Tag: nevin manimala

Int J Prosthodont. 2026 Jun 3;0(0):1-19. doi: 10.11607/ijp.9838. Online ahead of print.

ABSTRACT

PURPOSE: To explore private practitioners’ perspectives on participation in clinical dental research, identify perceived research priorities, and assess current and anticipated future use of research information sources in reconstructive dentistry.

MATERIALS AND METHODS: This cross-sectional survey included dentists practicing in Switzerland in private practice or academic settings. An anonymous online questionnaire with 13 structured items was distributed between June and November 2024 via professional meetings and alumni networks. Survey domains included demographics, current research involvement, interest in future research participation, research priorities, and use of research information sources. Descriptive statistics were calculated. Paired comparisons between current and anticipated future research information sources were analyzed using McNemar’s exact test, with p-values adjusted for multiple testing using the Benjamini-Hochberg false discovery rate procedure. Ranking data were summarized using mean ranks. Analyses were exploratory and hypothesis-generating.

RESULTS: Fifty-six dentists completed the survey (median years since graduation: 18 [Q1-Q3: 7-23]). One-third of respondents (33.9%) reported current involvement in research, while 46.4% expressed interest in future participation, particularly in clinical trials. Anticipated future use of colleagues, study clubs/alumni networks, PubMed, and continuing education as research information sources decreased significantly compared with current use (all adjusted p≤0.032), whereas reliance on journals and social media remained stable. Ranking analyses indicated that predictability was the highest priority in therapy-related decision-making, a trusting patient-clinician relationship was most important in everyday practice, and patient satisfaction was the primary determinant of treatment success.

CONCLUSIONS: Private practitioners showed moderate interest in clinical research participation and emphasized clinically relevant, practice-oriented research priorities. Integrating practitioners’ perspectives may help align prosthodontic research more closely with real-world clinical needs.

PMID:42234485 | DOI:10.11607/ijp.9838

Int J Prosthodont. 2026 Jun 3;0(0):1-16. doi: 10.11607/ijp.9798. Online ahead of print.

ABSTRACT

OBJECTIVES: To evaluate the influence of build platform location on the mechanical and optical properties of a PolyJet-printed temporary dental resin material.

MATERIALS AND METHODS: Disc-shaped specimens (10 mm diameter, 2 mm thickness) were additively manufactured from a temporary PolyJet resin on a circular build platform at four radial positions (n = 10 per position). Biaxial flexural strength (BFS) was determined using an ISO piston-on-three-ball test. Colour coordinates (L*, a*, b*), colour difference (ΔEpos, ΔErel) and mean transparency (MT) were obtained from reflection and total transmission spectra. Surface gloss was measured at 60°. Data were analysed using Levene tests, analysis of variance (ANOVA) with post-hoc comparisons, and Pearson correlation (α = 0.05).

RESULTS: Mean BFS differed by about 20% across positions, ranging from approximately 215 MPa at the innermost to the highest values at the outermost tray location; a significant difference was identified only between the extreme positions. BFS showed a positive correlation with radial distance (r ≈ 0.43, p = 0.006). L*, a*, b* and ΔEpos exhibited small but statistically significant positional differences (0.3-0.8) in individual positions. Relative colour differences ΔErel (vs. the inner position) ranged between 1.3 and 1.9 and were not significantly affected by location. MT showed minor but significant variations (<5%) between some positions. Gloss values varied numerically, but without statistically significant positional effects.

CONCLUSIONS: In a PolyJet system, the location of the printed object on the build platform has a measurable effect on biaxial flexural strength and induces subtle changes in colour and translucency, whereas gloss remains unaffected. Although most optical differences appear clinically negligible, positional effects on strength may be relevant for load-bearing temporary restorations and should be considered when arranging critical cases on the build platform.

PMID:42234482 | DOI:10.11607/ijp.9798

Int J Prosthodont. 2026 Jun 2;0(0):1-26. doi: 10.11607/ijp.9754. Online ahead of print.

ABSTRACT

PURPOSE: This study aimed to characterize the adhesion and biofilm formation of key denture-associated microbes-Candida albicans, Porphyromonas gingivalis, and Streptococcus mutans-on a 3D-printed photopolymer resin (FotoDent®).

