Abstract:
OBJECTIVES:To investigate whether a different implant geometry with the same potential contact surface area (PCSA) affects the principal stress and strains in bone. MATERIAL AND METHODS:Three-dimensional finite-element models were created with a single endosseous implant embedded in bone. The irregular (IR) dental root-analog implant and regular (R) cylindrical implant with the same PCSA 350 mm were modeled, keeping the size of the thinnest implant wall 0.8 mm, and the thinnest bone wall 1 mm. The regular or irregular abutments were either 4.5 mm lower than the platform of the implants or 5 mm higher than the platform of the implants, both with the taper 1.44°. A 100 N vertical or 100 N vertical/50 N horizontal occlusal loading was applied. The biomechanical behaviors of periimplant bone were recorded. RESULTS:The IR implant design experienced lower periimplant stress and strain under oblique loading than that of R implant design. In the IR implant design, comparable stress in bone, implant, and abutment were found under 100 N vertical loading or 100 N vertical/50 N horizontal loading. In the R implant design, much higher stress in bone, implant, and abutment were found under 100 N vertical/50 N horizontal loading than that under 100 N vertical loading. CONCLUSION:Irregular dental root-analog implant is a biomechanically favorable design principle for decreasing periimplant stress and strain under oblique loading.
journal_name
Implant Dentjournal_title
Implant dentistryauthors
He L,Zhang J,Li X,Hu H,Lu S,Tang Zdoi
10.1097/ID.0000000000000662subject
Has Abstractpub_date
2017-10-01 00:00:00pages
744-750issue
5eissn
1056-6163issn
1538-2982pii
00008505-201710000-00016journal_volume
26pub_type
杂志文章abstract:PURPOSE:The purpose of this study was to compare the bone regenerative capability of using unsintered hydroxyapatite/poly-L-lactic acid (uHA/PLLA) mesh and titanium mesh. MATERIALS AND METHODS:Adult male white rabbits (n = 24) were divided into 2 groups. After incising along the mandible, 3 × 5 mm bone defects were ma...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e31828336be
更新日期:2013-06-01 00:00:00
abstract::The aim of this study is to present the clinical data from the use of implants that were placed and restored in four independent private dental offices. In part I, the survival rate was calculated and the failure causes were associated with some potential risk factors. In part II, the surgical and prosthetic complicat...
journal_title:Implant dentistry
pub_type: 杂志文章,多中心研究
doi:10.1097/01.id.0000148564.88384.de
更新日期:2004-12-01 00:00:00
abstract::Le Fort I osteotomy is a versatile procedure in oral and maxillofacial surgery for the correction of dysgnathias as well as for an easy approach to the surgical site in neurosurgery; however, it is rarely performed for a vertical advancement of the maxilla. This paper presents the successful use of the synthetic pure-...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/01.id.0000061084.09518.3e
更新日期:2003-01-01 00:00:00
abstract:OBJECTIVE:To histologically evaluate hard and soft tissues adaptation at screw-shaped devices installed at recipient sites in the distal segments of the alveolar edentulous ridge prepared with a buccal bone width of 1 or 2 mm. MATERIAL AND METHODS:Sixteen volunteers received 2 nonsubmerged titanium implants each; afte...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000772
更新日期:2018-08-01 00:00:00
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::Dental care of the aging patient presents a number of problems not encountered in younger patients. Most of these problems result from tissue changes that occur during aging. Dental implants and implant-retained and/or implant-supported prostheses are viable treatment options for older patients. The majority of elderl...
journal_title:Implant dentistry
pub_type: 杂志文章,评审
doi:10.1097/00008505-199700630-00002
更新日期:1997-10-01 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::Passive-fitting mesostructures and superstructures are required to be superimposed on osseointegrated endosseous implants. The tightening of an inaccurate framework to the abutments will transmit stresses to the bone-implant interface. Precision, until now, has been inconsistent and unpredictable with conventional met...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/00008505-200009010-00016
更新日期:2000-01-01 00:00:00
abstract::Surgical placement of dental implants requires an osteotomy. There is suspicion that osseous drilling may generate detrimental heat in the site that may cause localized bone necrosis and, subsequently, failure of the dental implant to osseointegrate. Cooling aqueous irrigation has been advocated to prevent such overhe...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e3181dc9852
更新日期:2010-06-01 00:00:00
abstract:OBJECTIVE:This study aimed to perform a systematic review of the effectiveness of nonsurgical treatment associated with different adjuvant therapies on periimplantitis. MATERIALS AND METHODS:Different individuals, following a research process, performed a network research of controlled and randomized controlled clinic...
