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Mehl A, von Laue B, Trapp B, Gerlach K, Reif M, Pretzer K, Zerm R, Berger B, Gutenbrunner C, Kröz M. The Anthroposophic Artistic Movement Assessment for Eurythmy Therapy (AART-ASSESS-EuMove). A validation study. Complement Ther Med 2023; 76:102957. [PMID: 37286140 DOI: 10.1016/j.ctim.2023.102957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/28/2023] [Accepted: 05/31/2023] [Indexed: 06/09/2023] Open
Abstract
OBJECTIVE Eurythmy Therapy (ET) is a mindfulness oriented therapy developed in the context of anthroposophic medicine. Despite commonly used in practice, it remains unclear whether active participation (Inner Correspondence) during ET can be observed in eurythmy gestures (EGest). So far, no validated peer-report instrument to evaluate EGest exists. METHOD To validate an 83-item ET peer-report scale, a nested study on a sample of n = 82 breast cancer survivors with cancer-related fatigue was conducted. EGest were evaluated twice, at baseline and at 10-week follow-up, by peer-reports from two separate therapists. Interrater-reliability (IRR) was estimated by Cohen's weighted kappa (κw) across all items. Additionally, reliability-(RA) and principal component analyses (PCA) were conducted. Patients completed two self-report scales: Satisfaction with ET (SET) and Inner Correspondence with the Movement Therapy (ICPH). RESULTS IRR was greater than or equal (κw ≥ 0.25) for 41 items (49.3%) with a mean weighted kappa of κ̅w = 0.40 (SD = 0.17, range = 0.25-0.85). RA resulted in the exclusion of 25 items with insufficient item-total correlations < 0.40. A PCA with 16 items revealed 3 subscales: 1. Mindfulness in Movement (8 items), 2. Motor Skills (5 items), 3. Walking Pattern (3items) explaining 63.86% of total variance. Internal consistency (Cronbach's alpha) was high for the sum score with α = 0.89 and for the subscales with α = 0.88, 0.86 and 0.84 respectively. Significant small to moderate subscale correlations were found ranging from r = 0.29-0.63 (all p < 0.01). Mindfulness in Movement correlated with Inner Correspondence (r = 0.32) and with Satisfaction with ET (r = - 0.25, both p < 0.05). CONCLUSIONS The new AART-ASSESS-EuMove is the first consistent and reliable peer-report instrument to evaluate EGest. It shows associations between peer-reported Mindful Movement and patients' self-reported ICPH and SET.
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Affiliation(s)
- A Mehl
- Research Institute Havelhöhe, Kladower Damm 221, 14089 Berlin, Germany.
| | - B von Laue
- AnthroMed Öschelbronn - Centre for Integrative Medicine, 75233 Niefern-Öschelbronn, Germany
| | - B Trapp
- Praxis Frauenheilkunde - Lebenswunder, Berlin-Havelhöhe, 14089 Berlin, Germany
| | - K Gerlach
- Institute for Eurythmy Therapy, Research Institute of Arts Therapy, Alanus Hochschule, Villestraße 3, 53347 Alfter, Germany
| | - M Reif
- Society for Clinical Research, Hardenbergstraße 20, 10623 Berlin, Germany
| | - K Pretzer
- Raumzeitwerker, Practice for Eurythmy Therapy, 10967 Berlin, Germany
| | - R Zerm
- Research Institute Havelhöhe, Kladower Damm 221, 14089 Berlin, Germany
| | - B Berger
- Institute for Integrative Medicine, University Witten/Herdecke, Gerhard Kienle Weg 8, 58313 Herdecke, Germany
| | - C Gutenbrunner
- Clinic for Rehabilitative Medicine, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany
| | - M Kröz
- Research Institute Havelhöhe, Kladower Damm 221, 14089 Berlin, Germany; Institute for Integrative Medicine, University Witten/Herdecke, Gerhard Kienle Weg 8, 58313 Herdecke, Germany; Hospital Arlesheim, Research Department, Pfeffinger Weg 1, 4144 Arlesheim, Switzerland
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Cawley C, Bergey F, Mehl A, Finckh A, Gilsdorf A. Novel Methods in the Surveillance of Influenza-Like Illness in Germany Using Data From a Symptom Assessment App (Ada): Observational Case Study. JMIR Public Health Surveill 2021; 7:e26523. [PMID: 34734836 PMCID: PMC8722671 DOI: 10.2196/26523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 08/04/2021] [Accepted: 08/16/2021] [Indexed: 11/13/2022] Open
Abstract
Background Participatory epidemiology is an emerging field harnessing consumer data entries of symptoms. The free app Ada allows users to enter the symptoms they are experiencing and applies a probabilistic reasoning model to provide a list of possible causes for these symptoms. Objective The objective of our study is to explore the potential contribution of Ada data to syndromic surveillance by comparing symptoms of influenza-like illness (ILI) entered by Ada users in Germany with data from a national population-based reporting system called GrippeWeb. Methods We extracted data for all assessments performed by Ada users in Germany over 3 seasons (2017/18, 2018/19, and 2019/20) and identified those with ILI (report of fever with cough or sore throat). The weekly proportion of assessments in which ILI was reported was calculated (overall and stratified by age group), standardized for the German population, and compared with trends in ILI rates reported by GrippeWeb using time series graphs, scatterplots, and Pearson correlation coefficient. Results In total, 2.1 million Ada assessments (for any symptoms) were included. Within seasons and across age groups, the Ada data broadly replicated trends in estimated weekly ILI rates when compared with GrippeWeb data (Pearson correlation—2017-18: r=0.86, 95% CI 0.76-0.92; P<.001; 2018-19: r=0.90, 95% CI 0.84-0.94; P<.001; 2019-20: r=0.64, 95% CI 0.44-0.78; P<.001). However, there were differences in the exact timing and nature of the epidemic curves between years. Conclusions With careful interpretation, Ada data could contribute to identifying broad ILI trends in countries without existing population-based monitoring systems or to the syndromic surveillance of symptoms not covered by existing systems.
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Gilbert S, Mehl A, Baluch A, Cawley C, Challiner J, Fraser H, Millen E, Montazeri M, Multmeier J, Pick F, Richter C, Türk E, Upadhyay S, Virani V, Vona N, Wicks P, Novorol C. How accurate are digital symptom assessment apps for suggesting conditions and urgency advice? A clinical vignettes comparison to GPs. BMJ Open 2020; 10:e040269. [PMID: 33328258 PMCID: PMC7745523 DOI: 10.1136/bmjopen-2020-040269] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVES To compare breadth of condition coverage, accuracy of suggested conditions and appropriateness of urgency advice of eight popular symptom assessment apps. DESIGN Vignettes study. SETTING 200 primary care vignettes. INTERVENTION/COMPARATOR For eight apps and seven general practitioners (GPs): breadth of coverage and condition-suggestion and urgency advice accuracy measured against the vignettes' gold-standard. PRIMARY OUTCOME MEASURES (1) Proportion of conditions 'covered' by an app, that is, not excluded because the user was too young/old or pregnant, or not modelled; (2) proportion of vignettes with the correct primary diagnosis among the top 3 conditions suggested; (3) proportion of 'safe' urgency advice (ie, at gold standard level, more conservative, or no more than one level less conservative). RESULTS Condition-suggestion coverage was highly variable, with some apps not offering a suggestion for many users: in alphabetical order, Ada: 99.0%; Babylon: 51.5%; Buoy: 88.5%; K Health: 74.5%; Mediktor: 80.5%; Symptomate: 61.5%; Your.MD: 64.5%; WebMD: 93.0%. Top-3 suggestion accuracy was GPs (average): 82.1%±5.2%; Ada: 70.5%; Babylon: 32.0%; Buoy: 43.0%; K Health: 36.0%; Mediktor: 36.0%; Symptomate: 27.5%; WebMD: 35.5%; Your.MD: 23.5%. Some apps excluded certain user demographics or conditions and their performance was generally greater with the exclusion of corresponding vignettes. For safe urgency advice, tested GPs had an average of 97.0%±2.5%. For the vignettes with advice provided, only three apps had safety performance within 1 SD of the GPs-Ada: 97.0%; Babylon: 95.1%; Symptomate: 97.8%. One app had a safety performance within 2 SDs of GPs-Your.MD: 92.6%. Three apps had a safety performance outside 2 SDs of GPs-Buoy: 80.0% (p<0.001); K Health: 81.3% (p<0.001); Mediktor: 87.3% (p=1.3×10-3). CONCLUSIONS The utility of digital symptom assessment apps relies on coverage, accuracy and safety. While no digital tool outperformed GPs, some came close, and the nature of iterative improvements to software offers scalable improvements to care.
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Affiliation(s)
| | | | | | | | | | - Hamish Fraser
- Brown Center for Biomedical Informatics, Brown University, Rhode Island, USA
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Mehl A, Bergey F, Cawley C, Gilsdorf A. Syndromic Surveillance Insights from a Symptom Assessment App Before and During COVID-19 Measures in Germany and the United Kingdom: Results From Repeated Cross-Sectional Analyses. JMIR Mhealth Uhealth 2020; 8:e21364. [PMID: 32997640 PMCID: PMC7561445 DOI: 10.2196/21364] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/15/2020] [Accepted: 09/15/2020] [Indexed: 12/23/2022] Open
Abstract
Background Unprecedented lockdown measures have been introduced in countries worldwide to mitigate the spread and consequences of COVID-19. Although attention has been focused on the effects of these measures on epidemiological indicators relating directly to the infection, there is increased recognition of their broader health implications. However, assessing these implications in real time is a challenge, due to the limitations of existing syndromic surveillance data and tools. Objective The aim of this study is to explore the added value of mobile phone app–based symptom assessment tools as real-time health insight providers to inform public health policy makers. Methods A comparative and descriptive analysis of the proportion of all self-reported symptoms entered by users during an assessment within the Ada app in Germany and the United Kingdom was conducted between two periods, namely before and after the implementation of “Phase One” COVID-19 measures. Additional analyses were performed to explore the association between symptom trends and seasonality, and symptom trends and weather. Differences in the proportion of unique symptoms between the periods were analyzed using a Pearson chi-square test and reported as log2 fold changes. Results Overall, 48,300-54,900 symptomatic users reported 140,500-170,400 symptoms during the Baseline and Measures periods in Germany. Overall, 34,200-37,400 symptomatic users in the United Kingdom reported 112,100-131,900 symptoms during the Baseline and Measures periods. The majority of symptomatic users were female (Germany: 68,600/103,200, 66.52%; United Kingdom: 51,200/71,600, 72.74%). The majority were aged 10-29 years (Germany: 68,500/100,000, 68.45%; United Kingdom: 50,900/68,800, 73.91%), and about one-quarter were aged 30-59 years (Germany: 26,200/100,000, 26.15%; United Kingdom: 14,900/68,800, 21.65%). Overall, 103 symptoms were reported either more or less frequently (with statistically significant differences) during the Measures period as compared to the Baseline period, and 34 of these were reported in both countries. The following mental health symptoms (log2 fold change, P value) were reported less often during the Measures period: inability to manage constant stress and demands at work (–1.07, P<.001), memory difficulty (–0.56, P<.001), depressed mood (–0.42, P<.001), and impaired concentration (–0.46, P<.001). Diminished sense of taste (2.26, P<.001) and hyposmia (2.20, P<.001) were reported more frequently during the Measures period. None of the 34 symptoms were found to be different between the same dates in 2019. In total, 14 of the 34 symptoms had statistically significant associations with weather variables. Conclusions Symptom assessment apps have an important role to play in facilitating improved understanding of the implications of public health policies such as COVID-19 lockdown measures. Not only do they provide the means to complement and cross-validate hypotheses based on data collected through more traditional channels, they can also generate novel insights through a real-time syndromic surveillance system.
