Abstract:
OBJECTIVES:The aim of this investigation was to evaluate histologically, histometrically, and histomorphometrically the influence of plaque accumulation on the peri-implant hard tissues. MATERIAL AND METHODS:Twelve fully edentulous subjects were selected for this investigation. Four to five standard titanium screw implants were placed interforaminally. Two small custom-made screw implants were incorporated in the region of the former first molar, one in each lower quadrant. One month after abutment connection, plaque control was terminated randomly at one of the custom-made implants and continued at the other implant. The custom-made implants and the surrounding tissue were harvested after different time points of plaque accumulation (7, 21, or 90 days). Thus, according to the plaque control program and implant removal time, there were six groups each with four implants for investigation. After histologic processing of the biopsies, histologic, histometric, and histomorphometric analyses were performed. RESULTS:Four of the 24 implants were unavailable for analysis. One implant was mobile at abutment connection and another implant was mobile 2 weeks after abutment connection; both implants had to be removed. The bone around two implants was destroyed during the removal with the trephine bur; therefore, these two implants could not be evaluated histologically either. No differences in the histologic appearance of the peri-implant bone between the different groups could be observed. Histomorphometrically, the implant surface in contact with mineralized bone as a fraction of the implant surface (measured from the buccal to the lingual implant shoulder) varied between 59% and 73%. The implant surface in contact with mineralized bone from the first bone-to-implant contact buccally to the first bone-to-implant contact lingually varied between 80.6% and 91.5%. The values for the distance from the implant shoulder to the first bone-to-implant contact, i.e. peri-implant bone loss, varied from 1.1 to 2.2 mm. No statistically significant differences could be found between any of the evaluated variables. CONCLUSIONS:This clinical investigation is the first to evaluate the hard tissue reactions to different plaque accumulation periods. Within the limits of this experiment, it can be concluded that the bone reaction toward the different plaque accumulation periods and in the different plaque control/accumulation groups were similar. It can be further concluded that the observed bone loss is rather attributed to the establishment of the biologic width than to plaque accumulation.
journal_name
Clin Oral Implants Resjournal_title
Clinical oral implants researchauthors
Kohal RJ,Bächle M,Emmerich D,Beschnidt SM,Strub JRdoi
10.1034/j.1600-0501.2003.00849.xsubject
Has Abstractpub_date
2003-08-01 00:00:00pages
381-90issue
4eissn
0905-7161issn
1600-0501pii
849journal_volume
14pub_type
临床试验,杂志文章,随机对照试验abstract:OBJECTIVES:Alumina toughening enhances the mechanical properties of zirconia ceramics but the biocompatibility of this material has rarely been addressed. In this study, we examined the osteoblast response to alumina-toughened zirconia (ATZ) with different surface topographies. MATERIAL AND METHODS:Human osteoblasts i...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2009.01735.x
更新日期:2009-11-01 00:00:00
abstract:OBJECTIVES:Peri-implant disease is considered to be an inflammatory disease, but many aspects of its pathogenesis remain unknown. At present, peri-implant disease is considered to be initiated and perpetuated by a small group of predominantly Gram-negative, anaerobic, or micro-aerophilic bacteria that colonize the subg...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2006.01296.x
更新日期:2007-02-01 00:00:00
abstract:OBJECTIVES:The aim of the study was to investigate whether bone marrow aspirates (BMA) and concentrates (BMAC) influence the grafts' stability when added to deproteinized bovine bone mineral (DBBM) within the first 6 months after maxillary sinus augmentation. MATERIAL AND METHODS:26 CT data of 13 patients undergoing b...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/clr.12101
更新日期:2014-02-01 00:00:00
abstract::In the present study, the influence of initial instability on the healing of titanium implants was studied in 9 lop-eared rabbits. Titanium implants (Brånemark System) were inserted in the tibiae, a location with cortical bone only, in such a way that they were either stable (control), rotation-mobile, or totally mobi...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:
更新日期:1996-06-01 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:OBJECTIVES:To compare ear, nose, and throat (ENT) specialists and dentists assessing health or pathology of maxillary sinuses using cone beam computed tomography (CBCT). MATERIAL AND METHODS:Two ENT specialists and two oral surgeons assessed 100 CBCT datasets of healthy patients referred for dental implant placement i...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/clr.13582
更新日期:2020-05-01 00:00:00
abstract:OBJECTIVES:To assess the bleeding on probing (BOP) tendency and periodontal probe penetration when applying various probing forces at implant sites in patients with a high standard of oral hygiene with well-maintained peri-implant tissues. MATERIAL AND METHODS:Seventeen healthy patients with excellent oral hygiene in ...
