Journal of orofacial orthopedics = Fortschritte der Kieferorthopädie : Organ/official journal Deutsche Gesellschaft für Kieferorthopädie最新文献

{"title":"Mitteilungen der DGKFO.","authors":"","doi":"10.1007/s00056-022-00400-y","DOIUrl":"https://doi.org/10.1007/s00056-022-00400-y","url":null,"abstract":"","PeriodicalId":149550,"journal":{"name":"Journal of orofacial orthopedics = Fortschritte der Kieferorthopädie : Organ/official journal Deutsche Gesellschaft für Kieferorthopädie","volume":" ","pages":"286-290"},"PeriodicalIF":1.7,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9219389/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40268503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of the three-dimensional printing technique and printing layer thickness on model accuracy.","authors":"Zhe-Chen Zhang,&nbsp;Pei-Lun Li,&nbsp;Feng-Ting Chu,&nbsp;Gang Shen","doi":"10.1007/s00056-019-00180-y","DOIUrl":"https://doi.org/10.1007/s00056-019-00180-y","url":null,"abstract":"<p><strong>Objective: </strong>The accuracies of three-dimensional (3D) printed dental models using various digital light processing (DLP) and stereolithography (SLA) printers at different thicknesses were compared.</p><p><strong>Materials and methods: </strong>Based on digital dental models (originally digitized using R700; 3Shape, Copenhagen, Denmark), physical dental models were printed using three types of DLP printers: (1) EvoDent (UnionTec, Shanghai, China) with layer thicknesses of 50 μm and 100 μm; (2) EncaDent (Encashape, WuXi, China) with layer thicknesses of 20, 30, 50 and 100 μm; (3) Vida HD (Envisioned, Dearborn, MI, USA) with layer thicknesses of 50 and 100 μm. Models with the SLA printer Form 2 (Formlabs, Somerville, MA, USA) were printed with layer thicknesses of 25, 50 and 100 μm. All 22 printed models were converted to digital dental models using a D2000 model scanner (3 Shape, Copenhagen, Denmark) and compared three-dimensionally to the source files using Geomagic Qualify 12.0 (3D Systems, Rock Hill, SC, USA).</p><p><strong>Results: </strong>The printing accuracy of all printers was higher at 50 μm. When the layer thickness was set at 100 μm, the printing speed and printing accuracy of DLP printer were both superior to those of the SLA printer. In all groups, the EvoDent 50 μm group had the highest consistency with the source files (mean absolute deviation of 0.0233 mm in the maxilla and 0.0301 mm in the mandible). While the accuracy of Form 2 100 μm group was the lowest (mean absolute deviation of 0.0511 mm in the maxilla and 0.0570 mm in the mandible).</p><p><strong>Conclusion: </strong>For the 3D printers studied, 50 μm was the optimum layer thickness for DLP technology, and the printing accuracy using SLA technology increased with decreasing layer thickness. The DLP technology also had higher printing accuracy at a layer thickness of 100 μm. EvoDent 50 μm had the highest and Form 2 100 μm the lowest printing accuracy.</p>","PeriodicalId":149550,"journal":{"name":"Journal of orofacial orthopedics = Fortschritte der Kieferorthopädie : Organ/official journal Deutsche Gesellschaft für Kieferorthopädie","volume":" ","pages":"194-204"},"PeriodicalIF":1.7,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s00056-019-00180-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40450979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Methods to evaluate compliance of patients with removable appliances-survey results.","authors":"H Meyer-Gutknecht,&nbsp;U Fritz,&nbsp;T C Schott","doi":"10.1007/s00056-013-0202-8","DOIUrl":"https://doi.org/10.1007/s00056-013-0202-8","url":null,"abstract":"<p><strong>Objectives: </strong>Are removable appliances still being routinely used in orthodontic offices? Which methods do clinicians use to assess compliance with wear requirements, and how effective are these methods considered to be?</p><p><strong>Subjects and methods: </strong>A questionnaire inquiring about types of treatment, methods of assessing patient compliance with removable appliances, and the perceived effectiveness of these methods was mailed to a sample of 375 members of the German Orthodontic Society (\"Deutschen Gesellschaft für Kieferorthopädie\", DGKFO).