Group Of Students Research Articles

AN EXAMINATION OF PERCEPTIONS REGARDING ONLINE STUDENT COMMUNITIES: A METAPHORICAL ANALYSIS FOR LEARNERS AND GRADUATES OF OPEN EDUCATION SYSTEMS

The aim of this study is to determine the metaphorical ideas held by learners/graduates who engage in online student communities within the Anadolu University Open and Distance Education System, specifically with the concept of “online student communities”. The study utilized a qualitative research methodology, specifically employing the phenomenology design, which is a well-established qualitative research strategy. The research sample consists of 637 students/graduates who are associated with student groups of the Anadolu University Open Education System. The acquired data underwent scrutiny through the content analysis method. The study revealed that participants evaluated online communities by taking into account multiple features instead of relying on a single notion. Hence, the metaphors used by individuals in virtual student communities were categorized into seven main groupings. The aforementioned areas include the exchange and generation of information, social connections, hobbies, advantages and life experiences, communication and engagement, technology, and monotony or boredom. After examining the participant responses on metaphors related to online student communities and their motivations, it became clear that the participants had positive views on acquiring information, building social connections, facilitating communication and interaction with other students and alumni, as well as personal enjoyment and benefits.

The Effect of Euphemism as Teaching Expressions on EFL University Students' Performance in Producing Vocabulary

Neglecting vocabulary hampers academic success as students struggle with comprehension, expression, and participation, impacting their university and future achievements. This study aims at Finding out the effect of Euphemism as teaching expressions on students' performance in vocabulary repertoire; Finding out the effect of Euphemism as teaching expressions on students' performance in producing vocabulary.A sample consists of 100 fourth year university students from Tikrit university. A sample has been randomly selected and divided into two equal groups, i.e., experimental and control groups. They have been equalized in age, gender, pretest, parents' academic attainment, and their previous year scores in novel. The two groups have been taught the same instructional material for twelve weeks. An achievement vocabulary posttest has been constructed, validated, its reliability obtained, its items analyzed, and then applied to the two groups of students at the end of the instructional period of the current study. The obtained results are as follows: There is statistically significant difference between the experimental and control groups in vocabulary repertoire and in favor of the experimental group;there is statistically significant difference between experimental and control groups in production of vocabulary and in favor of the latter.

Calculating the focal length of a concave mirror computerically using mathematical algorithms using MATLAB

This study proposes the use of digital image processing technology to determine the focal lengths of simple concave mirror , as well as spherical mirrors. This method is simpler, faster to implement, and more accurate in calculating the focal length by taking several pictures at different distances for the image formed by the lens, then calculating the least point spread function for these pictures at that distance to determine the best image. In this work Image No. (7) represents the image that carries the least (psf) that was determined by algorithms and special mathematical equations through the (Matlab) program, then the focal length is calculated by employing algorithms and mathematical equations specific to calculating the focal length. A comparison was made with the traditional method by taking measurements of a group of students at the Optics laboratory of University of Wasit, College of Science (which depends on view to choose the best image). This method has proven to be superior in measuring the focal length of lenses. A statistical analysis was conducted for these measurements for the group of students and it was found that there was differences measurements with an error rate, which confirms the feasibility of this method in terms of measurement accuracy and time saving. Experimental results have confirmed this.

Совершенствование преподавания инженерно-графических дисциплин

The article is devoted to the study of modern methods of teaching engineering and graphic disciplines with an emphasis on the use of digital technologies such as computer-aided design (CAD) and virtual/augmented reality (VR/AR). In the context of rapidly developing engineering practice, traditional teaching methods, including manual drawing and standard teaching approaches, are becoming less relevant. As part of the research conducted in the 2023-2024 academic year, an experiment was organized in which two groups of students took part: one studied using traditional methods, the other used modern CAD and VR/AR technologies. The experiment showed that the use of these technologies significantly increases the level of material assimilation and motivation of students. CAD systems allow students to accelerate the process of mastering design skills and create more accurate drawings, and virtual reality technologies help to better visualize complex spatial structures, which contributes to a deep understanding of the educational material. The article offers recommendations on the integration of these technologies into the educational process aimed at improving the effectiveness of teaching engineering and graphic disciplines and improving the preparation of students for future professional activities in a rapidly changing technological environment.

