Influence of the crown‐to‐implant length ratio on the clinical performance of implants supporting single crown restorations: a cross‐sectional retrospective 5‐year investigation
Identifieur interne : 003714 ( Istex/Corpus ); précédent : 003713; suivant : 003715Influence of the crown‐to‐implant length ratio on the clinical performance of implants supporting single crown restorations: a cross‐sectional retrospective 5‐year investigation
Auteurs : David Schneider ; Lukas Witt ; Christoph H. F. H MmerleSource :
- Clinical Oral Implants Research [ 0905-7161 ] ; 2012-02.
English descriptors
- KwdEn :
- Abutment, Abutment teeth, Biological complications, Biological length ratio ratio, Biological ratio, Blanes, Blanes bernard, Bone loss, Bruxism, Clinical implant dentistry, Clinical performance, Clinical periodontology, Complication, Complication rates, Continuous variables, Cumulative survival rate, Dental implants, Dental material science, Dentition, Discrete variables, Edentulous patients, Further studies, Healing time, Higher ratio, Higher risk, Implant, Implant diameter, Implant failure, Implant length, Implant restorations, Implant shoulder, Implant survival, Implant survival rate, Implant threads, Implant treatment, Implant type, Implants research, International journal, John wiley sons, John wiley sons schneider, Length ratio, Length ratio ratio, Lever principle, Marginal bone, Marginal bone level, Marginal bone loss, Median range, More implant failures, Narrow distribution, Natural dentition, Nite element analysis, Oral impl, Oral maxillofacial implants, Oral medicine, Outcome parameters, Partial dentures, Periodontitis, Posterior maxilla, Posterior region, Posterior segments, Present study, Prospective study, Prosthetic, Prosthetic dentistry, Prosthetic designs, Range years, Recent studies, Regression analysis, Removable prosthodontics, Retention mode, Retrospective study, Schneider, Secondary predictors, Short implants, Single crown restorations, Single crowns, Single tooth restorations, Smoking habits, Statistical analyses, Statistical analysis, Statistical unit, Stress distribution, Survival rates, Systematic review, Technical complications, Technical ratio, Terminal position, Tooth extraction, Visible contact.
- Teeft :
- Abutment, Abutment teeth, Biological complications, Biological length ratio ratio, Biological ratio, Blanes, Blanes bernard, Bone loss, Bruxism, Clinical implant dentistry, Clinical performance, Clinical periodontology, Complication, Complication rates, Continuous variables, Cumulative survival rate, Dental implants, Dental material science, Dentition, Discrete variables, Edentulous patients, Further studies, Healing time, Higher ratio, Higher risk, Implant, Implant diameter, Implant failure, Implant length, Implant restorations, Implant shoulder, Implant survival, Implant survival rate, Implant threads, Implant treatment, Implant type, Implants research, International journal, John wiley sons, John wiley sons schneider, Length ratio, Length ratio ratio, Lever principle, Marginal bone, Marginal bone level, Marginal bone loss, Median range, More implant failures, Narrow distribution, Natural dentition, Nite element analysis, Oral impl, Oral maxillofacial implants, Oral medicine, Outcome parameters, Partial dentures, Periodontitis, Posterior maxilla, Posterior region, Posterior segments, Present study, Prospective study, Prosthetic, Prosthetic dentistry, Prosthetic designs, Range years, Recent studies, Regression analysis, Removable prosthodontics, Retention mode, Retrospective study, Schneider, Secondary predictors, Short implants, Single crown restorations, Single crowns, Single tooth restorations, Smoking habits, Statistical analyses, Statistical analysis, Statistical unit, Stress distribution, Survival rates, Systematic review, Technical complications, Technical ratio, Terminal position, Tooth extraction, Visible contact.
Abstract
Purpose: The aim of this study was to investigate the influence of the crown‐to‐implant length ratio (c/i ratio) on the implant survival, changes of the marginal bone level (MBL) and the occurrence of biological and technical complications.
Url:
DOI: 10.1111/j.1600-0501.2011.02230.x
Links to Exploration step
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<front><div type="abstract">Purpose: The aim of this study was to investigate the influence of the crown‐to‐implant length ratio (c/i ratio) on the implant survival, changes of the marginal bone level (MBL) and the occurrence of biological and technical complications.</div>
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<author xml:id="author-0000"><persName><forename type="first">David</forename>
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<profileDesc><abstract xml:lang="en" style="main"><head>Abstract</head>
<p><hi rend="bold">Purpose: </hi>
The aim of this study was to investigate the influence of the crown‐to‐implant length ratio (c/i ratio) on the implant survival, changes of the marginal bone level (MBL) and the occurrence of biological and technical complications.</p>
<p><hi rend="bold">Material and methods: </hi>
This cross‐sectional retrospective study included all patients with implants in the posterior segments supporting single crown restorations with a minimum follow‐up of 5 years. All patients were questioned and examined clinically and radiographically. The technical and biological c/i ratio and the MBL were measured on digitized periapical radiographs. The following outcome parameters in relation to the c/i ratio and the co‐factors were statistically analyzed: implant survival rate, MBL, occurrence of technical and biological complications. For statistical analysis, regression, correlation and survival analyses were applied (<hi rend="italic">P</hi>
<0.05).</p>
<p><hi rend="bold">Results: </hi>
Seventy patients (mean age of 50.7 years [range 19.8–76.6 years]) with a total of 100 implants (24 Straumann type, 76 Brånemark type) were included in this study. The mean follow‐up period was 6.2 years (range 4.73–11.7 years). Six implants failed during the follow‐up period, yielding a cumulative survival rate of 95.8% at 5 years in function. The mean technical c/i ratio was 1.04 (±0.26, range 0.59–2.01). The mean biological c/i ratio was 1.48 (±0.42, range 0.82–3.24). No statistically significant influence of the technical and biological c/i ratio was found on the implant survival, MBL and occurrence of technical and biological complications. When adjusted for the biological c/i ratio, smoking was the only co‐factor significantly associated with implant failure and biological complications.</p>
<p><hi rend="bold">Conclusion: </hi>
In the present study, the c/i ratio did not influence the clinical performance of implants supporting single crown restorations in the posterior segments of the jaw within the range tested.</p>
<p><hi rend="bold">To cite this article:</hi>
Schneider D, Witt L, Hämmerle CHF. Influence of the crown‐to‐implant length ratio on the clinical performance of implants supporting single crown restorations: a cross‐sectional retrospective 5‐year investigation.
