cases have been reported in the English literature, especially with gadoxetic-acid-enhanced magnetic resonance imaging (MRI) and diffusion-weighted images (DWI). We herein report a case of pathologically proven paraganglioma in the pancreas head with a literature review on endoscopic ultrasonography (EUS), computed tomography (CT), gadoxetic-acid-enhanced MRI, and DWI sequence.

Reproductive Toxic Chemicals at Work and Efforts to Protect Workers' Health: A Literature Review

  • Rim, Kyung-Taek
    • Safety and Health at Work
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    • v.8 no.2
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    • pp.143-150
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    • 2017
  • A huge number of chemicals are produced and used in the world, and some of them can have negative effects on the reproductive health of workers. To date, most chemicals and work environments have not been studied for their potential to have damaging effects on the workers' reproductive system. Because of the lack of information, many workers may not be aware that such problems can be related to occupational exposures. Newly industrialized countries such as Republic of Korea have rapidly amassed chemicals and other toxicants that pose health hazards, especially to the reproductive systems of workers. This literature review provides an overview of peer-reviewed literature regarding the teratogenic impact and need for safe handling of chemicals. Literature searches were performed using PubMed, Google Scholar, and ScienceDirect. Search strategies were narrowed based on author expertise and 100 articles were chosen for detailed analysis. A total of 47 articles met prespecified inclusion criteria. The majority of papers contained studies that were descriptive in nature with respect to the Medical Subject Headings (MeSH) terms and keywords: "reproductive and heath or hazard and/or workplace or workers or occupations." In the absence of complete information about the safe occupational handling of chemicals in Republic of Korea (other than a material safety data sheet), this review serves as a valuable reference for identifying and remedying potential gaps in relevant regulations. The review also proposes other public health actions including hazard surveillance and primary prevention activities such as reduction, substitution, ventilation, as well as protective equipment.