上海口腔医学最新文献

{"title":"[Clinical study on guiding parents to promote oral health of pre-school children through self-made oral science video].","authors":"Shi-Yun Zhang, Jia-Lin Zhu, Yi-Lei Zhou, Wei-Fang Lu, Hong-Ru Su","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the clinical effect of self-made oral science video on guiding parents to promote oral health of pre-school children, and to explore a more effective new technology in oral hygiene education.</p><p><strong>Methods: </strong>One hundred and four 3-6 years old children with early childhood caries from Shanghai Xuhui District Dental Center were randomly recruited and divided into intervention group(n=52) and control group (n=52) during July to September 2022. At recruitment and 1 month after recruitment, the control group received routine oral health education, while the intervention group parents watched self-made oral health video and received routine oral health education. Plaque index (PLI), decayed missing filled tooth surface (dmfs) as well as oral health knowledge, attitude, practice(KAP) score of parents were compared between the two groups 1 and 6 months after recruitment.SPSS 26.0 software package was used for statistical analysis of the data.</p><p><strong>Results: </strong>At 1 and 6 months after recruitment, the KAP score of intervention group （86.445±7.156, 85.694±5.880）was significantly higher than that of the control group [82.571(77.286, 88.142)，81.853±7.482]（P＜0.05）. The PLI of intervention group [2.014±0.403, 1.895(1.250, 2.100)] was significantly lower than that of the control group（P＜0.05）. There was no significant difference of dmfs between the intervention group and control group(P＞0.05).</p><p><strong>Conclusions: </strong>As a new oral hygiene education technology, self-made oral science video is effective on improving oral health condition of pre-school children and the KAP condition of their parents.</p>","PeriodicalId":21709,"journal":{"name":"上海口腔医学","volume":"33 5","pages":"500-505"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142886055","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":"[Safety of closed traction appliance in the treatment of impacted anterior teeth and its effect on pulp blood flow and masticatory function].","authors":"Qi Zhu, Wei Zhao, Hua-Ying Wu","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To analyze the safety of closed traction appliance in the treatment of impacted anterior teeth and its effect on pulp blood flow and masticatory function.</p><p><strong>Methods: </strong>A total of 80 patients with impacted anterior teeth who received treatment from January 2017 to December 2022 were selected, and randomly divided into experimental group and control group with 40 cases in each group. The two groups of patients were treated with occlusion adjustment and orthodontic traction. Closed traction was used in the experimental group, while open traction was used in the control group. The clinical efficacy, treatment duration, chewing ability, root length, periroot bone density, dental aesthetic score, pulp blood flow at different time points and the occurrence of adverse events were compared between the two groups. Statistical analysis was performed with SPSS 22.0 software package.</p><p><strong>Results: </strong>The total effective rate was 95.00% in the experimental group and 90.00% in the control group, with no significant difference(P＞0.05). There was significant difference in traction eruption time and orthodontic time between the two groups(P＜0.05). There were significant differences in masticatory efficiency, bite force and masticatory pain score between the two groups before and after treatment(P＜0.05). There was no significant difference in root length and periroot bone density between the two groups before and after treatment(P＞0.05). There was no significant difference in white aesthetic score between the two groups before and after treatment(P＞ 0.05), but there was significant difference in red aesthetic score between the two groups before and after treatment(P＜0.05). There was no significant difference in pulp blood flow between the two groups at each time point(P＞0.05). At T1, the pulp blood flow reached its peak higher than T0; at T2, it rapidly decreased below T1 but higher than T0; at T3, it gradually decreased below T1 and T2 but higher than T0(P＜0.05). The incidence of adverse events in the experimental group was 10.00% compared with 27.50% in the control group, and the difference was statistically significant(P＜0.05).</p><p><strong>Conclusions: </strong>Both closed traction and open traction correction can effectively treat the impacted anterior teeth, and the two methods have no significant effects on root length, surrounding bone density and pulp blood flow. Although the treatment time of closed traction is slightly longer, it is more beneficial to improve patients' masticatory ability, and has high aesthetics and safety, which is worthy of clinical promotion.</p>","PeriodicalId":21709,"journal":{"name":"上海口腔医学","volume":"33 5","pages":"517-522"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142885372","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":"[Analysis of root development of maxillary inverted impacted central incisor before and after orthodontic traction by CBCT].","authors":"Chuan-Jie Yan, Wei Zhang, Zhi-Fang Chen, Jian-Hua Wu","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To investigate the changes of root development before and after orthodontic traction of maxillary inverted impacted central incisors using CBCT and Mimics software.