Медиатизированный дискурс православного студенчества об РПЦ

The article is devoted to the analysis of the modern Orthodox conservative mediatized discourse among student bloggers on the Telegram messenger platform. The relevance of the study lies in the lack of development of both the topic of mediatization of Orthodoxy and the topic of studying Orthodox conservatism in modern sociology. The study of this phenomenon in the work took place through the prism of a conceptual approach, which received the name "mediatization of religion" in scientific sociological literature. The scientific problem is that studies of the mediatization of Orthodoxy are no longer a new field, but their number is still small. A large number of religious groups that are currently forming and functioning are outside the field of view of researchers. The figurative approach, which took shape in the German school of studying mediatization, was chosen as the research method. The figurative approach re-actualizes the concept of “figuration” by Norbert Elias and considers modern communicative figuration in media through four components: communicative practices, media ensemble, frame of relevance and constellation of actors. The communicative figuration of modern Orthodox conservatism in the Telegram messenger was taken as the basis of our study, since this platform provides opportunities for discussion on social and theological issues. The purpose of the article is to describe this communicative figuration through its four components. In this regard, the objectives of the study were: a description of the context of formation and features of the modern stage of studying the mediatization of Orthodoxy; a characteristic of the 4 components of the communicative figuration of modern Orthodox conservatism among young people. The empirical part of the study was based on a series of expert, semi-structured interviews with the authors of Telegram channels included in the youth category and who are students of higher educational institutions. In total, 30 interviews were collected from March to August 2024, of which 5 were selected for the article. The results of the study demonstrated that at the moment there is a constellation of actors of modern Orthodox conservatism, in the youth pole of which a group of students can be distinguished. Orthodox conservative students build their own identity, based on the Orthodox tradition, but only in the form of moral prescriptions. They are practically not integrated into the existing structures of the Russian Orthodox Church. The frame of relevance of the communicative figuration of Orthodox conservatism considers Orthodoxy as an integral part of modern Russian culture and humanitarian science. But in the frame, there is also an opposition to liberalism, including church liberalism, which occurs on issues of the foundations of society.

Neck Reflex Points: A New Clinical Test? Prevalence in Two Cohorts and Its Covariates.

Background: Neck reflex points (NRPs) are 2 × 6 potentially tender areas of the neck, denominated NRP-C0 to NRP-C7. They are different from muscular trigger points and become tender in response to chronic trigeminal irritation. NRP examination has a high inter-rater reproducibility. We investigated the prevalence of NRPs in two populations to investigate their usefulness as a clinical test for trigeminal irritation. Methods: In total, 165 patients with chronic pain and 431 students were examined for NRP tenderness using a three-level pain scale: absent pain (PI = 0), mild tenderness (PI = 1), or marked tenderness (PI = 2). Results: In patients, we found more tender NRPs than in the student group (p < 0.001), and on the left side, more tender NRPs were found in NRP-C0-C4. Left and right NRPs appeared independently (kappa 0.1-0.4), except for NRP-C7 (kappa 0.55). Females had more tender NRPs (p < 0.001). Tenderness was independent of age, BMI, and pre-existing diseases. Conclusions: NRP tenderness occurs more frequently in patients than in students, independent from potential covariates. Our results, together with previous findings, support the use of NRP examination as a clinical test for chronic silent inflammation of the trigeminal region. These data provide a base for further studies investigating correlations of NRPs with clinical findings.

Internet Addiction: Influencing Academic, Non-academic and Psychological Aspects in Offshore Malaysian Medical Students

Excessive internet usage creates abundant problems like dependency and addictive behaviour. Internet addiction (IA) is becoming a universal public health concern. The isolated group of Malaysian students studying in offshore campuses in India is more susceptible to IA due to language, culture, ethnicity, and food habit differences, leading to a lack of communication with native students. The study aims to determine the prevalence of IA and its influence on academic, non-academic, and psychological aspects in Malaysian medical students. A cross-sectional study was conducted on 170 offshore Malaysian medical students using Young’s Internet Addiction Test (Y-IAT) questionnaire of 20 items. The difference was tested by student’s t-test and the association between IA and other factors by chi-square test with a statistical significance at 5%. The study observed a 46% prevalence of IA in offshore Malaysian medical students. Male students were more prone to IA compared to females. The amount of time spent on entertainment per day was significantly (p = 0.004) associated with IA. The present study revealed that the prevalence of IA was significantly associated with academic performance (χ2 = 33.670, p = 0.001) and psychological disturbances like sleep disturbance due to late-night log-ins (χ2 = 41.013, p = 0.001), felt life would always be joyless (χ2 = 27.272, p = 0.001) and, depressed moody without internet (χ2 = 33.347, p = 0.001). The present study revealed that IA has an adverse impact on students’ academic activities as well as on psychological health. Medical teachers and schools should identify students who are prone to and affected by IA and recommend interventions based on their needs. This study recommends that students utilise their valuable time in offline activities like regular sports, cultural exchange programmes, fun activities, yoga, meditation, and learning new skills and languages. These activities may help students prevent overindulgence with the internet, encourage the overall growth of promising doctors, and build a healthy society.

