Abstract:
STATEMENT OF PROBLEM:Despite careful attention to waxing, investing, and casting, marginal discrepancies are inevitable. Vertical and horizontal discrepancies can result in crestal bone resorption, peri-implantitis, and loss of osseointegration. PURPOSE:The aim of this study was to evaluate marginal gap and overhang in 3 casting techniques for implant framework fabrication. MATERIALS AND METHODS:A total of 24 frameworks, 8 each with the Burn-out Cap (ITI; Straumann) (group BC), with Impression Cap (ITI; Straumann) (group IC), and with conventional wax-up technique (group WX) were fabricated. All specimens were waxed on the analog abutments and cast with Type IV gold alloy. All castings were fixed on the analog abutments with cyanoacrylate and embedded in acrylic resin. Specimens were sectioned and prepared for scanning electron microscope evaluation. Frameworks were analyzed for vertical and horizontal discrepancies with x200 magnification (scanning electron microscopy). Data were analyzed statistically by multivariate analysis and the post hoc tests (alpha = 0.05). RESULTS:The vertical discrepancy measurements for the 3 groups showed mean values of 53.74 +/- 11.0 mum, 63.6 +/- 13.2 mum, and 50.1 +/- 17.3 mum, respectively. The interfacial gap differences were not statistically significant in all groups (P > 0.05). Waxing the frameworks with impression caps significantly increased the horizontal discrepancy at the interfaces (P < 0.001). CONCLUSIONS:Within the limitations of this experiment, it was demonstrated that the vertical discrepancy of the frameworks made with the 3 techniques were comparable in lack of accuracy with each other. Although conventional waxing produced the least horizontal discrepancy, the difference with burn-out cap group was not statistically different.
journal_name
Implant Dentjournal_title
Implant dentistryauthors
Siadat H,Alikhasi M,Mirfazaelian A,Zade MMdoi
10.1097/ID.0b013e318183621dsubject
Has Abstractpub_date
2008-09-01 00:00:00pages
299-308issue
3eissn
1056-6163issn
1538-2982pii
00008505-200809000-00011journal_volume
17pub_type
杂志文章abstract:PURPOSE:This research sought first to evaluate the differences in the finite element method (FEM) analysis of 4 different implant surfaces, including internal and external connections of the same manufacturer with additional modifications. METHODS:In this study, 4 dental implants from the same manufacturer were compar...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e318292625f
更新日期:2013-06-01 00:00:00
abstract:PURPOSE:This study was conducted to investigate one-piece narrow-diameter implants installed in maxillary lateral and mandibular incisor sites using immediate nonfunctional loading. MATERIALS AND METHODS:In this 10-year clinical trial study, 42 narrow-diameter (3.0-mm) one-piece implants for 35 patients were inserted....
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000861
更新日期:2019-06-01 00:00:00
abstract::Maxillary and mandibular traumatic injuries are inevitable in our society. Dental implants can be considered for the replacement of teeth lost as a result of trauma, even in complicated cases where associated injuries, such as jaw fractures and bone loss, have occurred. Reimbursement for dental services by insurance c...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/00008505-199309000-00009
更新日期:1993-10-01 00:00:00
abstract::Successful implant dentistry is based on adequate training, proper selection of patients, careful surgery, preplanned restorations, and postoperative and supportive care. Although implant therapy is highly successful and predictable, it is not without possible early and/or late complications. The aim of this article i...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/01.id.0000127518.60701.a1
更新日期:2004-06-01 00:00:00
abstract:PURPOSE:Coating endosseous dental implants with growth factors such as bone morphogenetic proteins (BMPs) may be one way to accelerate and/or enhance the quality of osseointegration. The purpose of this study was to investigate in the murine muscle pouch model whether sintered porous-surfaced titanium alloy implants co...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/01.id.0000226754.71828.6b
更新日期:2006-09-01 00:00:00
abstract:PURPOSE:The aim of this study was to clinically, radiologically, and histologically evaluate a sinus augmentation technique using a resorbable collagen sponge to maintain space between the Schneiderian membrane and the residual crestal bone. MATERIALS AND METHODS:Patients with partially edentulous maxillae were clinic...
