{"id":"https://openalex.org/W3011960682","doi":"https://doi.org/10.1055/s-0040-1702254","title":"A Comparative Three-Dimensional Finite Element Study of Two Space Regainers in the Mixed Dentition Stage","display_name":"A Comparative Three-Dimensional Finite Element Study of Two Space Regainers in the Mixed Dentition Stage","publication_year":2020,"publication_date":"2020-02-01","ids":{"openalex":"https://openalex.org/W3011960682","doi":"https://doi.org/10.1055/s-0040-1702254","mag":"3011960682","pmid":"https://pubmed.ncbi.nlm.nih.gov/32168538","pmcid":"https://www.ncbi.nlm.nih.gov/pmc/articles/7069744"},"language":"en","primary_location":{"id":"doi:10.1055/s-0040-1702254","doi":"https://doi.org/10.1055/s-0040-1702254","is_oa":true,"landing_page_url":"https://doi.org/10.1055/s-0040-1702254","pdf_url":"https://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0040-1702254.pdf","source":{"id":"https://openalex.org/S2754735317","display_name":"European Journal of Dentistry","issn_l":"1305-7456","issn":["1305-7456","1305-7464"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-d","jufo-1","ki-jl-1","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310321135","host_organization_name":"Georg Thieme Verlag","host_organization_lineage":["https://openalex.org/P4310321135","https://openalex.org/P4310320000"],"host_organization_lineage_names":["Georg Thieme Verlag","Thieme Medical Publishers (Germany)"],"type":"journal"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"European Journal of Dentistry","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","pubmed"],"open_access":{"is_oa":true,"oa_status":"hybrid","oa_url":"https://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0040-1702254.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5082354725","display_name":"Mohamed Ahmed Abdel Hakim","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210160667","display_name":"Ministry of Health and Population","ror":"https://ror.org/04f90ax67","country_code":"EG","type":"government","lineage":["https://openalex.org/I4210160667"]}],"countries":["EG"],"is_corresponding":false,"raw_author_name":"Mohamed Ahmed Abdel Hakim","raw_affiliation_strings":["Ministry of Health and Population, El Minia, Egypt"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Ministry of Health and Population, El Minia, Egypt","institution_ids":["https://openalex.org/I4210160667"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5082612485","display_name":"Nagwa Mohammed Ali Khattab","orcid":"https://orcid.org/0000-0001-6327-7910","observed_orcids":["https://orcid.org/0000-0001-6327-7910"]},"institutions":[{"id":"https://openalex.org/I89466785","display_name":"Minia University","ror":"https://ror.org/02hcv4z63","country_code":"EG","type":"education","lineage":["https://openalex.org/I89466785"]}],"countries":["EG"],"is_corresponding":true,"raw_author_name":"Nagwa Mohamed Ali Khatab","raw_affiliation_strings":["Department of Paediatric and Community Dentistry, Faculty of Dentistry, Minia University, Minya, El Minia, Egypt"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Paediatric and Community Dentistry, Faculty of Dentistry, Minia University, Minya, El Minia, Egypt","institution_ids":["https://openalex.org/I89466785"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101912833","display_name":"Kareem M Mohamed","orcid":"https://orcid.org/0000-0002-3895-7719","observed_orcids":["https://orcid.org/0000-0002-3895-7719"]},"institutions":[{"id":"https://openalex.org/I89466785","display_name":"Minia University","ror":"https://ror.org/02hcv4z63","country_code":"EG","type":"education","lineage":["https://openalex.org/I89466785"]}],"countries":["EG"],"is_corresponding":false,"raw_author_name":"Kareem Maher Gaber Mohamed","raw_affiliation_strings":["Department of Orthodontic, Faculty of Dentistry, Minia University, Minya, El Minia, Egypt"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthodontic, Faculty of Dentistry, Minia University, Minya, El Minia, Egypt","institution_ids":["https://openalex.org/I89466785"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5021307898","display_name":"Ahmad Abdel Hamid