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Article: Clinical and radiographic changes at implants supporting single-unit crowns (SCs) and fixed dental prostheses (FDPs) with one cantilever extension: a retrospective study

TitleClinical and radiographic changes at implants supporting single-unit crowns (SCs) and fixed dental prostheses (FDPs) with one cantilever extension: a retrospective study
Authors
KeywordsBone level
Bone loss
Cantilever extension
Dental implants
Fixed dental prosthesis
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 n. 5, p. 550-555 How to Cite?
Abstract
OBJECTIVES: To evaluate the clinical and radiographic changes at implants in posterior maxillary and mandibular areas supporting single-unit crowns (SCs) and fixed dental prostheses (FDPs) with one mesial or distal cantilever extension after an observation period of at least 3 years. MATERIAL AND METHODS: Seventeen subjects with 19 implant-supported SCs and 21 subjects with 21 implant-supported FDPs fulfilled the inclusion criteria. All FDPs were supported by two implants and had a span of 3-4 units. All reconstructions were incorporated in the posterior maxilla or mandible. The mesial and distal radiographic marginal bone loss from baseline (i.e. delivery of the reconstruction) to the follow-up examination was averaged and compared between SCs supporting one cantilever extension with that of implants supporting FDPs adjacent to or distant from the cantilever extension. Changes in mean pocket probing depth (PPD) were calculated and compared between the three groups. RESULTS: The mean observation period was 78.2 +/- 34.5 months for SCs supported by one implant and 67.8 +/- 29.8 months for FDPs supported by two implants. No implant loss occurred, yielding a 100% survival rate. At baseline, the mean radiographic bone levels +/- SD were 2.6 +/- 0.3 mm for implants supporting SCs, 2.6 +/- 0.3 mm for implants of FDPs adjacent to the cantilever extension, and 2.4 +/- 0.5 mm for implants of FDPs distant from the cantilever extension. At follow-up, the corresponding mean bone levels +/- SD were 2.7 +/- 0.4, 2.7 +/- 0.5, and 2.8 +/- 0.5 mm, respectively. No statistically significant differences (P > 0.05) were observed comparing the mean marginal bone loss between the three groups. Moreover, mean changes in PPD between baseline and follow-up were not statistically significantly different (P > 0.05) between the three groups. CONCLUSION: The presence of one mesial or distal cantilever extension in the posterior maxilla or mandible does not jeopardize the marginal bone levels of implants supporting SCs or short-span FDPs after a mean observation period of at least 5 years.
Persistent Identifierhttp://hdl.handle.net/10722/146824
ISSN
2013 Impact Factor: 3.123
ISI Accession Number ID

 

Author Affiliations
  1. The University of Hong Kong
  2. Università degli Studi di Napoli Federico II
  3. Universität Bern
DC FieldValueLanguage
dc.contributor.authorAglietta, Men_US
dc.contributor.authorIorio Siciliano, Ven_US
dc.contributor.authorBlasi, Aen_US
dc.contributor.authorSculean, Aen_US
dc.contributor.authorBrägger, Uen_US
dc.contributor.authorLang, NPen_US
dc.contributor.authorSalvi, GEen_US
dc.date.accessioned2012-05-23T05:28:04Z-
dc.date.available2012-05-23T05:28:04Z-
dc.date.issued2012en_US
dc.identifier.citationClinical Oral Implants Research, 2012, v. 23 n. 5, p. 550-555en_US
dc.identifier.issn0905-7161en_US
dc.identifier.urihttp://hdl.handle.net/10722/146824-
dc.description.abstractOBJECTIVES: To evaluate the clinical and radiographic changes at implants in posterior maxillary and mandibular areas supporting single-unit crowns (SCs) and fixed dental prostheses (FDPs) with one mesial or distal cantilever extension after an observation period of at least 3 years. MATERIAL AND METHODS: Seventeen subjects with 19 implant-supported SCs and 21 subjects with 21 implant-supported FDPs fulfilled the inclusion criteria. All FDPs were supported by two implants and had a span of 3-4 units. All reconstructions were incorporated in the posterior maxilla or mandible. The mesial and distal radiographic marginal bone loss from baseline (i.e. delivery of the reconstruction) to the follow-up examination was averaged and compared between SCs supporting one cantilever extension with that of implants supporting FDPs adjacent to or distant from the cantilever extension. Changes in mean pocket probing depth (PPD) were calculated and compared between the three groups. RESULTS: The mean observation period was 78.2 +/- 34.5 months for SCs supported by one implant and 67.8 +/- 29.8 months for FDPs supported by two implants. No implant loss occurred, yielding a 100% survival rate. At baseline, the mean radiographic bone levels +/- SD were 2.6 +/- 0.3 mm for implants supporting SCs, 2.6 +/- 0.3 mm for implants of FDPs adjacent to the cantilever extension, and 2.4 +/- 0.5 mm for implants of FDPs distant from the cantilever extension. At follow-up, the corresponding mean bone levels +/- SD were 2.7 +/- 0.4, 2.7 +/- 0.5, and 2.8 +/- 0.5 mm, respectively. No statistically significant differences (P > 0.05) were observed comparing the mean marginal bone loss between the three groups. Moreover, mean changes in PPD between baseline and follow-up were not statistically significantly different (P > 0.05) between the three groups. CONCLUSION: The presence of one mesial or distal cantilever extension in the posterior maxilla or mandible does not jeopardize the marginal bone levels of implants supporting SCs or short-span FDPs after a mean observation period of at least 5 years.-
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.rightsThe definitive version is available at www3.interscience.wiley.comen_US
dc.subjectBone level-
dc.subjectBone loss-
dc.subjectCantilever extension-
dc.subjectDental implants-
dc.subjectFixed dental prosthesis-
dc.titleClinical and radiographic changes at implants supporting single-unit crowns (SCs) and fixed dental prostheses (FDPs) with one cantilever extension: a retrospective studyen_US
dc.typeArticleen_US
dc.identifier.emailLang, NP: nplang@hkucc.hku.hken_US
dc.identifier.emailSalvi, GE: giovanni.salvi@zmk.unibe.ch-
dc.identifier.authorityLang, NP=rp00031en_US
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1111/j.1600-0501.2011.02391.x-
dc.identifier.pmid22250868-
dc.identifier.scopuseid_2-s2.0-84859705396-
dc.identifier.hkuros199425en_US
dc.identifier.volume23en_US
dc.identifier.issue5en_US
dc.identifier.spage550en_US
dc.identifier.epage555en_US
dc.identifier.isiWOS:000302606800005-
dc.publisher.placeUnited Statesen_US

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