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Nevin Manimala Statistics

Outcomes of dental implants in young patients with congenital versus non-congenital missing teeth

Int J Implant Dent. 2021 Aug 23;7(1):92. doi: 10.1186/s40729-021-00362-7.

ABSTRACT

OBJECTIVE: This cross-sectional study aims to investigate the effect of the cause of missing teeth on the survival and subjective success of dental implant treatment (DIT) in young patients with missing teeth due to non-congenital causes (tooth loss) in comparison to patients with missing teeth because of congenital causes (hypodontia and oligodontia).

MATERIAL AND METHODS: All patients were asked 7 questions to extract information about the survival and subjective success of DIT. Implant survival function was designed using the Kaplan-Meier analysis. Differences in implant success outcomes were studied using binary logistic regression analysis.

RESULTS: One hundred ten patients aged 18 to 40 years old were included, whereof 32 patients with tooth loss, 25 patients with hypodontia and 53 patients with oligodontia. In the tooth loss group, implant survival reached 96.9%; in the hypodontia group 96.0%; and in the oligodontia group 88.7%. Regarding subjective implant success, patient satisfaction was significantly higher (p < 0.040) among patients with congenital missing teeth in comparison to patients with tooth loss. Other implant success components showed no statistically significant difference (p > 0.050) between the groups.

CONCLUSION: The cause of missing teeth does not influence implant survival. However, the cause of missing teeth does have a significant impact on patient satisfaction (implant success), ascertaining young patients with congenital missing teeth as more satisfied of DIT than young patients with tooth loss.

CLINICAL RELEVANCE: Young patients with tooth agenesis and with an increased number of missing teeth are more content about the treatment with dental implants than patients with tooth loss. Furthermore, a consensus regarding the assessment of implant success is an essential concern for clarification.

PMID:34423396 | DOI:10.1186/s40729-021-00362-7

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Interobserver reliability is higher for assessments with 3D software-generated models than with conventional MRI images in the classification of trochlear dysplasia

Knee Surg Sports Traumatol Arthrosc. 2021 Aug 22. doi: 10.1007/s00167-021-06697-3. Online ahead of print.

ABSTRACT

PURPOSE: Trochlear dysplasia is a significant risk factor for patellofemoral instability. The severity of trochlear dysplasia is commonly evaluated based on the Dejour classification in axial MRI slices. However, this often leads to heterogeneous assessments. A software to generate MRI-based 3D models of the knee was developed to ensure more standardized visualization of knee structures. The purpose of this study was to assess the intra- and interobserver agreements of 2D axial MRI slices and an MRI-based 3D software generated model in classification of trochlear dysplasia as described by Dejour.

METHODS: Four investigators independently assessed 38 axial MRI scans for trochlear dysplasia. Analysis was made according to Dejour’s 4 grade classification as well as differentiating between 2 grades: low-grade (types A + B) and high-grade trochlear dysplasia (types C + D). Assessments were repeated following a one-week interval. The inter- and intraobserver agreement was determined using Cohen’s kappa (κ) and Fleiss kappa statistic (κ). In addition, the proportion of observed agreement (po) was calculated for assessment of intraobserver agreement.

RESULTS: The assessment of the intraobserver reliability with regard to the Dejour-classification showed moderate agreement values both in the 2D (κ = 0.59 ± 0.08 SD) and in the 3D analysis (κ = 0.57 ± 0.08 SD). Considering the 2-grade classification, the 2D (κ = 0.62 ± 0.12 SD) and 3D analysis (κ = 0.61 ± 0.19 SD) each showed good intraobserver matches. The analysis of the interobserver reliability also showed moderate agreement values with differences in the subgroups (2D vs. 3D). The 2D evaluation showed correspondences of κ = 0.48 (Dejour) and κ = 0.46 (high / low). In the assessment based on the 3D models, correspondence values of κ = 0.53 (Dejour) and κ = 0.59 (high / low) were documented.

CONCLUSION: Overall, moderate-to-good agreement values were found in all groups. The analysis of the intraobserver reliability showed no relevant differences between 2 and 3D representation, but better agreement values were found in the 2-degree classification. In the analysis of interobserver reliability, better agreement values were found in the 3D compared to the 2D representation. The clinical relevance of this study lies in the superiority of the 3D representation in the assessment of trochlear dysplasia, which is relevant for future analytical procedures as well as surgical planning.

LEVEL OF EVIDENCE: Level II.

PMID:34423397 | DOI:10.1007/s00167-021-06697-3

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The effect of 12 weeks of mechanical vibration on root resorption: a micro-CT study

Prog Orthod. 2021 Aug 23;22(1):28. doi: 10.1186/s40510-021-00369-1.

