The predictability of arch expansion with the Invisalign First system in children with mixed dentition: a retrospective study.

This study aimed to quantify the predictability of arch expansion in children with early mixed dentition treated with the Invisalign First® system and evaluate the clinical factors for the predictability of arch expansion. Pretreatment, predicted and posttreatment digital models from Invisalign's ClinCheck® software were obtained for 90 children with mean (standard deviation) age of 8.42 (0.

Decompression Illness in Divers With or Without Patent Foramen Ovale : A Cohort Study.

Background: In previous studies, the prevalence of patent foramen ovale (PFO) has been reported to be higher in scuba divers who experienced decompression illness (DCI) than in those who did not.

Objective: To assess the association between PFO and DCI in scuba divers.

Design: Prospective cohort study.

Three-Dimensional Myocardial Strain for the Prediction of Clinical Events in Patients With ST-Segment Elevation Myocardial Infarction.

Background: Two-dimensional (2D) strain provides more predictive power than ejection fraction (EF) in patients with ST-elevation myocardial infarction (STEMI). 3D strain and EF are also expected to have better clinical usefulness and overcome several inherent limitations of 2D strain. We aimed to clarify the prognostic significance of 3D strain analysis in patients with STEMI.

Efficacy and Safety of 3 Versus 6 Months of Dual-Antiplatelet Therapy in Patients Implanted With a Coroflex ISAR Stents: A Prospective, Multicenter, Randomized Clinical Trial.

Background: The optimal duration of dual-antiplatelet therapy (DAPT) after implantation of a drug-eluting stent (DES), especially recently developed polymer-free DESs, is unknown. This study examined the efficacy and safety of 3- versus 6-month DAPT in patients implanted with Coroflex ISAR polymer-free DESs.

Methods: Between May 2015 and August 2020, 488 patients who underwent Coroflex ISAR stent implantation were enrolled in the study and randomly assigned to the 3-month (n=244) or 6-month (n=244) DAPT group.

Assessment of dental caries lesion activity status using quantitative parameters obtained from the quantitative light-induced fluorescence method and difference of microbial distribution in primary molars.

Background: This study aimed to assess differences in quantitative measures obtained from the quantitative light-induced fluorescence method and microbial composition of carious dentin and saliva according to the activity status of caries lesions in primary molars.

Methods: A total of 34 teeth from 34 children were evaluated in this study. The activity status of carious lesions was classified using the International Caries Classification and Management System criteria (active or inactive).

Association Between Low Muscle Mass and Prognosis of Patients With Coronary Artery Disease Undergoing Percutaneous Coronary Intervention.

Background Low muscle mass has been associated with poor prognosis in certain chronic diseases, but its clinical significance in patients with coronary artery disease is unclear. We assessed the clinical significance of 2 easily measured surrogate markers of low muscle mass: the ratio of serum creatinine to serum cystatin C (Scr/Scys), and the ratio of estimated glomerular filtration rate by Scys to Scr (eGFRcys/eGFRcr). Methods and Results Patients with coronary artery disease undergoing percutaneous coronary intervention were prospectively enrolled from a single tertiary center, and Scr and Scys levels were simultaneously measured at admission.

Prognostic factors for the survival of primary molars following pulpotomy with mineral trioxide aggregate: a retrospective cohort study.

Objectives: The aim of the present study was to evaluate potential factors influencing the success rates of mineral trioxide aggregate (MTA) pulpotomy performed in primary molars.

Materials And Methods: A total of 347 teeth treated between March 2012 and December 2016 in 258 patients, with a mean age of 5.3 ± 1.

Dual Antiplatelet Therapy Duration Determines Outcome After 2- But Not 1-Stent Strategy in Left Main Bifurcation Percutaneous Coronary Intervention.

Objectives: The aim of this study was to investigate clinical outcomes after left main coronary artery (LM) bifurcation percutaneous coronary intervention (PCI) and the impact of the duration of dual antiplatelet therapy (DAPT) according to treatment strategy.

Background: There are limited data regarding the optimal PCI strategy for LM bifurcation lesions with new-generation drug-eluting stents.

Methods: A patient-level pooled analysis of 5 nationwide multicenter registries was performed.

Quantified degree of eccentricity of aortic valve calcification predicts risk of paravalvular regurgitation and response to balloon post-dilation after self-expandable transcatheter aortic valve replacement.

Background: Limited data exist regarding the impact of aortic valve calcification (AVC) eccentricity on the risk of paravalvular regurgitation (PVR) and response to balloon post-dilation (BPD) after transcatheter aortic valve replacement (TAVR). We investigated the prognostic value of AVC eccentricity in predicting the risk of PVR and response to BPD in patients undergoing TAVR.

Methods: We analyzed 85 patients with severe aortic stenosis who underwent self-expandable TAVR (43 women; 77.

Gender Difference in the Association between Aortic Pulse Pressure and Left Ventricular Filling Pressure in the Elderly: An Invasive Hemodynamic Study.

Background: This study was conducted to determine the association between aortic pulse pressure (APP) and left ventricular (LV) filling pressure in the elderly of both genders.

Methods: A total of 211 stable elderly subjects (age ≥65 years, mean age 72.1 ± 5.

Corneal topographic and tomographic analysis of fellow eyes in unilateral keratoconus patients using Pentacam.