</p><p><strong>Results: </strong>The rate of returned questionnaires was 29%. Almost all respondents (99%) indicated that they used removable appliances and reported having a \"relatively high\" proportion of patients currently undergoing such treatment. The most widely used methods of compliance assessment were questioning patients and parents (96%) and examining clinical parameters associated with the dentition and the appliance's fit (95-100%). While these parameters were considered \"highly effective\", questioning the patients and parents was regarded as \"less effective\" despite its frequent application.</p><p><strong>Conclusion: </strong>Removable appliances continue to be a standard method of orthodontic treatment. While patient compliance with wear requirements is mainly assessed via indirect clinical methods, the effectiveness of these parameters remains unclear.</p>","PeriodicalId":149550,"journal":{"name":"Journal of orofacial orthopedics = Fortschritte der Kieferorthopädie : Organ/official journal Deutsche Gesellschaft für Kieferorthopädie","volume":" ","pages":"144-53"},"PeriodicalIF":1.7,"publicationDate":"2014-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s00056-013-0202-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40283520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Precision of indirect bonding of lingual brackets using the Quick Modul System (QMS)®.","authors":"Katharina Schubert,&nbsp;Thomas Halbich,&nbsp;Paul-Georg Jost-Brinkmann,&nbsp;Ralf Müller-Hartwich","doi":"10.1007/s00056-012-0122-z","DOIUrl":"https://doi.org/10.1007/s00056-012-0122-z","url":null,"abstract":"<p><strong>Objectives: </strong>Almost all common laboratory procedures for lingual orthodontic appliances use indirect bonding of brackets via transfer trays. Ensuring precise transfer of these bracket positions to the oral cavity is especially important, as subsequent manual adjustments are challenging in lingual orthodontics and even minor errors of bracket placement may result in considerably deviating tooth positions. The purpose of this study was to evaluate in vivo the precision of indirect bonding of lingual brackets using the \"Quick Modul System\" (QMS®; Halbich Lingualtechnik, Berlin, Germany).</p><p><strong>Materials and methods: </strong>The study included eight consecutive patients treated with lingual brackets. After placing the brackets on a setup cast, the resultant positions were digitized with an optical scanner (OraScanner®; OraMetrix, Richardson, TX, USA). Individual transfer copings (QMS®) were used to transfer the brackets to the mouth, followed by intraoral scanning and virtual superimposition to analyze how much the intraoral bracket positions deviated from the positions on the cast.</p><p><strong>Results: </strong>Translational deviations added up to a mean transfer error of 0.12 mm in the mesiodistal, 0.13 mm in the orovestibular, and 0.10 mm in the vertical planes. Mean deviations in rotational directions amounted to 2.20° of inclination, 3.21° of angulation, and 2.29° of rotation.</p><p><strong>Conclusion: </strong>The transfer system investigated in this study is capable of transferring bracket positions with good clinical precision. No differences between the bracket types and both modifications of the transfer copings were noted.</p>","PeriodicalId":149550,"journal":{"name":"Journal of orofacial orthopedics = Fortschritte der Kieferorthopädie : Organ/official journal Deutsche Gesellschaft für Kieferorthopädie","volume":" ","pages":"6-17"},"PeriodicalIF":1.7,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s00056-012-0122-z","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40220014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Class II treatment by extraction of maxillary first molars or Herbst appliance: dentoskeletal and soft tissue effects in comparison.","authors":"Johan Willem Booij,&nbsp;Juliane Goeke,&nbsp;Ewald Maria Bronkhorst,&nbsp;Christos Katsaros,&nbsp;Sabine Ruf","doi":"10.1007/s00056-012-0112-1","DOIUrl":"https://doi.org/10.1007/s00056-012-0112-1","url":null,"abstract":"<p><strong>Aim: </strong>To compare dentoskeletal and soft tissue treatment effects of two alternative Class II division 1 treatment modalities (maxillary first permanent molar extraction versus Herbst appliance).