Comparison of chiropractic student scores before and after utilizing active learning techniques in a classroom setting

Objectives:The aim of this study was to investigate the role of deep cryogenic treatment (DCT) on the cyclic fatigue resistance and cutting efficiency of martensitic shape memory (SM) nickel–titanium (NiTi) rotary endodontic instruments.Materials and Methods:Seventy-five HyFlex® CM instruments were randomly divided into three groups of 25 each and subjected to different DCT (–185° C) conditions based on soaking time: DCT 24 group: 24 h, DCT 6 group: 6 h, and control group. Each group was randomly subdivided for evaluation of cyclic fatigue resistance in custom-made artificial canals (n = 15) and cutting efficiency in plexiglass simulators (n = 10). The cyclic fatigue resistance was measured by calculating the number of cycles to failure (NCF) and cutting efficiency was measured using the loss of weight method.Results:Increase in NCF of instruments in DCT 24 group was highly significant (P < 0.01; Tukey's honest significant difference). There was no difference in weight loss of plexiglass simulators in all the groups (P > 0.05; one-way analysis of variance). In conclusion, deep dry cryogenic treatment with 24 h soaking time significantly increases the cyclic fatigue resistance without affecting the cutting efficiency of SM NiTi endodontic instruments.Materials and Methods:Seventy-five HyFlex® CM instruments were randomly divided into three groups of 25 each and subjected to different DCT (–185° C) conditions based on soaking time: DCT 24 group: 24 h, DCT 6 group: 6 h, and control group. Each group was randomly subdivided for evaluation of cyclic fatigue resistance in custom-made artificial canals (n = 15) and cutting efficiency in plexiglass simulators (n = 10). The cyclic fatigue resistance was measured by calculating the number of cycles to failure (NCF) and cutting efficiency was measured using the loss of weight method.Results:Increase in NCF of instruments in DCT 24 group was highly significant (P < 0.01; Tukey's honest significant difference). There was no difference in weight loss of plexiglass simulators in all the groups (P > 0.05; one-way analysis of variance). In conclusion, deep dry cryogenic treatment with 24 h soaking time significantly increases the cyclic fatigue resistance without affecting the cutting efficiency of SM NiTi endodontic instruments.

Examining a huge amount of data is a typical issue in any research process. However, different statistical processes and techniques play essential role to derive a meaningful conclusion from the presented enormous data. Control of type I error is highly essential for a researcher or statistician while dealing with comparisons test with more than two variables. Multiple testing statistical tests provides a structural system and minimizes the error rate by helping to derive meaningful accurate conclusions. Among the different multiple test procedures Tukey's honestly significant difference test (Tukey's HSD) is most common and popular techniques. The main objective of this study was to explore how significantly selection of confidence level or error rate can affect the rate of committing type I error while drawing conclusion. The effect of committing type I error with selection of confidence level or error rate was explored with citing suitable case study in a special education setting. The case study focuses cognitive effect of music on growth and enhancement of the motor behavior (running, jumping and sliding) of children with mild intellectual disability enrolled in the special school setting. ANOVA test was performed and the significance of selection of individual confidence level and simultaneous confidence level) in Tukey’s HSD test was described.

Introduction: The objectives of endodontic therapy are to eliminate bacteria in the root canal system and obturate the prepared canal system in three dimensions. The objective of this study was to compare obturation units for (a) the rate of heating and (b) peak temperature reached. Methods: Seven configurations were examined: B&amp;L-Alpha II Down-pack; B&amp;L-Beta Mini Backfill; Elements-IC Down-pack and Backfill; and Woodpecker Fi-P Down-pack, Fi-G Backfill, and Fi-E Backfill. The experimental system was comprised of a thermocouple (Omega, 5TC-TT-K-40-36), MCP9600 thermocouple EMF converter (SparkFun, SEN-16295), and an ESP32 microcontroller to capture the data (SparkFun, DEV-22924). A python notebook was used to process the saved data and perform statistical analysis using the SciPy statistical method libraries. One-way ANOVA and Tukey HSD(Honestly Significant Difference) were used to test for statistical differences. Results: One-way ANOVA on the down-pack and backfill units' data showed significant differences. According to the Tukey HSD findings, there were no significant differences in the Woodpecker Backfill products for both max temperature and rate of heating. The max temperature showed strong similarity (p=0.969), while the rate of heating showed a weaker significance (p=0.073) but was still above threshold. All other backfill units performed statistically differently. The down-pack units all performed statistically different in both max temperature and rate of heating, except for the Elements IC and Woodpecker Fi-P units with respect to the rate of heating (p&gt;0.05). Conclusions: Statistically different performance among the seven obturation groups was observed when investigating rise to temperature time and setpoint temperature. All materials were LSUHSC-owned equipment, donated, or purchased with internal funds.

