T. Bakshi, S. Yakovlev, O. Topol’nitskiy, A. P. Gurgenadze
{"title":"Clinical application of \"Ethoxysclerol\" and \"Bleomycin\" in the management of retention cysts of the salivary glands in pediatric patients: case studies","authors":"T. Bakshi, S. Yakovlev, O. Topol’nitskiy, A. P. Gurgenadze","doi":"10.33925/1683-3031-2024-806","DOIUrl":"https://doi.org/10.33925/1683-3031-2024-806","url":null,"abstract":"Relevance. Retention cysts of the salivary glands are a frequent occurrence in dental practice. Traditional treatments, such as cystadenectomy and cystotomy, are commonly employed. However, these procedures are associated with postoperative complications, including recurrence, damage to adjacent structures (e.g., ducts of neighbouring salivary glands, blood vessels, and nerves), and inadvertent opening of the submandibular salivary gland capsule.Description of clinical cases. This paper presents clinical cases of four pediatric patients diagnosed with retention cysts of the salivary glands, treated at the Department of Pediatric Maxillofacial Surgery, Russian University of Medicine. All patients received treatment with \"Lauromacrogol-400\" (\"Ethoxysclerol\") and \"Bleomycin.\" In the postoperative period, no complications or adverse effects related to the administered drugs were observed. Follow-up examinations revealed no clinical manifestations of retention cysts or ultrasonographic evidence of cysts.Conclusions. Sclerotherapy using \"Ethoxysclerol\" and \"Bleomycin\" for the treatment of retention cysts of the salivary glands presents a viable minimally invasive alternative to conventional surgical methods, potentially mitigating the risks associated with more invasive procedures.","PeriodicalId":509861,"journal":{"name":"Pediatric dentistry and dental prophylaxis","volume":" 741","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141823439","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}
A. A. Tropina, M. V. Moseeva, L. P. Matveeva, O. S. Kovylina, E. V. Sterkhova
{"title":"The impact of probiotic supplementation on dental and general health metrics in pediatric populations","authors":"A. A. Tropina, M. V. Moseeva, L. P. Matveeva, O. S. Kovylina, E. V. Sterkhova","doi":"10.33925/1683-3031-2024-765","DOIUrl":"https://doi.org/10.33925/1683-3031-2024-765","url":null,"abstract":"Relevance. Acute respiratory infections account for over 90% of infectious diseases in children. These children are classified as frequently ill, representing a significant concern in contemporary pediatrics. The presence of odontogenic infections further depletes their immunity and acts as a persistent source of sensitisation for the child's body.Materials and methods. A clinical-laboratory longitudinal prospective study was conducted on 477 children aged 12 and 15 years. The children were categorised into groups based on their risk of developing caries (minimal, moderate, high). Oral health status was assessed using the DMF index, oral hygiene was evaluated using the OHI-S index, and periodontal tissue condition was assessed using the PMA index. The activity of cariogenic flora aggression enzymes was measured by the level of salivary sialidase. The child's health status was evaluated using the infection index and the recurrence index. The schoolchildren were recommended a course of a preparation consisting of a combination of the probiotic Streptococcus salivarius M18 (at least 5 x 10^8 CFU) and vitamin D3 (320 IU or 8 µg of vitamin D3) at a dosage of one tablet per day, taken sublingually, for two months twice a year.Results. The study identified moderate correlations between salivary sialidase levels and several indicators, including the gingivitis index, the quantity of dental plaque, and the increase in sialidase activity in saliva. The level of salivary sialidase is regarded as a marker for plaque formation and the extent of periodontal tissue inflammation. Comprehensive oral sanitation, coupled with the strategic use of immunoprophylactic agents, resulted in significant improvements in oral health indicators (OHI-S, PMA, caries reduction) and specific child health metrics (infection index, recurrence index). Additionally, there was a notable reduction in salivary sialidase levels. The method demonstrated the highest efficacy in 12-year-old children who were at high risk of developing caries.Conclusion. The obtained data should be considered when planning individual therapeutic and preventive measures for schoolchildren with varying risks of developing