Color stability and marginal adaptation of ceramic veneers cemented using different composite resins.

BACKGROUND: The purpose of this study was to compare the color stability and marginal adaption of lithium disilicate veneers before and after thermocycling using various resin composite materials employed as cement. METHODS: Laminate veneer preparation was done on an acrylic tooth according to standardized procedures. The veneer preparations were duplicated into twenty-one dies. The veneers were fabricated from lithium disilicate using the CEREC in Lab system. According to the cement type, the twenty-one die specimens were randomly divided into three equal groups: group I, with light cured adhesive resin cement (N.=7), group II, with flowable light cured composite, and group III, with preheated nano filled composite. The cemented specimens underwent 5000 thermocycling cycles. Color was assessed using a reflective spectrophotometer. The vertical marginal gap, following cementation and thermocycling, was measured using a digital microscope. One-way ANOVA followed by Tukey's post-hoc test was used to statistically assess the data. RESULTS: After thermocycling, there was no statistically significant difference in ΔE among cement type groups for color stability (P=0.369). However, the preheated composite showed the lowest ΔE mean values. Within adhesive resin cement and flowable composite groups, marginal gap means values recorded after thermocycling were significantly higher than those after cementation (P=0.013 and P<0.001, respectively). CONCLUSIONS: Although preheated composite cement showed the highest marginal discrepancy, it would be the best choice regarding color stability.

Prevalence of Nonalcoholic Fatty Liver Disease at a Tertiary Care Center in Saudi Arabia.

OBJECTIVES: To determine the prevalence of nonalcoholic fatty liver disease (NAFLD) in patients who received abdominal imaging and to assess the clinical and metabolic characteristics of NAFLD. METHODS: This is a retrospective study of 500 family medicine patients (aged 18 years and older) who completed abdominal imaging at King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia, from January 2016 through June 2020. RESULTS: The patients enrolled had a mean age of 49.41 ± 14.80 years, with 300 females and 349 of Saudi nationality. The mean body mass index (BMI) was 29.43 ± 6.61 kg/m2, while 373 of the enrolled subjects were either overweight or obese. Half of our patients had some form of fatty liver in the imaging results. Regarding chronic medical conditions, 33.4%, 31.4%, and 29.4% had a history of hypertension, type 2 diabetes mellitus (DM2), and dyslipidemia, respectively. The mean Fibrosis-4 (FIB-4) index was 0.94 ± 0.72. Body mass index was higher among fatty liver patients (p = 0.001). Hypertension, coronary artery disease, dyslipidemia, and DM2 were more common in the fatty liver group. CONCLUSION: Our findings reiterate the significance of obesity and the coexistence of cardiovascular risk factors in NAFLD. Further studies are needed to corroborate and expand our findings, enabling more refined strategies for the prevention, risk prediction, early detection, and management of NAFLD.

The Impact of Continuity of Care on Health Indicators in Patients With Type 2 Diabetes Mellitus in Family Medicine Clinics in Riyadh.

BACKGROUND: Diabetes Mellitus Type 2 (DM2) is highly prevalent in Saudi Arabia, with many experiencing complications due to the disease. Family medicine physicians are usually the primary care providers responsible for the medical management of type 2 diabetes mellitus patients. Microvascular and macrovascular complications can occur if type 2 diabetes mellitus is poorly managed. Effective management of health indicators in patients with DM2 relating to glycated hemoglobin (HbA1c), low density lipoprotein cholesterol, blood pressure, and tobacco use is an essential part of medical care to prevent complications. Due to the projected increase in the number of patients with DM2, there is huge concern surrounding the management of this chronic illness that requires review. This study aims to evaluate the impact of continuity of care on health indicators among family medicine patients diagnosed with diabetes mellitus type 2 and to analyze the effect of continuity of care regarding the completion of age-appropriate preventive health screenings. METHODS:  This is a retrospective cohort study. Data collected from electronic medical records of patients 40-75 years of age that received care at the Family Medicine clinics that were diagnosed with type 2 diabetes mellitus with ≥4 clinic visits from January 1, 2017, to June 30, 2020, at King Faisal Specialist Hospital & Research Centre in Riyadh, Saudi Arabia. Data collected included demographic data, body mass index, smoking status, blood pressure, past medical history, preventive health screening completed, and laboratory results, including HbA1c and lipid profile. The continuity of care index and usual provider continuity score indices were calculated for the analysis to measure continuity of care. RESULTS:  Three hundred and fifty-two patients were included in the study. Most of the patients were Saudi (74.15%), female (51.99%), and married (82.67%). In addition, 90.34% accounted for a high usual provider continuity of care score (UPCS), and 64.20% of the patients had a high continuity of care index (COCi). Younger age groups were significantly more prevalent in the high UPCS group (p=0.037). Additionally, patients of non-Saudi nationalities constituted a significantly larger proportion of the high UPCS group. Single patients showed high UPCS. Comorbidities were not different between the groups, except inflammatory joint disease, which was more common in the low COCi group. Preventative screening measures were also not different between the groups; however, the type of colon cancer screening differed, where patients with high COCi more frequently underwent colonoscopies (13.3% vs. 4.4%, p=0.015) instead of fecal occult blood tests. CONCLUSION:  For the first time, we report the implications of the continuity of care for DM2 patients in Saudi Arabia and the Middle East. Continuity of care did not result in the improvement of health indicators or in the completion of preventive health screenings in diabetic patients. Further studies are needed in the region to confirm our findings and assess the association between continuity of care and patient health indicators impact.