MATERIALS AND METHODS: Discs were fabricated at three distinct printing orientations (0°, 45°, and 90°) to assess the impact of layer deposition on surface properties and microbial colonization. Conventionally polymerized ProBase® cold resin discs served as controls. All specimens underwent comprehensive surface characterization, including measurement of areal surface roughness, static contact angle with polar and apolar liquids, and surface free energy components. Adherent microbial cells were quantified using species-specific quantitative real-time PCR (qPCR) following standardized biofilm assays.

RESULTS: Microbial adhesion to the 3D-printed resin was highly dependent on print orientation, with cell counts for all three species decreasing significantly (p<0.05) from the 0° to the 90° orientation. This trend was paralleled by an increase in surface roughness (Ra) with higher print angles. A strong, statistically significant positive correlation was observed between the surface roughness of FotoDent® discs and biofilm cell numbers for C. albicans (r=0.815), P. gingivalis (r=0.883), and S. mutans (r=0.903). In contrast, adhesion to the control ProBase® material was consistently higher and showed no significant correlation with any measured surface characteristic-roughness, wettability, or surface energy.

CONCLUSION: These findings indicate that for 3D-printed dental resins, printing parameters, especially orientation, critically determine the final surface topography, which in turn is a affects microbial adhesion and biofilm formation.

PMID:42234481 | DOI:10.11607/ijp.9754

Int J Prosthodont. 2026 Jun 3;0(0). doi: 10.11607/ijp.9838. Online ahead of print.

ABSTRACT

PURPOSE: To explore private practitioners’ perspectives on participation in clinical dental research, identify perceived research priorities, and assess current and anticipated future use of research information sources in reconstructive dentistry.

MATERIALS AND METHODS: This cross-sectional survey included dentists practicing in Switzerland in private practice or academic settings. An anonymous online questionnaire with 13 structured items was distributed between June and November 2024 via professional meetings and alumni networks. Survey domains included demographics, current research involvement, interest in future research participation, research priorities, and use of research information sources. Descriptive statistics were calculated. Paired comparisons between current and anticipated future research information sources were analyzed using McNemar’s exact test, with p-values adjusted for multiple testing using the Benjamini-Hochberg false discovery rate procedure. Ranking data were summarized using mean ranks. Analyses were exploratory and hypothesis-generating.

RESULTS: Fifty-six dentists completed the survey (median years since graduation: 18 [Q1-Q3: 7-23]). One-third of respondents (33.9%) reported current involvement in research, while 46.4% expressed interest in future participation, particularly in clinical trials. Anticipated future use of colleagues, study clubs/alumni networks, PubMed, and continuing education as research information sources decreased significantly compared with current use (all adjusted p≤0.032), whereas reliance on journals and social media remained stable. Ranking analyses indicated that predictability was the highest priority in therapy-related decision-making, a trusting patient-clinician relationship was most important in everyday practice, and patient satisfaction was the primary determinant of treatment success.

CONCLUSIONS: Private practitioners showed moderate interest in clinical research participation and emphasized clinically relevant, practice-oriented research priorities. Integrating practitioners’ perspectives may help align prosthodontic research more closely with real-world clinical needs.

PMID:42234480 | DOI:10.11607/ijp.9838

Clin J Sport Med. 2026 Jun 3. doi: 10.1097/JSM.0000000000001478. Online ahead of print.

ABSTRACT

OBJECTIVE: The effect of isometric exercise on pain and strength for various tendinopathies has been investigated but there are no published studies on proximal hamstring tendinopathy (PHT). The objective of this trial was to determine the effectiveness of isometric versus isotonic exercise on pain and strength in people with PHT.

DESIGN: Prospective, crossover, assessor blinded randomized trial.

SETTING: Neuroplasticity laboratory at La Trobe University, Melbourne, Australia.

PARTICIPANTS: A total of 20 participants with clinical features of PHT (greater than 3 months in duration) were included.

INTERVENTIONS: All participants completed 1 session of isometric and 1 session of isotonic exercise with a 3 to 7 days washout period between sessions. Participants were randomly allocated to the order of interventions.

MAIN OUTCOME MEASURES: Primary outcomes were pain measured with a functional task (modified arabesque) assessed at 0 minutes, 45 minutes, and 24 hours postintervention, strength was measured with a dynamometer, assessed at 0 minutes and 45 minutes postintervention. A secondary outcome was pain with sitting assessed at 24 hours postintervention.

