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Novel expandable short dental implants in situations with reduced vertical bone height—technical note and first results

PURPOSE: Short implants often have the disadvantage of reduced primary stability. The present study was conducted to evaluate the feasibility and safety of a new expandable short dental implant system intended to increase primary stability. METHODS: As a “proof of concept”, a prospective clinical co...

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Autores principales: Reich, Waldemar, Schweyen, Ramona, Heinzelmann, Christian, Hey, Jeremias, Al-Nawas, Bilal, Eckert, Alexander Walter
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5662521/
https://www.ncbi.nlm.nih.gov/pubmed/29086193
http://dx.doi.org/10.1186/s40729-017-0107-1
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author Reich, Waldemar
Schweyen, Ramona
Heinzelmann, Christian
Hey, Jeremias
Al-Nawas, Bilal
Eckert, Alexander Walter
author_facet Reich, Waldemar
Schweyen, Ramona
Heinzelmann, Christian
Hey, Jeremias
Al-Nawas, Bilal
Eckert, Alexander Walter
author_sort Reich, Waldemar
collection PubMed
description PURPOSE: Short implants often have the disadvantage of reduced primary stability. The present study was conducted to evaluate the feasibility and safety of a new expandable short dental implant system intended to increase primary stability. METHODS: As a “proof of concept”, a prospective clinical cohort study was designed to investigate intraoperative handling, primary and secondary implant stability (resonance frequency analysis), crestal bone changes, implant survival and implant success, of an innovative short expandable screw implant. From 2014 until 2015, 9 patients (7–9-mm vertical bone height) with 30 implants (length 5–7 mm, diameter 3.75–4.1 mm) were recruited consecutively. RESULTS: All 30 implants in the 9 patients (age 44 to 80 years) could be inserted and expanded without intraoperative problems. Over the 3-year follow-up period, the implant success rate was 28/30 (93.3%). The mean implant stability quotients (ISQ) were as follows: primary stability, 69.7 ± 10.3 ISQ units, and secondary stability, 69.8 ± 10.2 ISQ units (p = 0.780), both without significant differences between the maxilla and mandible (p ≥ 0.780). The mean crestal bone changes after loading were (each measured from the baseline) as follows: in the first year, 1.0 ± 0.9 mm in the maxilla and 0.7 ± 0.4 mm in the mandible, and in the second year, 1.3 ± 0.8 mm and 1.0 ± 0.7 mm, respectively. CONCLUSIONS: Compared to other prospective studies, in this indication, the success rate is acceptable. Implant stability shows high initial and secondary stability values. The system might present an extension of functional rehabilitation to the group of elderly patients with limited vertical bone height. Further long-term investigations should directly compare this compressive implant with standard short implants. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s40729-017-0107-1) contains supplementary material, which is available to authorized users.
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spelling pubmed-56625212017-11-15 Novel expandable short dental implants in situations with reduced vertical bone height—technical note and first results Reich, Waldemar Schweyen, Ramona Heinzelmann, Christian Hey, Jeremias Al-Nawas, Bilal Eckert, Alexander Walter Int J Implant Dent Technical Advance PURPOSE: Short implants often have the disadvantage of reduced primary stability. The present study was conducted to evaluate the feasibility and safety of a new expandable short dental implant system intended to increase primary stability. METHODS: As a “proof of concept”, a prospective clinical cohort study was designed to investigate intraoperative handling, primary and secondary implant stability (resonance frequency analysis), crestal bone changes, implant survival and implant success, of an innovative short expandable screw implant. From 2014 until 2015, 9 patients (7–9-mm vertical bone height) with 30 implants (length 5–7 mm, diameter 3.75–4.1 mm) were recruited consecutively. RESULTS: All 30 implants in the 9 patients (age 44 to 80 years) could be inserted and expanded without intraoperative problems. Over the 3-year follow-up period, the implant success rate was 28/30 (93.3%). The mean implant stability quotients (ISQ) were as follows: primary stability, 69.7 ± 10.3 ISQ units, and secondary stability, 69.8 ± 10.2 ISQ units (p = 0.780), both without significant differences between the maxilla and mandible (p ≥ 0.780). The mean crestal bone changes after loading were (each measured from the baseline) as follows: in the first year, 1.0 ± 0.9 mm in the maxilla and 0.7 ± 0.4 mm in the mandible, and in the second year, 1.3 ± 0.8 mm and 1.0 ± 0.7 mm, respectively. CONCLUSIONS: Compared to other prospective studies, in this indication, the success rate is acceptable. Implant stability shows high initial and secondary stability values. The system might present an extension of functional rehabilitation to the group of elderly patients with limited vertical bone height. Further long-term investigations should directly compare this compressive implant with standard short implants. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s40729-017-0107-1) contains supplementary material, which is available to authorized users. Springer Berlin Heidelberg 2017-10-30 /pmc/articles/PMC5662521/ /pubmed/29086193 http://dx.doi.org/10.1186/s40729-017-0107-1 Text en © The Author(s). 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Technical Advance
Reich, Waldemar
Schweyen, Ramona
Heinzelmann, Christian
Hey, Jeremias
Al-Nawas, Bilal
Eckert, Alexander Walter
Novel expandable short dental implants in situations with reduced vertical bone height—technical note and first results
title Novel expandable short dental implants in situations with reduced vertical bone height—technical note and first results
title_full Novel expandable short dental implants in situations with reduced vertical bone height—technical note and first results
title_fullStr Novel expandable short dental implants in situations with reduced vertical bone height—technical note and first results
title_full_unstemmed Novel expandable short dental implants in situations with reduced vertical bone height—technical note and first results
title_short Novel expandable short dental implants in situations with reduced vertical bone height—technical note and first results
title_sort novel expandable short dental implants in situations with reduced vertical bone height—technical note and first results
topic Technical Advance
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5662521/
https://www.ncbi.nlm.nih.gov/pubmed/29086193
http://dx.doi.org/10.1186/s40729-017-0107-1
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