ABSTRACT

OBJECTIVE: The aim was to investigate the effect of mechanical vibration on root resorption with or without orthodontic force application.

MATERIAL AND METHODS: Twenty patients who required maxillary premolar extractions as part of orthodontic treatment were randomly divided into two groups of 10: no-force group and force group. Using a split-mouth procedure, each patient’s maxillary first premolar teeth were randomly assigned as either vibration or control side for both groups. A buccally directed vibration of 50 Hz, with an Oral-B HummingBird device, was applied to the maxillary first premolar for 10 min/day for 12 weeks. After the force application period, the maxillary first premolars were extracted and scanned with micro-computed tomography. Fiji (ImageJ), performing slice-by-slice quantitative volumetric measurements, was used for resorption crater calculation. Total crater volumes were compared with the Wilcoxon and Mann-Whitney U tests.

RESULTS: The total crater volumes in the force and no-force groups were 0.476 mm3 and 0.017 mm3 on the vibration side and 0.462 mm3 and 0.031 mm3 on the control side, respectively. There was no statistical difference between the vibration and control sides (P > 0.05). There was more resorption by volume in the force group when compared to the no-force group (P < 0.05).

CONCLUSION: Mechanical vibration did not have a beneficial effect on reducing root resorption; however, force application caused significant root resorption.

PMID:34423388 | DOI:10.1186/s40510-021-00369-1

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Sex matters: association between callous-unemotional traits and uncinate fasciculus microstructure in youths with conduct disorder

Brain Imaging Behav. 2021 Aug 23. doi: 10.1007/s11682-021-00499-4. Online ahead of print.

ABSTRACT

Among youths with conduct disorder, those with callous-unemotional traits are at increased risk for persistent antisocial behaviour. Although callous-unemotional traits have been found to be associated with white-matter brain abnormalities, previous diffusion imaging studies were conducted in small samples, preventing examination of potential sex by callous-unemotional traits interaction effects on white matter. Here, we used tract-based spatial statistics at a whole-brain level and within regions of interest to compare the white matter correlates of callous-unemotional traits in female vs. male youths with conduct disorder, in a sample (n = 124) recruited through a multi-site protocol. A sex-specific association between callous-unemotional traits and white matter was found in the left uncinate fasciculus, where callous-unemotional traits were positively associated with axial diffusivity in males, while an opposite pattern was found in females. These findings are in line with previous studies suggesting that the uncinate fasciculus is a key tract implicated in the development of psychopathy, but also add to recent evidence showing that sexual dimorphism needs to be taken into account when examining the structural correlates of mental disorders in general, and callous-unemotional traits in conduct disorder in particular.

PMID:34423395 | DOI:10.1007/s11682-021-00499-4

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Novel biomarker-driven prognostic models to predict morbidity and mortality in chronic heart failure: the EMPEROR-Reduced trial

Eur Heart J. 2021 Aug 23:ehab579. doi: 10.1093/eurheartj/ehab579. Online ahead of print.

ABSTRACT

AIMS: The aim of this study was to generate a biomarker-driven prognostic tool for patients with chronic HFrEF. Circulating levels of N-terminal pro B-type natriuretic peptide (NT-proBNP) and high-sensitivity cardiac troponin T (hs-cTnT) each have a marked positive relationship with adverse outcomes in heart failure with reduced ejection fraction (HFrEF). A risk model incorporating biomarkers and clinical variables has not been validated in contemporary heart failure (HF) trials.

METHODS AND RESULTS: In EMPEROR-Reduced, 33 candidate variables were pre-selected. Multivariable Cox regression models were developed using stepwise selection for: (i) the primary composite outcome of HF hospitalization or cardiovascular death, (ii) all-cause death, and (iii) cardiovascular mortality. A total of 3730 patients were followed up for a median of 16 months, 823 (22%) patients had a primary outcome and 515 (14%) patients died, of whom 389 (10%) died from a cardiovascular cause. NT-proBNP and hs-cTnT were the dominant predictors of the primary outcome, and in addition, a shorter time since last HF hospitalization, longer time since HF diagnosis, lower systolic blood pressure, New York Heart Association (NYHA) Class III or IV, higher heart rate and peripheral oedema were key predictors (eight variables in total, all P < 0.001). The primary outcome risk score discriminated well (c-statistic = 0.73), with patients in the top 10th of risk having an event rate >9 times higher than those in the bottom 10th. Empagliflozin benefitted patients across risk levels for the primary outcome. NT-proBNP and hs-cTnT were also the dominant predictors of all-cause and cardiovascular mortality, followed by NYHA Class III or IV and ischaemic aetiology (four variables in total, all P < 0.001). The mortality risk model presented good event discrimination for all-cause and cardiovascular mortality (c-statistic = 0.69 for both). These simple models were externally validated in the BIOSTAT-CHF study, achieving similar c-statistics.