journal_title:Clinical oral implants research
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1600-0501.2008.01601.x
更新日期:2009-01-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to evaluate the reproducibility and the accuracy of volumetric measurements of specimens imitating localized alveolar ridge defects using an optical three-dimensional (3D) system. MATERIAL AND METHODS:Eight pairs of specimens (five with a cuboid and three with a geometrically compl...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2007.01382.x
更新日期:2007-10-01 00:00:00
abstract:OBJECTIVE:To evaluate the influence of the configuration of the marginal aspect of implants placed immediately into extraction sockets on peri-implant hard tissue adaptation. MATERIAL AND METHODS:In 6 Labrador dogs, endodontic treatments of the mesial roots of 1 M1 were performed and the distal roots were removed. 2 P...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/clr.12262
更新日期:2014-10-01 00:00:00
abstract:OBJECTIVE:To evaluate how bone-level implants maintain crestal bone stability after thickening of thin mucosal tissues with allogenic membrane. MATERIALS AND METHODS:Ninety-seven bone-level implants of 4.1 mm diameter (Institute Straumann AG, Switzerland) were evaluated in 97 patients (28 men and 69 women, mean age 47...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/clr.12301
更新日期:2015-02-01 00:00:00
abstract:OBJECTIVE:Short implants are increasingly used, but there is doubt about their performance being similar to that of regular implants. The aim of this study was to compare the mechanical stability of short implants vs. regular implants placed in the edentulous posterior mandible. MATERIAL AND METHODS:Twenty-three patie...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/clr.12394
更新日期:2015-09-01 00:00:00
abstract:BACKGROUND:Low-temperature synthesized calcium phosphates are produced by mixing calcium phosphate powders in an aqueous solution resulting in a precipitated phase. These compounds can be formulated in several forms (e.g. injectable cements and implantable blocks), and are commonly used as bone substitutes and drug del...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2009.01864.x
更新日期:2010-06-01 00:00:00
abstract::In the preparation of osseointegrated dental implant sites, the use of bone drilling with conventional external irrigation has been shown to be thermally non-injurious to bovine bone, when employed as a model for dental implantology. The use of internal irrigation drilling systems is promoted on the basis of improved ...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1034/j.1600-0501.2002.130309.x
更新日期:2002-06-01 00:00:00
abstract::This study compared osteoblasts proliferation, differentiation, and protein synthesis on new and used titanium (Ti) disks to test the hypothesis that cleaning and resterilization of previously used Ti disks does not alter cell response to a particular surface. Ti disks of varying roughness were prepared by one of five...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1034/j.1600-0501.1996.070104.x
更新日期:1996-03-01 00:00:00
abstract:PURPOSE:The purpose of this prospective study on humans were to evaluate (a) the clinical outcome of alveolar distraction osteogenesis for the correction of vertically deficient edentulous mandibular ridges, (b) the clinical outcome of dental implants placed in the distracted areas, and (c) the quality and quantity of ...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2005.01247.x
更新日期:2006-08-01 00:00:00
abstract:OBJECTIVES:To compare the effect of two surgical techniques, lateral condensation and bone drilling, on changes in temperature of the adjacent low-density bone during implant placement into posterior maxilla and to investigate the influence of the host factors - age, gender, region of implantation, bone density, and th...
journal_title:Clinical oral implants research
pub_type: 杂志文章,随机对照试验
doi:10.1111/clr.12191
更新日期:2014-08-01 00:00:00
abstract:INTRODUCTION:Available literature suggests there is a transient drop in implant stability from approximately week 0 to week 3-4 as a result of peri-implant bone remodeling as it transitions from a primary, mechanical stability to a secondary, biological stability. Research investigating the influence of macro-thread de...