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Affiliation(s)
- Alicia Mehl
- Department of Epidemiology & Public Health, Ada Health GmbH, Berlin, Germany
| | - Francois Bergey
- Department of Epidemiology & Public Health, Ada Health GmbH, Berlin, Germany
| | - Caoimhe Cawley
- Department of Epidemiology & Public Health, Ada Health GmbH, Berlin, Germany
| | - Andreas Gilsdorf
- Department of Epidemiology & Public Health, Ada Health GmbH, Berlin, Germany
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Mehl A, Brauer D, Didwiszus A, Gelin-Kröz B, Pranga D, Zerm R, Gutenbrunner C, Reif M, Kröz M. The Anthroposophic Art Therapy Assessment Paint (AART-ASSESS-P): A peer-report instrument to assess patients' pictorial expression during Anthroposophic Painting Therapy. Explore (NY) 2020; 17:541-548. [PMID: 32843248 DOI: 10.1016/j.explore.2020.07.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 06/26/2020] [Accepted: 07/26/2020] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Anthroposophic painting therapy (APT) is a specific form of art therapy that aims to activate self-healing capacities through painting aquarelles. METHODS The Anthroposophic Art Therapy Assessment-Paint' (AART-ASSESS-P) was developed to measure pictorial expression and validated in the framework of a comprehensive cohort design study. The validation study examined 68 breast cancer patients with fatigue. Art therapists made pre- and post-assessments of spontaneously drawn water-color paintings with a preliminary version of the AART-ASSESS-P (58 items). Inter-rater reliability (IRR) for the items was examined with Cohen's weighted Kappa (κw). Additionally, a reliability- and factor analysis (FA) were conducted. Convergence criteria were patients' self-report measures: the Satisfaction with Painting Therapy, Inner Correspondence with Painting Therapy and the Self-Regulation Questionnaire. RESULTS IRR for the items was heterogeneous (κw= 0.09-0.89, Mean κw= 0.40, SD = 0.17). Thirty-six items were excluded due to insufficient IRR and item-total correlation (κw= < 0.30, ρitem-total< 0.30). A FA with 22 items revealed 5 subscales: Shape Development (6 items), Shape Arrangement (6 items), Order and Symmetry (5 items), Color Application (3 items), and Color Quality (2 items) explaining 61% of total variance. Psychometric properties for the AART-ASSESS-P were satisfying with Cronbach's alpha coefficients (rα = 0.60-0.81) across subscales. Due to weak inter-subscale correlations (r = 0.18-0.48, p < 0.05) and the ambiguity of face validity a sum-score was not formed. Correlations between subscales and self-reports were small (all p < 0.05). CONCLUSION The AART-ASSESS-P is the first reliable instrument to measure pictorial expression during APT.
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Affiliation(s)
- A Mehl
- Research Institute Havelhöhe, Kladower Damm 221, 14089Berlin, Germany.
| | - D Brauer
- Medical Section, School of Spiritual Science/Goetheanum, 4134Dornach, Switzerland
| | - A Didwiszus
- Department of Internal Medicine Havelhöhe Hospital, Kladower Damm 221, 14089Berlin, Germany
| | - B Gelin-Kröz
- Research Institute Havelhöhe, Kladower Damm 221, 14089Berlin, Germany
| | - D Pranga
- Research Institute Havelhöhe, Kladower Damm 221, 14089Berlin, Germany
| | - R Zerm
- Research Institute Havelhöhe, Kladower Damm 221, 14089Berlin, Germany; Department of Internal Medicine Havelhöhe Hospital, Kladower Damm 221, 14089Berlin, Germany
| | - C Gutenbrunner
- Clinic for Rehabilitative Medicine, Hannover Medical School, Carl-Neuberg-Straße 1, 30625Hannover, Germany
| | - M Reif
- Society for Clinical Research, Hardenbergstraße 20, 10623Berlin, Germany
| | - M Kröz
- Research Institute Havelhöhe, Kladower Damm 221, 14089Berlin, Germany; Institute for Integrative Medicine, University Witten/Herdecke, Gerhard Kienle Weg 8, 58313Herdecke, Germany; Hospital Arlesheim, Research Department, Pfeffinger Weg 1, 4144Arlesheim, Switzerland
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Zimmermann M, Ender A, Mehl A. Influence of CAD/CAM Fabrication and Sintering Procedures on the Fracture Load of Full-Contour Monolithic Zirconia Crowns as a Function of Material Thickness. Oper Dent 2019; 45:219-226. [PMID: 31738694 DOI: 10.2341/19-086-l] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE The purpose of this in vitro study was to analyze the effect of computer-aided design/computer-aided manufacturing (CAD/CAM) fabrication and sintering procedures on the fracture load of monolithic zirconia crowns with different material thicknesses adhesively seated to methacrylate dies fabricated with stereolithography technology. METHOD Monolithic zirconia crowns were fabricated from inCoris TZI C material with a chairside CAD/CAM system (CEREC MCXL) comprising three material thicknesses (0.5/1.0/1.5 mm, n=8 each). Two CAD/CAM fabrication procedures (milling, MI; grinding, GR), two chairside sintering procedures (superspeed, SS; speedfire sintering, SF), and one labside sintering procedure (classic, CL) were evaluated. In total, 144 crowns were fabricated. Restorations were adhesively seated to methacrylate dies fabricated with SLA technology. Thermomechanical cycling (TCML) was performed before fracture testing. Loading forces until fracture were registered and statistically analyzed with one-way analysis of variance (ANOVA), post hoc Scheffé test, and three-way ANOVA (α=0.05). RESULTS Test groups showed statistically significant differences (p<0.05). The highest mean value was found for 1.5-mm crowns of group GR_SF with 3678.6 ± 363.9 N. The lowest mean value was found for group 0.5-mm crowns of group MI_SF with 382.4 ± 30.7 N. There was a significant three-way interaction effect between thickness, sintering, and processing [F(4,126)=9.542; p<0.001; three-way ANOVA, significance level α=0.05]. CONCLUSIONS CAD/CAM fabrication and sintering procedures influence the maximum loading force of monolithic zirconia crowns with different material thicknesses. A material thickness of 0.5 mm should be considered as a critical thickness for monolithic zirconia crown restorations.
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Holz F, Kallinich T, Röhmel J, Eschenhagen P, Mehl A, Staab D, Kaufmann S, Gräber S, Mall M, Schwarz C. WS17-1 Prospective evaluation of arthropathy in patients with cystic fibrosis. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30217-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Eschenhagen P, Bacher P, Kaufmann S, Rickerts V, Seidel K, Röhmel J, Mehl A, Staab D, Gräber S, Holz F, Scheffold A, Mall M, Schwarz C. P165 Prospective evaluation of Aspergillus fumigatus-specific IgG in patients with cystic fibrosis. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30459-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kröz M, Mehl A, Didwiszus A, Gelin-Kröz B, Reif M, Berger B, Ten Brink F, Zerm R, Girke M, Gutenbrunner C, Büssing A. Reliability and first validity of the inner correspondence questionnaire for painting therapy (ICPTh) in a sample of breast cancer patients. Complement Ther Med 2019; 42:355-360. [PMID: 30670266 DOI: 10.1016/j.ctim.2018.12.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 12/04/2018] [Accepted: 12/04/2018] [Indexed: 01/31/2023] Open
Abstract
Objectives Art therapy (ArT) such as mindfulness-oriented painting therapy is increasingly used in psychosomatic, oncological integrative and rehabilitative medicine. Though it remains unknown how ArT works, we hypothesize that an engaged participation with painting ('Inner-Correspondence') contributes to improved symptom scores. In the context of a comprehensive cohort study for breast cancer survivors with cancer-related fatigue, we developed a patient-reported outcome measure to assess 'Inner Correspondence' with painting therapy and conducted a first validation study. Design A 24-item questionnaire on 'Inner Correspondence' (ICPTh) was administered after ten weeks of intervention and at six month followup together with concurrent scales (Inner Correspondence and Peaceful Harmony, Cancer Fatigue Scale, Hospital Anxiety and Depression Scale, Internal Coherence Scale). Statistical assessment included reliability- and factor analyses. Results A total of n = 68 BC (mean age, 58.2 years, SD = 8.7) participated in the preliminary validation study. Exploratory factor analysis revealed a robust 22-item scale with an unambiguous four-factor solution explaining 78% of total variance and the following subsales: 1) therapy congruence and relaxation (11 items), 2) inner development and mood (6 items), 3) artistic skill (3 items) and 4) task congruence (2 items). The 22-item ICPTh yielded high reliability (Cronbach's alpha = .966, item-total correlation = .497 - .883, test-retest reliability = .888). Conclusions We present a reliable instrument to measure 'Inner Correspondence' with painting therapy. Due to the small sample size and sample selection further validation studies are indicated.
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Affiliation(s)
- M Kröz
- Department of Internal Medicine Havelhöhe Hospital, Kladower Damm 221, 14089 Berlin, Germany; Research Institute Havelhöhe, Kladower Damm 221, 14089, Berlin, Germany; Institute for Social Medicine, Epidemiology and Health Economics, Charité Universitätsmedizin Berlin, Luisenstraße 57, 10117, Berlin, Germany; Institute of Integrative Medicine, Witten/Herdecke University, Alfred-Herrhausen-Straße 50, 58448, Witten, Germany.
| | - A Mehl
- Research Institute Havelhöhe, Kladower Damm 221, 14089, Berlin, Germany.
| | - A Didwiszus
- Department of Internal Medicine Havelhöhe Hospital, Kladower Damm 221, 14089 Berlin, Germany; Research Institute Havelhöhe, Kladower Damm 221, 14089, Berlin, Germany.
| | - B Gelin-Kröz
- Department of Internal Medicine Havelhöhe Hospital, Kladower Damm 221, 14089 Berlin, Germany; Research Institute Havelhöhe, Kladower Damm 221, 14089, Berlin, Germany.
| | - M Reif
- Society for Clinical Research, Hardenbergstraße 19, 10623, Berlin, Germany.
| | - B Berger
- Institute of Integrative Medicine, Witten/Herdecke University, Alfred-Herrhausen-Straße 50, 58448, Witten, Germany.
| | - F Ten Brink
- Clinic for Rehabilitative Medicine, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany.
| | - R Zerm
- Department of Internal Medicine Havelhöhe Hospital, Kladower Damm 221, 14089 Berlin, Germany; Research Institute Havelhöhe, Kladower Damm 221, 14089, Berlin, Germany.
| | - M Girke
- Department of Internal Medicine Havelhöhe Hospital, Kladower Damm 221, 14089 Berlin, Germany; Research Institute Havelhöhe, Kladower Damm 221, 14089, Berlin, Germany.
| | - C Gutenbrunner
- Clinic for Rehabilitative Medicine, Hannover Medical School, Carl-Neuberg-Straße 1, 30625, Hannover, Germany.
| | - A Büssing
- Institute of Integrative Medicine, Witten/Herdecke University, Alfred-Herrhausen-Straße 50, 58448, Witten, Germany.
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Abstract
SUMMARY
Clinical Relevance:
Accurate reproduction of the jaw relationship is important in many fields of dentistry. Maximum intercuspation can be registered with digital buccal scan procedures implemented in the workflow of many intraoral scanning systems.
Objective:
The aim of this study was to investigate the accuracy of buccal scan procedures with intraoral scanning devices for the registration of habitual intercuspation in vivo. The hypothesis was that there is no statistically significant difference for buccal scan procedures compared to registration methods with poured model casts.
Methods and Materials:
Ten individuals (full dentition, no dental rehabilitations) were subjects for five different habitual intercuspation registration methods: (CI) poured model casts, manual hand registration, buccal scan with inEOS X5; (BC) intraoral scan, buccal scan with CEREC Bluecam; (OC4.2) intraoral scan, buccal scan with CEREC Omnicam software version 4.2; (OC4.5β) intraoral scan, buccal scan with CEREC Omnicam version 4.5β; and (TR) intraoral scan, buccal scan with Trios 3. Buccal scan was repeated three times. Analysis of rotation (Rot) and translation (Trans) parameters was performed with difference analysis software (OraCheck). Statistical analysis was performed with one-way analysis of variance and the post hoc Scheffé test (p<0.05).
Results:
Statistical analysis showed no significant (p>0.05) differences in terms of translation between groups CI_Trans (98.74±112.01 μm), BC_Trans (84.12±64.95 μm), OC4.2_Trans (60.70±35.08 μm), OC4.5β_Trans (68.36±36.67 μm), and TR_Trans (66.60±64.39 μm). For rotation, there were no significant differences (p>0.05) for groups CI_Rot (0.23±0.25°), BC_Rot (0.73±0.52°), OC4.2_Rot (0.45±0.31°), OC4.5β_Rot (0.50±0.36°), and TR_Rot (0.47±0.65°).
Conclusions:
Intraoral scanning devices allow the reproduction of the static relationship of the maxillary and mandibular teeth with the same accuracy as registration methods with poured model casts.