</p><p><strong>Methods: </strong>Ten patients, who had a maxillary inverted impacted central incisor, were treated using a modified movable retractor combined with surgical eruption. Cone-beam computed tomography(CBCT) was taken before and after treatment. Mimics 21.0 software was used to reconstruct the impacted central incisors (the impacted teeth group) and the contralateral namesake teeth (the contralateral group) before and after treatment, and the tooth volume and surface area were calculated by the software. SPSS 26.0 software package was used for paired t test, to evaluate the root development before and after treatment.</p><p><strong>Results: </strong>All 10 patients were successfully treated,and the mean duration was (16.10±4.46) months. After treatment, the volume and surface area of teeth in the impacted teeth group were significantly increased compared with those before treatment(P＜0.01). The volume and surface area of the teeth before and after traction were significantly lower than those of the contralateral group(P＜0.01). However, during the treatment, there were no significant differences in the increase of tooth volume and surface area between the two groups(P＞0.05).</p><p><strong>Conclusions: </strong>Modified movable retractor combined with surgical eruption can promote root development of maxillary inverted impacted tooth, which is a safe and reliable treatment method.</p>","PeriodicalId":21709,"journal":{"name":"上海口腔医学","volume":"33 5","pages":"529-532"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142885912","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":"[Construction and evaluation of the regional Children's oral health network platform].","authors":"Xiao-Ling Wang, Fei Sun, Ying-Ying Zhou","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To explore a more effective comprehensive prevention and treatment model for children's oral health by constructing a health network platform that integrates medical information evaluation, interaction, monitoring, and prevention with oral health management as the core.</p><p><strong>Methods: </strong>The database of Shaoxing Children's Oral Health Management Network Platform was established. The oral health survey and information entry of 7 042 second-grade children in primary school in Yuecheng District from 2021 to 2022 were conducted. An open randomized controlled clinical trial was designed, with 3 472 of 7 042 children randomly assigned to the platform management group and 3 570 to the control group. One year later, oral examinations were conducted again on two groups of children, and the correlation between oral examination indicators between the two groups was statistically analyzed using SPSS 25.0 software package.</p><p><strong>Results: </strong>There was significant difference between the two groups in the mean number of newly added deciduous caries decayed- missing-filled teeth(dmft), deciduous caries decayed teeth (dt), deciduous caries missing teeth(mt), and deciduous caries filled teeth(ft) after one year(P＜0.05). The newly added rates of caries, gingival bleeding, calculus detection, and malocclusion between the two groups were lower in the platform group than in the control group, with a significant difference(P＜0.05).</p><p><strong>Conclusions: </strong>To the prevention and treatment of oral diseases, intelligence has become more and more indispensable and important. Building a network platform for oral health is an effective way to promote oral health level.</p>","PeriodicalId":21709,"journal":{"name":"上海口腔医学","volume":"33 5","pages":"506-511"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142885985","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":"[Evaluation of the efficacy of 70% ethanol in removing calcium hydroxide in curved root canals].","authors":"Yan-Yan Han, Tian-Tian Wu, Hong He","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the efficacy of micro-computed tomography(Micro-CT) in removing calcium hydroxide from posterior curved root canals.</p><p><strong>Methods: </strong>Twenty molar teeth (48 root canals) extracted at the Department of General Dentistry, Shanghai Ninth People's Hospital between December 2023 and February 2024 were collected. After preparing by Ni-TI instruments M3 according to standard root canal treatment procedures, calcium hydroxide was injected into the root canals. One week later, the samples were randomly divided into 6 groups(n=8) based on different irrigation methods: sodium hypochlorite group, 17% EDTA group and 70% ethanol group. Each group was further divided into 2 subgroups with or without sonic vibration. Micro-CT was used to reconstruct the root canal system before and after irrigation, with independent root canals marked using different colors. The root canals were categorized as upper segment, middle segment, and apical segment. The volume of calcium hydroxide in each segment was calculated, and the clearance rate of calcium hydroxide in each segment was compared. SPSS 19.0 software package was used for statistical analysis.</p><p><strong>Results: </strong>Calcium hydroxide could not be completely removed from any of the 6 groups tested. The removal efficiency of calcium hydroxide by ethanol in the apical region was higher than that achieved by other two groups(P＜0.05). In the ethanol subgroup, there was no significant difference in removal efficiency between sonic vibration and syringe techniques(P＞0.05).</p><p><strong>Conclusions: </strong>Using 70% ethanol enhances the removal efficiency of calcium hydroxide in curved root canal.</p>","PeriodicalId":21709,"journal":{"name":"上海口腔医学","volume":"33 5","pages":"461-465"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142886123","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":"[Comparison of clinical efficacy between autologous block bone graft and GBR in horizontal bone augmentation based on Mimics 3D reconstruction].","authors":"Xiu-Quan He, Yu-Shan Li, Yu-Hao Shui, Kun Liu","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To compare the clinical efficacy of autologous bone block graft and guided bone regeneration (GBR) in horizontal bone augmentation.