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Article: A systematic review of post-extractional alveolar hard and soft tissue dimensional changes in humans

TitleA systematic review of post-extractional alveolar hard and soft tissue dimensional changes in humans
Authors
KeywordsAlveolar bone
Dimensional change
Extraction
Hard tissue
Human
Removal of teeth
Resorption
Soft tissue
Systematic review
Issue Date2012
PublisherWiley-Blackwell Publishing, Inc.. The Journal's web site is located at http://www.blackwellpublishing.com/journals/CLR
Citation
Clinical Oral Implants Research, 2012, v. 23 SUPPL. 5, p. 1-21 How to Cite?
AbstractBackground: Removal of teeth results in both horizontal and vertical changes of hard and soft tissue dimensions. The magnitude of these changes is important for decision-making and comprehensive treatment planning, with provisions for possible solutions to expected complications during prosthetic rehabilitation. Objectives: To review all English dental literature to assess the magnitude of dimensional changes of both the hard and soft tissues of the alveolar ridge up to 12 months following tooth extraction in humans. Methods: An electronic MEDLINE and CENTRAL search complemented by manual searching was conducted to identify randomized controlled clinical trials and prospective cohort studies on hard and soft tissue dimensional changes after tooth extraction. Only studies reporting on undisturbed post-extraction dimensional changes relative to a fixed reference point over a clearly stated time period were included. Assessment of the identified studies and data extraction was performed independently by two reviewers. Data collected were reported by descriptive methods. Weighted means and percentages of the dimensional changes over time were calculated where appropriate. Results: The search provided 3954 titles and 238 abstracts. Full text analysis was performed for 104 articles resulting in 20 studies that met the inclusion criteria. In human hard tissue, horizontal dimensional reduction (3.79 ± 0.23 mm) was more than vertical reduction (1.24 ± 0.11 mm on buccal, 0.84 ± 0.62 mm on mesial and 0.80 ± 0.71 mm on distal sites) at 6 months. Percentage vertical dimensional change was 11-22% at 6 months. Percentage horizontal dimensional change was 32% at 3 months, and 29-63% at 6-7 months. Soft tissue changes demonstrated 0.4-0.5 mm gain of thickness at 6 months on the buccal and lingual aspects. Horizontal dimensional changes of hard and soft tissue (loss of 0.1-6.1 mm) was more substantial than vertical change (loss 0.9 mm to gain 0.4 mm) during observation periods of up to 12 months, when study casts were utilized as a means of documenting the changes. Conclusions: Human re-entry studies showed horizontal bone loss of 29-63% and vertical bone loss of 11-22% after 6 months following tooth extraction. These studies demonstrated rapid reductions in the first 3-6 months that was followed by gradual reductions in dimensions thereafter. © 2011 John Wiley & Sons A/S.
Persistent Identifierhttp://hdl.handle.net/10722/144506
ISSN
2015 Impact Factor: 3.464
2015 SCImago Journal Rankings: 1.427
ISI Accession Number ID
Funding AgencyGrant Number
Osteology Foundation, Lucerne, Switzerland
Funding Information:

This study has been made possible by an educational grant of the Osteology Foundation, Lucerne, Switzerland.

References

 