caries and differing overall health statuses. Probiotic-based preparations should be incorporated into these measures.","PeriodicalId":509861,"journal":{"name":"Pediatric dentistry and dental prophylaxis","volume":"121 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141820915","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":"Forecasting changes in oral hygiene levels using the API index with different orthodontic appliances","authors":"K. V. Fedorova, O. A. Gavrilova, A. M. Zatevalov","doi":"10.33925/1683-3031-2024-757","DOIUrl":"https://doi.org/10.33925/1683-3031-2024-757","url":null,"abstract":"Relevance. The prevalence of various types of orthodontic pathology among the Russian population is quite high. Depending on the region, malocclusion are registered in 30.9% to 76.5% of cases. The high prevalence of orthodontic pathology and the unresolved issues related to both the pathology itself and the presence of concomitant diseases indicate the necessity for personalized methods of prevention and treatment of malocclusion during both the primary and mixed dentitions, which in 70-84% of cases are treated using both removable and fixed orthodontic appliances.Materials and methods. An observational study was conducted to identify factors contributing to the increased intensity of caries among children aged 6 to 11 with orthodontic pathology. The study evaluated the characteristics of hygiene knowledge and skills, as well as the Approximal Plaque Index (API), in children using various orthodontic appliances. To assess hygiene knowledge levels, a survey was administered to two groups of children aged 6-11: those undergoing orthodontic treatment and those who visited the dental clinic for a routine check-up and were diagnosed with orthodontic pathology. The questionnaire included questions about the primary and supplementary tools and practices for daily oral hygiene, the frequency of hygiene activities, and the patients' awareness of the importance of professional oral hygiene.Results. Factors that statistically significantly influence the level of hygiene and the Approximal Plaque Index (API) were identified. A computer program was developed to forecast the dynamics of oral hygiene levels (based on the API index) when using different orthodontic appliances. An algorithm for predicting changes in the API hygiene index was created, considering the use of orthodontic appliances, oral status, adherence to hygiene procedures, presence of harmful habits, and dietary behaviors. Negative factors significantly impacting hygiene levels include bruxism and daily consumption of sweets, while positive factors include adherence to the recommended frequency and duration of tooth brushing (at least twice a day) and the use of a medium-hard toothbrush when permanent teeth are erupting. During orthodontic treatment, additional negative factors impacting hygiene status include gingival bleeding (gingivitis), lack of lip closure, and harmful habits. The study of changes in hygiene levels over one year of treatment with various orthodontic appliances (braces, Haas appliance, SPA) showed that the fixed Haas appliance for treating dental and maxillofacial anomalies is the most favorable orthodontic design for mixed dentition.Conclusion. Factors significantly affecting the level of oral hygiene have been identified. The dynamics of the API hygiene index with various orthodontic appliances have been established. The most favorable appliance for mixed dentition is the HAAS appliance for rapid palatal expansion.","PeriodicalId":509861,"journal":{"name":"Pediatric dentistry and dental prophylaxis","volume":"113 27","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141822151","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}
L. Kiselnikova, T. Zueva, T. V. Shurygina, F. Rusanov, K. I. Fedotov
{"title":"Evaluation of adhesive bond strength of restorative materials to hard tissues of deciduous teeth based on adhesion technique","authors":"L. Kiselnikova, T. Zueva, T. V. Shurygina, F. Rusanov, K. I. Fedotov","doi":"10.33925/1683-3031-2024-731","DOIUrl":"https://doi.org/10.33925/1683-3031-2024-731","url":null,"abstract":"Relevance. Treating caries in deciduous teeth remains one of the most complex challenges in pediatric dentistry. The bond strength between the enamel and dentin of deciduous teeth and restorative materials is crucial for the durability of hard tissue restorations in these teeth. This article evaluates the adhesive strength of restorative materials