Implementing Learner Autonomy in English as a Foreign Language Classroom Through a Flipped Classroom Pedagogical Approach

This study is a small-scale action research on the problem of using the Flipped Classroom pedagogical approach to enhance learner autonomy in the target group of high school students in an EFL classroom. The main stages of the research were conducted in the spring semester of the academic year of 2023/24. The participants of the study are seven Ukrainian Grade 9 students and three teachers. The research aims at designing and implementing a method for engaging learners in autonomous practices through the Flipped Classroom model. The methodological basis of this study is the works of (Benson &amp; Voller, 2014), the Flipped Learning Network (2014), (Moore, 2015), (Velegol, Zappe, &amp; Mahoney, 2015), (O’Flaherty &amp; Phillips, 2015), (Hung, 2015), (Huang &amp; Hong, 2016), (Nichols, Burgh, &amp; Kennedy, 2017), (Olakanmi, 2017), (Låg &amp; Sæle, 2019), (Jung, Park, Kim, &amp; Park, 2022), (Little, 2022) and other scientists. In this research, the mixed-method approach is used; the quantitative and qualitative data have been collected through guided observation, surveys (teacher interviews and student questionnaires), and mathematical statistics (descriptive and frequency methods). The essence of the designed method lies in the gradual engagement of students in reviewing short video lectures and reading relevant input before class; then, in class, discussing content and doing quizzes and exercises to reinforce understanding, and, finally, actively participating in creating content-related presentations or projects. The results of this study demonstrate that the Flipped Classroom approach has a considerable impact on learner self-awareness, beliefs, and attitudes implemented in autonomous classroom practices, in particular: effective use of free time for English studying; increased motivation to explore new content and understanding it; perception of a teacher as a facilitator, suggesting a move towards a more student-centered or collaborative learning environment; perception of knowledge as something to be gained rather than “transmitted”, taking on responsibility for evaluating learning outcomes through self-assessment or collaborative evaluation methods. Nevertheless, there are some limitations to using FC in the English language classroom: the willingness of teachers to apply learner-centered methods; the willingness of students to take responsibility for their learning; learners’ cognitive and metacognitive skills; the difficulty of the learning material meant for flipping (self-study), access to resources and technology. The results of this study can be used by researchers and practitioners working in the sectors of secondary and tertiary education.

Using distance learning strategy in students’ acquisition of conceptual and procedural knowledge in mathematics

The study investigates the effect of using Distance learning (DL) on students’ acquisition of conceptual and procedural knowledge in mathematics. The study used the quasi-experimental approach, where the study was applied by two groups of ninth grade students (experimental, 25 students, and control, 26 students), the experimental group was taught by using Distance learning, and the control group was taught in the usual way, after verifying the validity coefficients. And reliability for testing conceptual and procedural knowledge. The results demonstrated statistically significant differences favoring the experimental group, suggesting that Distance learning has a beneficial impact on mathematics instruction. The study included recommendations on the necessity of promoting Distance learning usage among students and teachers additionally the function of educational technology in the process of teaching and learning mathematics.

Трансформация гражданственности студенчества в «переломное время» (на материалах фокус-групп и эссе студентов вузов Ростовской области в 2022 и 2024 гг.)