</p><p><strong>Methods: </strong>One-hundred-fifty-four Class II division 1 patients that had either been treated with extractions of the upper first molars and a lightwire multibracket (MB) appliance (n = 79; 38 girls, 41 boys) or non-extraction by means of a Herbst-MB appliance (n = 75; 35 girls, 40 boys). The groups were matched on age and sex. The average age at the start of treatment was 12.7 years for the extraction and for 13.0 years for the Herbst group. Pretreatment (T1) and posttreatment (T2) lateral cephalograms were retrospectively analyzed using a standard cephalometric analysis and the sagittal occlusal analysis according to Pancherz.</p><p><strong>Results: </strong>The SNA decrease was 1.10° (p = 0.001) more pronounced in the extraction group, the SNB angle increased 1.49° more in the Herbst group (p = 0.000). In the extraction group, a decrease in SNB angle (0.49°) was observed. The soft tissue profile convexity (N-Sn-Pog) decreased in both groups, which was 0.78° more (n. s.) pronounced in the Herbst group. The nasolabial angle increased significantly more (+ 2.33°, p = 0.025) in the extraction group. The mechanism of overjet correction in the extraction group was predominantly dental (65% dental and 35% skeletal changes), while in the Herbst group it was predominantly skeletal (58% skeletal and 42% dental changes) in origin.</p><p><strong>Conclusion: </strong>Both treatment methods were successful and led to a correction of the Class II division 1 malocclusion. Whereas for upper first molar extraction treatment more dental and maxillary effects can be expected, in case of Herbst treatment skeletal and mandibular effects prevail.</p>","PeriodicalId":149550,"journal":{"name":"Journal of orofacial orthopedics = Fortschritte der Kieferorthopädie : Organ/official journal Deutsche Gesellschaft für Kieferorthopädie","volume":" ","pages":"52-63"},"PeriodicalIF":1.7,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s00056-012-0112-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40220010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Systematic review on self-ligating vs. conventional brackets: initial pain, number of visits, treatment time.","authors":"Ales Čelar,&nbsp;Magdalena Schedlberger,&nbsp;Petra Dörfler,&nbsp;Michael Bertl","doi":"10.1007/s00056-012-0116-x","DOIUrl":"https://doi.org/10.1007/s00056-012-0116-x","url":null,"abstract":"<p><strong>Objective: </strong>Meta-analysis of differences between conventional and self-ligating brackets concerning pain during tooth movement, number of patient visits, total treatment duration, and ligation times.</p><p><strong>Materials and methods: </strong>Online search in Medline, Embase, and Central focused on randomized clinical trials and controlled clinical studies published between 1996 and 2012.</p><p><strong>Results: </strong>Four studies on pain met our inclusion criteria, two on the number of appointments, two on overall treatment time but none on ligation times. Pain levels did not differ significantly between patients treated with conventional or self-ligating brackets after 4 h, 24 h, 3 and 7 days. The number of appointments and total treatment times revealed no significant differences between self-ligating and conventional brackets.</p><p><strong>Conclusion: </strong>The lack of significant overall effects apparent in this meta-analysis contradicts evidence-based statements on the advantages of self-ligating brackets over conventional ones regarding discomfort during initial orthodontic therapy, number of appointments, and total treatment time. Due to the limited number of studies included, further randomized controlled clinical trials are required to deliver more data and to substantiate evidence-based conclusions on differences between the two bracket types considering orthodontic pain, number of visits, treatment, and ligation times.