Assessment of the Effective Management of Patients With Severe Primary Hypercholesterolemia Under Care in Family Medicine Clinics at King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.

Background Atherosclerotic cardiovascular disease (ASCVD) is the primary cause of death in Saudi Arabia. Hypercholesterolemia is a prevalent risk factor that can lead to ASCVD. The American College of Cardiology/American Heart Association (ACC/AHA) guidelines have provided recommendations for managing severe primary hypercholesterolemia, defined as medically well adults 21-75 years of age with low-density lipoprotein cholesterol (LDL-C) ≥190 mg/dL (≥4.9 mmol/L). Underutilization of the guideline recommendations has led to concern and the need for further review. This study aims to review the management of severe primary hypercholesterolemia in the Family Medicine and Polyclinics at King Faisal Specialist Hospital and Research Centre (KFSH&RC) in Riyadh, Saudi Arabia. Methodology In this retrospective cohort study, data were obtained from electronic medical records of patients aged 21-75 years who received care in the Family Medicine and Polyclinics at KFSH&RC in Riyadh with LDL-C ≥190 (≥4.9 mmol/L). The data collected included demographics, body mass index (BMI), LDL-C blood level, and lipid-lowering medications prescribed. We measured the prevalence of hypercholesterolemia, reviewed if appropriate statin therapy was prescribed as per the ACC/AHA guidelines, and determined if treated patients with severe primary hypercholesterolemia achieved LDL-C ≤100 mg/dL (≤2.6 mmol/L) from January 1, 2015, until June 30, 2020. Results The prevalence of hypercholesterolemia was 7.4%. The sample size studied included 195 patients. The majority of patients were aged 40-59 years and were either overweight or obese. Treatment with a moderate-intensity statin was observed in 46.4% of patients, and 45.4% of patients were not prescribed a statin. The LDL-C ≤100 mg/dL (≤2.6 mmol/L) was not achieved in 88.3% of patients. Conclusions Despite guidelines, the majority of patients with severe primary hypercholesterolemia are inadequately managed. High-risk patients need to be diagnosed appropriately so that they receive proper treatment to prevent ASCVD. We encourage adherence to established guidelines in the management of severe primary hypercholesterolemia to prevent premature ASCVD.

Clinical and neurophysiological risk factors of learning disabilities in different types of idiopathic focal epilepsy.

Objectives: Academic difficulties are common in epileptic children. A learning disability (LD) is a reduction in the learning capacity of children or the intellectual ability of adults, which is different from mental retardation or dementia. Materials & Methods: The participants were 56 patients, of whom 35 were males (62.5%), and 21 were females (37.5%). The participants attended the Neurology Outpatient Clinic, the Sohag University Hospital, between December 2016 and May 2017. Children with chronological age between 7 and 16 years with idiopathic focal and normal mental and motor developmental history were enrolled in this cross-sectional study. The Revised Quick Neurological Screening Test was used to assess different types of LD. Results: LDs were present in 67.9% of our participants with a statistically significant association between LDs in one arm and younger age, earlier age of onset of epilepsy, frequent seizures, and seizure semiology, particularly of temporal lobe origin, in the other arm. In addition, left epileptic focus on EEG, prolonged treatment duration with antiepileptic drugs (AED), and polytherapy were significantly correlated with LDs. Conclusion: Many factors are significantly correlated with LDs in children with idiopathic focal epilepsy, like age of the patient, age of epilepsy onset, seizure semiology, prolonged AED treatment, and polytherapy.

Exposure to perfluoroalkyl substances in early pregnancy and risk of sporadic first trimester miscarriage.