<hi rend="italic">Clin. Oral Impl. Res</hi>
. <hi rend="bold">23</hi>
, 2012; 169–174.
doi: 10.1111/j.1600‐0501.2011.02230.x</p>
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<correspondenceTo><b>Corresponding author:</b>
<i>Dr. med., Dr. med. dent. David Schneider</i>
Clinic of Fixed and Removable Prosthodontics and Dental Material Science
University of Zurich,
Plattenstrasse 11
8032 Zurich
Switzerland
Tel.:+41 44 634 32 51
Fax:+41 44 634 43 05
e‐mail: <email normalForm="david.schneider@zzm.uzh.ch">david.schneider@zzm.uzh.ch</email>
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<p><b>Purpose: </b>
The aim of this study was to investigate the influence of the crown‐to‐implant length ratio (c/i ratio) on the implant survival, changes of the marginal bone level (MBL) and the occurrence of biological and technical complications.</p>
<p><b>Material and methods: </b>
This cross‐sectional retrospective study included all patients with implants in the posterior segments supporting single crown restorations with a minimum follow‐up of 5 years. All patients were questioned and examined clinically and radiographically. The technical and biological c/i ratio and the MBL were measured on digitized periapical radiographs. The following outcome parameters in relation to the c/i ratio and the co‐factors were statistically analyzed: implant survival rate, MBL, occurrence of technical and biological complications. For statistical analysis, regression, correlation and survival analyses were applied (<i>P</i>
<0.05).</p>
<p><b>Results: </b>
Seventy patients (mean age of 50.7 years [range 19.8–76.6 years]) with a total of 100 implants (24 Straumann type, 76 Brånemark type) were included in this study. The mean follow‐up period was 6.2 years (range 4.73–11.7 years). Six implants failed during the follow‐up period, yielding a cumulative survival rate of 95.8% at 5 years in function. The mean technical c/i ratio was 1.04 (±0.26, range 0.59–2.01). The mean biological c/i ratio was 1.48 (±0.42, range 0.82–3.24). No statistically significant influence of the technical and biological c/i ratio was found on the implant survival, MBL and occurrence of technical and biological complications. When adjusted for the biological c/i ratio, smoking was the only co‐factor significantly associated with implant failure and biological complications.</p>
<p><b>Conclusion: </b>
In the present study, the c/i ratio did not influence the clinical performance of implants supporting single crown restorations in the posterior segments of the jaw within the range tested.</p>
<p><b>To cite this article:</b>
Schneider D, Witt L, Hämmerle CHF. Influence of the crown‐to‐implant length ratio on the clinical performance of implants supporting single crown restorations: a cross‐sectional retrospective 5‐year investigation.
<i>Clin. Oral Impl. Res</i>
. <b>23</b>
, 2012; 169–174.
doi: 10.1111/j.1600‐0501.2011.02230.x</p>
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<abstract>Purpose: The aim of this study was to investigate the influence of the crown‐to‐implant length ratio (c/i ratio) on the implant survival, changes of the marginal bone level (MBL) and the occurrence of biological and technical complications.</abstract>
<abstract>Material and methods: This cross‐sectional retrospective study included all patients with implants in the posterior segments supporting single crown restorations with a minimum follow‐up of 5 years. All patients were questioned and examined clinically and radiographically. The technical and biological c/i ratio and the MBL were measured on digitized periapical radiographs. The following outcome parameters in relation to the c/i ratio and the co‐factors were statistically analyzed: implant survival rate, MBL, occurrence of technical and biological complications. For statistical analysis, regression, correlation and survival analyses were applied (P<0.05).</abstract>
<abstract>Results: Seventy patients (mean age of 50.7 years [range 19.8–76.6 years]) with a total of 100 implants (24 Straumann type, 76 Brånemark type) were included in this study. The mean follow‐up period was 6.2 years (range 4.73–11.7 years). Six implants failed during the follow‐up period, yielding a cumulative survival rate of 95.8% at 5 years in function. The mean technical c/i ratio was 1.04 (±0.26, range 0.59–2.01). The mean biological c/i ratio was 1.48 (±0.42, range 0.82–3.24). No statistically significant influence of the technical and biological c/i ratio was found on the implant survival, MBL and occurrence of technical and biological complications. When adjusted for the biological c/i ratio, smoking was the only co‐factor significantly associated with implant failure and biological complications.</abstract>
<abstract>Conclusion: In the present study, the c/i ratio did not influence the clinical performance of implants supporting single crown restorations in the posterior segments of the jaw within the range tested.</abstract>
<abstract>To cite this article:
Schneider D, Witt L, Hämmerle CHF. Influence of the crown‐to‐implant length ratio on the clinical performance of implants supporting single crown restorations: a cross‐sectional retrospective 5‐year investigation.
Clin. Oral Impl. Res. 23, 2012; 169–174.
doi: 10.1111/j.1600‐0501.2011.02230.x</abstract>
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