The article analyzes the opinions and civil positions of students of the Rostov region universities in the context of a Special Military Operation and a destructive ideological war of the collective West against the Russian Federation. Based on the materials of the focus group and essays of the Don students in October – November 2022 (8 groups) and in April 2024 (6 groups, 203 essays), the life-forming factors of student youth are described: life, peace, humanism, family and immediate environment, collectivism and mutual assistance, historical memory, small homeland, patriotism. The events and factors that influenced the moral and social state of the Don students are identified: confrontation with existential problems of war and peace, life and death; uncertainty of the future in the context of the inevitability of a Special Military Operation, cultural isolation of Russia, geopolitical risks and transformation of the world order. In the face of an existential choice, there is a rethinking of the value of family, an increase in the role of the immediate circle and small homeland. A targeted state policy of memory, glorification and memorization of the Special Military Operation participants creates the ground for an increase in the role of historical memory, the values of patriotism and citizenship, trust in the authorities and approval of political decisions. The perception of Western values becomes more critical; the severity of anxiety about the cultural, economic, political isolation of Russia is erased. The hypothesis about the existence of two models of citizenship of Russian students was confirmed: a) the first (civic consciousness as public-state patriotism) is associated with factors of sociocentrism, where there is an identity with one's family, ethnic group, small homeland, and civic identity with the Russian state is strengthened, associated with a sense of duty, responsibility and obligation to it; b) the second (global citizenship) is based on the principles of anthropocentrism with guarantees of observance of constitutional rights and freedoms, humanistic values and global citizenship, but without the individual's obligations to the state.

Predicting the Tendency to Re-Experience Abusive Relationships Based on Schema Modes and Self-Compassion: A Web-Based Cross-Sectional Study

Finding an intimate partner is an important step in adulthood that has a special effect on self-concept and mental health. The tendency to re-experience abusive relationships (TREAR) refers to a person’s inclination to repeatedly find themselves in abusive or unhealthy relationships. There are many factors for the TREAR. This study aimed to predict TREAR based on schema modes and self-compassion. The present study design was predictive correlational, with the statistical population consisting of adults over 18 who have experienced emotional relationships in Rasht, Iran. Finally, 190 participants entered the study. Due to COVID-19 quarantine circumstances, we used an internet-based convenience sampling method through the social media groups of students at Rasht’s universities. Participants completed the tendency to re-experience abusive relationships scale, schema modes, and self-compassion. Most of the participants were between age 23 and 32 years (44.2%) and female (81.6%). According to the findings, self-compassion was greatly associated with a lower TREAR. In contrast, the schema modes were significantly associated with a higher score of the TREAR (p&lt; .05). The coefficient of determination (R2) was equal to 0.506, indicating that 50.6% of the change in re-experiencing abusive relationships was explained by demographic characteristics, schema modes, and self-compassion. The results showed that both schema modes and self-compassion were predictors of continuing the abusive relationship cycle. These findings could have important implications for future research, especially on the prevention and treatment of individuals involved in abusive relationships.

Pengaruh Olahraga Permainan Tradisional Congklak Terhadap Perkembangan Psikomotorik dan Kognitif Siswa Sekolah Dasar

Traditional sports and games, such as congklak, have been an inseparable part of culture and people's lives since ancient times. This research aims to reveal the influence of the congklak game on psychomotor and cognitive development in elementary school students. By comparing groups of students who regularly play congklak and those who don't, this research wants to find out whether this traditional game can improve students' fine motor skills, hand-eye coordination, counting ability, and problem-solving ability. It is hoped that the results of this research can contribute to cultural preservation and improving the quality of education by integrating traditional games as an effective learning medium.

How generalizable is the relationship between feedback and reading literacy across different competence levels, multilingual learners, and countries? A meta-analytic approach

Contrary to theoretical assumptions, only weak relationships have emerged between feedback and reading literacy in non-experimental settings. Our study contributes to a better understanding of those weak relationships by shedding light on generalizability across specific student groups (different competence levels, multilingual learners) and contexts (countries). Using a meta-analytic approach, we analyzed the PISA 2018 dataset with data from 505,906 students from 75 countries. Our results indicate a weak overall relationship between feedback and reading literacy, an uneven distribution of feedback across competence levels, and heterogeneity across countries. In contrast, multilingual learners do not profit differently from feedback compared to their monolingual peers. Future research should focus on the mechanisms behind these differences.

