Adolescents

Background: Temporomandibular disorders (TMDs) are the most common source of non-dental orofacial pain, with peak prevalence during adolescence and young adulthood—the same age group when orthodontic treatment is typically initiated. Although orthodontics is not a proven cause of TMD, pre-existing dysfunction may be aggravated during treatment, creating clinical and medico-legal risks. Objective: This paper proposes a structured diagnostic questionnaire and scoring framework for pre-orthodontic TMD assessment. The protocol aims to enhance the early recognition of high-risk patients, facilitate interdisciplinary communication, and lay a foundation for systematic validation. Methods: The framework was developed through synthesis of international diagnostic criteria (DC/TMD), a targeted narrative review of the literature, and expert clinical input. Diagnostic categories were selected based on prevalence, impact on orthodontic outcomes, and medico-legal significance. Weighted scoring stratifies patients into three pathways: (1) proceed with orthodontics without concern, (2) proceed with monitoring, or (3) defer orthodontics until TMD is managed. Results: The proposed questionnaire is designed to address inconsistencies in literature by applying standardized diagnostic items and objective thresholds (e.g., jaw opening < 38 mm), and structured follow-up intervals. Case scenarios illustrate how risk stratification guides decision-making. The questionnaire includes intra-articular and pain-related TMD entities such as disk displacement, degenerative joint disease, myalgia, myofascial pain, arthralgia, headache, and trismus. The framework provides orthodontists with defensible baseline documentation while supporting safe and individualized patient care. Conclusions: Inconsistent diagnostic frameworks, malocclusion classifications, and outcome measures have fragmented the evidence base in orthodontics and TMD. The framework aims to provide orthodontists with structured baseline documentation that may support clinical decision-making and medico-legal risk management. Validation studies are required to establish psychometric reliability and international applicability.

Background: Sedentary behavior is prevalent among female college students and may negatively affect motor competence—a key component of physical literacy and lifelong health. However, limited research has compared motor proficiency across distinct physical activity patterns in this population. This study aimed to examine differences in motor proficiency between sedentary and regularly active female college students. Methods: A cross-sectional study was conducted with 292 female undergraduates (aged 18–21 years). Participants were retrospectively classified into a sedentary behavior group (SBG; n = 124) and a regular exercise group (REG; n = 168) according to the International Physical Activity Questionnaire–Short Form (IPAQ-SF). Motor proficiency was evaluated using the Bruininks–Oseretsky Test of Motor Proficiency, Second Edition (BOT-2). Group differences were analyzed using multivariate analysis of variance (MANOVA) and independent-samples t-tests. Results: The REG demonstrated significantly higher scores in manual coordination, body coordination, and strength and agility (all p < 0.01), whereas no significant difference was observed in fine motor control. The REG also exhibited a higher total BOT-2 score (p < 0.01; Cohen’s d = 0.56). Conclusions: Regular physical activity was associated with higher motor proficiency among female college students. As this study used a cross-sectional design, causal relationships cannot be inferred. Nonetheless, these findings highlight the potential importance of promoting active lifestyles in higher education to enhance motor competence and contribute to long-term public health.

Background: Adolescents’ engagement with social media and emerging metaverse platforms has become nearly universal, creating environments rich in opportunities for learning, creativity, and social connection. However, these same spaces also enable a range of risky behaviors (RBs) with potential impacts on mental health, safety, and development. Recent research (2022–2025) has documented rising concerns over cyberbullying, online sexual exploitation, self-harm content, problematic use, and new risks specific to immersive VR. Aims: This Perspective uses a narrative synthesis of recent empirical and theoretical literature, including four key articles provided by the author and over 40 additional peer-reviewed and institutional sources, to (i) map the most prevalent and emergent RBs in adolescent social media and metaverse use, (ii) clarify the neurodevelopmental and socio-technical mechanisms that link these behaviors to individual and contextual factors, and (iii) propose a multi-level framework for intervention, policy, and future research aligned with adolescent development. Methods: A narrative synthesis approach was adopted, which is appropriate for integrating heterogeneous study designs and rapidly evolving evidence. The review emphasizes studies published from 2022 to 2025, with a focus on large-scale surveys, longitudinal cohorts, systematic reviews, and scoping reviews relevant to adolescent online risk. Results: Evidence indicates small but consistent associations between high-intensity platform use and internalizing symptoms, with gendered pathways and cultural moderators. Algorithmic amplification contributes to the spread of harmful content, while immersive environments increase the salience and emotional impact of interactions. Certain groups—those with prior trauma, low SES, or marginalized identities—face heightened vulnerability. Conclusions: RBs in digital spaces emerge from the interplay of adolescent neurodevelopment, platform affordances, and socio-cultural context. This Perspective synthesizes recent evidence via narrative review to articulate these mechanisms and to inform an integrated, multi-level framework for harm mitigation that aligns research, platform design, and policy with adolescent developmental needs, while preserving the benefits of digital engagement.