Relationship between organophosphate and pyrethroid pesticides and metabolic syndrome in Korean farmers.

Background: The global use of pesticides steadily increased until the early 2010s. Pesticides play a significant role in agriculture in Korea. Metabolic syndrome is more prevalent in rural areas than in urban areas.

Effect of night shift work on the reduction of glomerular filtration rate using data from Korea Medical Institute (2016-2020).

Background: Shift work increases the risk of chronic diseases, including metabolic diseases. However, studies on the relationship between shift work and renal function are limited. The aim of this study was to investigate the association between shift work and a decreased glomerular filtration rate (GFR).

Retrospective study about the postoperative stability of zygomaticomaxillary complex fracture.

Background: The aim of this study is to evaluate the postoperative stability of zygomaticomaxillary complex (ZMC) fractures according to the number of fixation sites and to investigate the direction of postoperative displacement of the unfixed part of the fractured segment.

Methods: This study was retrospectively performed on 38 patients who were treated by open reduction and internal fixation of ZMC fractures and were taken postoperative computed tomography (CT) between February 2012 and July 2019. The patients were classified into 3 groups: 1-point fixation, 2-point fixation, 3-point fixation according to the number of fixations.

The accuracy of a partially guided system using an in-office 3D-printed surgical guide for implant placement.

Aim: To conduct an observational study evaluating the efficacy of a partially guided system for implant surgery.

Materials And Methods: The study included 48 implant placements in 24 patients. Following virtual implant planning with designated software, a surgical guide was fabricated using a 3D desktop printer.

Decompression of Large Cyst Invading the Mandibular Canal Leading to Reduced Cyst Volume and Increased Mandibular Canal Length.

Purpose: The mandibular canal is damaged by the growth of cysts, and remodeling of the mandibular canal is observed as the size of the cyst decreases after decompression procedures. This study aimed to estimate changes in cyst volume and mandibular canal length using cone-beam computed tomography (CBCT) before and after decompression surgery.

Materials And Methods: A retrospective cohort study was conducted in patients with a diagnosis of mandibular cyst invading the mandibular canal between 2012 and 2018.

Exploring dental students' knowledge of HIV and attitudes towards saliva screening for HIV.

Introduction: Early detection of human immunodeficiency virus (HIV) allows antiretroviral therapy to commence, improving patient outcomes. Screening for HIV with saliva can be undertaken by dental practitioners. Research has found the procedure to be better accepted by patients than traditional blood testing.

Porous SnO nanostructure with a high specific surface area for improved electrochemical performance.

Tin oxide (SnO) has been attractive as an alternative to carbon-based anode materials because of its fairly high theoretical capacity during cycling. However, SnO has critical drawbacks, such as poor cycle stability caused by a large volumetric variation during the alloying/de-alloying reaction and low capacity at a high current density due to its low electrical conductivity. In this study, we synthesized a porous SnO nanostructure (n-SnO) that has a high specific surface area as an anode active material using the Adams fusion method.

Erratum: Text in Figure 1A. Factors affecting treatment outcomes in patients with oral lichen planus lesions: a retrospective study of 113 cases.

[This corrects the article on p. 213 in vol. 48, PMID: 30202605.

Factors affecting treatment outcomes in patients with oral lichen planus lesions: a retrospective study of 113 cases.

Purpose: Oral lichen planus (OLP) is a chronic oral mucosal disease that has been recognized as an immune condition. The purpose of this study was to evaluate factors affecting the clinical outcomes of topical corticosteroid application on OLP lesions using dexamethasone gargle and ointment.

Methods: The charts of patients who were clinically diagnosed with OLP and treated with dexamethasone from July 2003 to August 2017 at the Section of Dentistry of Seoul National University Bundang Hospital were thoroughly evaluated to identify subjects who were suitable for this retrospective study.

Comparative Study of the Early Loading of Resorbable Blasting Media and Sandblasting with Large-grit and Acid-etching Surface Implants: A Retrospective Cohort Study.

Purpose: This study compares the prognosis (the survival rate and marginal bone loss) of resorbable blasting media (RBM) surface implants and sandblasting with large-grit and acid-etching (SLA) surface implants in the early loading.

Methods: This study targeted 123 patients treated by implants installation from January 2008 to March 2010. The loading was initiated in the maxilla within three to four months and in the mandible within one to two months.

Agrobacterium tumefaciens-mediated transformation of the lichen fungus, Umbilicaria muehlenbergii.

Transformation-mediated mutagenesis in both targeted and random manners has been widely applied to decipher gene function in diverse fungi. However, a transformation system has not yet been established for lichen fungi, severely limiting our ability to study their biology and mechanism underpinning symbiosis via gene manipulation. Here, we report the first successful transformation of the lichen fungus, Umbilicaria muehlenbergii, via the use of Agrobacterium tumefaciens.

One-Year Prospective Study of 7-mm-Long Implants in the Mandible: Installation Technique and Crown/Implant Ratio of 1.5 or Less.

This study prospectively evaluated the clinical prognoses of short implants (7-mm long) in the mandible. We investigated the clinical prognosis of short implants in 20 patients (46 implants) according to the installation technique (submerged or nonsubmerged), installation depth (5.5-mm depth, 7-mm depth), and crown/implant ratio.

A pharmacodynamic comparison study of different botulinum toxin type A preparations.

Background: Because more botulinum toxin (BoNT) preparations have become available worldwide, there is a clinical need to compare the pharmacologic profiles of these products.

Objective: We compared three different preparations: onabotulinumtoxinA (ona-BoNT/A), abobotulinumtoxinA (abo-BoNT/A), and Neuronox (neu-BoNT/A), in a mouse model using a digit abduction scoring (DAS) assay.

Methods: The efficacy, duration of effect, and safety margin of each preparation was determined after delivering a single injection to the right gastrocnemius (0-240 U/kg body weight of neu-BoNT/A or ona-BoNT/A; 0-600 Speywood Units/kg body weight of abo-BoNT/A).

Mouse compound muscle action potential assay: an alternative method to conduct the LD₅₀ botulinum toxin type A potency test.

Purpose: We performed a prevalidation of the compound muscle action potential (CMAP) assay to determine the potency of botulinum neurotoxin type A (BoNT/A) with the aim of substituting for the mouse lethality test (LD₅₀), which is used for quality control.

Methods: Prevalidation experiments were performed to demonstrate the specificity, linearity, accuracy, precision, range, limit of quantitation (LOQ), and robustness of the assay. For specificity, toxin detection ability was determined in the presence of neutralizing antibodies (0.