The lay public frequently access and rely on online information as a source of their medical knowledge. Many medical societies are unaware of national patient education material guidelines and subsequently fail to meet them. The goal of the present study was to evaluate the readability of patient education materials within the medical field of gastroenterology. Two hundred fourteen articles pertaining to patient education materials were evaluated with ten well-established readability scales. The articles were available on the websites for the American College of Gastroenterology (ACG), the American Gastroenterological Association (AGA), the American Society of Gastrointestinal Endoscopy (ASGE), the British Society of Gastroenterology (BSG), and the NIH section National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). One-way analysis of variance (ANOVA) and Tukey's honest significant difference (HSD) post hoc analysis were conducted to determine any differences in level of readability between websites. The 214 articles were written at an 11.8±2.1 grade level with a range of 8.0 to 16.0 grade level. A one-way ANOVA and Tukey's HSD post hoc analysis determined the ACG was written at a significantly (p<0.05) more difficult level when compared to the AGA, the BSG, and the NIDDK websites. No differences were noted when comparing the ASGE website. None of the patient education materials were written at a level that met national guidelines. If the materials are redrafted, the general American public will likely have a greater understanding of the gastroenterology content.

We read with interest the article by Lyu et al. [1], who conducted a search of the U.S. Vital Statistics Natality Files and found no significant evidence of a link between the coronavirus disease 2019 (COVID-19) pandemic and low birth weight and preterm births in the U.S. [1]. To gain further insight into the course of births during the COVID-19 pandemic, we conducted an electronic search of the Centers for Disease Control and Prevention (CDC) National Vital Statistics System to obtain data on infant deaths recorded from 2018 through 2023 [2]. Specifically, the database provides counts and death rates of infants less than 1 year of age occurring in the U.S., for all residents. The information from the death certificates is directly linked to the corresponding birth certificates. Results were downloaded as infant death rate ×1000 births. The mean mortality rate was calculated for the first 2 years of the COVID-19 pandemic (2020–2021) and compared to that of the two pre-pandemic (i.e., 2018–2019) and the two “endemic” (i.e., 2022–2023) years. Statistical differences were calculated using one-way analysis of variance (ANOVA) and Tukey HSD (Honestly Significant Difference) post hoc test based on the total number of deaths, the mean death rate and its standard deviation (SD), with Statistics Kingdom. The information used for this analysis was taken from an anonymized and publicly available dataset, so that this study did not require ethics committee approval. The mean infant death rate ×1000 in the 2 years before the pandemic was 5.63 ± 0.4, decreased to 5.43 ± 0.01 in the first two pandemic years, and increased again to 5.61 ± 0.1 in the endemic period (Figure 1). The difference between the pre-pandemic years was statistically significant compared to the pandemic years (p = 0.029), resulting in a cumulative reduction in the infant mortality rate of −0.195 (95% confidence interval (CI), −0.037 to −0.353; p < 0.001; −3.5%), but not with the two endemic years 2022–2023 (p = 0.863) (Figure 1). The results of our analysis suggest that the COVID-19 pandemic is unlikely to have had a significant negative impact on the U.S. infant death rate, as infant mortality may have even declined by approximately 3.5% during the first 2 years of the pandemic. This finding is plausibly explained by several pandemic-related public health measures, such as social distancing, mask-wearing and lockdowns, which likely reduced the transmission of common respiratory infections that disproportionately affect infants, including influenza and respiratory syncytial virus (RSV). Additionally, increased parental supervision during this period may have contributed to improved infant care and safety [3]. The authors declare no conflicts of interest. The data that support the findings of this study are openly available in the National Center for Health Statistics at http://wonder.cdc.gov/lbd-current-expanded.html.