RESULTS: Of the 20 enrolled participants, 19 (95%) completed both intervention sessions. There were no statistically significant differences between groups at any timeframe for pain with a functional task, strength, or sitting symptoms. There was no significant difference in the number of participants who achieved a clinically relevant reduction in pain with a functional task or sitting symptoms.

CONCLUSION: There were no differences between isometric and isotonic exercise for strength, pain with a functional task, or sitting symptoms in participants with PHT.

KEY POINTS: This is the first trial to evaluate the effect of isometric compared with isotonic exercise for pain and strength in PHT. No difference was found between groups. Selection of exercise type for PHT may be on a ‘trial and error’ basis and with consideration of long-term outcomes.

PMID:42234473 | DOI:10.1097/JSM.0000000000001478

JAMA Surg. 2026 Jun 3. doi: 10.1001/jamasurg.2026.1796. Online ahead of print.

ABSTRACT

IMPORTANCE: Sleep timing regularity is increasingly recognized as a determinant of cognitive performance, yet its influence on surgeons’ well-being and patient safety remains unexplored.

OBJECTIVE: To evaluate the association between surgeons’ sleep timing regularity and major adverse events in their patients.

DESIGN, SETTING, AND PARTICIPANTS: This multicenter prospective cohort study was conducted from November 1, 2020, to December 31, 2021, across 14 surgical departments in 7 specialties at 4 university hospitals in France. Patients were excluded if they were younger than 18 years, underwent palliative surgery, had incomplete operative time stamps, or were operated on by surgeons with invalid sleep data. Study data were analyzed from January to June 2025.

EXPOSURES: Surgeons’ sleep was continuously monitored using actigraphy. Sleep timing regularity in the 30 days preceding surgery was quantified using midsleep time (midpoint between bedtime and get-up time). Social jet lag (SJL) was defined as the absolute difference between midsleep times on free days and workdays, and midsleep time variability was the SD of daily midsleep times.

MAIN OUTCOMES AND MEASURES: Outcomes included major adverse events within 30 days postoperatively, including inpatient death, prolonged intensive care unit stay, reoperation, or severe complications. Mixed-effects multivariable models were adjusted for surgeon sleep duration, midsleep time, age, sex, professional status, working hours, night shifts, patient case mix (ie, a composite risk score incorporating patient comorbidities and surgery characteristics), and time of incision, with a random effect for surgeons. Surgeon burnout was assessed using the Maslach Burnout Inventory.

RESULTS: Among 7117 operations (7117 patients; mean [SD] age, 55.9 [17.5] years; 3877 female [54.5%]) performed by 38 attending surgeons (mean [SD] age at study start, 46.1 [8.5] years; 30 male [79%]), 1410 (19.8%) resulted in a major adverse event. SJL of 2 or more hours (342 operations [4.8%]; 7 surgeons) was associated with increased risk of major adverse events compared with less than 1 hour (adjusted relative risk [RR], 1.36; 95% CI, 1.04-1.69) and 1 to 2 hours (RR, 1.45; 95% CI, 1.12-1.81). Midsleep time variability of 60 minutes or longer (864 operations [12.1%]; 20 surgeons) was not associated with adverse outcomes. Surgeons with burnout had higher median [IQR] social jet lag (75 [47-94] vs 52 [38-61] minutes; P = .04) and midsleep time variability (54 [44-68] vs 43 [36-48] minutes; P = .01) than those without burnout.

CONCLUSIONS AND RELEVANCE: Patients operated on by surgeons experiencing substantial social jet lag had a higher associated risk of major adverse events. Interventions promoting regular sleep timing and reducing circadian misalignment may improve surgeon burnout and patient safety.

PMID:42234451 | DOI:10.1001/jamasurg.2026.1796

JAMA Psychiatry. 2026 Jun 3. doi: 10.1001/jamapsychiatry.2026.1183. Online ahead of print.

ABSTRACT

IMPORTANCE: Childhood trauma is associated with increased risk for bipolar disorder, but the biological mechanisms of this association remain incompletely defined. Gray matter differences observed after trauma exposure overlap with those reported in bipolar disorder, suggesting that the association of childhood trauma with bipolar disorder might be mediated through brain morphology.

