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Article: Evaluation of postsurgical crestal bone levels adjacent to non-submerged dental implants

TitleEvaluation of postsurgical crestal bone levels adjacent to non-submerged dental implants
Authors
Issue Date1998
PublisherWiley-Blackwell Publishing, Inc.. The Journal's web site is located at http://www.blackwellpublishing.com/journals/CLR
Citation
Clinical Oral Implants Research, 1998, v. 9 n. 4, p. 218-224 How to Cite?
AbstractIn most of the studies on long-term radiographic evaluations of crestal bone levels adjacent to dental implants, no baseline radiographs taken immediately postsurgically had been obtained. The aim of this study was to test the reproducibility of a simple radiographic method for linear measurements of changes in bone levels and to evaluate changes in crestal bone levels adjacent to non-submerged ITI® implants 1 year following the surgical procedure. From 128 parents enrolled in a clinical and radiographic longitudinal study 40 patients also had radiographs taken immediately postsurgically. They were, however, not obtained as "identical" images. The radiographs were mounted onto slides and projected on a screen. Mesially and distally from 57 implants triplicate linear measurements of the distance implant shoulder to bone crest were taken, using known dimensions of the implants as internal reference distances. The median difference of 213 (out of 228 possible) duplicate measurements was 0.00 mm (ranging from -1.72 mm to +1.47 mm when comparing the second to the third reading). Some 81% of the double measurements were within ±0.5 mm and the precision was 0.30 mm. In the immediate postoperative radiographs the median mesial bone level was located at 2.07 mm (distally 2.19 mm) from the implant shoulder. A statistically significant amount of bone loss in the first year was observed mesially (median=-0.78 mm) and distally (-0.85 mm) (Wilcoxon matched pairs signed rank test P≤0.001). No statistically significant influence of the implant location, the implant length, type of the implant (screw; cylinder) was observed (Kruskal-Wallis P>0.05).The age of the patients was not correlated significantly to the amount of bone loss observed. In conclusion, methodological limitations existed when evaluating linear bone changes in non-identical radiographs using reference dimensions of the implants. The amount of postsurgical bone loss estimated in other studies was confirmed when using an immediate postoperative radiograph as a baseline. © Munksgaard 1998.
Persistent Identifierhttp://hdl.handle.net/10722/154029
ISSN
2015 Impact Factor: 3.464
2015 SCImago Journal Rankings: 1.427
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBrägger, Uen_US
dc.contributor.authorHäfeli, Uen_US
dc.contributor.authorHuber, Ben_US
dc.contributor.authorHämmerle, CHFen_US
dc.contributor.authorLang, NPen_US
dc.date.accessioned2012-08-08T08:22:53Z-
dc.date.available2012-08-08T08:22:53Z-
dc.date.issued1998en_US
dc.identifier.citationClinical Oral Implants Research, 1998, v. 9 n. 4, p. 218-224en_US
dc.identifier.issn0905-7161en_US
dc.identifier.urihttp://hdl.handle.net/10722/154029-
dc.description.abstractIn most of the studies on long-term radiographic evaluations of crestal bone levels adjacent to dental implants, no baseline radiographs taken immediately postsurgically had been obtained. The aim of this study was to test the reproducibility of a simple radiographic method for linear measurements of changes in bone levels and to evaluate changes in crestal bone levels adjacent to non-submerged ITI® implants 1 year following the surgical procedure. From 128 parents enrolled in a clinical and radiographic longitudinal study 40 patients also had radiographs taken immediately postsurgically. They were, however, not obtained as "identical" images. The radiographs were mounted onto slides and projected on a screen. Mesially and distally from 57 implants triplicate linear measurements of the distance implant shoulder to bone crest were taken, using known dimensions of the implants as internal reference distances. The median difference of 213 (out of 228 possible) duplicate measurements was 0.00 mm (ranging from -1.72 mm to +1.47 mm when comparing the second to the third reading). Some 81% of the double measurements were within ±0.5 mm and the precision was 0.30 mm. In the immediate postoperative radiographs the median mesial bone level was located at 2.07 mm (distally 2.19 mm) from the implant shoulder. A statistically significant amount of bone loss in the first year was observed mesially (median=-0.78 mm) and distally (-0.85 mm) (Wilcoxon matched pairs signed rank test P≤0.001). No statistically significant influence of the implant location, the implant length, type of the implant (screw; cylinder) was observed (Kruskal-Wallis P>0.05).The age of the patients was not correlated significantly to the amount of bone loss observed. In conclusion, methodological limitations existed when evaluating linear bone changes in non-identical radiographs using reference dimensions of the implants. The amount of postsurgical bone loss estimated in other studies was confirmed when using an immediate postoperative radiograph as a baseline. © Munksgaard 1998.en_US
dc.languageengen_US
dc.publisherWiley-Blackwell Publishing, Inc.. The Journal's web site is located at http://www.blackwellpublishing.com/journals/CLRen_US
dc.relation.ispartofClinical Oral Implants Researchen_US
dc.subject.meshAdolescenten_US
dc.subject.meshAdulten_US
dc.subject.meshAgeden_US
dc.subject.meshAlveolar Bone Loss - Etiology - Radiographyen_US
dc.subject.meshDental Implantation, Endosseous - Methodsen_US
dc.subject.meshDental Implants - Adverse Effectsen_US
dc.subject.meshEvaluation Studies As Topicen_US
dc.subject.meshFemaleen_US
dc.subject.meshFollow-Up Studiesen_US
dc.subject.meshHumansen_US
dc.subject.meshMaleen_US
dc.subject.meshMiddle Ageden_US
dc.subject.meshOutcome Assessment (Health Care)en_US
dc.subject.meshProspective Studiesen_US
dc.subject.meshReproducibility Of Resultsen_US
dc.subject.meshStatistics, Nonparametricen_US
dc.titleEvaluation of postsurgical crestal bone levels adjacent to non-submerged dental implantsen_US
dc.typeArticleen_US
dc.identifier.emailLang, NP:nplang@hkucc.hku.hken_US
dc.identifier.authorityLang, NP=rp00031en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.pmid9760896en_US
dc.identifier.scopuseid_2-s2.0-0032133701en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0032133701&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume9en_US
dc.identifier.issue4en_US
dc.identifier.spage218en_US
dc.identifier.epage224en_US
dc.identifier.isiWOS:000075603900002-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridBrägger, U=7005538598en_US
dc.identifier.scopusauthoridHäfeli, U=35264286600en_US
dc.identifier.scopusauthoridHuber, B=8395743400en_US
dc.identifier.scopusauthoridHämmerle, CHF=7005331848en_US
dc.identifier.scopusauthoridLang, NP=7201577367en_US

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