Many first trimester sporadic miscarriages are unexplained and the role of environmental exposures is unknown. The present aim was to study if levels of Perfluoroalkyl substances (PFASs) in early pregnancy are associated with unexplained, sporadic first trimester miscarriage. The study was performed within the Swedish SELMA pregnancy cohort. Seventy-eight women with non-recurrent first trimester miscarriage were included and 1449 women were available as live birth controls. Eight PFASs were measured in first trimester serum. A doubling of perfluorooctanoic acid (PFOA) exposure, corresponding to an inter-quartile increase, was associated with an odds ratio (95%CI) for miscarriage of 1.48 (1.09-2.01) when adjusting for parity, age and smoking. Analyses per quartiles of PFOA exposure indicated a monotonic dose response association with miscarriage. A similar, but not significant, pattern was observed for perfluorononanoic acid (PFNA). For other PFAS, there were no associations with miscarriage. We have previously shown associations between early pregnancy PFAS exposures and preeclampsia, as well as lower birth weight. Now we report an association between PFOA and miscarriage within the same cohort, which may suggest shared but unknown mechanisms. The study can only represent a period of early placentation and clinical pregnancy loss during the second half of the first trimester.

The impact of active vitamin D administration on the clinical outcomes of acne vulgaris.

Acne vulgaris is one of the most common chronic inflammatory skin disorder affecting millions of people worldwide. Vitamin D deficiency has a role in various inflammatory skin diseases as acne. This study aimed to investigate the serum level of 25 hydroxy vitamin D in acne patients and to assess the efficacy and safety of active vitamin D in management of acne. This study was conducted on 100 patients with acne and 100 healthy controls, then the 100 acne patients were randomized to either the study group that received 0.25ug alfacalcidol daily or the placebo group that received oral placebo during the 3 months study period. Serum levels of 25-hydroxy-vitamin D were significantly lower in acne patients than in healthy control and were inversely correlated to the severity of acne. After alfacalcidol administration, the study group showed significant higher level of 25(OH) D levels (p < .05) compared to placebo group. In addition, median serum level of IL6 and TNFα significantly decreased (p < .05) in the study group in comparison to placebo group and as compared to their baseline results. Acne patients are more commonly to have vitamin D deficiency as compared to healthy people and hence, alfacalcidol might have a beneficial role in the acne management with no reported side effects.

Persistent organic pollutants, pre-pregnancy use of combined oral contraceptives, age, and time-to-pregnancy in the SELMA cohort.

BACKGROUND: We are exposed to several chemicals such as persistent organic pollutants (POPs) in our everyday lives. Prior evidence has suggested that POPs may have adverse effects on reproductive function by disrupting hormone synthesis and metabolism. While there is age-related decline of fertility, the use of hormonal combined oral contraceptives (COCs) and its association to return of fertility remains controversial. The goal of this study is to investigate the association between exposure to POPs, both individually and as a mixture, and fecundability measured as time-to-pregnancy (TTP) according to pre-pregnancy use of COCs and age. METHODS: Using the SELMA (Swedish Environmental Longitudinal Mother and Child, Allergy and Asthma) study, we have identified 818 pregnant women aged 18-43 years (mean 29 years) with data on how long they tried to get pregnant and what was their most recently used contraceptive method. These data were collected at enrollment to the study (median week 10 of pregnancy). Concentrations of 22 POPs and cotinine were analyzed in the blood samples collected at the same time as the questions on TTP and pre-pregnancy use of contraceptive. Analyses were done on the association between POPs exposure and TTP measured as continuous (months) and binary (infertile for those with TTP > 12 months). To study the chemicals individually, Cox regression and logistic regression were used to estimate fecundability ratios (FRs) and odds ratios (ORs), respectively. Weighted quantile sum (WQS) regression was used to investigate the chemicals as a mixture where chemicals of concern were identified above the 7.6% threshold of equal weights. To perform the subgroup analysis, we stratified the sample according to use of COCs as the most recent pre-pregnancy contraception method and age (< 29 years, and ≥ 29 years). The models were adjusted for parity, regularity of menses, maternal body mass index (BMI) and smoking status, and stratified as described above. RESULTS: Prior to stratification, none of the POPs were associated with fecundability while increased exposure to HCB, PCB 74 and 118 had higher odds of infertility. Upon stratification, POP exposure was significantly associated with longer TTP in women aged ≥29 years who did not use COC. Specifically, PCBs 156, 180, 183, and 187 were associated with reduced fecundability while PCBs 99, 153, 156, 180, 183, and 187 had higher odds of infertility. As a mixture, we identified the chemicals of concern for a longer TTP include PCBs 118, 156, 183, and 187. Moreover, chemicals of concern identified with increased odds of infertility were PCB 74, 156, 183, 187, and transnonachlor. CONCLUSION: Serum concentrations of selected POPs, both as individual chemicals and as a mixture, were significantly associated with lower fecundability and increased odds of infertility in women aged 29 years and above not using COC as their most recent pre-pregnancy contraceptive. Our findings suggest that pre-pregnancy use of oral contraceptive and age may modify the link between POPs and fecundability. The differences of specific chemicals in the individual analysis and as a mixture support the need to study combination effects of chemicals when evaluating reproductive outcomes.

