Abstract:
OBJECTIVES:To evaluate the reliability and failure modes of regular and horizontal mismatched platforms for implant-abutment connection varying the implant diameter. MATERIAL AND METHODS:Regular (REG, n = 21, 4.0-mm-diameter implant) and horizontal mismatched (HM, n = 21, 4.6-mm-diameter implant) platform Ti-6Al-4V implants were restored with proprietary identical Ti-6Al-4V abutments and metal crowns (cobalt-chrome, Wirobond 280, BEGO, Bremen, Germany) cemented. Mechanical testing comprised step-stress accelerated-life testing, where crowns were distributed in three loading profiles for fatigue in water, producing timely and clinically relevant fractures. The probability of failure vs. cycles (95% two-sided confidence intervals) was calculated and plotted using a powerlaw relationship for damage accumulation, Weibull modulus (95% two-sided confidence intervals) and then the reliability for a mission of 50,000 cycles at 125 N load (95% two-sided confidence interval) were calculated. Fractography was performed in the scanning electron microscope. RESULTS:The β-value for group REG (β = 1.37) indicated that fatigue was a factor accelerating the failure, whereas load alone dictated the failure for group HM (β = 0.71). The Weibull parameter contour plot showed no significantly different Weibull modulus for REG (10.24) compared to HM (10.20) and characteristic strength of 162.6 and 166.8 N, respectively (P > 0.91). The calculated reliability for a mission of 50,000 cycles at 125 N load was not significantly different (0.71 for REG and 0.73 for HM). Abutment screw failure was the chief failure mode. CONCLUSIONS:Reliability was not significantly different between groups and failure modes were similar.
journal_name
Clin Oral Implants Resjournal_title
Clinical oral implants researchauthors
Freitas Júnior AC,Bonfante EA,Silva NR,Marotta L,Coelho PGdoi
10.1111/j.1600-0501.2011.02257.xsubject
Has Abstractpub_date
2012-09-01 00:00:00pages
1123-6issue
9eissn
0905-7161issn
1600-0501journal_volume
23pub_type
杂志文章abstract:OBJECTIVE:Crestal bone loss around dental implants is a criterion for success as this could prevent loss of implant and superstructure. The macrogeometry of the implant could influence bone remodelling when the implant-abutment connection is placed at crestal bone level or above. The aim of this study was to evaluate c...
journal_title:Clinical oral implants research
pub_type: 杂志文章,随机对照试验
doi:10.1111/clr.12581
更新日期:2016-12-01 00:00:00
abstract:OBJECTIVES:The aims of this study were (i) to evaluate the efficacy of ridge preservation and repair procedures involving the application of SocketKAP(™) and SocketKAGE(™) devices following tooth removal and (ii) to evaluate alveolar bone volumetric changes at 6 months post-extraction in intact sockets or those with fa...
journal_title:Clinical oral implants research
pub_type: 杂志文章,随机对照试验
doi:10.1111/clr.12687
更新日期:2016-06-01 00:00:00
abstract::Although a two-stage procedure with symphyseal oral implants can lead to a long-term (15 years) 99% cumulative survival rate, a one-stage approach with immediate loading via prefabricated elements seems to offer a short-term acceptable outcome with significantly lower costs. A series of 50 consecutive patients, not el...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2004.01069.x
更新日期:2004-06-01 00:00:00
abstract:OBJECTIVES:Studies showing that osteoblasts exhibit a more differentiated phenotype on rough titanium (Ti) surfaces and osteoclast-resorbed bone surfaces used materials characterized by average peak to valley distance (Ra). Other surface features impacting the cells include distance between peaks, curvature of the vall...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2005.01195.x
更新日期:2006-06-01 00:00:00
abstract:INTRODUCTION:Despite the high success rates of endosseous oral implants, restrictions have been advocated to their placement with regard to the bone available in height and volume. The use of short or nonstandard-diameter implants could be one way to overcome this limitation. MATERIAL AND METHODS:In order to explore t...
journal_title:Clinical oral implants research
pub_type: 杂志文章,评审
doi:10.1111/j.1600-0501.2006.01349.x
更新日期:2006-10-01 00:00:00
abstract:OBJECTIVES:To assess the relationship between smooth and roughened implant surfaces of straight and narrow configurations with respect to microdamage of the bone surface during placement of dental implants. MATERIALS AND METHODS:Straight and tapered, rough and smooth surface Nobel Biocare implants were placed into she...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2010.02024.x
更新日期:2011-06-01 00:00:00
abstract:OBJECTIVES:The aim of the present publication was to report on the EAO Workshop group-4 discussions and consensus statements on the five reviews previously prepared. These reviews provided the scientific evidence on the effect of crown-to-implant ratio, on reconstructions with cantilevers in fully and partially edentul...