CONCLUSIONS: The combination of NT-proBNP and hs-cTnT with a small number of readily available clinical variables provides prognostic assessment for patients with HFrEF. This predictive tool kit can be easily implemented for routine clinical use.

PMID:34423361 | DOI:10.1093/eurheartj/ehab579

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Effect and quality of couple-based interventions of middle-aged and older adults with type 2 diabetes mellitus: a scoping review

Fam Pract. 2021 Aug 23:cmab093. doi: 10.1093/fampra/cmab093. Online ahead of print.

ABSTRACT

BACKGROUND: Studies have shown the existence of health concordance between patients with type 2 diabetes mellitus (T2DM) and their spouses, and also that spouses could influence the effect of self-management, benefiting patients’ health. However, these studies are heterogeneous and the evidence is inconclusive.

OBJECTIVE: To synthesize evidence from published randomized controlled trials: the interventional effects and the quality of study performance, also to identify the research gap and the directions for future studies.

METHODS: We performed the scoping review by following the PRISMA-ScR guidance. We searched and examined the reports from MEDLINE, EMBASE, PsychInfo, CINAHL Plus by the pre-specified criteria. Key characteristics and information of eligible reports were extracted, analysed and synthesized comprehensively, and the results were presented in the form of words and diagrams.

RESULTS: We identified 5 reports from 4 studies out of 3479 records included. Qualified studies indicated a positive effect of couple-based interventions on couples’ distress. Insufficient evidence on physiological health or health behaviours was identified owing to the small number of included studies and inconsistent assessment outcomes. The methodological quality across these studies was generally low due to inadequate reporting of study process and substantial biases.

CONCLUSIONS: Couple-based interventions for patients with T2DM showed small effects on the couple’s distress while the effects of other outcomes were inconclusive. Future studies should strengthen methodologies by using standard measures of core diabetic outcomes, including detailed assessments of implementation process, and taking a dyadic approach to systematically examine the effects.

PMID:34423363 | DOI:10.1093/fampra/cmab093

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A randomized controlled trial comparing a manual and computer version of CALM in VA community-based outpatient clinics

J Affect Disord Rep. 2021 Dec;6:100202. doi: 10.1016/j.jadr.2021.100202. Epub 2021 Jul 20.

ABSTRACT

BACKGROUND: This study compared a computer and manual version of a tailored Coordinated Anxiety Learning and Management (VA CALM) protocol on provider fidelity to CBT and patient outcomes.

METHODS: This study was a cluster randomized controlled trial. Providers (N = 32) were randomized to deliver VA CALM by computer or manual. Veteran patients (N = 135), treated by study providers, were recruited. The primary outcome was CBT fidelity, measured by rating audiotaped sessions. Secondary outcomes were Veterans’ general (BSI-18 GSI, SF-12) and disorder-specific (GAD-7, PCL-5, PHQ-9) outcomes assessed at baseline, three and six month follow-up.

RESULTS: We found a large (d = 0.88) but not statistically significant difference in mean fidelity rating scores between conditions. Compared with the manual, participants with generalized anxiety disorder receiving VA CALM by computer reported lower GAD-7 scores at three (-5.88; 95% CI=-11.37, -0.39) and six month (-5.25; 95% CI=-10.29, -0.22) follow-ups (d = 0.37 to 0.55). Participants in the computer and manual conditions reported lower PHQ-9 (-3.11; 95% CI=-5.51, -0.71; -4.06; 95% CI=-7.22, -0.90, respectively) and BSI-18 GSI (0.78; 95% CI=0.68,0.90; 0.71; 95% CI=0.58, 0.87, respectively) scores from baseline to six month follow-up. We did not find statistically significant differences over time or between conditions on SF-12 or PCL-5 scores.

LIMITATIONS: This study was underpowered to test the primary outcome. Small samples sizes in the disorder-specific subgroup analysis may limit the generalizability of findings.

CONCLUSIONS: Neither modality proved to be superior on VA CALM fidelity. The computer version of VA CALM, compared to the manual, may provide modest benefit to Veterans with GAD.

