Abstract:
BACKGROUND:Dental implants are available in different materials, shapes and with different surface characteristics. In particular, numerous implant surface modifications have been developed for enhancing clinical performance. OBJECTIVES:To test the null hypothesis of no difference in clinical performance between various root-formed osseointegrated dental implant types. SEARCH STRATEGY:We searched the Cochrane Oral Health Group's Trials Register, the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE and EMBASE. Handsearching included several dental journals. We checked the bibliographies of relevant clinical trials and review articles for studies outside the handsearched journals. We wrote to authors of the identified randomised controlled trials (RCTs), to more than 55 oral implant manufacturers; we used personal contacts and we asked on an internet discussion group in an attempt to identify unpublished or ongoing RCTs. No language restriction was applied. The last electronic search was conducted on 13 June 2007. SELECTION CRITERIA:All RCTs of oral implants comparing osseointegrated implants with different materials, shapes and surface properties having a follow up of at least 1 year. DATA COLLECTION AND ANALYSIS:Screening of eligible studies, assessment of the methodological quality of the trials and data extraction were conducted in duplicate and independently by two review authors. Results were expressed as random-effects models using mean differences for continuous outcomes and risk ratios (RR) for dichotomous outcomes with 95% confidence intervals (CI). MAIN RESULTS:Forty different RCTs were identified. Sixteen of these RCTs, reporting results from a total of 771 patients, were suitable for inclusion in the review. Eighteen different implant types were compared with a follow up ranging from 1 to 5 years. All implants were made in commercially pure titanium and had different shapes and surface preparations. On a 'per patient' rather than 'per implant' basis no significant differences were observed between various implant types for implant failures. There were statistically significant differences for perimplant bone level changes on intraoral radiographs in three comparisons in two trials. In one trial there was more bone loss only at 1 year for IMZ implants compared to Brånemark (mean difference 0.60 mm; 95% CI 0.01 to 1.10) and to ITI implants (mean difference 0.50 mm; 95% CI 0.01 to 0.99). In the other trial Southern implants displayed more bone loss at 5 years than Steri-Oss implants (mean difference -0.35 mm; 95% CI -0.70 to -0.01). However this difference disappeared in the meta-analysis. More implants with rough surfaces were affected by perimplantitis (RR 0.80; 95% CI 0.67 to 0.96) meaning that turned implant surfaces had a 20% reduction in risk of being affected by perimplantitis over a 3-year period. AUTHORS' CONCLUSIONS:Based on the available results of RCTs, there is limited evidence showing that implants with relatively smooth (turned) surfaces are less prone to lose bone due to chronic infection (perimplantitis) than implants with rougher surfaces. On the other hand, there is no evidence showing that any particular type of dental implant has superior long-term success. These findings are based on a few RCTs, often at high risk of bias, with few participants and relatively short follow-up periods. More RCTs should be conducted, with follow up of at least 5 years including a sufficient number of patients to detect a true difference. Such trials should be reported according to the CONSORT recommendations (http://www.consort-statement.org/).
journal_name
Cochrane Database Syst Revjournal_title
The Cochrane database of systematic reviewsauthors
Esposito M,Murray-Curtis L,Grusovin MG,Coulthard P,Worthington HVdoi
10.1002/14651858.CD003815.pub3subject
Has Abstractpub_date
2007-10-17 00:00:00pages
CD003815issue
4issn
1469-493Xpub_type
杂志文章,meta分析,评审abstract:BACKGROUND:Carpal tunnel syndrome is a common problem and surgical decompression of the carpal tunnel is the most effective treatment. After surgical decompression, the palmar skin may be closed using either absorbable or non-absorbable sutures. To date, there is conflicting evidence regarding the ideal suture material...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD011757.pub2
更新日期:2018-02-01 00:00:00
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journal_title:The Cochrane database of systematic reviews
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doi:10.1002/14651858.CD000124
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journal_title:The Cochrane database of systematic reviews
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doi:10.1002/14651858.CD000138
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doi:10.1002/14651858.CD002784.pub3
更新日期:2018-08-10 00:00:00
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journal_title:The Cochrane database of systematic reviews
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doi:10.1002/14651858.CD011826.pub2
更新日期:2016-08-29 00:00:00
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doi:10.1002/14651858.CD001945
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journal_title:The Cochrane database of systematic reviews
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doi:10.1002/14651858.CD001340.pub2
更新日期:2008-07-16 00:00:00
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journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章
doi:10.1002/14651858.CD013458.pub2
更新日期:2020-09-04 00:00:00
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journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD002766.pub4
更新日期:2016-05-03 00:00:00
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abstract:BACKGROUND:Trachoma is the world's leading cause of preventable blindness. In 1997 the World Health Organization launched an initiative on trachoma control based on the 'SAFE' strategy (surgery, antibiotics, facial cleanliness and environmental improvement). OBJECTIVES:The aim of this review is to assess the evidence ...
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pub_type: 杂志文章,评审
doi:10.1002/14651858.CD001860
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journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD000259
更新日期:2000-01-01 00:00:00
abstract:BACKGROUND:Dental implants require sufficient bone to be adequately stabilised. For some patients implant treatment would not be an option without bone augmentation. A variety of materials and surgical techniques are available for bone augmentation. OBJECTIVES:General objectives: To test the null hypothesis of no diff...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD003607.pub2
更新日期:2006-01-25 00:00:00
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journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章
doi:10.1002/14651858.CD013079.pub2
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journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,评审
doi:10.1002/14651858.CD009872.pub2
更新日期:2013-02-28 00:00:00
abstract:BACKGROUND:The transversus abdominis plane (TAP) block is a peripheral nerve block which anaesthetises the abdominal wall. The increasing use of TAP block, as a form of pain relief after abdominal surgery warrants evaluation of its effectiveness as an adjunctive technique to routine care and, when compared with other a...
journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD007705.pub2
更新日期:2010-12-08 00:00:00
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journal_title:The Cochrane database of systematic reviews
pub_type: 杂志文章,meta分析,评审
doi:10.1002/14651858.CD003822.pub2
更新日期:2008-10-08 00:00:00
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pub_type: 杂志文章,meta分析,评审
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doi:10.1002/14651858.CD002018.pub2
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doi:10.1002/14651858.CD003535
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