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Peri-implant bone density around implants of different lengths: A 3-year follow-up of a randomized clinical trial


Sahrmann, Philipp; Schoen, Patrizia; Naenni, Nadja; Jung, Ronald; Attin, Thomas; Schmidlin, Patrick R (2017). Peri-implant bone density around implants of different lengths: A 3-year follow-up of a randomized clinical trial. Journal of Clinical Periodontology, 44(7):762-768.

Abstract

OBJECTIVES Short dental implants are frequently placed, however, little is known about the effect of the loading force regarding an enhanced crown-to-implant ratio. The aim of this study was therefore to assess bone density changes after a 3-year period, on radiographs acquired from a randomized, controlled two-centre clinical study comparing implants of 6 and 10 mm of length. MATERIALS AND METHODS Three predefined areas were chosen on standardized X-rays in order to assess grey-scale values of the peri-implant bone: One at the tip of the apex and two at half-length on the mesial and distal sides of the implant. Radiographs at all follow-up appointments had previously been calibrated using control fields in areas of constant density. RESULTS Around short implants, peri-implant bone displayed significantly higher differences in grey-scale values (p = .031) after 3 years, indicating a higher degree of mineralization. This phenomenon was not observed around long implants. CONCLUSIONS A higher degree of mineralization around short implants was recorded. Whether this finding goes along with hampered bone adaptability, and accordingly, higher failure rates of short implants must be studied further in long-term clinical trials.

Abstract

OBJECTIVES Short dental implants are frequently placed, however, little is known about the effect of the loading force regarding an enhanced crown-to-implant ratio. The aim of this study was therefore to assess bone density changes after a 3-year period, on radiographs acquired from a randomized, controlled two-centre clinical study comparing implants of 6 and 10 mm of length. MATERIALS AND METHODS Three predefined areas were chosen on standardized X-rays in order to assess grey-scale values of the peri-implant bone: One at the tip of the apex and two at half-length on the mesial and distal sides of the implant. Radiographs at all follow-up appointments had previously been calibrated using control fields in areas of constant density. RESULTS Around short implants, peri-implant bone displayed significantly higher differences in grey-scale values (p = .031) after 3 years, indicating a higher degree of mineralization. This phenomenon was not observed around long implants. CONCLUSIONS A higher degree of mineralization around short implants was recorded. Whether this finding goes along with hampered bone adaptability, and accordingly, higher failure rates of short implants must be studied further in long-term clinical trials.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic for Preventive Dentistry, Periodontology and Cariology
04 Faculty of Medicine > Center for Dental Medicine > Clinic for Fixed and Removable Prosthodontics
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:July 2017
Deposited On:12 Jan 2018 11:49
Last Modified:19 Feb 2018 10:19
Publisher:Wiley-Blackwell Publishing, Inc.
ISSN:0303-6979
OA Status:Closed
Publisher DOI:https://doi.org/10.1111/jcpe.12737
PubMed ID:28453221

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