to the enamel and dentin of deciduous teeth using a universal adhesive system, both with and without prior etching with orthophosphoric acid.Purpose. To assess the adhesive bond strength of dental filling materials to the hard tissues of deciduous teeth, contingent upon the enamel and dentin etching techniques used with a universal adhesive system.Materials and methods. This study measured the adhesive strength of a composite filling material to the enamel and dentin of deciduous teeth using a universal adhesive system. The methods included both the absence of preliminary etching with 37% orthophosphoric acid (self-etch technique) and the application of preliminary etching of enamel and dentin with 37% orthophosphoric acid (total-etch technique). Sixty extracted deciduous teeth from children aged 6-8 years were used. Adhesive strength was assessed using the shear test of the filling material in cylinder form against the substrate surface.Results. Significant differences were observed in the adhesive bond strength of the composite material to the hard tissues of deciduous teeth when using 37% orthophosphoric acid before applying the adhesive system (total-etch technique) compared to no preliminary etching (self-etch technique). When filling carious lesions in deciduous teeth, if the defect is within the enamel, etching the surface with 37% orthophosphoric acid significantly (by two-fold) enhances the adhesive strength of the bond with the composite material using a universal adhesive. However, when repairing defects located deeper than the enamel layer in deciduous teeth, no statistically significant differences were observed in the adhesive strength with or without dentin etching. The optimal adhesive bond strength of composite materials to the hard tissues of deciduous teeth under laboratory conditions was attained by selectively etching the enamel with 37% orthophosphoric acid, followed by the application of a universal adhesive system to both the enamel and dentin.","PeriodicalId":509861,"journal":{"name":"Pediatric dentistry and dental prophylaxis","volume":"28 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141120927","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}
Y. Makedonova, A. G. Pavlova-Adamovich, E. Yarygina, A. V. Aleksandrov, T. V. Chizhikova, L. A. Devyatchenko, L. D. Veisgeim
{"title":"Comparative assessment of a phased debridement strategy amidst treatment for masticatory muscle spasticity in children with cerebral palsy","authors":"Y. Makedonova, A. G. Pavlova-Adamovich, E. Yarygina, A. V. Aleksandrov, T. V. Chizhikova, L. A. Devyatchenko, L. D. Veisgeim","doi":"10.33925/1683-3031-2024-722","DOIUrl":"https://doi.org/10.33925/1683-3031-2024-722","url":null,"abstract":"Relevance. Dental care for children diagnosed with cerebral palsy (CP) presents substantial challenges to dental practitioners. These children not only necessitate individualized care strategies but also face challenges in mouth opening due to masticatory muscle spasticity, which limits operational access during treatments. This study introduces a phased approach to debridement that is integrated with interventions aimed at alleviating hypertonia in the masticatory muscles through adaptive myogymnastics and the use of a pneumatic mouth expander.Materials and methods. A clinical and functional assessment of the orofacial region was conducted on 34 compliant CP patients aged 6-12 years, with the mean age being 9.6 ± 0.3 years. These assessments considered the extent of motor activity and movement limitations in daily activities. Follow-up evaluations were performed six months post-intervention.Results. The phased debridement plan demonstrated significant effectiveness, integrating diagnostic and therapeutic strategies with tailored visitation schedules based on the clinical conditions of the patients.Conclusion. Uniform diagnostic and therapeutic protocols are recommended to enhance dental health and restrain the prevalence of dental diseases among children with spastic cerebral palsy.","PeriodicalId":509861,"journal":{"name":"Pediatric dentistry and dental prophylaxis","volume":"24 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140663681","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}
F. A. Khafizova, E. R. Sharifullina, D. M. Khaliullin, E. R. Akhmetzyanova, K. R. Gabdrafikova