Predictive Model for Identification and Analysis of Factors Impacting Students Academic Performance Using Machine Learning Algorithms

Background: Education is a vital component of both societal and individual growth. To create effective learning environments, it is essential to understand the factors that influence student achievement. However, the application of machine learning algorithms can drive positive change, providing higher education institutions with effective solutions to their challenges. Aim: This research develops a predictive model to identify and analyze the factors affecting student academic performance, aiming to provide institutional administrators and lecturers with a better understanding of the key factors impacting student success. Method: A comprehensive dataset was collected from undergraduate students at Modibbo Adama University (MAU), Yola, comprising student-related, home-related, lecturer-related, and institution-related factors. Model development was carried out using Python in Google Colab, a cloud-based Jupyter notebook environment. Classification algorithms such as K-Nearest Neighbors (KNN), Decision Tree (DT), Gradient Boosting Method (GBM), and Random Forest (RF) were applied to predict student academic performance. Four evaluation metrics namely; accuracy, precision, recall, and f1-score were used to analyze the models. Results: The Random Forest model outperformed the other machine learning models, achieving an overall accuracy of 95%. For predicting low-performing students, the model achieved a precision of 0.9677, recall of 0.9474, and f1-score of 0.9574. For high-performing students, the precision was 0.9324, recall was 0.9583, and f1-score was 0.9452. These strong performance metrics across both low and high performing student groups demonstrate the effectiveness of the Random Forest model in accurately predicting student academic performance based on the factors considered in the study. Feature importance analysis identified lecture attendance, sponsor support, quality of facilities, and lecturer clarification as the most influential factors on student performance. Other features, such as accommodation, employment status, and program preference, were found to have a low impact. These findings emphasize the importance of considering a comprehensive set of student, lecturer, institution, and home-related factors to sustain a conducive learning environment and enhance educational practices.

Considerations for Research Focused on Minoritized Students in School Psychology

There continues to be a call for research focused on better understanding and supporting the needs of students with minoritized identities. A review of school psychology research reveals that while the field has made strides, there still is an underrepresentation of research in this area. The trend toward centering diversity in research demonstrate efforts within the field to include more representation of minoritized groups despite the lack of diversity plaguing the profession. It is, therefore, vital for researchers to determine whether their practices cause undue harm to students in ways that fail to understand their strengths, muting their voices, and de-centering their experiences. As such, researchers must intentionally and iteratively examine their research aims and methodology to more equitably incorporate diverse student groups in their studies. In this paper, we discuss the significance of how minoritized groups are included (e.g., aggregated) and methodological considerations for advancing singular research methods. We propose the integration of mixed methods research to mitigate the shortcomings of a single method and obtain a more holistic view of students. Together, this is a call of action for researchers to intentionally and more consistently include minoritized students in research in ways that authentically affirm their identities.

A Machine Learning Approach to Optimal Group Formation Based on Previous Academic Performance

In today’s educational institutions, student performance can vary widely due to differences in cognition, motivation, and environmental factors. These variations create challenges in achieving optimal learning outcomes. To address these challenges, Optimal Group Formation (OGF) has emerged as a promising research area. Optimal Group Formation (OGF) aims to form student groups that maximize learning efficiency based on past academic performance. Group formation problems are inherently complex and time-consuming, but their applications are extensive, spanning from manufacturing systems to educational contexts. This paper introduces a machine learning-based model designed to create optimal student groups using academic records as the primary input. The goal is to enhance overall group performance and reduce error rates by organizing students into cohesive, efficient teams. What sets this research apart is its focus on educational group formation, leveraging machine learning to improve collaborative learning outcomes. The paper also reviews prior research, emphasizing the importance of Optimal Group Formation (OGF) in various fields and its relevance in education. The model’s effectiveness is demonstrated through comparative analysis, showcasing its potential to improve group dynamics in both theoretical and lab-based courses. Ultimately, the aim is to improve educational outcomes by ensuring that student groups are optimally balanced and structured.