OBJECTIVE: To determine whether cortical thickness, cortical surface, or subcortical volume mediate the association of childhood trauma with bipolar disorder.

DESIGN, SETTING, AND PARTICIPANTS: This case-control study conducted a cross-sectional analysis of individuals with bipolar disorder and healthy controls from 19 international cohorts (Enhancing NeuroImaging Genetics Through Meta-Analyses [ENIGMA] Bipolar Disorder Working Group) from January 2010 to December 2022. Data were analyzed from January 2025 to January 2026.

EXPOSURES: The primary exposure was the severity of total childhood trauma assessed with the Childhood Trauma Questionnaire, with secondary analyses of 5 subscales (emotional neglect and abuse, physical neglect and abuse, and sexual abuse).

MAIN OUTCOMES AND MEASURES: The primary outcome was bipolar disorder diagnosis (case vs control). The primary measure was the mediation effects of childhood trauma on diagnosis via gray matter (75 bilateral-averaged cortical thickness, surface, and subcortical volume measures). The mediation pathway from severity of childhood trauma to bipolar disorder through brain morphology was specified a priori. High-dimensional mediation analysis, with leave-one-site-out cross-validation and permutation testing for significance (false discovery rate [FDR]), was conducted.

RESULTS: The final sample included 2221 healthy controls (mean [SD] age, 35.6 [13.2] years; 1274 female [57%]) and 1031 participants with bipolar disorder (mean [SD] age, 38.6 [13.7] years; 579 female [56%]). Severity of childhood trauma was directly associated with higher likelihood of having a bipolar disorder diagnosis (median coefficient, 0.841; 95% CI, 0.834-0.851; range, 0.776-0.893; FDR P < .001). Less than 1% of the association between childhood trauma and bipolar disorder was mediated by brain morphology. Statistically significant mediators were hippocampal volume (median coefficient, 0.004; 95% CI, 0.002-0.005; range, 0-0.008; FDR P < .001), medial orbitofrontal gray matter thickness (median coefficient, 0.002; 95% CI, 0.002-0.003; range, 0-0.004; FDR P < .001), and superior frontal gyrus gray matter thickness (median coefficient, 0.002; 95% CI, 0.002-0.003; range, 0-0.005; FDR P < .001).

CONCLUSIONS AND RELEVANCE: This study found that severity of childhood trauma exposure was associated with bipolar disorder diagnosis in part through a smaller hippocampus, thinner cortex in the medial orbitofrontal gyrus, and thinner cortex in the superior frontal gyrus. The identification of this mechanistic pathway improves understanding of the disorder, could help to identify those at risk, and enable the development of new interventions.

PMID:42234441 | DOI:10.1001/jamapsychiatry.2026.1183

Gen Thorac Cardiovasc Surg. 2026 Jun 3. doi: 10.1007/s11748-026-02328-1. Online ahead of print.

ABSTRACT

OBJECTIVES: The technical complexity of complex segmentectomy for non-small cell lung cancer raises concerns regarding perioperative safety and oncologic adequacy. We evaluated whether complex segmentectomy compromises perioperative or long-term outcomes compared with simple segmentectomy.

METHODS: We retrospectively reviewed 542 consecutive patients undergoing anatomical segmentectomy for resectable non-small cell lung cancer at a single cancer center (2014-2024). Simple segmentectomy was defined as upper division, lingular, S6, or basal segmentectomies; others were classified as complex segmentectomy. Perioperative, overall, and recurrence-free survival were compared between simple (n = 284) and complex (n = 258) segmentectomies. Cox proportional hazards models identified predictors of recurrence-free survival.

RESULTS: Baseline demographics and pulmonary function were similar between groups, whereas complex segmentectomy was more frequently performed for smaller ground-glass-dominant tumors using video-assisted thoracoscopic surgery. Operative time was slightly shorter for complex segmentectomy, while rates of major complications requiring intervention and 30-/90-day mortality were similar. At a median follow-up of 49 months, the 5-year overall survival and recurrence-free survival rates for the entire cohort were 91.5% and 85.2%, respectively, with no statistically significant differences between the complex segmentectomy and simple segmentectomy groups. In multivariable analysis, age, sex, and lymphovascular invasion were independent predictors of RFS, whereas smoking history, radiological tumor appearance, ND2 dissection, and complex segmentectomy were not.