Elheeny","orcid":"https://orcid.org/0000-0001-7796-0198","observed_orcids":["https://orcid.org/0000-0001-7796-0198"]},"institutions":[{"id":"https://openalex.org/I89466785","display_name":"Minia University","ror":"https://ror.org/02hcv4z63","country_code":"EG","type":"education","lineage":["https://openalex.org/I89466785"]}],"countries":["EG"],"is_corresponding":false,"raw_author_name":"Ahmad Abdel Hamid Elheeny","raw_affiliation_strings":["Department of Paediatric and Community Dentistry, Faculty of Dentistry, Minia University, Minya, El Minia, Egypt"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Paediatric and Community Dentistry, Faculty of Dentistry, Minia University, Minya, El Minia, Egypt","institution_ids":["https://openalex.org/I89466785"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5082612485"],"corresponding_institution_ids":["https://openalex.org/I89466785"],"apc_list":null,"apc_paid":null,"fwci":1.6126,"has_fulltext":true,"cited_by_count":11,"citation_normalized_percentile":{"value":0.79836097,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":96},"biblio":{"volume":"14","issue":"01","first_page":"107","last_page":"114"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10356","display_name":"Orthodontics and Dentofacial Orthopedics","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/3505","display_name":"Orthodontics"},"field":{"id":"https://openalex.org/fields/35","display_name":"Dentistry"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10356","display_name":"Orthodontics and Dentofacial Orthopedics","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/3505","display_name":"Orthodontics"},"field":{"id":"https://openalex.org/fields/35","display_name":"Dentistry"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10113","display_name":"Dental materials and restorations","score":9.999999747378752e-05,"subfield":{"id":"https://openalex.org/subfields/3500","display_name":"General Dentistry"},"field":{"id":"https://openalex.org/fields/35","display_name":"Dentistry"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11919","display_name":"dental development and anomalies","score":9.999999747378752e-05,"subfield":{"id":"https://openalex.org/subfields/3500","display_name":"General Dentistry"},"field":{"id":"https://openalex.org/fields/35","display_name":"Dentistry"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/mixed-dentition","display_name":"mixed dentition","score":0.8090000152587891},{"id":"https://openalex.org/keywords/periodontal-ligament-stress","display_name":"periodontal ligament stress","score":0.8379999995231628},{"id":"https://openalex.org/keywords/mandibular-first-molar","display_name":"mandibular first molar","score":0.8569999933242798},{"id":"https://openalex.org/keywords/deciduous-canine","display_name":"deciduous canine","score":0.9729999899864197},{"id":"https://openalex.org/keywords/crown-displacement","display_name":"crown displacement","score":0.5189999938011169},{"id":"https://openalex.org/keywords/anchorage","display_name":"anchorage","score":0.6539999842643738},{"id":"https://openalex.org/keywords/three-dimensional-finite-element-model","display_name":"three-dimensional finite element model","score":0.6700000166893005}],"concepts":[{"id":"https://openalex.org/C202271784","wikidata":"https://www.wikidata.org/wiki/Q189218","display_name":"Molar","level":2,"score":0.7793042659759521},{"id":"https://openalex.org/C2778400979","wikidata":"https://www.wikidata.org/wiki/Q143720","display_name":"Crown (dentistry)","level":2,"score":0.7649085521697998},{"id":"https://openalex.org/C178910020","wikidata":"https://www.wikidata.org/wiki/Q2211994","display_name":"Sagittal plane","level":2,"score":0.6598731875419617},{"id":"https://openalex.org/C155165730","wikidata":"https://www.wikidata.org/wiki/Q1319519","display_name":"von Mises yield criterion","level":3,"score":0.6051283478736877},{"id":"https://openalex.org/C29694066","wikidata":"https://www.wikidata.org/wiki/Q118301","display_name":"Orthodontics","level":1,"score":0.5993767976760864},{"id":"https://openalex.org/C41868710","wikidata":"https://www.wikidata.org/wiki/Q540092","display_name":"Periodontal fiber","level":2,"score":0.597343921661377},{"id":"https://openalex.org/C107551265","wikidata":"https://www.wikidata.org/wiki/Q1458245","display_name":"Displacement (psychology)","level":2,"score":0.5641502737998962},{"id":"https://openalex.org/C21036866","wikidata":"https://www.wikidata.org/wiki/Q181767","display_name":"Stress (linguistics)","level":2,"score":0.5148640871047974},{"id":"https://openalex.org/C199343813","wikidata":"https://www.wikidata.org/wiki/Q12128","display_name":"Dentistry","level":1,"score":0.4828213155269623},{"id":"https://openalex.org/C62836269","wikidata":"https://www.wikidata.org/wiki/Q11136426","display_name":"Mandibular first molar","level":3,"score":0.48205432295799255},{"id":"https://openalex.org/C135628077","wikidata":"https://www.wikidata.org/wiki/Q220184","display_name":"Finite element method","level":2,"score":0.4753153920173645},{"id":"https://openalex.org/C33283694","wikidata":"https://www.wikidata.org/wiki/Q1131316","display_name":"Deciduous","level":2,"score":0.440766841173172},{"id":"https://openalex.org/C73753567","wikidata":"https://www.wikidata.org/wiki/Q4348754","display_name":"Mandibular second molar","level":3,"score":0.4260554909706116},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.3227396309375763},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3200984001159668},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.2565821707248688},{"id":"https://openalex.org/C66938386","wikidata":"https://www.wikidata.org/wiki/Q633538","display_name":"Structural engineering","level":1,"score":0.16273340582847595},{"id":"https://openalex.org/C105702510","wikidata":"https://www.wikidata.org/wiki/Q514","display_name":"Anatomy","level":1,"score":0.10432171821594238},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.09143233299255371},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C542102704","wikidata":"https://www.wikidata.org/wiki/Q183257","display_name":"Psychotherapist","level":1,"score":0.0},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1055/s-0040-1702254","doi":"https://doi.org/10.1055/s-0040-1702254","is_oa":true,"landing_page_url":"https://doi.org/10.1055/s-0040-1702254","pdf_url":"https://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0040-1702254.pdf","source":{"id":"https://openalex.org/S2754735317","display_name":"European Journal of Dentistry","issn_l":"1305-7456","issn":["1305-7456","1305-7464"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-d","jufo-1","ki-jl-1","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310321135","host_organization_name":"Georg Thieme Verlag","host_organization_lineage":["https://openalex.org/P4310321135","https://openalex.org/P4310320000"],"host_organization_lineage_names":["Georg Thieme Verlag","Thieme Medical Publishers (Germany)"],"type":"journal"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"European Journal of Dentistry","raw_type":"journal-article"},{"id":"pmid:32168538","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/32168538","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"European journal of dentistry","raw_type":"Journal Article"},{"id":"pmh:oai:pubmedcentral.nih.gov:7069744","doi":null,"is_oa":true,"landing_page_url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC7069744/","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Eur J Dent","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.1055/s-0040-1702254","doi":"https://doi.org/10.1055/s-0040-1702254","is_oa":true,"landing_page_url":"https://doi.org/10.1055/s-0040-1702254","pdf_url":"https://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0040-1702254.pdf","source":{"id":"https://openalex.org/S2754735317","display_name":"European Journal of Dentistry","issn_l":"1305-7456","issn":["1305-7456","1305-7464"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-d","jufo-1","ki-jl-1","norway-1","poland-100","russia-white-list-1"],"host_organization":"https://openalex.org/P4310321135","host_organization_name":"Georg Thieme Verlag","host_organization_lineage":["https://openalex.org/P4310321135","https://openalex.org/P4310320000"],"host_organization_lineage_names":["Georg Thieme Verlag","Thieme Medical Publishers (Germany)"],"type":"journal"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"European Journal of Dentistry","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/3","score":0.6240000128746033,"display_name":"Good