Online collaborative PBL – The Bridge21 approach

Collaborative project-based learning is one pedagogical approach which has the potential to play a meaningful role in synchronous online teaching but its use at second level, or high school, is under-explored. This paper describes the use, in an online setting, of the Bridge21 pedagogical model for collaborative project-based learning with secondary school students. It compares the experiences of a group (N = 119) of students (aged 15–16) who, in an Emergency Remote Teaching offered during Covid, experienced the model in an online, synchronous modality with that of a group (N = 253) who participated face-to-face in the following year.Two related research questions are addressed. (RQ1) Are the Bridge to College collaborative project-based learning workshops as effective, in terms of enhancing secondary school student confidence in Transversal Skills, when delivered in a synchronous online modality as they were when delivered face-to-face? (RQ2) If so, then what are the elements of the workshops which contribute to their effectiveness?Data on improvement in student confidence in Transversal Skills show that the online experience was on a par with face-to-face offerings. Student feedback suggests that the focus on collaborative work, and the structured approach to PBL, were key factors in the success of the model in the online setting. The modifications needed to adapt the model for use online were minimal. Thus, the contribution of the paper is to provide a model for synchronous online learning, for secondary schools, which preserves the benefits arising from face-to-face collaborative PBL.

Application of Printed Teaching Materials in Digital Form

The study focuses on the identification of criteria, limits for the transformation and usability of printed teaching texts and materials in their digital form in the educational process. Based on the identified criteria, the goal is to upgrade the form of printed teaching texts, in accordance with the needs of education in the 21st century, into a digital form. In order to increase the level of competence of teacher students in the field of handling ICT, for their future practice, it is important to appeal to the necessity of integrating ICT into teaching. The output of the study is a concrete demonstration of the transformation of print content into digital form and the presentation of data of a group of students educated in the field of handling digital means and platforms, during their undergraduate training, in a specific subject.

Benefits of using virtual reality in cariology teaching

BackgroundVirtual Reality (VR) has been widely used as an useful educational tool in modern dentistry and is considered as an alternative training tool adjunct to conventional training methods.ObjectiveThis study was designed to investigate the effectiveness of VR haptic-enhanced simulators for training undergraduate dental students during practical cariology pre-clinical caries excavation sessions.MethodsA total number of 76 students were recruited for this study. Students were randomly divided into 2 groups (38 students each). The experimental group (VR-Start group), students performed caries removal at the VR haptic-enhanced simulator prior to practicing on natural extracted teeth. Conversely, the control group (Natural Tooth-Start Group), students exposed to VR simulation training after practicing on extracted natural teeth. An evaluation questionnaire was disseminated among students to evaluate their self-confidence, perceived clinical skills and their perception of providing better care to patients in the future. They were also invited to express their opinions on the usefulness of VR simulator in comparison with conventional learning methods.ResultsThe outcome of Chi-square test showed no significant difference in students’ response among this study groups (p > 0.05). Moreover, the outcome of this study revealed that both student groups considered virtual reality as a useful learning tool. Majority of students (90%) superiorly ranked experience gained from practicing on natural carious teeth. They also clearly stated that virtual reality allowed them to practice more and improve their self-confidence level as well as eye-hand coordination.ConclusionsVirtual reality simulator is a useful learning tool which can benefit undergraduate dental students at their pre-clinical stage; but, it cannot totally replace the conventional caries excavation.

Distortion Assessment of Different Materials in Full-Arch Dentate Impressions in Relation to Operator Experience: A Comparative In Vivo Study.

To evaluate the distortion probability in impressions of completely dentate arches when different impression materials are used in relation to operator experience. A total of 28 students (Group A) and 7 dentists (Group B) performed three maxillary impressions on 28 participants, each using vinyl siloxane ether (VSE), polyether (PE), and irreversible hydrocolloid (IHC). Gypsum master casts were fabricated and subsequently digitized. Intraoral scans were taken as a control. Differences between master casts and intraoral scans were visualized with heatmaps, and planar deviations were investigated. If planar deviations > 120 μm were found, the impression was rated as 'distorted.' An additional superimposition using the casts from VSE or PE was performed to confirm the presence of distortions. The relative number of surfaces with distortions in each impression was calculated. The procedure was repeated for a distortion threshold of 500 μm. The statistical analyses included repeated measures ANOVA (RMA) and post hoc tests (α < .05). When 120 μm was considered as the threshold for distortions, IHC impressions showed higher distortion probability than PE impressions in Group A (P &#61; .003) and Group B (P < .0001). In Group B, PE showed a lower distortion probability than VSE (P &#61; .02). There was no significant difference between the study groups (P &#61; .42). Considering 500 μm as a threshold for distortions, there was no difference between impression materials (P &#61; .17) or study groups (P &#61; .53). There were no statistically significant differences in relation to operator experience. Different impression materials had a significant impact on distortion probability. PE impressions showed the lowest distortion probability.