journal_title:Implant dentistry
pub_type: 临床试验,杂志文章
doi:10.1097/ID.0000000000000631
更新日期:2017-10-01 00:00:00
abstract:OBJECTIVE:This study aims at applying cDNA microarray analysis in vitro for establishing and comparing the osteogenic properties of dental implants with different surface characteristics. MATERIALS AND METHODS:Saos-2 osteoblasts were cultured in bottom-cone tubes in presence of 5 different dental implants with various...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e318225f22b
更新日期:2011-08-01 00:00:00
abstract::We report a case of a postextraction maxillary buccal dehiscence grafted with calcium sulfate to insert a dental implant. The clinical results were supported by histologic analysis of two specimens collected in the healed socket to better understand the biologic effects of calcium sulfate. A 42-year-old white female p...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/01.id.0000156384.05026.a6
更新日期:2005-03-01 00:00:00
abstract:OBJECTIVES:The main goal of this study was to compare the stress distribution of mandibular overdentures (OVD) with different numbers of supporting implants and single versus splinted attachment types. MATERIALS AND METHODS:Four different biting situations were simulated for the 2-, 3-, and 4-implant retentive anchor ...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e31827774ee
更新日期:2013-02-01 00:00:00
abstract::The need for major surgery involving bone and skin grafting procedures in the treatment of severe alveolar atrophy has, for many patients, been obviated by the advent of reliable endosseous implant systems. However, some patients, usually for medical, psychological, or financial reasons are unsuitable for endosseous i...
journal_title:Implant dentistry
pub_type: 杂志文章,评审
doi:10.1097/00008505-199200130-00002
更新日期:1992-10-01 00:00:00
abstract:STATEMENT OF PROBLEM:The transition from implant to abutment is solid in 1-piece (1P) and broken in 2-piece (2P) implant designs. This difference may affect occlusal load distribution and marginal bone response. PURPOSE:To determine whether 1P and 2P implants with equivalent geometries exhibited stresses and strains d...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e31823fce22
更新日期:2012-02-01 00:00:00
abstract:PURPOSE:To analyze the accuracy of impressions in relation to implant angulation and type of impression coping. MATERIALS AND METHODS:Three metal master models with 2 implants of 3 different angulations (parallel, mesiodistal, and buccolingual) were fabricated. Nine groups of experimental models were fabricated to dup...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000336
更新日期:2015-12-01 00:00:00
abstract:PURPOSE:To compare the effectiveness of 2 different techniques to lift the maxillary sinus floor through a crestal approach on fresh human cadaver heads: the Intralift technique using Piezosurgery and the Summers technique using osteotomy. MATERIALS AND METHODS:Two different protocols were simulated on 11 fresh human ...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000143
更新日期:2014-10-01 00:00:00
abstract:PURPOSE:The aim of this multicenter retrospective clinical study was to evaluate the survival rate of implants placed in the posterior maxilla with a residual bone height of <5 mm. MATERIALS AND METHODS:One hundred seventeen patients, recruited from 6 different centers, had 134 implants placed below the maxillary sinu...
journal_title:Implant dentistry
pub_type: 杂志文章,多中心研究
doi:10.1097/ID.0b013e3182342052
更新日期:2011-12-01 00:00:00
abstract:PURPOSE:The aim of this work was to compare histologically bone biopsies obtained during dental implant placement in atrophic jaws reconstructed with fresh-frozen bone (FFB) or autologous bone blocks. MATERIALS AND METHODS:Twenty partially or totally edentulous patients were treated either with iliac crest FFB grafts ...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000451
更新日期:2016-12-01 00:00:00
abstract::Monocytes are progenitor cells that lead the inflammatory cascade reaction responsible for guiding revascularization and regeneration of tissue at injury sites. They do this by secreting inductive cytokines responsible for endothelial cell migration. When released into the peripheral blood, monocytes enter tissues and...
journal_title:Implant dentistry
pub_type: 杂志文章,评审
doi:10.1097/ID.0b013e31823fcf85
更新日期:2012-02-01 00:00:00
abstract::This clinical report presents a restorative option for the partially edentulous maxilla utilizing an implant-retained removable partial denture without retentive clasps. This approach required (1) fewer patient visits and laboratory procedures; (2) the use of minimal number of implants; (3) lower financial obligations...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/00008505-200110000-00012
更新日期:2001-01-01 00:00:00
abstract::Today, the sinus floor elevation procedure is not only being used on a routine basis, but clinicians are reporting high success rates. The sinus floor graft has become an important option in the treatment of the edentulous posterior maxilla, where vertical bone height is less than ideal. A review of maxillary sinus fl...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/01.id.0000220550.27164.74
更新日期:2006-06-01 00:00:00
abstract:OBJECTIVES:The objective of this clinical study was to evaluate the prosthetic complications of patients with 2 to 4 implants splinted with a round bar or with 2 to 4 unsplinted implants with ball attachments during the follow-up period. METHODS:A total of 26 patients were included in this study. Patients were randoml...