PMID:34423330 | PMC:PMC8373037 | DOI:10.1016/j.jadr.2021.100202

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Adjunctive benefit of ozonized water irrigation with mechanical debridement in the management of Stage III periodontitis- A randomised controlled clinical and biochemical study

Int J Dent Hyg. 2021 Aug 22. doi: 10.1111/idh.12547. Online ahead of print.

ABSTRACT

OBJECTIVE: Periodontitis is a chronic inflammatory disease initiated by dysbiotic microbiota. Conventional mechanical debridement often needs adjunctive measures to control the disease process. The objective of the present study was to find out benefit of ozonized water irrigation along with nonsurgical periodontal therapy for the management of periodontitis.

METHODS: We have conducted a Randomized Controlled, triple blinded, parallel group clinical trial. Test Group (n=25) was treated with ozonized water irrigation whereas control group (n=25) received normal saline irrigation along with mechanical debridement. Full mouth plaque score, bleeding score, probing pocket depth and clinical attachment loss were evaluated at baseline and 4 weeks after treatment. Salivary Interleukin 1 beta was analyzed using enzyme linked immunosorbent assay. Analysis of covariance, t test and chi square test were used for intergroup comparison. Intragroup comparison was done using paired t test.

RESULTS: Adjunctive ozone water irrigation resulted in significant improvement in all clinical parameters except probing pocket depth after adjusting the extraneous effects due to initial confounding factors(p<0.001). But as per subgroup analysis ozone water irrigation resulted in significant reduction of pocket depth in deep pockets (p=0.01) and number of sites with pocket depth ≥4mm with bleeding on probing. Salivary Interleukin 1 Beta also reduced significantly in test group after therapy.

CONCLUSION: Ozone irrigation provide adjunctive benefit along with nonsurgical periodontal therapy in reducing clinical parameters as well as inflammatory mediator in saliva. But long- term benefits need to be assessed with future studies.

PMID:34420261 | DOI:10.1111/idh.12547

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Does hospitalisation impact the successful ageing of community-dwelling older adults?: A propensity score matching analysis using the Korean national survey data

Int J Older People Nurs. 2021 Aug 22:e12413. doi: 10.1111/opn.12413. Online ahead of print.

ABSTRACT

OBJECTIVES: For community-dwelling older adults with hospitalisation experience, it is necessary to be strategic when promoting successful ageing. This study aimed to investigate whether components of successful ageing (i.e., diseases and complications, functions and engagement with life) differ according to hospitalisation experience in community-dwelling older adults.

METHODS: A secondary data analysis with the Korean national survey was performed. Using propensity score matching, 1812 older adults with hospitalisation experience were matched to 1812 older adults without hospitalisation experience. Sampling weight of the survey was considered for all statistical analyses.

RESULTS: The hospitalisation experienced group had more chronic illnesses, malnourishment, impairment in physical function, and depressive symptoms, and less activity in terms of working and social activities. There were no differences in cognitive function or religious activities.

CONCLUSIONS: Older adults with hospitalisation experience were less likely to experience successful ageing. To facilitate successful ageing of community-dwelling older adults with hospitalisation experience, nursing interventions for effective transitional care to encourage the use of community resources and participation in social activities are needed.

PMID:34420263 | DOI:10.1111/opn.12413

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Cotton versus medical face mask influence on skin characteristics during COVID-19 pandemic: A short-term study

Skin Res Technol. 2021 Aug 22. doi: 10.1111/srt.13091. Online ahead of print.

ABSTRACT

BACKGROUND: In the still ongoing COVID-19 pandemic, one of the main prevention strategy remain to be the use of protective face masks. Changes in skin characteristics and dermatological problems related to wearing different types of masks have been observed. The aim of this study was to compare the short-term effects of cotton versus medical masks on skin biophysical parameters in general population.

MATERIALS AND METHODS: Twenty-eight human volunteers were enrolled and divided in cotton mask and medical mask wearing groups. We measured four skin biophysical parameters: trans-epidermal water loss (TEWL), stratum corneum hydration (SCH), skin pH, and erythema index (EI) before and 3 h after wearing masks on both uncovered and mask-wearing face area.

RESULTS: TEWL increased after 3 h on exposed skin in cotton mask group and slightly decreased in medical mask group There was an increase in SCH after 3 h of wearing protective face masks in both groups. pH of the covered skin slightly decreased while EI increased after 3 h in both groups; changes were not statistically significant. Parameters did not change significantly on uncovered skin.

CONCLUSION: There were no differences between the influence of cotton versus medical protective masks on the skin of healthy volunteers in our study. Both types of masks could be recommended for short-time protection in individuals with healthy skin during COVID-19 pandemic.

PMID:34420235 | DOI:10.1111/srt.13091