journal_title:Clinical oral implants research
pub_type: 共识发展会议,杂志文章
doi:10.1111/clr.13284
更新日期:2018-10-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to quantify the effect of adapted preparation on the insertion torque of self-tapping implants in cancellous bone. In adapted preparation, bone condensation - and thus, insertion torque - is controlled by changing the diameter of the drilling. MATERIAL AND METHODS:After preparation ...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2006.01280.x
更新日期:2007-02-01 00:00:00
abstract::The principle of guided tissue regeneration was applied in an attempt to generate bone to cover a subperiosteal implant. Titanium frame works, casted on individual impressions of the anterior surface of the tibia of 4 Copenhagen White rabbits, were stabilized to the tibia by microscrews, and half of them were covered ...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1034/j.1600-0501.1995.060303.x
更新日期:1995-09-01 00:00:00
abstract:OBJECTIVES:To determine the difference in light reflection of oral mucosa covering titanium (Ti) or zirconia (ZrO(2)) abutments as it relates to the thickness of the covering mucosa. MATERIAL AND METHODS:Fifteen anterior implants (Astra Osseo speed(®)) in 11 patients were fitted with a Ti or a ZrO(2) abutment (cross-o...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2010.02082.x
更新日期:2011-10-01 00:00:00
abstract:OBJECTIVES:An animal study was carried out to investigate the influence of platelet-rich plasma (PRP) on the regeneration of bony defects. MATERIAL AND METHODS:Critical-size defects in the forehead region of a mini-pig were filled with randomly distributed combinations of autogenous bone, tricalcium-phosphate granules...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2004.00980.x
更新日期:2004-04-01 00:00:00
abstract:AIM:The aim of this biomechanical study was to assess the influence of self-tapping blades in terms of primary implant stability between implants with self-tapping blades and implants without self-tapping blades using five different analytic methods, especially in medium-density bone. MATERIALS AND METHODS:Two differe...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2010.02089.x
更新日期:2011-10-01 00:00:00
abstract::The aim of this study was to investigate the effect of calcium phosphate coating crystallinity and composition on the proliferation and differentiation of rat bone marrow (RBM) cells. Grit-blasted titanium substrates were provided with thin sputter-coated calcium phosphate (Ca-P) films of different composition. The Ca...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1034/j.1600-0501.2003.00886.x
更新日期:2003-08-01 00:00:00
abstract::The effect of bioactive glass (BG) and calcium carbonate (CC) granules on bone formation around titanium and BG implants projecting into the medullary space of rabbit tibia was studied. The bone marrow tissue was removed and the medullary space was filled either with BG or CC (Biocoral) granules (phi 630-800 microns)....
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1034/j.1600-0501.1997.080204.x
更新日期:1997-04-01 00:00:00
abstract:BACKGROUND:Alumina-toughened zirconia (ATZ) is a possible alternative material to titanium for oral implants. No data are available on the fracture strength of ATZ oral implants. PURPOSE:The purpose of this study was to examine one-piece implants made of ATZ ceramic under artificial loading conditions and to compare t...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2010.01954.x
更新日期:2010-12-01 00:00:00
abstract:INTRODUCTION:Dental implants have traditionally been made from titanium or its alloys, but recently full-ceramic implants have been developed with comparable osseointegration properties and functional strength properties to titanium. These ceramic implants may have advantages in certain patients and situations, for exa...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/clr.12598
更新日期:2016-12-01 00:00:00
abstract:OBJECTIVES:To evaluate implant survival, peri-implant marginal bone loss, technical, and biological complications as well as aesthetic outcomes of zirconia implants in clinical studies. MATERIAL AND METHODS:Electronic (Medline, Embase) and hand searches were performed to identify clinical studies published between Jan...
journal_title:Clinical oral implants research
pub_type: 杂志文章,meta分析
doi:10.1111/clr.13352
更新日期:2018-10-01 00:00:00
abstract::The aim of this study is to evaluate a surgical protocol for vertical ridge augmentation in the maxilla and mandible using autogenous onlay bone graft associated with a titanium mesh. A group of 18 partially edentulous patients, presenting the need for vertical bone augmentation of at least 4 mm, were treated before i...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2004.00998.x
更新日期:2004-02-01 00:00:00
abstract:AIM:To review the literature on the prevalence and incidence of peri-implantitis. METHODS:Out of 322 potentially relevant publications we identified 29 articles concerning 23 studies, with information on the presence of signs of peri-implantitis in populations of at least 20 cases. RESULTS AND CONCLUSIONS:All studies...
