The effect of first and second premolar extractions on third molars: A retrospective longitudinal study
Abstract Objectives To analyse the effect of first and second premolar extractions on eruption space for upper and lower third molars and on third molar position and angulation during orthodontic treatment. Methods The sample consisted of 296 patients of which 218 patients were orthodontically treat...
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| creator | Miclotte, A Grommen, B Cadenas de Llano-Pérula, M Verdonck, A Jacobs, R Willems, G |
| description | Abstract Objectives To analyse the effect of first and second premolar extractions on eruption space for upper and lower third molars and on third molar position and angulation during orthodontic treatment. Methods The sample consisted of 296 patients of which 218 patients were orthodontically treated without extraction and 78 patients with extraction of first or second premolars. The eruption space for third molars was measured on pre– and posttreatment lateral cephalograms, whereas the angulation, vertical position, the relation with the mandibular canal and the mineralization status of third molars were evaluated using pre– and posttreatment panoramic radiographs. All data were statistically analyzed. Results The increase in eruption space and the change in vertical position of upper and lower third molars significantly differed between patients treated with and without premolar extractions, whereas the change in angulation, relationship with the mandibular canal and mineralization status of the third molars did not significantly differ between patients treated with and without premolar extractions. Conclusions The retromolar space and the position of third molars significantly change during orthodontic treatment in growing patients. Premolar extractions have a positive influence on the eruption space and vertical position of third molars, whereas they do not influence the angular changes of third molars. Due to the retrospective character of the study, these conclusions should be carefully considered. Further prospective research is necessary for better insights into this complex topic. Clinical significance This study stresses the importance of considering the possible effects of orthodontic treatment on third molars during treatment planning. |
| doi_str_mv | 10.1016/j.jdent.2017.03.007 |
| format | Article |
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Methods The sample consisted of 296 patients of which 218 patients were orthodontically treated without extraction and 78 patients with extraction of first or second premolars. The eruption space for third molars was measured on pre– and posttreatment lateral cephalograms, whereas the angulation, vertical position, the relation with the mandibular canal and the mineralization status of third molars were evaluated using pre– and posttreatment panoramic radiographs. All data were statistically analyzed. Results The increase in eruption space and the change in vertical position of upper and lower third molars significantly differed between patients treated with and without premolar extractions, whereas the change in angulation, relationship with the mandibular canal and mineralization status of the third molars did not significantly differ between patients treated with and without premolar extractions. Conclusions The retromolar space and the position of third molars significantly change during orthodontic treatment in growing patients. Premolar extractions have a positive influence on the eruption space and vertical position of third molars, whereas they do not influence the angular changes of third molars. Due to the retrospective character of the study, these conclusions should be carefully considered. Further prospective research is necessary for better insights into this complex topic. Clinical significance This study stresses the importance of considering the possible effects of orthodontic treatment on third molars during treatment planning.