</p><p><strong>Methods: </strong>A total of 42 patients were included and divided into two groups. Group A included 20 patients, in whom autologous bone block graft was performed. Group B included 22 patients, in whom GBR was conducted. The incidence of complications, pain degree, secondary bone graft rate, bone width increment, bone resorption rate, marginal bone resorption and implant success rate after 1 year of restoration were recorded and evaluated. SPSS 26.0 soft ware package was used for data analysis.</p><p><strong>Results: </strong>There was no significant difference in implant success rate, incidence of complications and the rate of secondary bone grafting between the two groups. The pain degree in group A was significantly higher than that in group B(P＜0.05). The increment of bone width at 2 mm below the crest in group A was more than that in group B(P＜0.05). There was no significant difference in increment of bone width between 6 mm and 10 mm below the crest. The absorption rate of group A was significantly lower than that of group B at 2 mm below the crest(P＜0.05), while the difference was not statistically significant at 6 mm and 10 mm below the crest. There was no significant difference in marginal bone resorption between the two groups 1 year after restoration.</p><p><strong>Conclusions: </strong>For horizontal bone defects, autologous bone block graft has a better bone contour at the crest than GBR. The amount of marginal bone resorption in two groups is similar after 1 year of restoration.</p>","PeriodicalId":21709,"journal":{"name":"上海口腔医学","volume":"33 5","pages":"486-491"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142886072","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":"[Application of periodontal microsurgery in periodontal accelerated osteogenic orthodontics].","authors":"Jia-Yu Zhang, Na Liu, Jin-Yang Li, Yue Chen","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To investigate the application value of periodontal microsurgery in accelerated osteogenic orthodontics (PAOO).</p><p><strong>Methods: </strong>A total of 100 patients with the need of PAOO surgery before orthodontic treatment due to the lack of alveolar bone in the mandibular anterior area were selected and randomly divided into microsurgery group and control group with 50 cases in each group. Preoperative CBCT was used to measure the thickness and height of the alveolar bone as well as the gingival thickness. The gingival recession height was measured using periodontal probe. The pain level of the patients was evaluated immediately, 3, 7 and 14 days after surgery while the wound healing was recorded 14 days after surgery. The aforementioned indexes were recorded again 6 months after surgery. GraphPad Prism 5.0 software package was used for data analysis.</p><p><strong>Results: </strong>The pain level of the microsurgery group were significantly lower than those of the control group at different time points after surgery. All the patients in the microsurgery group achieved healing by first intention 14 days after surgery. In addition, 6 months after surgery, the increase in alveolar bone thickness and the improvement of gingival recession in the microsurgery group were significantly better than those in the control group, thus achieving higher patient satisfaction.</p><p><strong>Conclusions: </strong>Periodontal microsurgery can facilitate the improvement of the surgical effect of PAOO, which has a promising value in the clinical application.</p>","PeriodicalId":21709,"journal":{"name":"上海口腔医学","volume":"33 5","pages":"523-528"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142886040","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":"[Facial soft tissue changes after full-arch implant-supported fixed prostheses restoration in patients with edentulous maxilla].","authors":"Yun Zhang, Xing-Ru Tao, Feng Wang, De-Dong Yu, Yi-Qun Wu","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To investigate the changes of nasolabial soft tissues before and after full-arch implant supported fixed restoration in maxillary edentulous patients and the influencing factors of the changes.</p><p><strong>Methods: </strong>Fifty patients who underwent full-arch implant fixed restoration in the Department of Second Dental Center of Shanghai Ninth People's Hospital from January 2016 to July 2023 were selected. Patient's medical history, CBCT, and three-dimensional facial scan data were collected before and after restoration. Paired t test or Wilcoxon signed-rank test were used to compare the changes in soft tissues before and after restoration. The correlation between changes and patient's basic information, implant protocol and residual bone parameters were analyzed using bivariate correlation analysis. Akaike information criterion was used to select the multivariate linear regression model of each soft tissue index change.</p><p><strong>Results: </strong>After implant fixed restoration, the upper lip height (sn-sto), the upper vermillion height (ls-sto), and the upper vermilion area (UVA) significantly increased (P＜0.01), while the distance from ls to the E-line (ls-E) significantly decreased (P＜0.01), the nasolabial angle (∠cm-sn-ls) significantly decreased (P＜0.01), and the cutaneous upper lip height(sn-ls) did not change significantly(P＞0.05). Except for sn-sto and sn-ls, the remaining soft tissue changes were positively correlated with age (P＜0.01). Other residual bone parameters, implant protocol, and gender were not significantly related to each soft tissue change. Multivariate stepwise regression analysis showed that each soft tissue change was broadly related to age and preoperative soft tissue condition, and partially related to bone morphology.