journal_title:Clinical oral implants research
pub_type: 杂志文章,评审
doi:10.1111/j.1600-0501.2012.02541.x
更新日期:2012-10-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to build, around several types of input data, a decision analysis model for dental extraction strategy in periodontitis patients. MATERIALS AND METHODS:The decision analysis was based on the following scenario: a fictitious adult chronic periodontitis patient with no chief compl...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2009.01850.x
更新日期:2010-01-01 00:00:00
abstract:OBJECTIVE:The purpose of the present prospective follow-up study was to evaluate the long-term influence of the peri-implant keratinized mucosa (KM) on marginal bone level (MBL), peri-implant tissues health, and brushing discomfort. MATERIAL AND METHODS:Eighty patients were initially recruited during their maintenance...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/clr.13381
更新日期:2018-12-01 00:00:00
abstract:AIM:The aim of this prospective, randomized, controlled multicenter study was to determine the 3-year efficacy and stability of the soft and hard tissues at implants with a different geometry that were placed in fresh extraction sockets. MATERIAL AND METHODS:Implants with two different configurations, cylindrical (Gro...
journal_title:Clinical oral implants research
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1111/clr.12140
更新日期:2014-03-01 00:00:00
abstract:OBJECTIVES:The aim of the present systematic review was to analyze the survival and complication rates of zirconia-based and metal-ceramic implant-supported single crowns (SCs). MATERIALS AND METHODS:An electronic MEDLINE search complemented by manual searching was conducted to identify randomized controlled clinical ...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/clr.13306
更新日期:2018-10-01 00:00:00
abstract:OBJECTIVES:In regenerative medicine, surface engineering of bioinert synthetic materials is often required in order to introduce bioactive species that can promote cell adhesion, proliferation, viability and enhanced ECM-secretion functions. The aim of this work is to study cell interaction with alumina-modified surfac...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2008.01642.x
更新日期:2009-03-01 00:00:00
abstract:OBJECTIVES:To analyze clinical, esthetic, radiographic, and prosthetic outcomes of implants and implant-supported reconstructions using two types of dental implants with non-matching implant abutment junctions. MATERIALS AND METHODS:A total of 64 patients in need of dental implant therapy with fixed reconstructions we...
journal_title:Clinical oral implants research
pub_type: 杂志文章,随机对照试验
doi:10.1111/clr.12721
更新日期:2016-09-01 00:00:00
abstract:AIM OF THE STUDY:To present the results of a prospective study on the management of infectious complications following maxillary sinus floor elevation procedures with a combined endoscopic (FESS) and intra-oral approach. MATERIALS AND METHODS:From 2005 to 2009, twenty consecutive patients were diagnosed for sinusal ch...
journal_title:Clinical oral implants research
pub_type: 杂志文章,多中心研究
doi:10.1111/j.1600-0501.2012.02440.x
更新日期:2013-06-01 00:00:00
abstract:PURPOSE:The aim of this study was to evaluate the success rate of chemically modified and conventional sandblasted acid-etched surface (SLA) titanium implants in irradiated oral squamous cell carcinoma patients. MATERIAL AND METHODS:Twenty patients with a mean age of 61.1 years were treated with dental implants after ...
journal_title:Clinical oral implants research
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1600-0501.2010.02050.x
更新日期:2011-05-01 00:00:00
abstract:OBJECTIVE:To evaluate osseointegration in rabbit tibiae and to investigate surface characteristics of novel zirconia implants made by powder injection molding (PIM) technique, using molds with and without roughened inner surfaces. MATERIAL AND METHODS:A total of 20 rabbits received three types of external hex implants...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2012.02468.x
更新日期:2013-05-01 00:00:00
abstract:OBJECTIVES:To evaluate a possible relationship between gingival biotypes and gingival thickness, papilla height and gingival width. MATERIAL AND METHODS:Thirty-six adult subjects were stratified by their gingival biotype (GB), as defined by transparency of a periodontal probe through the buccal gingival margin, into "...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/clr.12356
更新日期:2015-08-01 00:00:00
abstract::The aim of the present study was to evaluate the effect of augmenting the maxillary alveolar ridge and the lateral aspect of the mandible with onlay autogeneic cortico-cancellous bone grafts that were covered with e-PTFE membranes. The experiment was carried out in 51 rats. In 15 rats, the edentulous maxillary jaw bet...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1034/j.1600-0501.2002.130210.x
更新日期:2002-04-01 00:00:00