{"title":"The role of developmental factors in hypoplasia of deciduous teeth and treatment specifics in pediatric dental practice","authors":"F. A. Khafizova, E. R. Sharifullina, D. M. Khaliullin, E. R. Akhmetzyanova, K. R. Gabdrafikova","doi":"10.33925/1683-3031-2024-696","DOIUrl":"https://doi.org/10.33925/1683-3031-2024-696","url":null,"abstract":"Relevance. Congenital and systemic diseases can lead to developmental errors in the enamel organ, resulting in anomalies such as enamel hypoplasia. The high prevalence of these defects illustrates the vulnerability of teeth to changes in the intrauterine and postnatal environments. Enamel hypoplasia contributes to the development of caries and tooth wear by making enamel thinner, more retentive to dental plaque, and less resistant to acid degradation compared to normal enamel. Surfaces of the affected hard tissues are smooth and exhibit a symmetric distribution pattern. The occurrence of enamel hypoplasia in children is a significant factor in the development of caries; thus, they require comprehensive treatment and ongoing preventive care by a pediatric dentist.Purpose. To analyze the impact of factors contributing to the development of deciduous teeth hypoplasia in children, on the frequency of this condition and the specifics of its treatment by a pediatric dentist.Materials and Methods. The study involved the examination and treatment of children aged 4-12 at the Dental and Implantology Department of Kazan (Volga Region) Federal University over a 12-month period. Out of 972 children, 67 were diagnosed with systemic enamel hypoplasia. A questionnaire was developed for statistical research, and data were processed using Statistica 7.0 software Statistica 7.0 (StatSoft, США).Results. The survey revealed chronic diseases in 16.42% of mothers. During pregnancy, 68.6% of the mothers visited a dentist once, and 31.3% visited two to three times. Most mothers experienced early pregnancy toxemia—67% in the first half and 58.2% in the second half of the pregnancy. Additionally, 50.7% suffered from acute respiratory viral infections and influenza, and 25.4% had gastrointestinal diseases. Feeding practices involved breastfeeding in 68.7% of cases and artificial feeding in 31.3% (up to 3 months – 16.4%, up to 1 year – 64.1%, up to 2 years – 19.4%). Examination of the oral cavity in 67 children with systemic hypoplasia revealed a spotted form in 79.1% of cases and a purely destructive form in 20.9% of cases. Contemporary conservative dentistry emphasizes minimally invasive approaches to the treatment of such dental defects.Conclusion. The study of deciduous tooth hypoplasia in children highlighted the importance of the health status of the expectant mother and timely sanitation of the oral cavity. Particular attention should be paid to maternal infectious diseases, specifically influenza and ARVI. The findings underscore the need for preventive measures against temporary tooth hypoplasia from the onset of pregnancy planning to enhance the dental well-being of children.","PeriodicalId":509861,"journal":{"name":"Pediatric dentistry and dental prophylaxis","volume":"43 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140662542","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}
M. A. Shevchenko, L. Kiselnikova, A. D. Isaev, K. I. Fedotov
{"title":"Effective prevention of secondary caries in children’s permanent teeth using oral hygiene products","authors":"M. A. Shevchenko, L. Kiselnikova, A. D. Isaev, K. I. Fedotov","doi":"10.33925/1683-3031-2024-723","DOIUrl":"https://doi.org/10.33925/1683-3031-2024-723","url":null,"abstract":"Relevance. In Russia, caries prevalence rate in permanent teeth of 12-year-olds is 75, 6%, and in 15-year-olds, it is 87, 5%. Alongside with high prevalence of caries in permanent children’s teeth, the problem of secondary caries is very significant as well. Toothpastes containing fluoride use for caries prevention. Now, there are known toothpastes containing hydroxyapatite enriched with complex (PGC) with amino acid threonine. It is advisable to study this paste effect on secondary caries occurrence.Materials and methods. Clinical and laboratory examinations and treatment of 92 children, aged 7 to 15, aged (97 teeth) were carried out during one year. They were given dental treatment, including that of dentine caries, in permanent teeth (K02.1). Fillings marginal integrity was assessed using G. Ryge (1998) criterion and electrometry method. Carious process intensity in study groups was determined using indices DMFS and ICDAS-II (code I, code II).Results. In group using toothpaste containing hydroxyapatite enriched with complex (PGC) with amino acid