</p>","PeriodicalId":149550,"journal":{"name":"Journal of orofacial orthopedics = Fortschritte der Kieferorthopädie : Organ/official journal Deutsche Gesellschaft für Kieferorthopädie","volume":" ","pages":"40-51"},"PeriodicalIF":1.7,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s00056-012-0116-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40220011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"What's new on the dental scene? Browsing through the dental literature.","authors":"J C Türp","doi":"10.1007/s00056-012-0118-8","DOIUrl":"https://doi.org/10.1007/s00056-012-0118-8","url":null,"abstract":"","PeriodicalId":149550,"journal":{"name":"Journal of orofacial orthopedics = Fortschritte der Kieferorthopädie : Organ/official journal Deutsche Gesellschaft für Kieferorthopädie","volume":" ","pages":"4-5"},"PeriodicalIF":1.7,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s00056-012-0118-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40220012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Orthodontic treatment of patients medicated with bisphosphonates-a clinical case report].","authors":"Elena Krieger,&nbsp;Bernd d'Hoedt,&nbsp;Herbert Scheller,&nbsp;Collin Jacobs,&nbsp;Christian Walter,&nbsp;Heinrich Wehrbein","doi":"10.1007/s00056-012-0120-1","DOIUrl":"https://doi.org/10.1007/s00056-012-0120-1","url":null,"abstract":"<p><strong>Introduction: </strong>Bisphosphonates (BP) are an established medication, e.g., for the prevention/therapy of osteoporosis. The effects of the changed bone metabolism for orthodontic treatments are unknown.</p><p><strong>Case report: </strong>A 66-year-old woman underwent a total oral rehabilitation. The therapy included (1) tooth extractions, (2) periodontal treatment, (3) insertion of dental implants, (4) provisional implant restorations, (5) orthodontic treatment, and (6) definite implant restorations. The orthodontic tooth movements were in- and retrusion of the upper frontal teeth, intrusion of the lower front teeth, using the dental implants as skeletal anchorage. After implant insertion and one month before beginning the orthodontic treatment, osteoporosis was diagnosed in this patient and, without notification to our facility, BP treatment was initiated by her general practitioner (alendronate oral, 70 mg/week), with an overall duration of intake of 7 months. After 13 months, the orthodontic treatment was successfully accomplished; however enlarged periodontal gaps, sclerotic bone areas, and mild apical root resorptions of the upper frontal teeth were found in this patient.</p><p><strong>Conclusion: </strong>Currently, there are no recommendations for orthodontic patients undergoing BP therapy. Orthodontic tooth movement in this low-risk patient with a short duration of intake and a low-dose BP medication was possible. Because of the reduced bone metabolism and the higher amount of side effects, the treatment should be performed with extremely light forces and frequent monitoring.</p>","PeriodicalId":149550,"journal":{"name":"Journal of orofacial orthopedics = Fortschritte der Kieferorthopädie : Organ/official journal Deutsche Gesellschaft für Kieferorthopädie","volume":" ","pages":"28-39"},"PeriodicalIF":1.7,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s00056-012-0120-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40220013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reaction of facial soft tissues to treatment with a Herbst appliance.","authors":"P Meyer-Marcotty,&nbsp;J Kochel,&nbsp;U Richter,&nbsp;F Richter,&nbsp;Angelika Stellzig-Eisenhauer","doi":"10.1007/s00056-011-0068-6","DOIUrl":"https://doi.org/10.1007/s00056-011-0068-6","url":null,"abstract":"<p><strong>Objective: </strong>The objective of this prospective longitudinal study was to investigate the reaction of facial soft tissues to treatment with a Herbst appliance. We aimed to quantify three-dimensionally (3D) the isolated effect of the Herbst appliance and volume changes in the lip profile.</p><p><strong>Patients and methods: </strong>The 3D data of the facial soft tissues of 34 patients with skeletal Class II (17 female and 17 male, mean age 13.5 ± 1.8 years) were prepared in a standardized manner immediately before (T1) and after (T2) treatment with a Herbst appliance. Anthropometric evaluation was carried out in sagittal and vertical dimensions. To quantify volume changes, pretherapeutic and posttherapeutic images were superimposed three-dimensionally and the difference volumes calculated. Following testing for normal distribution, a statistical analysis was carried out using the paired t test.