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Affiliation(s)
- M Zimmermann
- Moritz Zimmermann, Dr. med. dent., Center of Dental Medicine, Department of Computerized Restorative Dentistry, University of Zurich, Zurich, Switzerland
| | - A Ender
- Andreas Ender, Dr. med. dent., Center of Dental Medicine, Department of Computerized Restorative Dentistry, University of Zurich, Zurich, Switzerland
| | - T Attin
- Thomas Attin, Prof. Dr. med. dent., Center of Dental Medicine, Clinic of Preventive Dentistry, Periodontology and Cariology, University of Zurich, Zurich, Switzerland
| | - A Mehl
- Albert Mehl, Prof. Dr. rer. nat. Dr. med. dent., Center of Dental Medicine, Department of Computerized Restorative Dentistry, University of Zurich, Zurich, Switzerland
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Mehl A, Solle D, Bahnemann J, Scheper T. Produktaufreinigung und Produktanalytik in der Tierzellkultivierung. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201855338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- A. Mehl
- Leibniz Universität Hannover; Institut für Technische Chemie; Callinstraße 5 30167 Hannover Deutschland
| | - D. Solle
- Leibniz Universität Hannover; Institut für Technische Chemie; Callinstraße 5 30167 Hannover Deutschland
| | - J. Bahnemann
- Leibniz Universität Hannover; Institut für Technische Chemie; Callinstraße 5 30167 Hannover Deutschland
| | - T. Scheper
- Leibniz Universität Hannover; Institut für Technische Chemie; Callinstraße 5 30167 Hannover Deutschland
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Zimmermann M, Valcanaia A, Neiva G, Mehl A, Fasbinder D. Influence of Different CAM Strategies on the Fit of Partial Crown Restorations: A Digital Three-dimensional Evaluation. Oper Dent 2018; 43:530-538. [DOI: 10.2341/17-130-l] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
ABSTRACT
Objective:
CAM fabrication is an important step within the CAD/CAM process. The internal fit of restorations is influenced by the accuracy of the subtractive CAM procedure. Little is known about how CAM strategies might influence the fit of CAD/CAM fabricated restorations. The aim of this study was to three-dimensionally evaluate the fit of CAD/CAM fabricated zirconia-reinforced lithium silicate ceramic partial crowns fabricated with three different CAM strategies. The null hypothesis was that different CAM strategies did not influence the fitting accuracy of CAD/CAM fabricated zirconia-reinforced lithium silicate ceramic partial crowns.
Methods and Materials:
Preparation for a partial crown was performed on a maxillary right first molar on a typodont. A chairside CAD/CAM system with the intraoral scanning device CEREC Omnicam (Dentsply Sirona, York, PA, USA) and the 3+1 axis milling unit CEREC MCXL was used. There were three groups with different CAM strategies: step bur 12 (12), step bur 12S (12S), and two step-mode (12TWO). The zirconia-reinforced lithium silicate ceramic Celtra Duo (Dentsply Sirona) was used as the CAD/CAM material. A new 3D method for evaluating the fit was applied, consisting of the quadrant scan with the intraoral scanning device CEREC Omnicam. The scan of the PVS material adherent to the preparation and the preparation scan were matched, and the difference analysis was performed with special software OraCheck (Cyfex AG, Zurich, Switzerland). Three areas were selected for analysis: margin (MA), axial (AX), and occlusal (OC). Statistical analysis was performed using 80% percentile, one-way ANOVA, and the post hoc Scheffé test with α=0.05.
Results:
Statistically significant differences were found both within and between the test groups. The aspect axial fit results varied from 90.5 ± 20.1 μm for the two-step milling mode (12TWO_AX) to 122.8 ± 12.2 μm for the milling with step bur 12S (12S_AX). The worst result in all groups was found for the aspect occlusal fit with the highest value for group 12S of 222.8 ± 35.6 μm. Group two-step milling mode (12TWO) performed statistically significantly better from groups 12 and 12S for the occlusal fit (p<0.05). Deviation patterns were visually analyzed with a color-coded scheme for each restoration.
Conclusions:
CAM strategy influenced the internal adaptation of zirconia-reinforced lithium silicate partial crowns fabricated with a chairside CAD/CAM system. Sensible selection of specific areas of internal adaptation and fit is an important factor for evaluating the CAM accuracy of CAD/CAM systems.
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Affiliation(s)
- M Zimmermann
- Moritz Zimmermann, Dr. med. dent., Center of Dental Medicine, Department of Computerized Restorative Dentistry, University of Zurich, Zurich, Switzerland, and visiting professor, Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - A Valcanaia
- Andre Valcanaia, DDS, Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - G Neiva
- Gisele Neiva, DDS, MS, MS, clinical associate professor, Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - A Mehl
- Albert Mehl, Prof. Dr. med. dent. Dr. rer. nat., Center of Dental Medicine, Department of Computerized Restorative Dentistry, University of Zurich, Zurich, Switzerland
| | - D Fasbinder
- Dennis Fasbinder, DDS, clinical professor, Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
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Cole CB, Pacca J, Mehl A, Tomasulo A, van der Veken L, Viola A, Ridde V. Toward communities as systems: a sequential mixed methods study to understand factors enabling implementation of a skilled birth attendance intervention in Nampula Province, Mozambique. Reprod Health 2018; 15:132. [PMID: 30075791 PMCID: PMC6091088 DOI: 10.1186/s12978-018-0574-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 07/23/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Skilled birth attendance, institutional deliveries, and provision of quality, respectful care are key practices to improve maternal and neonatal health outcomes. In Mozambique, the government has prioritized improved service delivery and demand for these practices, alongside "humanization of the birth process." An intervention implemented in Nampula province beginning in 2009 saw marked improvement in institutional delivery rates. This study uses a sequential explanatory mixed methods case study design to explore the contextual factors that may have contributed to the observed increase in institutional deliveries. METHODS A descriptive time series analysis was conducted using clinic register data from 2009 to 2014 to assess institutional delivery coverage rates in two primary health care facilities, in two districts of Nampula province. Site selection was based on facilities exhibiting an initial increase in institutional deliveries from 2009 to 2011, similarity of health system attributes, and accessibility for study participation. Using a modified Delphi technique, two expert panels-each composed of ten stakeholders familiar with maternal health implementation at facility, district, provincial, and national levels-were convened to formulate the "story" of the implementation and to identify contextual factors to use in developing semi-structured interview guides. Thirty-four key informant interviews with facility MCH nurses, facility managers, traditional birth attendants, community leaders, and beneficiaries were then conducted and analyzed using the Consolidated Framework for Implementation Research through inductive and deductive coding. RESULTS The two sites' skilled birth attendance coverage of estimated live births reached 80 and 100%, respectively. Eight contextual and human factors were found as dominant themes. Though both sites achieved increases, implementation context differed significantly with compelling examples of both respectful and disrespectful care. In one site, facility and community actors worked together as complementary systems to sustain improved care and institutional deliveries. In the other, community actors sustained implementation and institutional deliveries largely in absence of health system counterparts. CONCLUSION Findings support global health recommendations for combined health system and community interventions for improved MNH outcomes including delivery of respectful care, and further suggest the capacity of communities to act as systems both in partnership to and independent of the formal health system.
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Affiliation(s)
- Claire B. Cole
- Population Services International, 1120 19th St NW Suite 600, Washington, DC 20036 USA
| | - Julio Pacca
- Population Services International, 1120 19th St NW Suite 600, Washington, DC 20036 USA
| | - Alicia Mehl
- Population Services International, 1120 19th St NW Suite 600, Washington, DC 20036 USA
| | - Anna Tomasulo
- Pathfinder International, 9 Galen Street, Suite 217, Watertown, MA 02472 USA
| | - Luc van der Veken
- Pathfinder International Mozambique, 135 Rua Eca De Queiros, Maputo, Mozambique
| | - Adalgisa Viola
- Pathfinder International Mozambique, 135 Rua Eca De Queiros, Maputo, Mozambique
| | - Valéry Ridde
- IRD (French Institute for Research on Sustainable Development), CEPED (IRD-Université Paris Descartes), Universités Paris Sorbonne Cités, ERL INSERM SAGESUD, Paris, France
- University of Montreal Public Health Research Institute (IRSPUM), Montreal, Canada
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Kaufmann S, Brandt C, Barthel N, Roehmel J, Holz F, Eschenhagen P, Mehl A, Meinus C, Staab D, Rickerts V, Seidel K, Bacher P, Hohnstein T, Scheffold A, Schwarz C. P065 Berlin Aspergillus Species Study - pet ownership is a risk factor for ABPA in patients with cystic fibrosis. J Cyst Fibros 2018. [DOI: 10.1016/s1569-1993(18)30362-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Kaufmann S, Brandt C, Nadine B, Roehmel J, Holz F, Eschenhagen P, Mehl A, Meinus C, Staab D, Rickerts V, Seidel K, Bacher P, Hohnstein T, Scheffold A, Schwarz C. P064 Clinical and immunological results of the Berlin Aspergillus Species Study (BASS). J Cyst Fibros 2018. [DOI: 10.1016/s1569-1993(18)30361-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Schwarz C, Schulte-Hubbert B, Bend J, Abele-Horn M, Baumann I, Bremer W, Brunsmann F, Dieninghoff D, Eickmeier O, Ellemunter H, Fischer R, Grosse-Onnebrink J, Hammermann J, Hebestreit H, Hogardt M, Hügel C, Hug M, Illing S, Jung A, Kahl B, Koitschev A, Mahlberg R, Mainz JG, Mattner F, Mehl A, Möller A, Muche-Borowski C, Nüßlein T, Puderbach M, Renner S, Rietschel E, Ringshausen FC, Schmidt S, Sedlacek L, Sitter H, Smaczny C, Tümmler B, Vonberg R, Wielpütz MO, Wilkens H, Wollschläger B, Zerlik J, Düesberg U, van Koningsbruggen-Rietschel S. [CF Lung Disease - a German S3 Guideline: Module 2: Diagnostics and Treatment in Chronic Infection with Pseudomonas aeruginosa]. Pneumologie 2018; 72:347-392. [PMID: 29758578 DOI: 10.1055/s-0044-100191] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Cystic Fibrosis (CF) is the most common autosomal-recessive genetic disease affecting approximately 8000 people in Germany. The disease is caused by mutations in the Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) gene leading to dysfunction of CFTR, a transmembrane chloride channel. This defect causes insufficient hydration of the epithelial lining fluid which leads to chronic inflammation of the airways. Recurrent infections of the airways as well as pulmonary exacerbations aggravate chronic inflammation, lead to pulmonary fibrosis and tissue destruction up to global respiratory insufficiency, which is responsible for the mortality in over 90 % of patients. The main aim of pulmonary treatment in CF is to reduce pulmonary inflammation and chronic infection. Pseudomonas aeruginosa (Pa) is the most relevant pathogen in the course of CF lung disease. Colonization and chronic infection are leading to additional loss of pulmonary function. There are many possibilities to treat Pa-infection. This is a S3-clinical guideline which implements a definition for chronic Pa-infection and demonstrates evidence-based diagnostic methods and medical treatment for Pa-infection in order to give guidance for individual treatment options.