journal_title:Clinical oral implants research
pub_type: 杂志文章,随机对照试验
doi:10.1111/clr.12945
更新日期:2017-10-01 00:00:00
abstract:OBJECTIVE:The aim was to investigate histomorphometrically whether or not implant surface nanotopography improves the bone response under immediate loading simultaneous to sinus grafting. MATERIALS AND METHODS:Dual acid-etched titanium microimplants with/without crystalline surface deposition of calcium phosphate part...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2011.02398.x
更新日期:2013-01-01 00:00:00
abstract::Four different surface modifications were designed. Forty screw-shaped implants were divided into 4 groups, 10 screws in each. Every screw was prepared with 2 different surface topographies. The surface topography was measured with a confocal laser scanning profilometer and the surface roughness was characterized usin...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1034/j.1600-0501.1998.090102.x
更新日期:1998-02-01 00:00:00
abstract:AIM:This study sought to investigate dimensional changes to the alveolar bone following extraction and application of novel devices used for obturation of socket orifice (socket cap) and space maintenance in sockets with facial dehiscence (socket cage). MATERIAL AND METHODS:Six Macaca fascicularis had six teeth each r...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/clr.12521
更新日期:2016-01-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to compare the efficacy of different instruments on biofilm removal from implant supported restorations. MATERIALS AND METHODS:The study was designed as comparative multicenter clinical study including patients proceeding from the Milan, Naples, and Buenos Aires, with a peri-implan...
journal_title:Clinical oral implants research
pub_type: 杂志文章,多中心研究
doi:10.1111/clr.12530
更新日期:2016-02-01 00:00:00
abstract:OBJECTIVE:A precise and scientifically established method for the evaluation of the bone quality/primary stability is the measure of the insertion torque (IT). The aim of this study was a comparison between the IT values and the bone-implant contact percentage (BIC) of human implants retrieved after a 4/8-week healing ...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2008.01599.x
更新日期:2009-08-01 00:00:00
abstract:OBJECTIVES:To systematically review changes in mucosal soft tissue thickness and keratinised mucosa width after soft tissue grafting around dental implants. MATERIALS AND METHODS:An electronic literature search was conducted of the MEDLINE database published between 2009 and 2014. Sequential screenings at the title, a...
journal_title:Clinical oral implants research
pub_type: 杂志文章,评审
doi:10.1111/clr.12606
更新日期:2017-01-01 00:00:00
abstract::Sinus augmentation has been advocated to be a surgical technique with predictable results in peri-implant surgery. Endoscopic surgery of the maxillary sinus so far has been used as diagnostic procedure. In this paper, the use of endoscopy is described as a low invasive adjunctive technique in sinus floor augmentation....
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1034/j.1600-0501.1997.080612.x
更新日期:1997-12-01 00:00:00
abstract::The aim of this study was to investigate whether a new connective tissue attachment can occur on a surface of hydroxyapatite (HA) when periodontal ligament (PDL)-derived cells with the ability to form new connective tissue attachment are allowed to populate the surface of HA. Six maxillary canines from 3 cats were use...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1034/j.1600-0501.1993.040303.x
更新日期:1993-09-01 00:00:00
abstract::The aim of the present study was to compare three different systems for preparing platelet concentrates: two commercially available bed-side techniques (Curasan system and PCCS) and a procedure used routinely in transfusion medicine. Platelet concentrates were prepared from venous blood of 12 healthy male volunteers u...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1034/j.1600-0501.2002.130512.x
更新日期:2002-10-01 00:00:00
abstract:AIM:To spectrophotometrically and visually test whether the peri-implant mucosal color differs from the color of the natural gingiva. MATERIAL AND METHODS:Forty single implants in the incisor and premolar region of 40 patients were assessed 3-7 years after implant placement. The differences of the color components lig...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/clr.12781
更新日期:2017-02-01 00:00:00
abstract:OBJECTIVE:Estimate changes in augmentation height and volume after lateral guided bone regeneration (GBR) augmentation with different ratios of deproteinized bovine bone mineral (DBBM) and particulate autogenous bone (PAB) and autogenous bone block (ABB), at different time points. MATERIAL AND METHODS:Twenty-four mini...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/clr.13687
更新日期:2020-11-20 00:00:00
abstract:OBJECTIVE:The influence of progressively high concentrations of platelet-rich plasma (PRP) on human osteoblast hFOB1.19 proliferation was evaluated. MATERIAL AND METHODS:The PRP was obtained from a human source. Two experiments were conducted. In the first one, PRP was diluted to 50%, 25%, 12.5% and 6.125% (v/v) with ...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1111/j.1600-0501.2005.01145.x
更新日期:2005-08-01 00:00:00
abstract::The purpose of the present in vitro investigation was to measure temperature changes at the implant surface when using pulsed CO2 laser in a simulated implant surface decontamination protocol. Six threaded titanium implants were placed in a fresh resected pig mandible. A 4 x 4 mm defect was created buccally to each im...
journal_title:Clinical oral implants research
pub_type: 杂志文章
doi:10.1034/j.1600-0501.1999.100107.x
更新日期:1999-02-01 00:00:00