In recent decades, educators have pushed to implementing active learning techniques that can advance students' competences. Universities are increasingly required to develop knowledge measured in terms of grades (hard skills) and inter-personal, social, and communication abilities (soft skills). Nevertheless, within the field of active learning, educators often focus on how these techniques can improve students' hard skills and their satisfaction. Few have analysed whether and how these techniques might improve students' soft skills. Moreover, among these few studies, the majority has analysed hard and soft skills separately, measuring whether different active learning techniques may or may not improve them. Virtually no one has studied whether students' hard and soft skills can converge or diverge in an active learning format. This study allows us to understand the relations between these two sets of variables, for example, whether an improvement (or deterioration) in the hard skills corresponds to an improvement (or deterioration) in the soft skills, and vice versa. In our experiment, we analyse the impact of a specific active learning format, such as the Flipped Classroom (FC), on both students' hard and soft skills, by comparing it with a traditional class integrated with other active learning techniques, such as presentations, debates, and teamwork activities. First, we use Pearson correlations to measure the relation between students' hard skills, understood in terms of grades, and a set of soft skills, such as critical thinking, self-efficacy, teamwork, and perception of learning. Second, we use canonical correlations to analyse whether hard and soft skills converge or diverge in an FC format, in comparison with a traditional teaching format integrated with the other active learning techniques. Our main finding is that the FC per se neither improves nor worsens students' performance in terms of hard and soft skills.

To evaluate the relationship between calciferol (vitamin D), cobalamin (vitamin-B12), and Stromelysin-1 (MMP-3) circulating levels in patients with diabetic peripheral neuropathy (DPN), patients with DM type 2 (T2DM) without neuropathy, and healthy control groups. Cross-sectional descriptive study. Department of Internal Medicine, Namik Kemal University of Medicine, Tekirdag, Turkey, between November 2020 and February 2022. Healthy, age, and gender matched volunteers who were admitted to the hospital for a check-up with no health problem constituted the control group (n=30). Cases diagnosed with T2DM (n=30) and those with DPN (n=30) comprised the experimental group. Stromelysin-1, calciferol, and cobalamin levels were analysed from blood samples from all groups using enzyme-linked immunosorbent assay (ELISA) with a commercial kit. Tukey's Honest Significant Difference (HSD) test was performed after one-way analysis of variance (ANOVA) for intergroup comparisons. Alpha significance level was accepted as.

This study aimed to determine the alienation levels and attitudes of physical education teacher candidates towards the teaching profession and identify the relationship between their alienation levels and their attitudes towards teaching. The relational research model was used in the study. The study group consisted of 695 teacher candidates (Mage = 21.53, SD = 2.284) of which 276 (40%) were female and 419 (60%) were male, all of whom were studying in physical education and sports teaching departments. In the data analysis, a t-test for independent groups was conducted to determine whether the alienation levels and the attitudes towards the teaching profession varied according to the variables of gender, while a one-way analysis of variance was performed to determine whether there was any differentiation according to the variables of grade, and a Tukey honest significant difference (HSD) test was undertaken to determine the source of the intergroup difference. Regression analysis was used to determine the level of the relationship between the levels of alienation and the attitudes towards the teaching profession. The study revealed that alienation levels and attitudes of physical education teacher candidates towards the teaching profession were moderate. Additionally, it was found that alienation levels were important predictors of the attitude levels towards the teaching profession.

Bulk-fill composite resins may have comparable mechanical properties to conventional composite resin. Preheating does not reduce the mechanical properties of composite resins.

Evaluation of add-on methods for bis-acryl composite resin interim restorations

Researchers are looking into new ways to fight bacteria because antibiotics are becoming less effective. This has sparked interest in phytochemical agents and metal oxide nanomaterials as substitutes for antimicrobial strategies. This study examined the individual and combined antibacterial effect of extracts of red garlic (RG) and white garlic (WG) (Allium sativum) with zinc oxide (ZnO) and titanium dioxide (TiO?) nanoparticles against bacteria isolated from university hostel wastewater. Wastewater samples were collected aseptically from two female hostels at Ajayi Crowther University, Oyo, Nigeria. Bacterial isolates were characterised by morphological and biochemical methods, and antibiotic susceptibility was profiled by Kirby-Bauer disc diffusion method following Clinical and Laboratory Standards Institute (CLSI, 2022) guidelines. We assessed the antibacterial activity using the agar well diffusion and disc methods. Data analysis was carried out by one-way ANOVA followed by the Tukey honest significant difference (HSD) test (p &lt; 0.05). A total of eight isolates were identified, namely Bacillus cereus (50%), Escherichia coli (25%), Pseudomonas aeruginosa (12.5%), and Staphylococcus aureus (12.5%). Ethanol extracts produced larger zones of inhibition (Zoo) than aqueous extracts across all treatment combinations (p &lt; 0.001). Combinations containing ZnO led to zones of inhibition (ZoI) up to 24 mm, while similar combinations with TiO? reached 22 mm. The combination of RG and TiO? in aqueous solution had the maximum ZoI on Pseudomonas aeruginosa (22 mm). Escherichia coli was the organism more resistant to individual and aqueous garlic preparations. At least one combination of ethanol agar wells achieved CSI ‘Susceptible’ threshold of 13 mm for all isolates. The synergy of Garlic-ZnO exhibits significant antibacterial activity against pathogens from wastewater, which advocates further studies on minimum inhibitory concentrations, biofilm disruption, and in-vivo safety.