</p><p><strong>Conclusions: </strong>The nasolabial soft tissues of maxillary edentulous patients change significantly after implant fixed restoration, mainly the expansion and protrusion of the red part of the lip. The changes in facial soft tissues are primarily related to the patient's age and pre-existing soft tissue condition, with older patients and those with more atrophic original soft tissue morphology observing more apparent improvements in fullness. The change in lip prominence is also related to the residual bone shape.</p>","PeriodicalId":21709,"journal":{"name":"上海口腔医学","volume":"33 4","pages":"381-386"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142547229","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":"[Investigation and analysis of oral health status of children with autism and their parents' cognition].","authors":"Jun-Yan Tan, Li Li, Yu-E Yang, Wei Wang, Sun Wang","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To understand the cognitive level of parents of children with autism towards their oral health behaviors and oral health care, and to provide assistance in developing better oral health plans for children with autism.</p><p><strong>Methods: </strong>Totally 117 children and parents with autism who visited our hospital from January to December 2018 were selected as the experimental group,while 121 non-autistic children during the same period were selected as the control group, the children's oral hygiene was checked. Questionnaire survey was conducted on the oral health behaviors of pediatric patients, including daily brushing frequency, use of toothpaste, assistance from parents in brushing teeth, and frequency of snacking. At the same time, standardized measures were adopted to evaluate the oral health knowledge of parents, obtain their level of understanding oral health-related knowledge, and record the basic situation of parents. SPSS 21.0 software package was used for statistical analysis.</p><p><strong>Results: </strong>The proportion of children with autism who have dental caries and periodontal health problems was relatively high, at 74.36% and 52.14%, respectively. Most pediatric patients had poor oral health behaviors, with a low proportion of brushing teeth ≥2 times per day and consistently using toothpaste, accounting for 17.09% and 13.68%, respectively. In addition, the score of oral health knowledge of parents of children in the experimental group [(6.40±2.55)] was lower than those in the control group [(6.95±2.47)], but there was no significant difference (P＞0.05). 93.16% of the children in the experimental group were taken care of full-time by their mother (72.65%) or father (20.51%), and most of the patients's income was not high. The main caregivers and their education level, family income in the control group were significantly different from those in the experimental group (P＜0.05). Factors affecting the oral health of autism patients included brushing habits, primary caregivers and parents' highest level of education.</p><p><strong>Conclusions: </strong>Parents of autistic children have a poor understanding of their children's oral health behaviors, as well as health care. Therefore, education of oral health towards the parents of children with autism should be strengthened with the aim of improving their awareness of oral health and jointly maintaining their health.</p>","PeriodicalId":21709,"journal":{"name":"上海口腔医学","volume":"33 4","pages":"403-406"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142547230","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":"[Effect of 2 kinds of appliances on anterior tooth root and alveolar bone in patients with mild to moderate overcrowding of ClassⅠmalocclusion].","authors":"Mei-Ling Huo, Ying Lei, Xin Xin, Ying Zhang, Rui-Mei Wang","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Purpose: </strong>To analyze the effects of fixed appliance and invisible appliance without bracket on anterior tooth root and alveolar bone in patients with mild to moderate overcrowding of Class Ⅰmalocclusion.</p><p><strong>Methods: </strong>A total of 120 patients with mild to moderate dental crowding were selected from January 2018 to February 2022,and divided into control group and experimental group by random number table method, with 60 cases in each group. The control group was treated with traditional fixed appliance, while the experimental group was treated with invisible appliance without bracket. Cone-beam CT(CBCT) was taken before and 12 months after treatment to measure the root length and alveolar bone height and thickness of maxillary central incisor teeth, height of alveolar bone of anterior teeth lip and lingual side and cusp teeth in both groups. Statistical analysis was performed with SPSS 22.0 software package.</p><p><strong>Results: </strong>The root length changes of maxillary central incisor, lateral incisor and cusp teeth in the experimental group were significantly lower than those in the control group before and after treatment(P＜0.05). The alveolar bone height changes in the labial side and lingual palatine side of upper anterior teeth, labial side and lingual palatine side of inferior anterior teeth in the experimental group before and after treatment were significantly lower than those in the control group(P＜0.05). The thickness changes of labiolingual alveolar bone at the neck, middle root and apex of upper and inferior anterior teeth in the experimental group were significantly lower than those in the control group before and after treatment(P＜0.05).</p><p><strong>Conclusions: </strong>Compared with fixed appliance, invisible appliance without bracket can reduce root resorption and the loss of alveolar bone height and thickness in the treatment of Class I patients with mild to moderate dental crowding.</p>","PeriodicalId":21709,"journal":{"name":"上海口腔医学","volume":"33 4","pages":"407-410"},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142547210","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}