Abstract:
PURPOSE:The aim of this study was to evaluate the probability of survival of cemented and screwed three-unit implant-supported fixed dental prostheses (ISFDP) using different implant-abutment horizontal matching configurations (regular vs switching platforms). METHODS:One hundred and sixty-eight implants with internal hexagon connection (4 mm diameter, 10 mm length, Emfils; Colosso Evolution System, Itú, SP, Brazil) were selected for this study according to the horizontal implant-abutment matching configuration (regular or switching) and retention method and divided in four groups (n = 21 per group) as follows: 1) regular platform cemented (IRC); 2) or screw-retained (IRS); 3) switched-platform cemented (ISC); or 4) screw-retained (ISS). Regular and platform-switched abutments (Colosso evolution, 4 mm and 3.3 mm, respectively) were torqued, and 84 three-unit metal bridges were fabricated (first molar pontic). Implants were embedded in polymethyl-methacrylate resin and subjected to step-stress accelerated life testing in water. Weibull distribution was used to determine the probability of survival for a mission of 100,000 cycles at 400 N (90% two-sided confidence intervals). Polarized light and scanning electron microscopes were used for fractographic analysis. RESULTS:The β values of 0.50, 1.19, 1.25, and 1.95 for groups IRC, IRS, ISC, and ISS respectively, indicated that fatigue accelerated the failure for all groups, except IRC. The cement-retained groups presented significantly higher probability of survival (IRC - 98%, ISC - 59%) than screw-retained groups (IRS - 23% and ISS - 0%). Screw-retained FDPs exclusively failed by abutment-screw fractures, whereas cement-retained presented implant/screw/abutment fractures. CONCLUSIONS:The probability of survival of cement-retained ISFDP was higher than screw-retained, irrespective of implant-abutment horizontal configuration.
journal_name
Clin Implant Dent Relat Resjournal_title
Clinical implant dentistry and related researchauthors
Anchieta RB,Machado LS,Hirata R,Bonfante EA,Coelho PGdoi
10.1111/cid.12363subject
Has Abstractpub_date
2016-08-01 00:00:00pages
830-9issue
4eissn
1523-0899issn
1708-8208journal_volume
18pub_type
杂志文章abstract:BACKGROUND:Improvements of soft tissue to the abutment surface results in more stable peri-implant conditions, however, few human histological studies have compared soft tissue responses around different abutment materials. PURPOSE:To describe the peri-implant tissue around 3 abutment materials; titanium, zirconia, an...
journal_title:Clinical implant dentistry and related research
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journal_title:Clinical implant dentistry and related research
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journal_title:Clinical implant dentistry and related research
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journal_title:Clinical implant dentistry and related research
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journal_title:Clinical implant dentistry and related research
pub_type: 杂志文章,多中心研究
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journal_title:Clinical implant dentistry and related research
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journal_title:Clinical implant dentistry and related research
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journal_title:Clinical implant dentistry and related research
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journal_title:Clinical implant dentistry and related research
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pub_type: 杂志文章
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journal_title:Clinical implant dentistry and related research
pub_type: 临床试验,杂志文章
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更新日期:2011-12-01 00:00:00
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journal_title:Clinical implant dentistry and related research
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更新日期:2017-06-01 00:00:00
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更新日期:2020-06-01 00:00:00
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journal_title:Clinical implant dentistry and related research
pub_type: 杂志文章
doi:10.1111/j.1708-8208.2006.00011.x
更新日期:2006-01-01 00:00:00
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journal_title:Clinical implant dentistry and related research
pub_type: 杂志文章,多中心研究
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journal_title:Clinical implant dentistry and related research
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更新日期:2016-10-01 00:00:00
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journal_title:Clinical implant dentistry and related research
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更新日期:2013-10-01 00:00:00
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journal_title:Clinical implant dentistry and related research
pub_type: 杂志文章
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更新日期:2014-06-01 00:00:00
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journal_title:Clinical implant dentistry and related research
pub_type: 杂志文章
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更新日期:2019-04-01 00:00:00
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journal_title:Clinical implant dentistry and related research
pub_type: 杂志文章,随机对照试验
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journal_title:Clinical implant dentistry and related research
pub_type: 临床试验,杂志文章
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journal_title:Clinical implant dentistry and related research
pub_type: 杂志文章
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更新日期:2019-04-01 00:00:00
abstract:BACKGROUND:Application of adipose-derived stem cells originated from buccal fat pad (BFP) can simplify surgical procedures and diminish clinical risks compared to large autograft harvesting. PURPOSE:This study sought to evaluate and compare the efficacy of buccal fat pad-derived stem cells (BFPSCs) in combination with...
journal_title:Clinical implant dentistry and related research
pub_type: 杂志文章
doi:10.1111/cid.12729
更新日期:2019-04-01 00:00:00
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journal_title:Clinical implant dentistry and related research
pub_type: 杂志文章
doi:10.1111/cid.12587
更新日期:2018-06-01 00:00:00