</description><identifier>ISSN: 0300-5712</identifier><identifier>ISSN: 1879-176X</identifier><identifier>EISSN: 1879-176X</identifier><identifier>DOI: 10.1016/j.jdent.2017.03.007</identifier><identifier>PMID: 28359700</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Adolescent ; Angular position ; Bicuspid - surgery ; Cephalometry - methods ; Child ; Correlation analysis ; Data processing ; Dental Arch - pathology ; Dentistry ; Extraction ; Female ; Humans ; Longitudinal Studies ; Male ; Malocclusion - classification ; Mandible - diagnostic imaging ; Mandible - pathology ; Mandibular canal ; Maxilla - diagnostic imaging ; Maxilla - pathology ; Medicin och hälsovetenskap ; Mineralization ; Molar, Third - anatomy & histology ; Molar, Third - diagnostic imaging ; Molar, Third - growth & development ; Molar, Third - physiopathology ; Molars ; Orthodontics ; Orthodontics, Corrective - methods ; Patients ; Premolar extraction ; Premolars ; Radiographs ; Radiography ; Radiography, Panoramic ; Retromolar space ; Retrospective Studies ; Sampling methods ; Serial Extraction ; Studies ; Teeth ; Third molars ; Tooth Calcification ; Tooth Eruption - physiology ; Tooth Movement Techniques ; Tooth, Impacted - prevention & control ; Vertical orientation ; Young Adult</subject><ispartof>Journal of dentistry, 2017-06, Vol.61, p.55-66</ispartof><rights>The Author(s)</rights><rights>2017 The Author(s)</rights><rights>Copyright © 2017 The Author(s). Published by Elsevier Ltd.. All rights reserved.</rights><rights>Copyright Elsevier Limited Jun 1, 2017</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c603t-d62e1b8977b675e0c3c58cf7c8505e9a98b2fc82e21175d6181161c44313692d3</citedby><cites>FETCH-LOGICAL-c603t-d62e1b8977b675e0c3c58cf7c8505e9a98b2fc82e21175d6181161c44313692d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jdent.2017.03.007$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>230,314,552,780,784,885,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/28359700$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttp://kipublications.ki.se/Default.aspx?queryparsed=id:135939021$$DView record from Swedish Publication Index$$Hfree_for_read</backlink></links><search><creatorcontrib>Miclotte, A</creatorcontrib><creatorcontrib>Grommen, B</creatorcontrib><creatorcontrib>Cadenas de Llano-Pérula, M</creatorcontrib><creatorcontrib>Verdonck, A</creatorcontrib><creatorcontrib>Jacobs, R</creatorcontrib><creatorcontrib>Willems, G</creatorcontrib><title>The effect of first and second premolar extractions on third molars: A retrospective longitudinal study</title><title>Journal of dentistry</title><addtitle>J Dent</addtitle><description>Abstract Objectives To analyse the effect of first and second premolar extractions on eruption space for upper and lower third molars and on third molar position and angulation during orthodontic treatment. Methods The sample consisted of 296 patients of which 218 patients were orthodontically treated without extraction and 78 patients with extraction of first or second premolars. The eruption space for third molars was measured on pre– and posttreatment lateral cephalograms, whereas the angulation, vertical position, the relation with the mandibular canal and the mineralization status of third molars were evaluated using pre– and posttreatment panoramic radiographs. All data were statistically analyzed. Results The increase in eruption space and the change in vertical position of upper and lower third molars significantly differed between patients treated with and without premolar extractions, whereas the change in angulation, relationship with the mandibular canal and mineralization status of the third molars did not significantly differ between patients treated with and without premolar extractions. Conclusions The retromolar space and the position of third molars significantly change during orthodontic treatment in growing patients. Premolar extractions have a positive influence on the eruption space and vertical position of third molars, whereas they do not influence the angular changes of third molars. Due to the retrospective character of the study, these conclusions should be carefully considered. Further prospective research is necessary for better insights into this complex topic. Clinical significance This study stresses the importance of considering the possible effects of orthodontic treatment on third molars during treatment planning.