Purpose: To evaluate topographic and tomographic changes in fellow eyes in unilateral keratoconus (KCN) patients by comparing them with normal eyes.

Design: Retrospective comparative case series.

Methods: Fourteen eyes of 14 patients with unilateral KCN and 34 eyes of 34 refractive surgery candidates were divided into 3 diagnostic groups using a Pentacam rotating Scheimpflug camera: advanced KCN eyes of unilateral KCN (KCN group, 14 eyes), normal fellow eyes of unilateral KCN (fellow eye group, 14 eyes), and refractive surgery candidates (normal group, 34 eyes).

Effect of tailored antiplatelet therapy on periprocedural myonecrosis in patients with diabetes mellitus (from the DM-Verify Now Trial).

We investigated whether additional platelet inhibition with a glycoprotein IIb/IIIa inhibitor would be beneficial in reducing the risk of periprocedural myocardial infarction (PMI) in diabetic patients with high residual platelet reactivity (HPR). Patients with diabetes mellitus were administered aspirin and clopidogrel at a 300-mg loading dose 1 day before the procedure, and the VerifyNow P2Y(12) assay was performed just before percutaneous coronary intervention. Patients with HPR, defined as a P2Y(12) reaction unit of ≥270 were randomly assigned to group A or control group C1.

A case of successful colonoscopic treatment of colonic obstruction caused by phytobezoar.

A phytobezoar is the most common type of bezoar, which is a gastrointestinal mass composed of vegetable. A persimmon is a common cause of a phytobezoar. The majority of bezoars are found in the stomach, with the small intestine being the next most commonly involved site.

Subclinical coronary artery disease as detected by coronary computed tomography angiography in an asymptomatic population.

Background And Objectives: Primary prevention of coronary artery disease (CAD) has become a public health issue, according to increasing awareness of the substantial risks posed by asymptomatic atherosclerosis. The aims of this study were to determine the prevalence and characteristics of subclinical CAD using coronary computed tomography angiography (CCTA), and to evaluate the role of this advanced technology in identifying subclinical CAD in asymptomatic Korean individuals, compared with conventional risk stratification.

Subjects And Methods: We enrolled 4,320 consecutive asymptomatic individuals (61% males, aged 50±9 years), who underwent 64-slice CCTA during a routine health check.

[A case of inferior vena cava thrombosis and acute pancreatitis in a patient with ulcerative colitis].

A 21-year-old man admitted complaining of sudden severe epigastric pain for 1 day. He had been diagnosed as ulcerative colitis (UC) and taking mesalazine for two months. UC was in nearly complete remission at admission.

Comparison of drug-eluting versus bare-metal stent implantation in ST-elevation myocardial infarction patients with renal insufficiency: results from the national registry in Korea.

Introduction: It is unknown whether drug-eluting stents (DES), in comparison with bare-metal stents (BMS), improve clinical outcomes of ST-elevation myocardial infarction (STEMI) patients with renal insufficiency. We aimed to compare the clinical outcomes of BMS versus DES, as well as sirolimus-eluting stents (SES) versus paclitaxel-eluting stents (PES), in STEMI patients with renal insufficiency.

Methods: From the Korea Acute Myocardial Infarction Registry, 874 STEMI patients with renal insufficiency (glomerular filtration rate < 60 ml/min) comprising 116 patients with BMS and 758 patients with DES (430 SES and 328 PES) implantation were selected.

Cytomegalovirus colitis in patients without inflammatory bowel disease: a single center study.

Objective: Cytomegalovirus (CMV) aggravates preexisting inflammatory bowel disease (IBD), and there are numerous reports of CMV colitis in IBD patients. However, little attention has been paid to CMV colitis in non-IBD patients. The aim was to determine the clinical manifestations, endoscopic appearance, and clinical course of CMV colitis in non-IBD patients.

Mechanical properties of blood-mixed polymethylmetacrylate in percutaneous vertebroplasty.

Study Design: Mechanical study of polymethylmetacrylate (PMMA) mixed with blood as a filler.

Purpose: An attempt was made to modify the properties of PMMA to make it more suitable for percutaneous vertebroplasty (PVP).

Overview Of Literature: The expected mechanical changes by adding a filler into PMMA included decreasing the Young's modulus, polymerization temperature and setting time.

Does "late catch-up" exist in drug-eluting stents: insights from a serial quantitative coronary angiography analysis of sirolimus versus paclitaxel-eluting stents.

Background: Recent studies have suggested the possibility of late catch-up after drug-eluting stent implantation. There are limited data on whether late catch-up exists in sirolimus-eluting stents (SESs) and paclitaxel-eluting stents (PESs).

Methods: Consecutive patients were routinely recommended 2 serial angiographic follow-ups (at 6-9 and 18-24 months post-percutaneous coronary intervention).

Two cases of Plasmodium vivax Malaria with the clinical picture resembling toxic shock.

Fatal complications of Plasmodium falciparum malaria have been reported. However, complicated P. vivax malaria is rare.

Bilateral visual loss in craniodiaphysial dysplasia.

Purpose: To report a rare case of craniodiaphysial dysplasia (CDD) that resulted in a profound loss of vision in both eyes.

Design: Observational case report.

Methods: A 2-year-old girl presented with midfacial anomaly.