health and well-being"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W3011960682.pdf","grobid_xml":"https://content.openalex.org/works/W3011960682.grobid-xml"},"referenced_works_count":35,"referenced_works":["https://openalex.org/W85323850","https://openalex.org/W1539403565","https://openalex.org/W1577119215","https://openalex.org/W1989045151","https://openalex.org/W1995105757","https://openalex.org/W2004379627","https://openalex.org/W2011060788","https://openalex.org/W2016389396","https://openalex.org/W2044250531","https://openalex.org/W2072666736","https://openalex.org/W2124830443","https://openalex.org/W2126475195","https://openalex.org/W2130490534","https://openalex.org/W2137901926","https://openalex.org/W2142937452","https://openalex.org/W2145798267","https://openalex.org/W2148096755","https://openalex.org/W2172053082","https://openalex.org/W2174036349","https://openalex.org/W2180764432","https://openalex.org/W2215688369","https://openalex.org/W2308124184","https://openalex.org/W2395359315","https://openalex.org/W2413967251","https://openalex.org/W2430188762","https://openalex.org/W2465521726","https://openalex.org/W2489244024","https://openalex.org/W2523429643","https://openalex.org/W2608453876","https://openalex.org/W2744213955","https://openalex.org/W2765072471","https://openalex.org/W2901030482","https://openalex.org/W2917813951","https://openalex.org/W2987912532","https://openalex.org/W4293872461"],"related_works":["https://openalex.org/W7172266190","https://openalex.org/W2369150245","https://openalex.org/W4403542997","https://openalex.org/W4386434525","https://openalex.org/W4365444143","https://openalex.org/W4322618361","https://openalex.org/W7168102732","https://openalex.org/W2347878181","https://openalex.org/W2376060600","https://openalex.org/W4389622417"],"abstract_inverted_index":{"OBJECTIVES:":[0],"This":[1],"study":[2],"aims":[3],"to":[4,198],"compare":[5],"the":[6,14,36,47,63,73,106,110,120,141,146,150,153,170,173,182,186,202,207,216],"stress":[7,61,167,189],"distribution":[8,85],"and":[9,21,53,58,65,79,86,143,165,204],"displacement":[10,87,101,116],"that":[11,103,127,179,215],"resulted":[12],"from":[13],"use":[15,217],"of":[16,35,72,145,152,172,206,218],"a":[17,41],"Gerber":[18,96,136,159,193,219],"space":[19,97,194],"regainer":[20,98,195],"sagittal":[22,107,130,183],"distalizer":[23,108],"using":[24,40],"three-dimensional":[25],"finite":[26],"element":[27],"analysis.":[28,94],"MATERIALS":[29],"AND":[30],"METHODS:":[31],"Three-dimensional":[32],"simulated":[33],"models":[34],"appliances":[37,49],"were":[38,50,82,89,138],"developed":[39],"software.":[42],"The":[43,132],"forces":[44],"applied":[45],"by":[46,105,129,135,181,192],"two":[48],"3N":[51],"(tipping)":[52],"15N":[54],"(bodily),":[55],"respectively.":[56],"Displacement":[57],"von":[59],"Mises":[60],"on":[62,169,201],"compact":[64],"cancellous":[66],"bone,":[67],"periodontal":[68],"ligament":[69],"(PDL),":[70],"crowns":[71],"mandibular":[74,174],"first,":[75],"second":[76],"permanent":[77,112,155,176],"molars,":[78],"deciduous":[80,147,208],"canines":[81],"calculated.":[83],"Stress":[84],"values":[88],"measured":[90],"via":[91],"linear":[92],"static":[93],"RESULTS:":[95],"showed":[99],"greater":[100],"than":[102,149,178],"produced":[104,191],"at":[109,119],"first":[111,154,175],"molar.":[113],"However,":[114],"such":[115],"was":[117],"less":[118,166],"other":[121,187],"tested":[122],"points":[123],"when":[124],"compared":[125],"with":[126],"delivered":[128],"distalizer.":[131,184],"stresses":[133],"created":[134,180],"appliance":[137,160,220],"higher":[139],"in":[140],"crown":[142,151,171,203],"PDL":[144,205],"canine":[148],"molar":[156,177],"crown.":[157],"CONCLUSIONS:":[158],"generates":[161],"more":[162,200,222],"distal":[163],"force":[164],"concentration":[168],"On":[185],"hand,":[188],"concentrations":[190],"are":[196],"found":[197],"be":[199,213],"canine.":[209],"Therefore,":[210],"it":[211],"can":[212],"concluded":[214],"needs":[221],"anchorage.":[223]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":1},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":1}],"updated_date":"2026-11-10T11:39:43.021295","created_date":"2020-03-23T00:00:00"}