Effect of chemical surface treatment of titanium on its bond with dental ceramics

High percentage of biomechanical complications such as screw loosening in dental implants can be related to implant-abutment (I/A) connection properties which affect the behavior of implant assembly against functional loads in the oral cavity. The aims of the present study were to compare the reverse torque values (RTVs) and failure loads of three abutment types with internal Morse taper connection. In this experimental in vitro study, eighteen implants (4.5 mm × 10 mm bone level implants, Implantium, Dentium Co, Seoul, South Korea) were divided into three groups with different abutments: two-piece (TP) abutment, one-piece (OP) abutment, and screw abutment (SA), mounted in stainless-steel blocks according to ISO 14801. After completion the torque/detorque protocol, a compressive load (1 mm/min) was applied at 30° off-axis until failure. Mean reverse torque/tightening torque (RT/TT) values and failure loads were analyzed with one-way ANOVA test and Tukey's honest significant difference (α = 0.05). Failure modes were evaluated by radiography and stereomicroscopy. RT/TT values in the TP group were lower than those in other groups (P < 0.001). Highest failure loads were observed in SA group (P = 0.002). In radiographic evaluation, all specimens showed deformation in I/A interface. I/A connections with larger surface areas may lead to higher RTVs (e.g., OP and SA groups). Use of an additional screw and indexed area in TP group did not reduce the bending resistance under static loading.

Population differences in the postcrania of modern South Africans and the implications for ancestry estimation

Penelitian ini bertujuan untuk mengetahui pertumbuhan bibit dua varietas nanas (Ananas comosus (L) Merr) varietas Gold Barrel dan N67-10 dengan teknik stek batang di Pusat Pembibitan Yagaji, Prefektur Okinawa. Percobaan dilaksanakan pada April-Desember 2022 di Pusat Pembibitan Yagaji, Okinawa. Percobaan yang dilakukan berupa perbanyakan bibit menggunakan teknik stek batang dua varietas nanas (Ananas comosus (L) Merr), yaitu varietas Gold Barrel dan N67-10 sebagai perlakuan. Setiap perlakuan diulang sebanyak 10 kali, sehingga terdapat 20 unit percobaan. Setiap unit diamati berdasarkan parameter yang ditetapkan per bulan selama 9 bulan. Data yang diperoleh dianalisis menggunakan analisis keragaman pada taraf nyata 5% dengan Tukey’s HSD (Honestly Significant Difference) menggunakan Microsoft excel. Hasil penerapan teknik pembibitan stek batang pada tanaman nanas (Ananas comosus (L) Merr) di Pusat Pembibitan Yagaji, Prefektur Okinawa memberikan pengaruh nyata terhadap laju pertumbuhan tinggi tanaman dan diameter kanopi bibit tanaman nanas varietas Gold Barrel dan N67-10. Laju pertumbuhan tinggi tanaman varietas N67-10 mencapai 3,37 cm/bulan, sedangkan varietas Gold Barrel mencapai 2,86 cm/bulan. Laju pertumbuhan diameter kanopi varietas N67-10 mencapai 3,97 cm/bulan, sedangkan varietas Gold Barrel mencapai 4,73 cm/bulan. Varietas N67-10 umur 9 bulan memiliki rata-rata tinggi tanaman 30,4 cm, jumlah daun 17 helai dan diameter kanopi 35,8 cm. sedangkan pada varietas Gold Barrel umur 9 bulan memiliki rata-rata tinggi tanaman 25,8 cm, jumlah daun 16 helai dan diameter kanopi 42,6 cm.