</description><subject>Adolescent</subject><subject>Angular position</subject><subject>Bicuspid - surgery</subject><subject>Cephalometry - methods</subject><subject>Child</subject><subject>Correlation analysis</subject><subject>Data processing</subject><subject>Dental Arch - pathology</subject><subject>Dentistry</subject><subject>Extraction</subject><subject>Female</subject><subject>Humans</subject><subject>Longitudinal Studies</subject><subject>Male</subject><subject>Malocclusion - classification</subject><subject>Mandible - diagnostic imaging</subject><subject>Mandible - pathology</subject><subject>Mandibular canal</subject><subject>Maxilla - diagnostic imaging</subject><subject>Maxilla - pathology</subject><subject>Medicin och hälsovetenskap</subject><subject>Mineralization</subject><subject>Molar, Third - anatomy & histology</subject><subject>Molar, Third - diagnostic imaging</subject><subject>Molar, Third - growth & development</subject><subject>Molar, Third - physiopathology</subject><subject>Molars</subject><subject>Orthodontics</subject><subject>Orthodontics, Corrective - methods</subject><subject>Patients</subject><subject>Premolar extraction</subject><subject>Premolars</subject><subject>Radiographs</subject><subject>Radiography</subject><subject>Radiography, Panoramic</subject><subject>Retromolar space</subject><subject>Retrospective Studies</subject><subject>Sampling methods</subject><subject>Serial Extraction</subject><subject>Studies</subject><subject>Teeth</subject><subject>Third molars</subject><subject>Tooth Calcification</subject><subject>Tooth Eruption - physiology</subject><subject>Tooth Movement Techniques</subject><subject>Tooth, Impacted - prevention & control</subject><subject>Vertical orientation</subject><subject>Young Adult</subject><issn>0300-5712</issn><issn>1879-176X</issn><issn>1879-176X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>D8T</sourceid><recordid>eNqFkk1r3DAQhk1paTZpf0GhCHrpxduRZFtSoYEQ-gWBHppCbsIrjRNtvNZWstPuv89sdpNAoPQ0g_S8M9K8UxRvOMw58ObDcr70OIxzAVzNQc4B1LNixrUyJVfNxfNiBhKgrBUXB8VhzksAqECYl8WB0LI2CmBWXJ5fIcOuQzey2LEupDyydvAso4sU1glXsW8Tw79jat0Y4pBZHNh4FZJnd1f5IzthCccU85rKhBtkfRwuwzj5MLQ9y5RsXhUvurbP-Hofj4pfXz6fn34rz358_X56cla6BuRY-kYgX2ij1KJRNYKTrtauU07XUKNpjV6IzmmBgnNV-4Zrzhvuqkpy2Rjh5VFR7urmP7ieFnadwqpNGxvbYPdH15ShrYwyjSbe_JNfp-gfRfdCTqOTBgQn7fudlsDfE-bRrkJ22PftgHHKlmstOXWpDKHvnqDLOCWaDlEGqKSqoSJK7ihHs8wJu4fncLBbz-3S3nlut55bkJY8J9Xbfe1psUL_oLk3mYBPOwBp8DcBk80u4ODQh0SGWR_DfxocP9G7PgzBtf01bjA__sRmYcH-3K7dduu4okRVF_IWK1vUHg</recordid><startdate>20170601</startdate><enddate>20170601</enddate><creator>Miclotte, A</creator><creator>Grommen, B</creator><creator>Cadenas de Llano-Pérula, M</creator><creator>Verdonck, A</creator><creator>Jacobs, R</creator><creator>Willems, G</creator><general>Elsevier Ltd</general><general>Elsevier Limited</general><scope>6I.</scope><scope>AAFTH</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QP</scope><scope>7QQ</scope><scope>7SE</scope><scope>7SR</scope><scope>7TA</scope><scope>7TB</scope><scope>8BQ</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>H8G</scope><scope>JG9</scope><scope>K9.</scope><scope>7X8</scope><scope>ADTPV</scope><scope>AOWAS</scope><scope>D8T</scope><scope>ZZAVC</scope></search><sort><creationdate>20170601</creationdate><title>The effect of first and second premolar extractions on third molars: A retrospective longitudinal study</title><author>Miclotte, A ; Grommen, B ; Cadenas de Llano-Pérula, M ; Verdonck, A ; Jacobs, R ; Willems, G</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c603t-d62e1b8977b675e0c3c58cf7c8505e9a98b2fc82e21175d6181161c44313692d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Adolescent</topic><topic>Angular position</topic><topic>Bicuspid - surgery</topic><topic>Cephalometry - methods</topic><topic>Child</topic><topic>Correlation analysis</topic><topic>Data processing</topic><topic>Dental Arch - pathology</topic><topic>Dentistry</topic><topic>Extraction</topic><topic>Female</topic><topic>Humans</topic><topic>Longitudinal Studies</topic><topic>Male</topic><topic>Malocclusion - classification</topic><topic>Mandible - diagnostic imaging</topic><topic>Mandible - pathology</topic><topic>Mandibular canal</topic><topic>Maxilla - diagnostic imaging</topic><topic>Maxilla - pathology</topic><topic>Medicin och hälsovetenskap</topic><topic>Mineralization</topic><topic>Molar, Third - anatomy & histology</topic><topic>Molar, Third - diagnostic imaging</topic><topic>Molar, Third - growth & development</topic><topic>Molar, Third - physiopathology</topic><topic>Molars</topic><topic>Orthodontics</topic><topic>Orthodontics, Corrective - methods</topic><topic>Patients</topic><topic>Premolar extraction</topic><topic>Premolars</topic><topic>Radiographs</topic><topic>Radiography</topic><topic>Radiography, Panoramic</topic><topic>Retromolar space</topic><topic>Retrospective Studies</topic><topic>Sampling methods</topic><topic>Serial Extraction</topic><topic>Studies</topic><topic>Teeth</topic><topic>Third molars</topic><topic>Tooth Calcification</topic><topic>Tooth Eruption - physiology</topic><topic>Tooth