{"id":"https://openalex.org/W2392513340","doi":null,"title":"Impact of First Premolar Extractions in Orthodontic Treatment Upon Third Molar Eruptions Angle","display_name":"Impact of First Premolar Extractions in Orthodontic Treatment Upon Third Molar Eruptions Angle","publication_year":2007,"publication_date":"2007-01-01","ids":{"openalex":"https://openalex.org/W2392513340","mag":"2392513340"},"language":"en","primary_location":{"id":"mag:2392513340","doi":null,"is_oa":false,"landing_page_url":"https://en.cnki.com.cn/Article_en/CJFDTOTAL-KQYZ200703023.htm","pdf_url":null,"source":{"id":"https://openalex.org/S2764764037","display_name":"Journal of Oral Science Research","issn_l":"1671-7651","issn":["1671-7651"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4360969200","host_organization_name":"Wuhan University Stomatological Hospital","host_organization_lineage":["https://openalex.org/P4360969200"],"host_organization_lineage_names":["Wuhan University Stomatological Hospital"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Journal of Oral Science Research","raw_type":null},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5086449287","display_name":"Zhang Long-hu","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Zhang Long-hu","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":null,"display_name":"Enchen Zhou","orcid":"https://orcid.org/0000-0002-3739-4934","observed_orcids":["https://orcid.org/0000-0002-3739-4934"]},"institutions":[{"id":"https://openalex.org/I4210103309","display_name":"Ezhou Central Hospital","ror":"https://ror.org/00vx54857","country_code":"CN","type":"healthcare","lineage":["https://openalex.org/I4210103309"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Enchen Zhou","raw_affiliation_strings":["Centre Hospital,Ezhou 436000"],"raw_orcid":"https://orcid.org/0000-0002-3739-4934","affiliations":[{"raw_affiliation_string":"Centre Hospital,Ezhou 436000","institution_ids":["https://openalex.org/I4210103309"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.42724906,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10356","display_name":"Orthodontics and Dentofacial Orthopedics","score":0.9990000128746033,"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":0.9990000128746033,"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/T11363","display_name":"Dental Radiography and Imaging","score":0.0006000000284984708,"subfield":{"id":"https://openalex.org/subfields/3504","display_name":"Oral Surgery"},"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":0.0,"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/first-premolar-extraction","display_name":"first premolar extraction","score":0.9480000138282776},{"id":"https://openalex.org/keywords/third-molar-eruption","display_name":"third molar eruption","score":0.921999990940094},{"id":"https://openalex.org/keywords/third-molar-angulation","display_name":"third molar angulation","score":0.8709999918937683},{"id":"https://openalex.org/keywords/second-molar","display_name":"second molar","score":0.7409999966621399},{"id":"https://openalex.org/keywords/mandibular-third-molar","display_name":"mandibular third molar","score":0.7680000066757202},{"id":"https://openalex.org/keywords/impacted-third-molar","display_name":"impacted third molar","score":0.8809999823570251},{"id":"https://openalex.org/keywords/orthodontic-treatment","display_name":"orthodontic treatment","score":0.8740000128746033},{"id":"https://openalex.org/keywords/panoramic-radiography","display_name":"panoramic radiography","score":0.5950000286102295},{"id":"https://openalex.org/keywords/occlusal-plane","display_name":"occlusal plane","score":0.7379999756813049}],"concepts":[{"id":"https://openalex.org/C202271784","wikidata":"https://www.wikidata.org/wiki/Q189218","display_name":"Molar","level":2,"score":0.9334268569946289},{"id":"https://openalex.org/C2780641865","wikidata":"https://www.wikidata.org/wiki/Q839483","display_name":"Premolar","level":3,"score":0.9233425855636597},{"id":"https://openalex.org/C199343813","wikidata":"https://www.wikidata.org/wiki/Q12128","display_name":"Dentistry","level":1,"score":0.6387650966644287},{"id":"https://openalex.org/C29694066","wikidata":"https://www.wikidata.org/wiki/Q118301","display_name":"Orthodontics","level":1,"score":0.6320317983627319},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.5483596324920654},{"id":"https://openalex.org/C73753567","wikidata":"https://www.wikidata.org/wiki/Q4348754","display_name":"Mandibular second molar","level":3,"score":0.4875878691673279},{"id":"https://openalex.org/C62836269","wikidata":"https://www.wikidata.org/wiki/Q11136426","display_name":"Mandibular first molar","level":3,"score":0.4433678984642029}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:2392513340","doi":null,"is_oa":false,"landing_page_url":"https://en.cnki.com.cn/Article_en/CJFDTOTAL-KQYZ200703023.htm","pdf_url":null,"source":{"id":"https://openalex.org/S2764764037","display_name":"Journal of Oral Science Research","issn_l":"1671-7651","issn":["1671-7651"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4360969200","host_organization_name":"Wuhan University Stomatological Hospital","host_organization_lineage":["https://openalex.org/P4360969200"],"host_organization_lineage_names":["Wuhan University Stomatological Hospital"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Journal of Oral Science Research","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/3","display_name":"Good health and well-being","score":0.8048999905586243}],"study_designs":[{"id":"https://openalex.org/study-designs/observational-study","display_name":"Observational Study"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W1862450294","https://openalex.org/W2347554643","https://openalex.org/W2373705560","https://openalex.org/W2991786871","https://openalex.org/W2343504944","https://openalex.org/W2166086291","https://openalex.org/W2042517264","https://openalex.org/W3013267391","https://openalex.org/W2599884875","https://openalex.org/W2126727100"],"abstract_inverted_index":{"Objective:The":[0],"purpose":[1],"of":[2,13,34,60,73,81],"this":[3],"study":[4],"was":[5],"to":[6,21,91,113],"determine":[7],"the":[8,11,57,61,65,70,74,78,82,114,118,123],"relationship":[9],"between":[10,56,69],"inclinations":[12],"second":[14,83],"and":[15,30,40,47,64,68,77],"third":[16,62,75,86,105,126],"molars":[17,106],"during":[18],"a":[19],"2":[20],"2.5":[22],"year":[23],"period":[24],"in":[25,85,110,117],"patients":[26,39,43],"treated":[27],"orthodontically":[28],"with":[29],"without":[31],"premolar":[32,37,120,124],"extractions.Methods:Records":[33],"37":[35],"first":[36,119],"extraction":[38,121],"33":[41],"nonextraction":[42],"were":[44,51,54,96],"examined.The":[45],"pretreatment":[46,90],"posttreatment":[48,92],"panoramic":[49],"radiographs":[50],"analyzed.The":[52],"angles":[53],"measured":[55],"long":[58,71,79],"axis":[59,72,80],"molar":[63,76,87,127],"occlusal":[66,115],"plane":[67,116],"molar.Changes":[84],"angulations":[88],"from":[89],"for":[93],"two":[94],"groups":[95],"compared":[97],"by":[98],"Mann-Whitney":[99],"U-test.Results:Statistical":[100],"analysis":[101],"revealed":[102],"that":[103],"mandibular":[104],"showed":[107],"an":[108],"improvement":[109],"angulation":[111],"relative":[112],"group.Conclusion:With":[122],"extractions,the":[125],"eruption":[128],"will":[129],"be":[130],"more":[131],"vertical":[132],"angle,which":[133],"may":[134],"reduce":[135],"its":[136],"impacted":[137],"possibilities.":[138]},"counts_by_year":[],"updated_date":"2026-09-29T14:09:16.559479","created_date":"2016-06-24T00:00:00"}