CONCLUSIONS: In this single-center cohort, complex segmentectomy achieved perioperative and long-term outcomes comparable to those of simple segmentectomy and appears to be an oncologically acceptable, parenchyma-sparing option for appropriately selected patients with resectable non-small cell lung cancer.

PMID:42234389 | DOI:10.1007/s11748-026-02328-1

J Endocrinol Invest. 2026 Jun 3. doi: 10.1007/s40618-026-02937-w. Online ahead of print.

ABSTRACT

BACKGROUND: Current guidelines recommend screening for primary aldosteronism (PA) only in patients with hypertension and/or hypokalemia. However, recent evidence raises the question of whether normotensive patients with adrenal incidentalomas (AIs) might also exhibit biochemical features of aldosterone dysregulation. This study aimed to evaluate the prevalence and clinical significance of aldosterone-related abnormalities in normotensive patients with AIs.

METHODS: We retrospectively analyzed 452 patients with AIs, of whom 202 were normotensive. Hormonal evaluation included plasma aldosterone concentration (PAC) and either plasma renin activity or concentration. The aldosterone-to-renin ratio (ARR) was considered elevated if > 20 when calculated with plasma renin activity or > 1.8 when using direct renin concentration. We performed comparative analyses according to blood pressure (BP) status, PAC, ARR, and combined aldosterone phenotypes (PAC > 10 ng/dL with elevated ARR, PAC > 10 ng/dL with normal ARR, and PAC ≤ 10 ng/dL with elevated ARR). Median follow-up was 3 years.

RESULTS: Normotensive patients had a median age of 57 years (IQR 14), and 46.3% were male. Among them, 44.8% had PAC > 10 ng/dL and 33.3% had an elevated ARR. Serum potassium levels were within the normal range (median 4.3 mmol/L, IQR 0.5). In normotensive patients, no significant differences in systolic or diastolic BP were observed according to PAC or ARR alone. In the overall cohort, diastolic BP was higher in patients with elevated ARR. Importantly, diastolic BP differed significantly across combined aldosterone phenotypes (p = 0.015), with higher values observed in patients with PAC > 10 ng/dL and elevated ARR compared with those with PAC > 10 ng/dL and normal ARR (adjusted p = 0.048). During follow-up, incident hypertension was numerically higher among ARR-positive normotensive patients (18.4% vs. 11.0%), although this difference did not reach statistical significance (p = 0.215). A total of 10 patients were diagnosed with confirmed PA, including two normotensive individuals.

CONCLUSION: Biochemical evidence of aldosterone dysregulation is common in patients with AIs, including normotensive individuals. While isolated elevations in PAC or ARR were not associated with significant BP differences, the coexistence of elevated PAC and ARR identified a subgroup with a more pronounced hemodynamic profile. These findings support the concept of a continuum of aldosterone excess and suggest that combined biochemical phenotypes may be more informative than isolated markers. Further prospective studies are needed to clarify the clinical implications of these findings and to define optimal screening strategies in this population.

PMID:42234347 | DOI:10.1007/s40618-026-02937-w

Eur Phys J E Soft Matter. 2026 Jun 3;49(6):47. doi: 10.1140/epje/s10189-026-00577-9.

ABSTRACT

We investigate the influence of drop volume on partial wetting of sessile drops on a horizontal solid substrate for up to large Bond numbers, considering water on both polymethyl methacrylate (PMMA) and aluminum-coated substrates, as well as glycerol on PMMA. The horizontal orientation of the substrate, along with methods for creating sessile drops, facilitated the rotational symmetry of drops to perform controlled and reproducible experiments. In particular, we explore the manner in which the statistic macroscopic contact angle (MCA) depends on the sessile drop volume or related Bond numbers, whether the drop is injected via a syringe positioned above the substrate (DSA30 Krüss equipment) or from below the substrate through a tiny hole drilled in it. In both cases, experimental results exhibit that as the drop volume is increased spanning Bond numbers in the range [0.1-14], the contact line advances on the substrate and the MCA significantly decreases down to an asymptotic value.

PMID:42234346 | DOI:10.1140/epje/s10189-026-00577-9