Movement Techniques</topic><topic>Tooth, Impacted - prevention & control</topic><topic>Vertical orientation</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Miclotte, A</creatorcontrib><creatorcontrib>Grommen, B</creatorcontrib><creatorcontrib>Cadenas de Llano-Pérula, M</creatorcontrib><creatorcontrib>Verdonck, A</creatorcontrib><creatorcontrib>Jacobs, R</creatorcontrib><creatorcontrib>Willems, G</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Materials Business File</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Copper Technical Reference Library</collection><collection>Materials Research Database</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>MEDLINE - Academic</collection><collection>SwePub</collection><collection>SwePub Articles</collection><collection>SWEPUB Freely available online</collection><collection>SwePub Articles full text</collection><jtitle>Journal of dentistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Miclotte, A</au><au>Grommen, B</au><au>Cadenas de Llano-Pérula, M</au><au>Verdonck, A</au><au>Jacobs, R</au><au>Willems, G</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The effect of first and second premolar extractions on third molars: A retrospective longitudinal study</atitle><jtitle>Journal of dentistry</jtitle><addtitle>J Dent</addtitle><date>2017-06-01</date><risdate>2017</risdate><volume>61</volume><spage>55</spage><epage>66</epage><pages>55-66</pages><issn>0300-5712</issn><issn>1879-176X</issn><eissn>1879-176X</eissn><abstract>Abstract Objectives To analyse the effect of first and second premolar extractions on eruption space for upper and lower third molars and on third molar position and angulation during orthodontic treatment. Methods The sample consisted of 296 patients of which 218 patients were orthodontically treated without extraction and 78 patients with extraction of first or second premolars. The eruption space for third molars was measured on pre– and posttreatment lateral cephalograms, whereas the angulation, vertical position, the relation with the mandibular canal and the mineralization status of third molars were evaluated using pre– and posttreatment panoramic radiographs. All data were statistically analyzed. Results The increase in eruption space and the change in vertical position of upper and lower third molars significantly differed between patients treated with and without premolar extractions, whereas the change in angulation, relationship with the mandibular canal and mineralization status of the third molars did not significantly differ between patients treated with and without premolar extractions. Conclusions The retromolar space and the position of third molars significantly change during orthodontic treatment in growing patients. Premolar extractions have a positive influence on the eruption space and vertical position of third molars, whereas they do not influence the angular changes of third molars. Due to the retrospective character of the study, these conclusions should be carefully considered. Further prospective research is necessary for better insights into this complex topic. Clinical significance This study stresses the importance of considering the possible effects of orthodontic treatment on third molars during treatment planning.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>28359700</pmid><doi>10.1016/j.jdent.2017.03.007</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Adolescent Angular position Bicuspid - surgery Cephalometry - methods Child Correlation analysis Data processing Dental Arch - pathology Dentistry Extraction Female Humans Longitudinal Studies Male Malocclusion - classification Mandible - diagnostic imaging Mandible - pathology Mandibular canal Maxilla - diagnostic imaging Maxilla - pathology Medicin och hälsovetenskap Mineralization Molar, Third - anatomy & histology Molar, Third - diagnostic imaging Molar, Third - growth & development Molar, Third - physiopathology Molars Orthodontics Orthodontics, Corrective - methods Patients Premolar extraction Premolars Radiographs Radiography Radiography, Panoramic Retromolar space Retrospective Studies Sampling methods Serial Extraction Studies Teeth Third molars Tooth Calcification Tooth Eruption - physiology Tooth Movement Techniques Tooth, Impacted - prevention & control Vertical orientation Young Adult |
| title | The effect of first and second premolar extractions on third molars: A retrospective longitudinal study |
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