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Affiliation(s)
- C Schwarz
- Charité - Universitätsmedizin Berlin, Klinik für Pädiatrie mit Schwerpunkt Pneumologie, Immunologie und Intensivmedizin, Christiane Herzog Zentrum, Berlin
| | - B Schulte-Hubbert
- Medizinische Klinik und Poliklinik I, Pneumologie, Universitätsklinikum Dresden
| | - J Bend
- Mukoviszidose Institut, Bonn
| | - M Abele-Horn
- Universität Würzburg, Institut für Hygiene und Mikrobiologie
| | - I Baumann
- Universität Heidelberg, Hals-Nasen-Ohrenklinik, Heidelberg
| | | | - F Brunsmann
- Charité Universitätsmedizin Berlin, Deutschland (Patientenvertreter)
| | - D Dieninghoff
- Kliniken der Stadt Köln, Lungenklinik, Lehrstuhl der Universität Witten Herdecke
| | - O Eickmeier
- Klinikum der Johann Wolfgang Goethe-Universität Frankfurt am Main, Christiane Herzog CF-Zentrum, Frankfurt
| | - H Ellemunter
- Tirolkliniken GmbH, Department für Kinderheilkunde Pädiatrie III, Innsbruck, Österreich
| | - R Fischer
- Zentrum für erwachsene Mukoviszidose-Patienten München-West
| | - J Grosse-Onnebrink
- Universitätsklinikum Münster UKM; Klinik für Kinder- und Jugendmedizin; Allgemeine Pädiatrie Mukoviszidose-Ambulanz, Münster
| | - J Hammermann
- Universitäts-Mukoviszidose-Zentrum "Christiane Herzog", Dresden
| | | | - M Hogardt
- Klinikum der Johann Wolfgang Goethe-Universität Frankfurt am Main, Institut für Medizinische Mikrobiologie und Krankenhaushygiene, Frankfurt
| | - C Hügel
- Klinikum der Johann Wolfgang Goethe-Universität Frankfurt am Main, Zentrum der Inneren Medizin, Frankfurt, Deutschland
| | - M Hug
- Universitätsklinikum Freiburg, Apotheke des Klinikums Freiburg
| | - S Illing
- Olgahospital - Kinderklinik - CF-Zentrum/Jugendliche/Erwachsene Stuttgart
| | - A Jung
- Kinderspital Zürich, Abteilung Pneumologie, Zürich, Schweiz
| | - B Kahl
- Universitätsklinikum Münster UKM, Institut für Medizinische Mikrobiologie, Münster
| | - A Koitschev
- Klinikum Stuttgart - Standort Olgahospital, Klinik für Hals-Nasen-Ohrenkrankheiten, Stuttgart
| | - R Mahlberg
- Klinikum Mutterhaus der Borromäerinnen, Abteilung Innere Medizin, Trier
| | - J G Mainz
- Universitätsklinikum Jena, Mukoviszidosezentrum/Pädiatrische Pneumologie, Jena
| | - F Mattner
- Kliniken der Stadt Köln, Institut für Hygiene, Köln
| | - A Mehl
- Charité - Universitätsmedizin Berlin, Klinik für Pädiatrie mit Schwerpunkt Pneumologie, Immunologie und Intensivmedizin, Christiane Herzog Zentrum, Berlin
| | - A Möller
- Pneumologie und CF Ambulanz der Universitäts-Kinderklinik Zürich, Schweiz
| | - C Muche-Borowski
- Philipps-Universität Marburg, AWMF-Institut für Medizinisches Wissensmanagement, Marburg und Universitätsklinikum Hamburg-Eppendorf, Institut und Poliklinik für Allgemeinmedizin, Hamburg
| | - T Nüßlein
- Gemeinschaftsklinikum Mittelrhein, Klinik für Kinder- und Jugendmedizin Koblenz und Mayen
| | - M Puderbach
- Hufeland Klinikum, Abteilung für Diagnostische und Interventionelle Radiologie, Bad Langensalza
| | - S Renner
- Allgemeines Universitätskrankenhaus, Klinik für Kinder- und Jugendheilkunde, CF Ambulanz, Wien, Österreich
| | - E Rietschel
- Mukoviszidose-Zentrum Köln, Klinik und Poliklinik für Kinder- und Jugendmedizin, Universität zu Köln
| | - F C Ringshausen
- Medizinische Hochschule Hannover, Klinik für Pneumologie und Deutsches Zentrum für Lungenforschung (DZL), Hannover
| | - S Schmidt
- Ernst-Moritz-Arndt Universität Greifswald, Zentrum für Kinder- und Jugendmedizin; Mukoviszidose Zentrum Mecklenburg/Vorpommern, Greifswald
| | - L Sedlacek
- Medizinische Hochschule Hannover, Institut für Medizinische Mikrobiologie und Krankenhaushygiene, Hannover
| | - H Sitter
- Philipps-Universität Marburg, Institut für theoretische Medizin, Marburg
| | - C Smaczny
- Klinikum der Johann Wolfgang Goethe-Universität Frankfurt am Main, Zentrum der Inneren Medizin, Frankfurt, Deutschland
| | - B Tümmler
- Medizinische Hochschule Hannover, Klinische Forschergruppe OE 6710, Klinik für Pädiatrische Pneumologie und Neonatologie
| | - R Vonberg
- Medizinische Hochschule Hannover, Institut für Medizinische Mikrobiologie und Krankenhaushygiene, Hannover
| | - M O Wielpütz
- Diagnostische und Interventionelle Radiologie Universitätsklinikum Heidelberg, Heidelberg
| | - H Wilkens
- Universitätsklinikum des Saarlandes, Medizinische Klinik V, Pneumologie, Allergologie und Beatmungsmedizin, Homburg
| | - B Wollschläger
- Martin-Luther-Universität Halle, Universitätsklinik und Poliklinik für Innere Medizin I/Pneumologie, Halle
| | - J Zerlik
- Altonaer Kinderkrankenhaus gGmbH, Abteilung Physiotherapie, Hamburg
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Scholz O, Denecke T, Böttcher J, Schwarz C, Mentzel HJ, Streitparth F, Maurer MH, Pfeil A, Huppertz A, Mehl A, Staab D, Hamm B, Renz DM. MRI of cystic fibrosis lung manifestations: sequence evaluation and clinical outcome analysis. Clin Radiol 2017; 72:754-763. [PMID: 28545684 DOI: 10.1016/j.crad.2017.03.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 01/19/2017] [Accepted: 03/20/2017] [Indexed: 11/17/2022]
Abstract
AIM To evaluate different magnetic resonance imaging (MRI) sequences for diagnosis of pulmonary manifestations of cystic fibrosis (CF) in comparison to chest computed tomography (CT), including an extended outcome analysis. MATERIALS AND METHODS Twenty-eight patients with CF (15 male, 13 female, mean age 30.5±9.4 years) underwent CT and MRI of the lung. MRI (1.5 T) included different T2- and T1-weighted sequences: breath-hold HASTE (half Fourier acquisition single shot turbo spin echo) and VIBE (volumetric interpolated breath-hold examination, before and after contrast medium administration) sequences and respiratory-triggered PROPELLER (periodically rotated overlapping parallel lines with enhanced reconstruction) sequences with and without fat signal suppression, and perfusion imaging. CT and MRI images were evaluated by the modified Helbich and the Eichinger scoring systems. The clinical follow-up analysis assessed pulmonary exacerbations within 24 months. RESULTS The highest concordance to CT was achieved for the PROPELLER sequences without fat signal suppression (concordance correlation coefficient CCC of the overall modified Helbich score 0.93 and of the overall Eichinger score 0.93). The other sequences had the following concordance: PROPELLER with fat signal suppression (CCCs 0.91 and 0.92), HASTE (CCCs 0.87 and 0.89), VIBE (CCCs 0.84 and 0.85) sequences. In the outcome analysis, the combined MRI analysis of all five sequences and a specific MRI protocol (PROPELLER without fast signal suppression, VIBE sequences, perfusion imaging) reached similar correlations to the number of pulmonary exacerbations as the CT examinations. CONCLUSION An optimum lung MRI protocol in patients with CF consists of PROPELLER sequences without fat signal suppression, VIBE sequences, and lung perfusion analysis to enable high diagnostic efficacy and outcome prediction.
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Affiliation(s)
- O Scholz
- Department of Radiology, Charité University Medicine Berlin, Campus Virchow Clinic, Augustenburger Platz 1, 13353 Berlin, Germany
| | - T Denecke
- Department of Radiology, Charité University Medicine Berlin, Campus Virchow Clinic, Augustenburger Platz 1, 13353 Berlin, Germany
| | - J Böttcher
- Institute of Diagnostic and Interventional Radiology, SRH Clinic Gera, Str. des Friedens 122, 07548 Gera, Germany
| | - C Schwarz
- Division of Pulmonology and Immunology, Department of Pediatrics, Charité University Medicine Berlin, Campus Virchow Clinic, Augustenburger Platz 1, 13353 Berlin, Germany
| | - H-J Mentzel
- Institute of Diagnostic and Interventional Radiology, Department of Pediatric Radiology, Friedrich-Schiller-University, Jena University Hospital, Am Klinikum 1, 07740 Jena, Germany
| | - F Streitparth
- Department of Radiology, Charité University Medicine Berlin, Campus Virchow Clinic, Augustenburger Platz 1, 13353 Berlin, Germany
| | - M H Maurer
- Department of Radiology, Charité University Medicine Berlin, Campus Virchow Clinic, Augustenburger Platz 1, 13353 Berlin, Germany
| | - A Pfeil
- Department of Internal Medicine III, Friedrich-Schiller-University, Jena University Hospital, Am Klinikum 1, 07740 Jena, Germany
| | - A Huppertz
- Department of Radiology, Charité University Medicine Berlin, Campus Virchow Clinic, Augustenburger Platz 1, 13353 Berlin, Germany
| | - A Mehl
- Division of Pulmonology and Immunology, Department of Pediatrics, Charité University Medicine Berlin, Campus Virchow Clinic, Augustenburger Platz 1, 13353 Berlin, Germany
| | - D Staab
- Division of Pulmonology and Immunology, Department of Pediatrics, Charité University Medicine Berlin, Campus Virchow Clinic, Augustenburger Platz 1, 13353 Berlin, Germany
| | - B Hamm
- Department of Radiology, Charité University Medicine Berlin, Campus Virchow Clinic, Augustenburger Platz 1, 13353 Berlin, Germany
| | - D M Renz
- Department of Radiology, Charité University Medicine Berlin, Campus Virchow Clinic, Augustenburger Platz 1, 13353 Berlin, Germany; Institute of Diagnostic and Interventional Radiology, Department of Pediatric Radiology, Friedrich-Schiller-University, Jena University Hospital, Am Klinikum 1, 07740 Jena, Germany.
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Abstract
Wear phenomena of ceramic inlays are not fully understood. The aim of the present study was to evaluate ceramic wear, antagonist enamel wear, and luting cement wear over 8 years. The two-fold null hypothesis was that there would be (1) no difference in wear behavior between ceramic and enamel, and (2) no influence of filler content of luting composites on composite wear. From 96 restorations, 36 Class II inlays from 16 participants were selected. For inlays with opposing enamel cusps (n = 17), replicas of inlays and enamel were scanned with a 3-D laser scanner. Luting gaps of inlays (n = 36) were analyzed with a profilometer, including 3-D data analysis. Ceramic and enamel wear increased between 4 and 8 years, with significantly higher values for enamel after 6 years (p < 0.05). Luting gap wear increased continuously up to 8 years (p < 0.05), with no influence of luting composites (p > 0.05) and location of teeth (p > 0.05).