journal_title:Implant dentistry
pub_type: 杂志文章,随机对照试验
doi:10.1097/ID.0b013e318166d88b
更新日期:2008-03-01 00:00:00
abstract:PURPOSE:To compare the long-term marginal implant bone loss, survival, and radiographic success of single dental implants among current, past smokers, and nonsmokers. PARTICIPANTS AND METHODS:The study was based on a consecutive cohort of patients who received single implants between 2 adjacent natural teeth. Only imp...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e31818c4a24
更新日期:2008-12-01 00:00:00
abstract:PURPOSE:To evaluate the effect of various implant-level impression techniques on the accuracy of definitive casts for a multiple internal connection implant system with different implant angulations and subgingival depths. MATERIAL AND METHODS:Six tapered Screw-Vent implants were placed in a reference model with diffe...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e3182920dc5
更新日期:2013-06-01 00:00:00
abstract:OBJECTIVE:We designed to determine the variables that influence the adoption rate of implant technology amongst Canadian dentists. METHODS AND MATERIAL:In this cross-sectional study, an anonymous survey questionnaire was sent to all licensed Canadian dentists, both general practitioners and specialists. A 3-part quest...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e318200315e
更新日期:2011-02-01 00:00:00
abstract:INTRODUCTION:The aim of this study was to evaluate retrospectively the 3-year outcome of implants placed in augmented maxillary sinuses with minimal residual alveolar bone heights (≤3 mm). MATERIALS AND METHOD:A total of 28 sinus floors were augmented with xenograft, and 58 implants were placed. The outcome measures w...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000360
更新日期:2016-04-01 00:00:00
abstract:PURPOSE:This study compared the load transfer characteristics of a complete-arch restoration supported by 4 implants, with external and internal implant-abutment connections. Three loading positions were applied to the prostheses. MATERIALS AND METHODS:Epoxy resin models were used to simulate bone. Two types of implan...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000063
更新日期:2014-04-01 00:00:00
abstract:BACKGROUND:: A comparison of freeze-dried cancellous and cortical particulate bone allograft was made using a non-human primate model. METHODS AND MATERIALS:: Microparticulate bone allograft (90-300 μm size) made from either cortical or cancellous bone was used to pack standard bone defects in the lower extremities of...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e3181ad18d6
更新日期:2009-10-01 00:00:00
abstract:PURPOSE:Bone augmentation is frequently used to create sufficient bone volume for ideal implant placement. Severely resorbed ridges require extensive bone augmentation in the form of block allografts. A 3-dimensional graft technique has been developed to augment atrophic areas. This technique involves modifying the gra...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e31826f7a67
更新日期:2012-12-01 00:00:00
abstract:PURPOSE:The purpose of this pilot study is to propose a technique, the split-finger approach, to preserve/promote papillae formation. MATERIALS AND METHODS:Twenty-one patients with 39 implants consecutively placed in the maxillary anterior region were evaluated at 6 months to 1 year after prosthodontic restoration. Th...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/01.id.0000116368.76369.78
更新日期:2004-03-01 00:00:00
abstract:BACKGROUND:The aim was to identify and evaluate those surgical protocols reporting on positive clinical outcomes for treating peri-implantitis with 12 or more months of follow-up. Method of surface decontamination (SDC) was evaluated for any correlation with outcomes. RESULTS:A literature search was performed of all a...
journal_title:Implant dentistry
pub_type: 杂志文章,评审
doi:10.1097/ID.0000000000000428
更新日期:2016-06-01 00:00:00
abstract:PURPOSE:The purpose of the present study was to evaluate healing outcomes after collagen plug insertion in extraction-related defects. MATERIALS AND METHODS:The third and fourth mandibular premolars in canines were extracted, and the septal bone was removed. The following treatments were performed for the defects: por...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000696
更新日期:2017-12-01 00:00:00
abstract::The ability to generate 3-dimensional volumetric images of the maxillofacial area has allowed surgeons to evaluate anatomy before surgery and plan for the placement of implants in ideal positions. However, the ability to transfer that information to surgical reality has been the most challenging part of implant dentis...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/01.id.0000202637.61180.2b
更新日期:2006-03-01 00:00:00