Efficacy of 577 nm pro-yellow laser in the treatment of melasma: a prospective split-face study.

We aimed to study the effectiveness of 577 nm pro-yellow laser in the treatment of melasma. A total of 82 patients with melasma were included in this comparative study. A detailed medical history, examination, and calculation of Melasma Area and Severity Index were done for all patients. All participants were treated with topical sunscreen and hydroquinone 4% cream on both sides of the face. In addition, the left side of the face was subjected to a single pass of 577-nm pro-yellow laser at a monthly interval for three sessions. Follow up was done by comparing the Melasma area and severity index at 0, 3 and 6 months. At baseline, there is no significant difference in the Melasma area and severity index score between both sides of the face. At 3 months, MASI score was statistically significantly decreased on both sides of the face compared to pretreatment (P < .05). At 6 months, the mean MASI score at the laser-treated side was statistically significantly decreased compared to the non-laser-treated side (P < .05). we concluded that the addition of 577 nm pro-yellow laser in the treatment of melasma leads to maintain the improvement and reduction of the recurrence rate.

Peroxisome proliferator-activated receptor-γ polymorphism (rs1801282) is associated with obesity in Egyptian patients with coronary artery disease and type 2 diabetes mellitus.

OBJECTIVE: Peroxisome Proliferator-Activated Receptor-γ (PPAR-γ) gene is one of the possible genes linking diabetes mellitus (DM) with coronary artery disease (CAD). The aim of this study is to clarify whether PPAR-γ Pro12Ala polymorphism is associated with the development of CAD in type 2 diabetic patients and to evaluate PPAR-γ Pro12Ala polymorphism genetic distribution in type 2 DM (T2DM) Egyptian subjects. METHODS: PPAR-γ Pro12Ala polymorphism was determined by Real-Time PCR in serum of 405 subjects classified into 4 groups; T2DM patients (n = 105), T2DM with CAD (n = 100), CAD patients (n = 100) and healthy controls (n = 100). RESULTS: The PPAR-γ Pro12Ala polymorphism was associated significantly with T2DM with CAD (group2) (OR = 3, 95% CI = (1.5-6); p = 0.001). In this study, T2DM with CAD complications carrying the PPAR-γ Pro12Ala polymorphism had higher BMI than those without the PPAR-γ Pro12Ala polymorphism (p < 0.0001). CAD patients carrying PPAR-γ Pro12Ala polymorphism had considerable insulin resistance features. Plasma paraoxanase 1(PON1) level was considerably reduced among our 3 studied groups in comparison to control group (p < 0.001). CONCLUSIONS: PPAR-γ Pro12Ala polymorphism might represent a novel risk factor for CAD in T2DM.

Endothelial nitric oxide synthase gene (T786C and G894T) polymorphisms in Egyptian patients with type 2 diabetes.

BACKGROUND: Genetic factors play important role in the development of type 2 diabetes and diabetic nephropathy. Endothelial nitric oxide synthase (eNOS) gene is responsible for the bioavailability of nitric oxide and endothelial function. AIM: To assess the association of the endothelial nitric oxide synthase (eNOS) (T786C and G894T) single nucleotide polymorphisms with Egyptian type 2 diabetes mellitus and diabetic nephropathy. PATIENTS AND METHODS: A total of 200 type 2 diabetic patients and 100 apparently healthy volunteers as controls were included in the study. They were subjected to clinical examination and laboratory tests: fasting blood glucose, HBA1C, lipid profile, serum creatinine, blood urea and albumin creatinine ratio (ACR). Assessment of the T786C and G894T polymorphisms in the eNOS gene was done using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). RESULTS: There was no significant difference in distribution of eNOS T-786C polymorphism between patients and controls; TT genotype of eNOS G894T was more frequent in diabetic patients with and without albuminuria compared to controls. Patients were divided into 3 groups according to ACR. Normoalbuminuria: 37 patients with ACR ≤ 30 mg/g, microalbuminuria: 96 patients with ACR > 30 mg/g and ≤ 300 mg/g, and macroalbuminuria: 67 patients with ACR > 300 mg/g. There was no significant difference in genotype distribution of eNOS T-786C between the 3 groups of diabetic patients. The prevalence of TT genotype of eNOS G894T was higher in microalbuminuria patients compared to other groups. CONCLUSION: eNOS G894T variant may increase risk of type 2 diabetes with lack of association between eNOS T786C, eNOS G894T and DN in Egyptians.