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Affiliation(s)
- N Krämer
- Department of Pediatric Dentistry, University Medical Center Carl Gustav Carus, Technical University of Dresden, Fetscherstrasse 74, D-01307, Dresden, Germany
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Velasquez T, Mackey G, Lusk J, Kyle UG, Fontenot T, Marshall P, Shekerdemian LS, Coss-Bu JA, Nishigaki A, Yatabe T, Tamura T, Yamashita K, Yokoyama M, Ruiz-Rodriguez JC, Encina B, Belmonte R, Troncoso I, Tormos P, Riveiro M, Baena J, Sanchez A, Bañeras J, Cordón J, Duran N, Ruiz A, Caballero J, Nuvials X, Riera J, Serra J, Rutten AMF, van Ieperen SNM, Der Kinderen EPHM, Van Logten T, Kovacikova L, Skrak P, Zahorec M, Kyle UG, Akcan-Arikan A, Silva JC, Mackey G, Lusk J, Goldsworthy M, Shekerdemian LS, Coss-Bu JA, Wood D, Harrison D, Parslow R, Davis P, Pappachan J, Goodwin S, Ramnarayan P, Chernyshuk S, Yemets H, Zhovnir V, Pulitano’ SM, De Rosa S, Mancino A, Villa G, Tosi F, Franchi P, Conti G, Patel B, Khine H, Shah A, Sung D, Singer L, Haghbin S, Inaloo S, Serati Z, Idei M, Nomura T, Yamamoto N, Sakai Y, Yoshida T, Matsuda Y, Yamaguchi Y, Takaki S, Yamaguchi O, Goto T, Longani N, Medar S, Abdel-Aal IR, El Adawy AS, Mohammed HMEH, Mohamed AN, Parry SM, Knight LD, Denehy L, De Morton N, Baldwin CE, Sani D, Kayambu G, da Silva VZM, Phongpagdi P, Puthucheary ZA, Granger CL, Rydingsward JE, Horkan CM, Christopher KB, Muscedere J, Scott SH, Saha T, Hamilton A, Petsikas D, Payne D, Boyd JG, Puthucheary ZA, McNelly AS, Rawal J, McWilliams D, Connolly B, McPhail MJ, Sidhu P, Rowlerson A, Moxham J, Harridge SD, Hart N, Montgomery HE, Jovaisa T, Thomas B, Jones C, Gupta D, Wijayatilake DS, Shum HP, King HS, Chan KC, Tang KB, Yan WW, Arias CC, Latorre J, De La Rica AS, Reeves E, Garrido EM, Feijoo AM, Gancedo CH, Tofiño AL, Rodríguez FG, Gemmell LK, Campbell R, Doherty P, MacKay A, Singh N, Atkins G, Vitaller S, Nagib H, Prieto J, Del Arco A, Zayas B, Gomez C, Tirumala S, Pasha SA, Kumari BK, Martinez-Lopez P, Snelson C, Puerto-Morlán A, Nuevo-Ortega P, Pujol LM, Dolset RA, González BS, Riera SQ, Álvarez JT, Quintana S, Martínez L, Algarte R, Aitken LM, Sánchez B, Trenado J, Tomas E, Brock N, Viegas E, Filipe E, Cottle D, Traynor T, Martínez MVT, Márquez MP, Rattray J, Gómez LC, Martínez NA, Muñoz JMM, Bellver BQ, Varea MM, Llorente MÁA, Calvo CP, Hillier SD, Faulds MC, Hendra H, Kenardy J, Lawrence N, Maekawa K, Hayakawa M, Ono Y, Kodate A, Sadamoto Y, Tominaga N, Mizugaki A, Murakami H, Yoshida T, Hull AM, Katabami K, Wada T, Sawamura A, Gando S, Silva S, Kerhuel L, Malagurski B, Citerio G, Chabanne R, Laureys S, Ullman A, Puybasset L, Nobile L, Pognuz ER, Rossetti AO, Verginella F, Gaspard N, Creteur J, Ben-Hamouda N, Oddo M, Taccone FS, Le Brocque R, Ono Y, Hayakawa M, Iijima H, Maekawa K, Kodate A, Sadamoto Y, Mizugaki A, Murakami H, Katabami K, Wada T, Mitchell M, Sawamura A, Gando S, Kodate A, Katabami K, Wada T, Ono Y, Maekawa K, Hayakawa M, Sawamura A, Gando S, Davis C, Andersen LW, Raymond T, Berg R, Nadkarni V, Grossestreuer A, Kurth T, Donnino M, Krüger A, Ostadal P, Janotka M, Macfarlane B, Vondrakova D, Kongpolprom N, Cholkraisuwat J, Pekkarinen PT, Ristagno G, Masson S, Latini R, Bendel S, Ala-Kokko T, Varpula T, Azevedo JC, Vaahersalo J, Hoppu S, Tiainen M, Mion MM, Plebani M, Pettilä V, Skrifvars M, Son Y, Kim KS, Suh GJ, Rocha LL, Kwon WY, Ko JI, Park MJ, Cavicchi FZ, Iesu E, Nobile L, Vincent JL, Creteur J, Taccone FS, Tanaka H, De Freitas FFM, Otani N, Ode S, Ishimatsu S, Martínez L, Algarte R, Sánchez B, Romero I, Martínez F, Quintana S, Trenado J, Cavalheiro AM, Vondrakova D, Ostadal P, Kruger A, Janotka M, Malek F, Neuzil P, Yeh YC, Chen YS, Wang CH, Huang CH, Lucinio NM, Chao A, Lee CT, Lai CH, Chan WS, Cheng YJ, Sun WZ, Kaese S, Horstmann C, Lebiedz P, Mourad M, Lobato MS, Gaudard P, Eliet J, Zeroual N, Colson P, Ostadal P, Mlcek M, Hrachovina M, Kruger A, Vondrakova D, Janotka M, Ebeling G, Mates M, Hala P, Kittnar O, Neuzil P, Jacky A, Rudiger A, Spahn DR, Bettex DA, Kara A, Akin S, Kraegpoeth A, Dos reis Miranda D, Struijs A, Caliskan K, van Thiel RJ, Dubois EA, de Wilde W, Zijlstra F, Gommers D, Ince C, Marca L, Laerkner E, Xini A, Mongkolpun W, Cordeiro CPR, Leite RT, Lheureux O, Bader A, Rincon L, 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E, Juliarena A, Bisso MC, Grando M, Tapia A, Camargo M, Ulla DV, Corzo L, dos Santos HP, Ramos A, Doglia JA, Estenssoro E, Carbonara M, Magnoni S, Donald CLM, Shimony JS, Conte V, Triulzi F, Stretti F, Macrì M, Snyder AZ, Stocchetti N, Brody DL, Podlepich V, Shimanskiy V, Savin I, Lapteva K, Chumaev A, Tjepkema-Cloostermans MC, Hofmeijer J, Beishuizen A, Hom H, Blans MJ, van Putten MJAM, Longhi L, Frigeni B, Curinga M, Mingone D, Beretta S, Patruno A, Gandini L, Vargiolu A, Ferri F, Ceriani R, Rottoli MR, Lorini L, Citerio G, Pifferi S, Battistini M, Cordolcini V, Agarossi A, Di Rosso R, Ortolano F, Stocchetti N, Lourido CM, Cabrera JLS, Santana JDM, Alzola LM, del Rosario CG, Pérez HR, Torrent RL, Eslami S, Dalhuisen A, Fiks T, Schultz MJ, Hanna AA, Spronk PE, Wood M, Maslove D. ESICM LIVES 2016: part three. Intensive Care Med Exp 2016. [PMCID: PMC5042925 DOI: 10.1186/s40635-016-0100-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Velez N, Viegas E, Filipe E, Groves C, Reay M, Chiu LC, Hu HC, Hung CY, Chang CH, Li SH, Kao KC, Ballin A, Facchin F, Sartori G, Zarantonello F, Campello E, Radu CM, Rossi S, Ori C, Simioni P, Umei N, Shingo I, Santos AC, Candeias C, Moniz I, Marçal R, e Silva ZC, Ribeiro JM, Georger JF, Ponthus JP, Tchir M, Amilien V, Ayoub M, Barsam E, Martucci G, Panarello G, Tuzzolino F, Capitanio G, Ferrazza V, Carollo T, Giovanni L, Arcadipane A, Sánchez ML, González-Gay MA, Díaz FJL, López MIR, Zogheib E, Villeret L, Nader J, Bernasinski M, Besserve P, Caus T, Dupont H, Morimont P, Habran S, Hubert R, Desaive T, Blaffart F, Janssen N, Guiot J, Pironet A, Dauby P, Lambermont B, Zarantonello F, Ballin A, Facchin F, Sartori G, Campello E, Pettenuzzo T, Citton G, Rossi S, Simioni P, Ori C, Kirakli C, Ediboglu O, Ataman S, Yarici M, Tuksavul F, Keating S, Gibson A, Gilles M, Dunn M, Price G, Young N, Remeta P, Bishop P, Zamora MDF, Muñoz-Bono J, Curiel-Balsera E, Aguilar-Alonso E, Hinojosa R, Gordillo-Brenes A, Arboleda-Sánchez JA, Skorniakov I, Vikulova D, Whiteley C, Shaikh O, Jones A, Ostermann M, Forni L, Scott M, Sahatjian J, Linde-Zwirble W, Hansell D, Laoveeravat P, Srisawat N, Kongwibulwut M, Peerapornrattana S, Suwachittanont N, Wirotwan TO, Chatkaew P, Saeyub P, Latthaprecha K, Tiranathanagul K, Eiam-ong S, Kellum JA, Berthelsen RE, Perner A, Jensen AEK, Jensen JU, Bestle MH, Gebhard DJ, Price J, Kennedy CE, Akcan-Arikan A, Liberatore AMA, Souza RB, Martins AMCRPF, Vieira JCF, Kang YR, Nakamae MN, Koh IHJ, Hamed K, Khaled MM, Soliman RA, Mokhtar MS, Seller-Pérez G, Arias-Verdú D, Llopar-Valdor E, De-Diós-Chacón I, Quesada-García G, Herrera-Gutierrez ME, Hafes R, Carroll G, Doherty P, Wright C, Vera IGG, Ralston M, Gemmell ML, MacKay A, Black E, Wright C, Docking RI, Appleton R, Ralston MR, Gemmell L, Appleton R, Wright C, Docking RI, Black E, Mackay A, Rozemeijer S, Mulier JLGH, Röttgering JG, Elbers PWG, Spoelstra-de Man AME, Tuinman PR, de Waard MC, Oudemans-van Straaten HM, Mejeni N, Nsiala J, Kilembe A, Akilimali P, Thomas G, Egerod I, Andersson AE, Fagerdahl AM, Knudsen V, Meddeb K, Cheikh AB, Hamdaoui Y, Ayachi J, Guiga A, Fraj N, Romdhani S, Sma N, Bouneb R, Chouchene I, Khedher A, Bouafia N, Boussarsar M, Amirian A, Ziaian B, Masjedi M, Fleischmann C, Thomas-Rueddel DO, Schettler A, Schwarzkopf D, Stacke A, Reinhart K, Filipe E, Escoval A, Martins A, Sousa P, Velez N, Viegas E, Tomas E, Snell G, Matsa R, Paary TTS, Kalaiselvan MS, Cavalheiro AM, Rocha LL, Vallone CS, Tonilo A, Lobato MDS, Malheiro DT, Sussumo G, Lucino NM, Zand F, Rosenthal VD, Masjedi M, Sabetian G, Maghsudi B, Ghorbani M, Dashti AS, Yousefipour A, Goodall JR, Williamson M, Tant E, Thomas N, Balci C, Gonen C, Haftacı E, Gurarda H, Karaca E, Paldusová B, Zýková I, Šímová D, Houston S, D’Antona L, Lloyd J, Garnelo-Rey V, Sosic M, Sotosek-Tokmazic V, Kuharic J, Antoncic I, Dunatov S, Sustic A, Chong CT, Sim M, Lyovarin T, Díaz FMA, Galdó SN, Garach MM, Romero OM, Bailón AMP, Pinel AC, Colmenero M, Gritsan A, Gazenkampf A, Korchagin E, Dovbish N, Lee RM, Lim MPP, Chong CT, Lim BCL, See JJ, Assis R, Filipe F, Lopes N, Pessoa L, Pereira T, Catorze N, Aydogan MS, Aldasoro C, Marchio P, Jorda A, Mauricio MD, Guerra-Ojeda S, Gimeno-Raga M, Colque-Cano M, Bertomeu-Artecero A, Aldasoro M, Valles SL, Tonon D, Triglia T, Martin JC, Alessi MC, Bruder N, Garrigue P, Velly L, Spina S, Scaravilli V, Marzorati C, Colombo E, Savo D, Vargiolu A, Cavenaghi G, Citerio G, Andrade AHV, Bulgarelli P, Araujo JAP, Gonzalez V, Souza VA, Costa A, Massant C, Filho CACA, Morbeck RA, Burgo LE, van Groenendael R, van Eijk LT, Leijte GP, Koeneman B, Kox M, Pickkers P, García-de la Torre A, de la Torre-Prados M, Fernández-Porcel A, Rueda-Molina C, Nuevo-Ortega P, Tsvetanova-Spasova T, Cámara-Sola E, García-Alcántara A, Salido-Díaz L, Liao X, Feng T, Zhang J, Cao X, Wu Q, Xie Z, Li H, Kang Y, Winkler MS, Nierhaus A, Mudersbach E, Bauer A, Robbe L, Zahrte C, Schwedhelm E, Kluge S, Zöllner C, Morton B, Mitsi E, Pennington SH, Reine J, Wright AD, Parker R, Welters ID, Blakey JD, Rajam G, Ades EW, Ferreira DM, Wang D, Kadioglu A, Gordon SB, Koch R, Kox M, Rahamat-Langedoen J, Schloesser J, de Jonge M, Pickkers P, Bringue J, Guillamat-Prats R, Torrents E, Martinez ML, Camprubí-Rimblas M, Artigas A, Blanch L, Park SY, Park YB, Song DK, Shrestha S, Park SH, Koh Y, Park MJ, Hong CW, Lesur O, Coquerel D, Sainsily X, Cote J, Söllradl T, Murza A, Dumont L, Dumaine R, Grandbois M, Sarret P, Marsault E, Salvail D, Auger-Messier M, Chagnon F, Lauretta MP, Greco E, Dyson A, Singer M, Preau S, Ambler M, Sigurta A, Saeed S, Singer M, Sarıca LT, Zibandeh N, Genc D, Gul F, Akkoc T, Kombak E, Cinel L, Akkoc T, Cinel I, Pollen SJ, Arulkumaran N, Singer M, Torrance HD, Longbottom ER, Warnes G, Hinds CJ, Pennington DJ, Brohi K, O’Dwyer MJ, Kim HY, Na S, Kim J, Chang YF, Chao A, Shih PY, Lee CT, Yeh YC, Chen LW, Adriaanse M, Trogrlic Z, Ista E, Lingsma H, Rietdijk W, Ponssen HH, Schoonderbeek JF, Schreiner F, Verbrugge SJ, Duran S, Gommers DAMPJ, van der Jagt M, Funcke S, Sauerlaender S, Saugel B, Pinnschmidt H, Reuter DA, Nitzschke R, Perbet S, Biboulet C, Lenoire A, Bourdeaux D, Pereira B, Plaud B, Bazin JE, Sautou V, Mebazaa A, Constantin JM, Legrand M, Boyko Y, Jennum P, Nikolic M. ESICM LIVES 2016: part one. Intensive Care Med Exp 2016. [PMCID: PMC5042924 DOI: 10.1186/s40635-016-0098-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Zimmermann M, Mehl A, Mörmann WH, Reich S. Intraoral scanning systems - a current overview. Int J Comput Dent 2015; 18:101-129. [PMID: 26110925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
There is no doubt today about the possibilities and potential of digital impression-taking with the aid of intraoral optical impression systems, and the past few years have seen a considerable increase in the range of optical intraoral scanners available on the market. On the strength of numerous innovations and a wider range of indications in orthodontics and implantology, intraoral scanning systems appear to be a highly promising development for the future. Digital impression-taking with intraoral scanners has already shown itself in some respects to be clearly superior to conventional impression- taking. Particularly worthy of mention is the versatile integration of digital impressions into diagnostic and treatment concepts to provide a customizable healthcare solution for the patient. It remains exciting to look forward to future developments that will allow us to observe digital impression-taking--as with other digital applications already established in everyday life--becoming firmly established in the routine of dentistry and dental technology. This article presents an overview of the benefits and limitations of digital impression-taking using intraoral scanning systems, and includes a summary of all the relevant intraoral scanners available on the market at present.