threonine, frequency of unsatisfactory restorations was detected only in 6% of cases; in group using fluoride containing pastes – 12%. Electrical conductivity of hard tissues in these groups increased only by 9,6% and 36% respectively. Frequency of restorations with secondary caries signs at the end of the study was 27% in group with no preventive measures, and according to electrometric method, electrical conductivity at the border of fillings with hard dental tissues increased by 130%. Reduction of caries growth in group using toothpaste containing hydroxyapatite was 78,6%, in group with fluoride containing toothpaste – 64,3%.Conclusion. Application of a toothpaste containing hydroxyapatite enriched with Polyol Germanium Complex with amino acid threonine increases efficiency of secondary caries prevention in children's permanent teeth.","PeriodicalId":509861,"journal":{"name":"Pediatric dentistry and dental prophylaxis","volume":"6 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140673567","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}
V. A. Sheifer, O. Z. Topol’nitskiy, D. A. Lezhnev, V. Petrovskaya, N. I. Imshenetskaya, A. O. Kazaryan, R. Fedotov, O. T. Zangieva
{"title":"Analysis of remodeling and degenerative changes in the condylar process on the contralateral side in children with unilateral ankylosis post-mandibular ramus distraction","authors":"V. A. Sheifer, O. Z. Topol’nitskiy, D. A. Lezhnev, V. Petrovskaya, N. I. Imshenetskaya, A. O. Kazaryan, R. Fedotov, O. T. Zangieva","doi":"10.33925/1683-3031-2024-714","DOIUrl":"https://doi.org/10.33925/1683-3031-2024-714","url":null,"abstract":"Relevance. Patients with a history of unilateral ankylosis of the temporomandibular joint (TMJ) exhibit significant functional and anatomical abnormalities, leading to diminished quality of life and social adaptation. This condition necessitates a complex, multi-stage rehabilitation process. The contralateral, non-operated joint often bears the brunt of functional loads for an extended period post-surgery. Frequently, due to ankylosis-related interventions such as distraction osteogenesis and osteoplasty using various biomaterials, as well as orthognathic surgery, the bone structure of the contralateral joint is subjected to loads exceeding their biological capacity, resulting in no-table degenerative changes around the condylar process head.Materials and methods. An analysis was conducted on data from 55 patients who, within the age range of 7 to 18 years, had undergone multiple mandibular ramus distraction osteogenesis surgeries due to a history of unilateral ankylosis.Results. The application of the distraction apparatus led to rotational movements of the mandible within the coronal plane, thereby increasing compression around the TMJ on the contralateral side. Subsequent degenerative alterations in the area of the condylar head were observed in 61.8% of the patients.Conclusion. To mitigate the risk of degenerative changes in the contralateral condylar process head, it is advisable to utilize an orthopedic splint to separate the articular surfaces of the TMJ. This approach helps reduce pressure on the condylar process and prevents pathological remodeling.","PeriodicalId":509861,"journal":{"name":"Pediatric dentistry and dental prophylaxis","volume":"43 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140672904","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":"Electronic medical record system for school dental hygienists: a preventive focus","authors":"T. Burnashova, G. Skripkina","doi":"10.33925/1683-3031-2024-726","DOIUrl":"https://doi.org/10.33925/1683-3031-2024-726","url":null,"abstract":"","PeriodicalId":509861,"journal":{"name":"Pediatric dentistry and dental prophylaxis","volume":" 45","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140685542","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}
I. S. Agafonova, S. Ermolyev, R. A. Aivazova, Sh. L. Shimanskiy, V. Atrushkevich
{"title":"Pathogenetic strategies for addressing periodontal morphological and functional disorders in plaque-induced gingivitis","authors":"I. S. Agafonova, S. Ermolyev, R. A. Aivazova, Sh. L. Shimanskiy, V. Atrushkevich","doi":"10.33925/1683-3031-2024-744","DOIUrl":"https://doi.org/10.33925/1683-3031-2024-744","url":null,"abstract":"","PeriodicalId":509861,"journal":{"name":"Pediatric dentistry and dental prophylaxis","volume":" 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140687172","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}