DC FieldValueLanguage
dc.contributor.authorTan, WLen_HK
dc.contributor.authorWong, TLTen_HK
dc.contributor.authorWong, MCMen_HK
dc.contributor.authorLang, NPen_HK
dc.date.accessioned2012-02-03T06:11:29Z-
dc.date.available2012-02-03T06:11:29Z-
dc.date.issued2012en_HK
dc.identifier.citationClinical Oral Implants Research, 2012, v. 23 SUPPL. 5, p. 1-21en_HK
dc.identifier.issn0905-7161en_HK
dc.identifier.urihttp://hdl.handle.net/10722/144506-
dc.description.abstractBackground: Removal of teeth results in both horizontal and vertical changes of hard and soft tissue dimensions. The magnitude of these changes is important for decision-making and comprehensive treatment planning, with provisions for possible solutions to expected complications during prosthetic rehabilitation. Objectives: To review all English dental literature to assess the magnitude of dimensional changes of both the hard and soft tissues of the alveolar ridge up to 12 months following tooth extraction in humans. Methods: An electronic MEDLINE and CENTRAL search complemented by manual searching was conducted to identify randomized controlled clinical trials and prospective cohort studies on hard and soft tissue dimensional changes after tooth extraction. Only studies reporting on undisturbed post-extraction dimensional changes relative to a fixed reference point over a clearly stated time period were included. Assessment of the identified studies and data extraction was performed independently by two reviewers. Data collected were reported by descriptive methods. Weighted means and percentages of the dimensional changes over time were calculated where appropriate. Results: The search provided 3954 titles and 238 abstracts. Full text analysis was performed for 104 articles resulting in 20 studies that met the inclusion criteria. In human hard tissue, horizontal dimensional reduction (3.79 ± 0.23 mm) was more than vertical reduction (1.24 ± 0.11 mm on buccal, 0.84 ± 0.62 mm on mesial and 0.80 ± 0.71 mm on distal sites) at 6 months. Percentage vertical dimensional change was 11-22% at 6 months. Percentage horizontal dimensional change was 32% at 3 months, and 29-63% at 6-7 months. Soft tissue changes demonstrated 0.4-0.5 mm gain of thickness at 6 months on the buccal and lingual aspects. Horizontal dimensional changes of hard and soft tissue (loss of 0.1-6.1 mm) was more substantial than vertical change (loss 0.9 mm to gain 0.4 mm) during observation periods of up to 12 months, when study casts were utilized as a means of documenting the changes. Conclusions: Human re-entry studies showed horizontal bone loss of 29-63% and vertical bone loss of 11-22% after 6 months following tooth extraction. These studies demonstrated rapid reductions in the first 3-6 months that was followed by gradual reductions in dimensions thereafter. © 2011 John Wiley & Sons A/S.en_HK
dc.languageengen_US
dc.publisherWiley-Blackwell Publishing, Inc.. The Journal's web site is located at http://www.blackwellpublishing.com/journals/CLRen_HK
dc.relation.ispartofClinical Oral Implants Researchen_HK
dc.rightsThe definitive version is available at www3.interscience.wiley.com-
dc.subjectAlveolar boneen_HK
dc.subjectDimensional changeen_HK
dc.subjectExtractionen_HK
dc.subjectHard tissueen_HK
dc.subjectHumanen_HK
dc.subjectRemoval of teethen_HK
dc.subjectResorptionen_HK
dc.subjectSoft tissueen_HK
dc.subjectSystematic reviewen_HK
dc.subject.meshAlveolar Bone Loss - etiologyen_HK
dc.subject.meshAlveolar Process - surgeryen_HK
dc.subject.meshTooth Extraction - adverse effectsen_HK
dc.subject.meshTooth Socket - surgeryen_HK
dc.subject.meshVertical Dimensionen_HK
dc.titleA systematic review of post-extractional alveolar hard and soft tissue dimensional changes in humansen_HK
dc.typeArticleen_HK
dc.identifier.emailTan, WL: wltan@hku.hken_HK
dc.identifier.emailLang, NP: nplang@hkucc.hku.hken_HK
dc.identifier.authorityTan, WL=rp01726en_HK
dc.identifier.authorityLang, NP=rp00031en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1111/j.1600-0501.2011.02375.xen_HK
dc.identifier.pmid22211303-
dc.identifier.scopuseid_2-s2.0-84855225419en_HK
dc.identifier.hkuros198354en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84855225419&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume23en_HK
dc.identifier.issueSUPPL. 5en_HK
dc.identifier.spage1en_HK
dc.identifier.epage21en_HK
dc.identifier.isiWOS:000298600900002-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridTan, WL=54881009500en_HK
dc.identifier.scopusauthoridWong, TLT=54880725700en_HK
dc.identifier.scopusauthoridWong, MCM=54880797100en_HK
dc.identifier.scopusauthoridLang, NP=7201577367en_HK

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