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Mehl A, Harthug S, Lydersen S, Paulsen J, Åsvold BO, Solligård E, Damås JK, Edna TH. Prior statin use and 90-day mortality in Gram-negative and Gram-positive bloodstream infection: a prospective observational study. Eur J Clin Microbiol Infect Dis 2014; 34:609-17. [PMID: 25373530 PMCID: PMC4356896 DOI: 10.1007/s10096-014-2269-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 10/20/2014] [Indexed: 01/31/2023]
Abstract
In several studies on patients with bloodstream infection (BSI), prior use of statins has been associated with improved survival. Gram-positive and Gram-negative bacteria alert the innate immune system in different ways. We, therefore, studied whether the relation between prior statin use and 90-day total mortality differed between Gram-positive and Gram-negative BSI. We conducted a prospective observational cohort study of 1,408 adults with BSI admitted to Levanger Hospital between January 1, 2002, and December 31, 2011. Data on the use of statins and other medications at admission, comorbidities, functional status, treatment, and outcome were obtained from the patients’ hospital records. The relation of statin use with 90-day mortality differed between Gram-negative and Gram-positive BSI (p-value for interaction 0.01). Among patients with Gram-negative BSI, statin users had significantly lower 90-day total mortality [odds ratio (OR) 0.42, 95 % confidence interval (CI) 0.23–0.75, p = 0.003]. The association remained essentially unchanged after adjusting for the effect of sex, age, functional status before the infection, and underlying diseases that were considered confounders (adjusted OR 0.38, 95 % CI 0.20–0.72, p = 0.003). A similar analysis of patients with Gram-positive BSI showed no association of statin use with mortality (adjusted OR 1.22, 95 % CI 0.69–2.17, p = 0.49). The present study suggests that prior statin use is associated with a lower 90-day total mortality in Gram-negative BSI, but not in Gram-positive BSI.
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Affiliation(s)
- A Mehl
- Department of Medicine, Levanger Hospital, Nord-Trøndelag Hospital Trust, Post Box 333, 7601, Levanger, Norway,
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Mehl A, Rolinck-Werninghaus C, Staab D. 303 Kwashiorkor – a clinical manifestation of cystic fibrosis. J Cyst Fibros 2014. [DOI: 10.1016/s1569-1993(14)60438-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ahrens B, Mehl A, Lau S, Kroh L, Magdorf K, Wahn U, Beyer K, Niggemann B. Think twice: misleading food-induced respiratory symptoms in children with food allergy. Pediatr Pulmonol 2014; 49:E59-62. [PMID: 24167079 DOI: 10.1002/ppul.22816] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2012] [Accepted: 04/14/2013] [Indexed: 11/10/2022]
Abstract
Reported food-related symptoms of patients may sometimes be misleading. A correct delineation of food-induced symptoms is often difficult and various differential diagnoses have to be considered. We report on two cases of food-induced, predominantly respiratory symptoms (in one case life-threatening) in children with food allergy. First, a two-year-old boy with no history of allergies and suspected foreign body aspiration which was finally diagnosed as an anaphylactic reaction to fish, and secondly a six-year-old girl with multiple food allergies and allergic asthma who during an electively performed oral food challenge developed severe respiratory distress, drop in blood pressure, and asphyxia not due to an anaphylactic reaction but due to choking on an unnoticed sweet. These two cases represent challenging, life-threatening symptom constellations involving food-induced reactions in food allergic children, reminding us to question first impressions.
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Affiliation(s)
- B Ahrens
- Department of Pediatric Pneumology and Immunology, Charité Universitätsmedizin, Berlin, Germany
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Zaruba M, Ender A, Mehl A. New applications for three-dimensional follow-up and quality control using optical impression systems and OraCheck. Int J Comput Dent 2014; 17:53-64. [PMID: 24791465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Intraoral and extraoral scanning systems are continuously improving in terms of operational reliability and image quality. This creates new application options for the standard use of these systems in dental practice. Three-dimensional scans for volumetric and differential analysis of jaw position over time can be generated by superimposing partial or full-arch scans recorded at different time points. These analyses can be performed in a wide range of dental applications to compare and follow treatments or diagnoses over time. In this article, we will describe the indications and applications for OraCheck, a new software application that will be available to Cerec users in Spring 2014.
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Abstract
OBJECTIVES The aim of this in vivo study was to investigate how reproducible individuals find their habitual intercuspation. METHODS A new type of highly accurate measuring procedure was involved using an intraoral optical scanning device (Cerec Bluecam). First, a pilot test investigated the accuracy of the procedure within a standardized setting. With regard to the in vivo study, fifteen participants with full dentition were selected. For each of these individuals, eight scans were taken both in the morning and in the afternoon. Furthermore, during each session, scans were taken both in horizontal and upright position. In order to compare this to ubiquitous used processes, plaster replicas of five individuals were investigated as well. The scans were analysed, and the differences in the position of the lower jaw were calculated by a specialized superimposition program (n=570 comparisons/OraCheck). RESULTS The results showed that there was no significant difference between the time of day and the position of the patient. The overall mean ± SD value for locating the habitual intercuspation was 42 ± 34 μm, however ranging from 22 ± 9 μm to 77 ± 58 μm for single individuals. On the other hand, the differences in positioning plaster replicas reached a mean of 135 ± 77 μm. CONCLUSIONS The reproducibility of the habitual intercuspation can be obtained under in vivo conditions by a newly developed and highly accurate measuring procedure. Individuals with full dentition show values in average of 42 μm. CLINICAL SIGNIFICANCE Determining the occlusal jaw relation is an important precondition in restorative dentistry and many methods are proposed for a proper occlusal registration. Although much is known about in vitro accuracy of these techniques, little is known how reproducible the habitual occlusal position itself is found between individuals.
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Affiliation(s)
- S Jaschouz
- Clinic of Preventive Dentistry, Periodontology and Cariology, Division of Computerized Restorative Dentistry, University of Zurich, Zurich, Switzerland.
| | - A Mehl
- Clinic of Preventive Dentistry, Periodontology and Cariology, Division of Computerized Restorative Dentistry, University of Zurich, Zurich, Switzerland
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Zaruba M, Kasper R, Kazama R, Wegehaupt FJ, Ender A, Attin T, Mehl A. Marginal adaptation of ceramic and composite inlays in minimally invasive mod cavities. Clin Oral Investig 2013; 18:579-87. [PMID: 23636610 DOI: 10.1007/s00784-013-0988-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Accepted: 04/08/2013] [Indexed: 11/28/2022]
Abstract
OBJECTIVES This study aims to evaluate the effect of a minimally invasive mesial-occlusal-distal (mod) preparation on the marginal adaptation of ceramic and composite inlays with the aim of saving sound dental substance. MATERIALS AND METHODS Class II mod cavities were prepared in 50 extracted human molars and randomly allocated to five groups (n = 10). In all groups, the mesial-proximal box margins were located in the dentin, 1 mm below the cementoenamel junction (CEJ), while the distal box margins were 1 mm above the CEJ. In groups A and B, conventional standard preparations with a divergent angle of α = 6° were prepared. In groups C, D, and E, minimally invasive standard preparations with a convergent angle of α = 10° were prepared. In groups A and D, composite inlays and, in groups B and C, ceramic inlays were fabricated (chairside economical restoration of esthetic ceramics (CEREC)) and adhesively inserted. In group E, a direct composite filling using the incremental technique was placed. Replicas were taken before and after thermomechanical loading (1,200,000 cycles, 50/5 °C, max. load 49 N). Marginal integrity (tooth-luting composite, luting composite-inlay) was evaluated by scanning electron microscopy (× 200). The percentage of continuous margins in the different locations was compared between and within groups before and after cycling, using ANOVA and Scheffé post hoc test. RESULTS After the thermomechanical loading, no significant differences were observed between the different groups with respect to the interface of luting composite-inlay. At the interface of tooth-luting composite for preparations involving the dentin, groups A and B behaved significantly better compared to the control group E, which in turn were not different to groups C and D. CONCLUSION Composite and ceramic inlays inserted in minimally invasive prepared mod cavities result in margins not different from those of inlays placed in conventional mod preparations. Direct composite filling margins, however, were inferior to those attained by conventional indirect restorations. CLINICAL RELEVANCE Minimally invasive preparations for mod inlays with undercuts show marginal adaptation equal to that of conventional inlay preparation design.
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Affiliation(s)
- M Zaruba
- Clinic for Preventive Dentistry, Periodontology and Cariology, University of Zurich, Plattenstrasse 11, CH-8032, Zurich, Switzerland,
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Ender A, Mehl A. Influence of scanning strategies on the accuracy of digital intraoral scanning systems. Int J Comput Dent 2013; 16:11-21. [PMID: 23641661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The digital intraoral impression is a central part in today's CAD/CAM dentistry. With its possibilities, new treatment options for the patient is provided and the prosthetic workflow is accelerated. Nowadays, the major issue with intraoral scanning systems is to gain more accuracy especially for larger scan areas and to simplify clinical handling for the dentist. The aim of this study was to investigate different scanning strategies regardingtheir accuracy with full arch scans in an in-vitro study design. A reference master model was used for the digital impressions with the Lava COS, the Cerec Bluecam and a powderfree intraoral scanning system, Cadent iTero. The trueness and precision of each scanning protocol was measured. Lava COS provides the a trueness of 45.8 microm with the scanning protocol recommended from the manufacturer. A different scanning protocol shows significantly lower accuracy (trueness +/- 90.2 microm). Cerec Bluecam also benefits from an optimal scanning protocol with a trueness of +/- 23.3 microm compared to +/- 52.5 microm with a standard protocol. The powderfree impression system Cadent iTero shows also a high accurate full-arch scan with a trueness of +/- 35.0 microm and a precision of +/- 30.9 microm. With the current intraoral scanning systems, full arch dental impressions are possible with a high accuracy, if adequate scan strategies are used. The powderfree scanning system provides the same level of accuracy compared to scanning systems with surface pretreatment.
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Affiliation(s)
- A Ender
- Division for Computerized Restorative Dentistry, Center of Dental Medicine, University of Zurich, Switzerland.
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Reich S, Vollborn T, Mehl A, Zimmermann M. Intraoral optical impression systems--an overview. Int J Comput Dent 2013; 16:143-162. [PMID: 23930576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Affiliation(s)
- S Reich
- Subject and Research Area of Computerized Dentistry, Department of Prosthodontics and Biomaterialis, Centre of Implantology, Uniklinik RWTH Aachen, Aachen, Germany.
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Mehl A, Koch R, Zaruba M, Ender A. 3D monitoring and quality control using intraoral optical camera systems. Int J Comput Dent 2013; 16:23-36. [PMID: 23641662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The quality of intraoral scanning systems is steadily improving, and they are becoming easier and more reliable to operate. This opens up possibilities for routine clinical applications. A special aspect is that overlaying (superimposing) situations recorded at different times facilitates an accurate three-dimensional difference analysis. Such difference analyses can also be used to advantage in other areas of dentistry where target/actual comparisons are required. This article presents potential indications using a newly developed software, explaining the functionality of the evaluation process and the prerequisites and limitations of 3D monitoring.