</p><p><strong>Results: </strong>We observed ventral development of the soft tissues of the lower jaw with flattening of the profile curvature and anterior displacement of the sublabial region in a total of 27 patients. Anterior facial height was lengthened and the facial depth at the lower jaw increased. The largest percentage changes were noted in the lip profile, with a reduction in the red margin of the upper lip and an increase in lower lip height. We also observed a reduction of the sublabial fold in conjunction with a simultaneous increase in volume.</p><p><strong>Conclusion: </strong>The influence of the Herbst appliance on the facial soft tissues is expected to result in a positive treatment outcome, particularly in patients with a convex profile, a retrusive lower lip, and a marked sublabial fold. We observed a broad clinical spectrum of individual reactions in the facial soft tissues. It is, thus, not possible to detect a linear relationship between the Herbst treatment and soft tissue changes, making soft tissue changes difficult to predict.</p>","PeriodicalId":149550,"journal":{"name":"Journal of orofacial orthopedics = Fortschritte der Kieferorthopädie : Organ/official journal Deutsche Gesellschaft für Kieferorthopädie","volume":" ","pages":"116-25"},"PeriodicalIF":1.7,"publicationDate":"2012-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s00056-011-0068-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40141525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effectiveness of bionator therapy for Class II malocclusions: a comparative long-term study.","authors":"J Kochel,&nbsp;P Meyer-Marcotty,&nbsp;E Witt,&nbsp;A Stellzig-Eisenhauer","doi":"10.1007/s00056-011-0066-8","DOIUrl":"https://doi.org/10.1007/s00056-011-0066-8","url":null,"abstract":"<p><strong>Objective: </strong>The goal of this retrospective study was to examine the effectiveness of isolated bionator therapy in Class II patients both longitudinally and over the long term. We aimed to determine whether skeletal and/or dentoalveolar reactions differ in relationship to the Angle Class (II, Division 1 vs. II, Division 2).</p><p><strong>Patients and methods: </strong>A total of 50 juvenile patients with Class II malocclusion (♀ n = 26, ♂ n = 24) were included. A total of 24 patients presented an Angle Class II, Division 1 and 26 an Angle Class II, Division 2. We compared the patients' lateral cephalograms taken at the beginning of treatment (t1: 10.1 years), after active therapy (t2: 13.8 years), and at the end of retention (t3: 16.4 years) analyzing the following cephalometric parameters: SNA, SNB, ANB, ANB(ind), SNPog, Wits appraisal, U1-SN, U1-SpP, L1-MeGo, interincisal angle. Mean and standard deviations of each of the variables were calculated. Differences between t1-t2 and t2-t3 were tested for statistical significance. Changes in the variables were then analyzed biometrically for specific differences in terms of Angle Class (II, Division 1 vs. II, Division 2).</p><p><strong>Results: </strong>Between t1 and t2, SNB (p = 0.000) and SNPog (p = 0.000) increased significantly, as did ANB (p = 0.000), while the difference between ANB and ANB(ind) (p = 0.000) and Wits appraisal (p = 0.000) decreased significantly. The dentoalveolar variables U1-SN, U1-SpP, and the interincisal angle changed significantly in both groups. The inclination of the upper incisors was corrected by retrusion in the Class II, Division 1 and by protrusion in the Class II, Division 2 group. Only marginal changes in all variables between t2 and t3 were observed.</p><p><strong>Conclusion: </strong>A significant skeletal effect (even in long-time stability) through bionator treatment could be confirmed in this study of Class II, Divisions 1 and 2 patients. The desired effect on the upper front teeth was realized, and there was no appreciable dentoalveolar compensation in the mandible.</p>","PeriodicalId":149550,"journal":{"name":"Journal of orofacial orthopedics = Fortschritte der Kieferorthopädie : Organ/official journal Deutsche Gesellschaft für Kieferorthopädie","volume":" ","pages":"91-103"},"PeriodicalIF":1.7,"publicationDate":"2012-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s00056-011-0066-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40142164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}