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Affiliation(s)
- A Mehl
- Division of Computerized Restorative Dentistry, Center of Dental Medicine, University of Zurich, Switzerland.
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Zimmermann M, Mehl A, Reich S. New CAD/CAM materials and blocks for chairside procedures. Int J Comput Dent 2013; 16:173-181. [PMID: 23930578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Affiliation(s)
- M Zimmermann
- Department of Restorative Dentistry and Periodontology, Ludwig Maximilians University, Munich, Germany.
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Mehl A, Niggemann B, Keil T, Wahn U, Beyer K. Skin prick test and specific serum IgE in the diagnostic evaluation of suspected cow's milk and hen's egg allergy in children: does one replace the other? Clin Exp Allergy 2012; 42:1266-72. [PMID: 22805474 DOI: 10.1111/j.1365-2222.2012.04046.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND The measurement of specific serum immunoglobulin E (sIgE) and the skin prick test (SPT) are accepted tools in the diagnostic work-up of suspected food allergy. Often only one of the methods is used to determine sensitization; however, it is still under debate whether these two methods can be used interchangeably. OBJECTIVES To investigate the concordance of SPT and sIgE serum assays with regard to suspected food allergy. METHODS In 395 children referred to our clinic with suspected cow's milk allergy and in 268 children with suspected hen's egg allergy specific immunoglobulin E (IgE) was measured, a SPT and an oral food challenge performed. A weal size ≥ 3 mm and sIgE ≥ 0.35 kU/L were considered positive. The weal size of the SPT and the level of food-specific IgE were tested for correlation for each allergen. RESULTS Of the 395 (23%) children orally challenged with cow's milk, 92 showed no corresponding results for SPT and sIgE as either positive or negative. For hen's egg, in 27 of 268 (10%) children differing test results for SPT and sIgE in serum were obtained. Moreover, regarding the quantitative values for sIgE and SPT in children with or without clinically relevant food allergy, sIgE and SPT correlated badly. CONCLUSIONS The concordance between SPT and sIgE is surprisingly low for cow's milk and hen's egg on an individual basis. Therefore, the tests should not be used interchangeably. Especially in children who receive a negative test result the alternative test should also be used. Furthermore, our data indicate again that oral food challenges are still the method of choice to diagnose food allergies.
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Affiliation(s)
- A Mehl
- Department of Pediatric Pneumology and Immunology, Charité University Medical Center, Berlin, Germany
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Bindl A, Ritter L, Mehl A. Cerec Guide: rapid and streamlined manufacture of surgical guides in dental practice. Int J Comput Dent 2012; 15:45-54. [PMID: 22930947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Affiliation(s)
- A Bindl
- Computer Assisted Restorative Dentistry Unit, Department of Preventive Dentistry, Periodontology and Cariology, Dental, Oral and Maxillofacial Medicine Center, University of Zurich, Switzerland.
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Mehl A. A new concept for the integration of dynamic occlusion in the digital construction process. Int J Comput Dent 2012; 15:109-123. [PMID: 22891415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Major advances have been made in dental computer-assisted design and manufacturing (CAD/CAM) technology in recent years. New developments in intraoral optical scanning systems make it possible to rapidly obtain three-dimensional images and measurements of the jaw and entire quadrants, including the prepared teeth, neighboringteeth, and opposing dentition. In addition, the static relationship of the maxillary and mandibular teeth to one another can easily be determined by means of intraoral bite registrations or buccal scans. This information is the starting point for the implementation of digital occlusal surface design and surface reconstruction. Here, too, the knowledge-based concept of biogenerics has crystallized into a new method in which restoration proposals suitable for each individual case are automatically computed by the software. Consequently, the time required to manually edit the digital model has been significantly reduced or completely eliminated. In its current form, the digital workflow still lacks a strategy for integrating the dynamic occlusion into the restoration design with high precision and in atime-saving manner. The preliminary results of new digital concepts and approaches to solving this problem will be presented in this article.
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Affiliation(s)
- A Mehl
- Computer-assisted Restorative Dentistry Unit, Dental Center, University of Zurich, Switzerland.
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Foss A, Prudden H, Mehl A, Zimmerman C, Ashburn K, Trasi R, Kiess M, Bantebya-Kyomuhendo G, Fritz K, Watts C. P1-S4.16 The UNAIDS modes of transmission model: a useful tool for decision making? Br J Vener Dis 2011. [DOI: 10.1136/sextrans-2011-050108.160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ender A, Mehl A. Full arch scans: conventional versus digital impressions--an in-vitro study. Int J Comput Dent 2011; 14:11-21. [PMID: 21657122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The digital intraoral impression has become a central part of the CAD/CAM technique. The objective of the present study was to compare the accuracy (trueness and precision) of digital impressions of the full arch with that of conventional impressions on the in-vitro model. For this purpose, a master model was acquired with a new reference scanning process, the measuring trueness of which was +/- 4.1 microm and the precision +/- 2.5 microm. On the one hand, conventional impressions and then plaster models (n = 5) were produced from this master model, and on the other hand, digital impressions were made with the Cerec AC Bluecam and the Lava COS system (each n = 5). The plaster models were also scanned with the reference scanner. The available data records were superimposed and the differences determined. The deviation from the master model defines the trueness of the impression method. The deviations of the models among one another demonstrate the precision of the method. The trueness of the impressions was 55 +/- 21.8 microm in the conventional impression group, for digital impressions with Cerec Bluecam it was 49 +/- 14.2 microm and for digital impressions with Lava COS 40.3 +/- 14.1 microm. The precision was 61.3 +/- 17.9 microm for conventional impression with Impregum, 30.9 +/- 7.1 microm for digital impression with the Cerec Bluecam and 60.1 +/- 31.3 microm for digital impression with Lava COS. These in-vitro results show that accuracy of the digital impression is similar to that of the conventional impression. These results will have to be confirmed in further clinical studies.
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Affiliation(s)
- A Ender
- Department of Computerized Dentistry, Center for Dental Medicine, University of Zurich, Switzerland.
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Bindl A, Ritter L, Mehl A. Digital 3-D implant planning: Cerec meets Galileos. Int J Comput Dent 2010; 13:221-231. [PMID: 20879461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Prosthetically based implant planning is necessary so that implants are set expediently and correctly during surgery. A clinical case is presented to describe how this can be performed today purely digitally. Prosthetic planning was undertaken with the Cerec CAD/CAM system. The data record created was transferred and superimposed on a CBCT 3-D radiograph. The position of the implant was planned taking the prosthetic planning into account.
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Affiliation(s)
- A Bindl
- Computer Restoration Station, Department of Preventive Dentistry, Periodontology and Cariology, Center of Dental, Oral and Maxillofacial Medicine, University of Zurich, Switzerland.
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Teuffel F, Kunzelmann KH, Gloger W, Mehl A, Hickel R. Verschleißmessung zahnärztlicher Füllungswerkstoffe mit einem 3D-Laser-Meßplatz und einer referenzpunktfreien Auswertroutine. BIOMED ENG-BIOMED TE 2009. [DOI: 10.1515/bmte.1995.40.s1.389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Mehl A, Ender A, Mörmann W, Attin T. Accuracy testing of a new intraoral 3D camera. Int J Comput Dent 2009; 12:11-28. [PMID: 19213357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Surveying intraoral structures by optical means has reached the stage where it is being discussed as a serious clinical alternative to conventional impression taking. Ease of handling and, more importantly, accuracy are important criteria for the clinical suitability of these systems. This article presents a new intraoral camera for the Cerec procedure. It reports on a study investigating the accuracy of this camera and its potential clinical indications. Single-tooth and quadrant images were taken with the camera and the results compared to those obtained with a reference scanner and with the previous 3D camera model. Differences were analyzed by superimposing the data records. Accuracy was higher with the new camera than with the previous model, reaching up to 19 microm in single-tooth images. Quadrant images can also be taken with sufficient accuracy (ca 35 microm) and are simple to perform in clinical practice, thanks to built-in shake detection in automatic capture mode.
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Affiliation(s)
- A Mehl
- Divison of Computerized Dentistry, Center for Dental and Oral Medicine and Cranio-Maxillofacial Surgery, University of Zurich.
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Reich S, Botsis O, Deligiannis P, Mehl A. Fit of surgical guides--manufactured by InLab 3D. Int J Comput Dent 2007; 10:329-337. [PMID: 18432016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Based on an exclusively virtual implant planning and positioning concept, the fit of surgical-guide-like workpieces was evaluated in an in-vitro pilot study, manufactured with the InLab 3D system. From 85 maxillary casts, 8 were randomly selected. The first right maxillary incisor was removed. After optical impression of the maxillary anterior teeth, a drilling template was designed by the use of the InLab software, version 3.0. The mode "bridge" "dental database" was applied. The guidance was milled from a methacrylate block and braced on the adjacent teeth. After milling, they were checked for proper seat (without rocking). The discrepancies between the inner surface of the template and the opposing tooth surface was shown with a silcone based material, which rested on the casts after removing the template. The difference between the thickness of the silicone layer and the subjacent tooth surface was measured with a high resolution scanner. In order to characterize the fit of the 8 workpieces the average mean, average maximum and average minimum values of the fit were calculated in the buccal, incisal and palatinal area using the program Match 3D (W. Gloger, LMU): average mean: buccal: 65 microm; incisal: 116 microm; palatinal: 94 microm; average maximum: buccal: 162 microm; incisal: 202 microm; palatinal:190 microm; average minimum: buccal: 5 microm; incisal: 14 microm; palatinal: 15 microm. In the present study it was possible to produce drilling templates with the already commercially available InLab system. The results were presented at the Annual Meeting of the German Society of Computerized Dentistry 2007 as a short presentation.
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Affiliation(s)
- S Reich
- Department of Prosthodontics and Material Sciences, University of Leipzig, Germany.
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Richter J, Mehl A. Evaluation for the fully automatic inlay reconstruction by means of the biogeneric tooth model. Int J Comput Dent 2006; 9:101-11. [PMID: 16955647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Length measurements and descriptive characterizations were previously the sole reference points for describing the morphology of the occlusal surface. For computerized methods in dentistry, this is not sufficient for producing a data record. So far, the literature has reported no solutions. With the aid of a tooth library containing three-dimensionally measured occlusal surfaces free of caries and abrasion, a mathematical model was produced to describe a certain type of tooth by reference to a few parameters, taking account of functional and biologically relevant structures. This biogeneric tooth model was tested on 27 different inlay situations. The results show that fully automatic reconstruction was possible in all cases. The deviations of the reconstructions from the original tooth surface were on average around 150 microm. Furthermore, the influence of different parameters on the mathematical model was examined. Here, combinations that guarantee the best possible reconstruction for many situations could be found. The visual evaluation and the metric comparison of the reconstructions among one another illustrate the great flexibility of the biogeneric tooth model. With the aid of the biogeneric tooth model, there is the possibility of reconstructing the occlusal surfaces of dental restorations by CAD/CAM processes fully automatically, taking account of morphological and functional criteria. Further studies are needed to show to what extent the inclusion of degree of abrasion, antagonist and adjacent teeth delivers the desired results in the whole spectrum of clinical cases.
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Affiliation(s)
- J Richter
- Department for Prosthodontics, Ludwig Maximilian University, Munich
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Abstract
STATEMENT OF PROBLEM Qualitative visual inspections and linear metric measurements have been predominant methods for describing the morphology of teeth. No quantitative formulation exists for the description of dental features. PURPOSE The aim of this study was to determine and validate a mathematical process for calculation of the average form of first maxillary molars, including the general occlusal features. MATERIAL AND METHODS Stone replicas of 174 caries-free first maxillary molar crowns from young patients ranging from 6 to 9 years of age were measured 3-dimensionally with a laser scanning system at a resolution of approximately 100,000 points. Then, the average tooth was computed, which captured the common features of the molar's surface quantitatively. This new method adapts algorithms both from computer science and neuroscience to detect and associate the same features and same surface points (correspondences) between 1 reference tooth and all other teeth. In this study, the method was tested for 7 different reference teeth. The algorithm does not involve any prior knowledge about teeth and their features. RESULTS Irrespective of the reference tooth used, the procedure yielded average teeth that showed nearly no differences (less than +/-30 microm). CONCLUSION This approach provides a valid quantitative process for calculating 3-dimensional (3D) averages of occlusal surfaces of teeth even in the event of a high number of digitized surface points. Additionally, because this process detects and assigns point-wise feature correspondences between all library teeth, it may also serve as a basis for a more substantiated principal component analysis evaluating the main natural shape deviations from the 3D average.
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Affiliation(s)
- A Mehl
- Department of Restorative Dentistry, Ludwig Maximilians University, Munich, Germany.
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Abstract
BACKGROUND Severe anaphylactic reactions are medical emergencies requiring immediate recognition and treatment. Despite this, little is known on their clinical features, especially in infants and children. OBJECTIVE To evaluate trigger factors, patterns of clinical reaction, site of occurrence and treatment modalities of reported reaction in infants and children below 12 years of age in Germany. METHODS Paediatricians throughout Germany were asked by questionnaire to report accidental anaphylactic reactions over the previous 12 months. Severity of reported reactions was classified in grades I-IV according to reported symptoms. RESULTS Hundred and three cases of anaphylaxis were evaluated. Median age was 5 years, 58% were boys. Site of occurrence was the child's home in the majority of cases (58%). Foods were the most common causative allergen (57%), followed by insect stings (13%) and immunotherapy (SIT) (12%); in 8% anaphylactic agent was unknown. Among foods, peanuts and tree nuts were the most frequent allergens (20% of food allergens in each case). Severe reactions with cardiovascular involvement occurred in 24% of cases. No fatal reaction was observed. Recurrent episodes of anaphylaxis were reported in 27% of cases, half of these caused by the same allergen again. For treatment, 20% of children received adrenaline, in 8% of cases intravenously. Thirty-six per cent of patients with grade-IV reactions received adrenaline, 24% intravenously. In 17% of all children an adrenaline self-injector was prescribed after the episode. CONCLUSION Our data: (i) shows an uncertainty of physicians in diagnosing anaphylaxis, (ii) reveals remarkable under-treatment of the majority of children with anaphylaxis, (iii) reflects the need for guidelines and training for physicians in managing children with anaphylaxis and (iv) should encourage the development of self-management programmes for patients and families.
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Affiliation(s)
- A Mehl
- Department of Pediatric Pneumology and Immunology, Charité- University Medical Center Berlin, Berlin, Germany
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Rolinck-Werninghaus C, Staden U, Mehl A, Hamelmann E, Beyer K, Niggemann B. Specific oral tolerance induction with food in children: transient or persistent effect on food allergy? Allergy 2005; 60:1320-2. [PMID: 16135001 DOI: 10.1111/j.1398-9995.2005.00882.x] [Citation(s) in RCA: 143] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND The standard treatment of food allergy is elimination of the incriminated food from the diet. Specific oral tolerance induction (SOTI) seems to be a promising approach for a causal treatment; however, it is unclear whether the tolerance achieved is transient or persistent. We report on a subset of three patients of a larger ongoing study who were treated successfully with SOTI treatment, but experienced a secondary loss of tolerance after a period of allergen avoidance. METHODS The patients suffered from IgE-mediated allergy either to cow's milk (CM) (patient A) or hen's egg (HE) (patients B and C), confirmed by double-blind, placebo-controlled food challenge (DBPCFC). SOTI treatment was performed at home on a daily basis until tolerance to a maximum of 250 ml CM or 4.5 g lyophilized HE protein was achieved. The daily maintenance dose was 100 ml CM or 2.5 g HE protein. RESULTS Patients A, B and C reached tolerance to the maximum dose after 37, 41 and 52 weeks, respectively. According to the protocol, patients A and B performed a strict secondary elimination diet for 2 months prior to a follow-up DBPCFC after a maintenance phase of 27 and 39 weeks, respectively. Patient C discontinued treatment for 2 days after 4 weeks on the maintenance dose. Despite previous tolerance, on re-exposure to the allergen all patients experienced moderate systemic allergic reactions. CONCLUSIONS We conclude that SOTI can induce transient tolerance in food allergy, but does not necessarily lead to its permanent abrogation. Regular allergen intake seems necessary to maintain the established tolerance.
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Affiliation(s)
- C Rolinck-Werninghaus
- Department of Pediatric Pneumology and Immunology, University Children's Hospital Charité of Humboldt University, Berlin, Germany
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Verstege A, Mehl A, Rolinck-Werninghaus C, Staden U, Nocon M, Beyer K, Niggemann B. The predictive value of the skin prick test weal size for the outcome of oral food challenges. Clin Exp Allergy 2005; 35:1220-6. [PMID: 16164451 DOI: 10.1111/j.1365-2222.2005.2324.x] [Citation(s) in RCA: 171] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The skin prick test (SPT) is regarded as an important diagnostic measure in the diagnostic work-up of food allergy. Objective To evaluate the diagnostic capacity of the SPT in predicting the outcome of oral food challenges, and to determine decision points for the weal size and the skin index (SI) that could render double-blind, placebo-controlled food challenges unnecessary. METHODS In 385 children (median age 22 months), 735 controlled oral challenges were performed with cow's milk (CM), hen's egg (HE), wheat and soy. Three hundred and thirty-six of 385 (87%) children suffered from atopic dermatitis. SPT was performed in all children. Diagnostic capacity, receiver-operator characteristics (ROC) curves and predictive decision points were calculated for the mean weal size and the calculated SI. RESULTS Three hundred and twelve of 735 (43%) oral food challenges were assessed to be positive. Calculation of 95% and 99% predicted probabilities using logistic regression revealed predictive decision points of 13.0 and 17.8 mm for HE, and 12.5 and 17.3 mm for CM, respectively. However, using the SI, the corresponding cut-off levels were 2.6 and 3.7, respectively, for HE, and 2.7 and 3.7 for CM. For wheat, 95% and 99% decision points of 2.2 and 3.0 were found in children below 1 year of age. CONCLUSION Predictive decision points for a positive outcome of food challenges can be calculated for HE and CM using weal size and SI. They may help to avoid oral food challenges.
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Affiliation(s)
- A Verstege
- Department of Pediatric Pneumology and Immunology, University Children's Hospital Charité of Humboldt University, Augustenburger Platz 1, 13353 Berlin, Germany
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Mehl A, Verstege A, Staden U, Kulig M, Nocon M, Beyer K, Niggemann B. Utility of the ratio of food-specific IgE/total IgE in predicting symptomatic food allergy in children. Allergy 2005; 60:1034-9. [PMID: 15969684 DOI: 10.1111/j.1398-9995.2005.00806.x] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Double-blind, placebo-controlled food challenges are time-consuming, expensive and not without risk to patients. Therefore, an in vitro test that could accurately diagnose food allergy would be of great value. OBJECTIVE To evaluate the utility of the ratio of specific immunoglobulin E (IgE)/total IgE compared with specific IgE (sIgE) alone in predicting symptomatic food allergy. METHODS We retrospectively analysed 992 controlled oral food challenges performed in 501 children (median age 13 months). The ratio of sIgE/total IgE was calculated and tested for correlation with the outcome of food challenges. Receiver operator characteristics (ROC)-curves were performed; predicted probabilities and predictive decision points were calculated. RESULTS A significant correlation was found between the ratio and the outcome of food challenges for cow's milk (CM), hen's egg (HE), and wheat, but not for soy. The ROC and predicted probability curves as well as sensitivity and specificity of the decision points of the ratio were similar to those of sIgE levels for CM, HE and wheat. CONCLUSION In view of the greater effort needed to determine the ratio, without benefit compared with the sIgE alone, the calculation of the ratio of sIgE/total IgE for diagnosing symptomatic food allergy offers no advantage for CM, HE, wheat or soy. For the majority of cases controlled oral food challenges still remain the method of choice.
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Affiliation(s)
- A Mehl
- Department of Pediatric Pneumology and Immunology, University Children's Hospital Charité of Humboldt University, Berlin, Germany
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Abstract
The diagnostic work-up of suspected food allergy includes the skin prick test (SPT), the measurement of food specific immunoglobulin E (IgE) antibodies using serologic assays, and more recently the atopy patch test (APT). For specific serum IgE and the SPT, decision points have been established for some foods allowing prediction of clinical relevance in selected cases. The APT may be helpful, especially when considered in combination with defined levels of specific IgE. Controlled oral food challenges still remain the gold standard in the diagnostic work-up of children with suspected food allergy. Most food allergic children will lose their allergy over time. As there is no laboratory parameter, which can accurately predict when clinical tolerance has been developed, controlled oral food challenges are the measure of choice. In this article, the current knowledge of predictors for the outcome of oral food challenges is reviewed and proposals for the daily practical work-up in the case of suspected food related clinical symptoms are presented.
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Affiliation(s)
- B Niggemann
- Department of Pediatric Pneumology and Immunology, University Children's Hospital Charité of Humboldt University, Berlin, Germany
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Mehl A, Verstege A, Staden U, Kulig M, Nocon M, Beyer K, Niggemann B. Utility of the ratio of food-specific IgE/total IgE in predicting symptomatic food allergy in children. Allergy 2005. [PMID: 15969684 DOI: 10.1111/j.1398‐9995.2005.00806.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Double-blind, placebo-controlled food challenges are time-consuming, expensive and not without risk to patients. Therefore, an in vitro test that could accurately diagnose food allergy would be of great value. OBJECTIVE To evaluate the utility of the ratio of specific immunoglobulin E (IgE)/total IgE compared with specific IgE (sIgE) alone in predicting symptomatic food allergy. METHODS We retrospectively analysed 992 controlled oral food challenges performed in 501 children (median age 13 months). The ratio of sIgE/total IgE was calculated and tested for correlation with the outcome of food challenges. Receiver operator characteristics (ROC)-curves were performed; predicted probabilities and predictive decision points were calculated. RESULTS A significant correlation was found between the ratio and the outcome of food challenges for cow's milk (CM), hen's egg (HE), and wheat, but not for soy. The ROC and predicted probability curves as well as sensitivity and specificity of the decision points of the ratio were similar to those of sIgE levels for CM, HE and wheat. CONCLUSION In view of the greater effort needed to determine the ratio, without benefit compared with the sIgE alone, the calculation of the ratio of sIgE/total IgE for diagnosing symptomatic food allergy offers no advantage for CM, HE, wheat or soy. For the majority of cases controlled oral food challenges still remain the method of choice.
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Affiliation(s)
- A Mehl
- Department of Pediatric Pneumology and Immunology, University Children's Hospital Charité of Humboldt University, Berlin, Germany
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Celik-Bilgili S, Mehl A, Verstege A, Staden U, Nocon M, Beyer K, Niggemann B. The predictive value of specific immunoglobulin E levels in serum for the outcome of oral food challenges. Clin Exp Allergy 2005; 35:268-73. [PMID: 15784102 DOI: 10.1111/j.1365-2222.2005.02150.x] [Citation(s) in RCA: 271] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Specific serum IgE is considered as one of the important diagnostic measures in the diagnostic work-up of food allergy. OBJECTIVE To evaluate the role of specific serum IgE in predicting the outcome of oral food challenges, and to determine threshold concentrations of specific serum IgE that could render double-blind, placebo-controlled food challenges unnecessary. METHODS In 501 children (median age 13 months), 992 controlled oral challenges were performed with cow's milk (CM), hen's egg (HE), wheat and soy. 440/501 (88%) children suffered from atopic dermatitis. For all children, specific IgE concentrations in serum were determined. Sensitivity, specificity, positive and negative predictive values, receiver operator characteristics-curves as well as predictive decision points were calculated. RESULTS Four hundred and forty-five out of 992 oral food challenges with allergens were assessed as positive. Sensitivity of specific serum IgE was 97% for HE, 83% for CM, 69% for soy, and 79% for wheat. Specificity was 51% for HE, 53% for CM, 50% for soy, and 38% for wheat. Calculating 90%, 95% and 99% predicted probabilities using logistic regression revealed predictive decision points of 6.3, 12.6, and 59.2 kU/L for HE, respectively. Subdividing our children in those of below or above 1 year of age resulted in a markedly different predicted probability for HE. For CM, only the 90% predicted probability (88.8 kU/L) could be calculated. No decision points could be determined for CM, wheat and soy. CONCLUSION In general, specific serum IgE levels showed a correlation with the outcome of positive oral food challenges for CM and HE. Meaningful predictive decision points can be calculated for HE, which may help to avoid oral food challenges in some cases. However, data need to be ascertained for each allergen separately. Furthermore, the age of the patient population under investigation must also be taken into account.
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Affiliation(s)
- S Celik-Bilgili
- Department of Pediatric Pneumology and Immunology, University Children's Hospital Charité of Humboldt University, DE-13353 Berlin, Germany
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Heine R, Verstege A, Mehl A, Staden U, Rolinck-Werninghaus C, Niggemann B. Standardizing the interpretation of atopy patch testing to food in children. J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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