journal_title:Implant dentistry
pub_type: 杂志文章,评审
doi:10.1097/ID.0000000000000469
更新日期:2017-02-01 00:00:00
abstract:PURPOSE:To evaluate, in vitro, the leakage observed in internal hexagon and Morse taper implant-abutment connections. MATERIALS:Ten specimens with internal hexagon and 10 with Cone Morse connection were used. The inner parts of 5 implants, per group, were inoculated with Pseudomonas aeruginosa (PS) suspension and 5 im...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e31825cd472
更新日期:2012-08-01 00:00:00
abstract:PURPOSE AND OBJECTIVE:The aim of this in vitro study was to investigate the ability of epithelial cells to attach to or proliferate on various mechanical or chemical surface treatments of an implant provisional material. MATERIALS AND METHODS:Polyethyl methacrylate discs 10 mm in diameter and ∼0.2 to 0.75 mm in width ...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000538
更新日期:2017-02-01 00:00:00
abstract::Primary stability of dental implants is mandatory for their osseointegration. A method is described that allows objective measurements of implant displacement in bone sites during lateral loading. Ten samples of bovine bone (2 cm x 2 cm) with bone type II, III, and IV according to Lekholm and Zarb were used for the ex...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/01.id.0000116457.03989.01
更新日期:2004-03-01 00:00:00
abstract::A case report is presented describing the laboratory fabrication and clinical use of an innovative template. This template was designed to function as a radiographic implant positioning guide, accurate bone sounding guide, and surgical guide. This appliance is intended to serve additional roles as an aid in flap refle...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/00008505-199807020-00005
更新日期:1998-01-01 00:00:00
abstract::Sinus augmentation with a lateral window technique and delayed implant placement are the traditional treatment schedules when the residual alveolar bone height in atrophic posterior maxilla is less than 5 mm. This article presents a transcrestal window approach (TWA) to replace a missing first molar in an atrophic pos...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000503
更新日期:2016-12-01 00:00:00
abstract:BACKGROUND:For fixed prostheses, retention is one of the most important factors for clinical success. It is unknown whether grooves that increase surface area of implant abutment while retaining the diameter and wall height provide greater uniaxial retention force. The purpose of this study was to determine the retenti...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e318225f68e
更新日期:2011-10-01 00:00:00
abstract:PURPOSE:To compare the long-term clinical and radiographic outcomes between immediate loading (IL) and conventional loading of implants placed immediately in fresh extraction sockets. MATERIALS AND METHODS:Demographic data, implant details, and periapical radiographs of patients were collected. The long-term marginal ...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000635
更新日期:2017-12-01 00:00:00
abstract:PURPOSE:The aim of this study was to evaluate the hard and soft tissue parameters around implants supporting overdentures and the possible influence of increased periimplant bone density (IPBD) on implant success. MATERIALS AND METHODS:A total of 44 dental implants placed in the mandible of 12 patients were included i...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000032
更新日期:2014-02-01 00:00:00
abstract:BACKGROUND:Calcium sulfate is a simple, biocompatible material with a very long, safe clinical history in several different fields of medicine. It is a rapidly resorbing material that leaves behind calcium phosphate lattice, which promotes bone regeneration. OBJECTIVE:The aim of this study was a histological and ultra...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e3180587ad8
更新日期:2007-06-01 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:CASE REPORT:A 46-year-old man with severe hemophilia A, stage A2 HIV infection and chronic hepatitis C genotype 1A, for whom the treatment plan included implant-supported prostheses in 2 mandibular edentulous sections. The protocol followed included factor VIII replacement concentrate and oral antifibrinolytic therapy....
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000145
更新日期:2014-10-01 00:00:00
abstract:AIM:Microcomputed tomography (micro-CT) has become a highly accurate and nonintrusive method for analysis of bone. This study aims to determine the microstructural characteristics of the bone formed in grafted extraction sockets. METHODS:This prospective study comprised 10 patients. Cancellous porous bovine bone (CPBB...
journal_title:Implant dentistry
pub_type: 临床试验,杂志文章
doi:10.1097/ID.0b013e31829afa44
更新日期:2013-08-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to evaluate the peri-implant bone tissue level on postextractive resorbable calcium phosphate coated single implants placed in premaxillary sites grafted with autologous bone, anorganic bovine bone (ABB), platelet-rich plasma (PRP), and keratinized epithelial connective graft ov...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000790
更新日期:2018-08-01 00:00:00
abstract::Today, prognathism in the partially or completely edentulous jaw can be treated with endosteal implants and fixed prostheses. The preferred procedure uses basal osseointegration. If the distribution of available bone is favorable, the prosthodontic suprastructures can be loaded early, taking the various phases of bone...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/00008505-199903000-00005
更新日期:1999-01-01 00:00:00
abstract::A consensus conference to develop curriculum guidelines in implant dentistry for dental hygiene programs was held on June 16, 1995 in Monterey, California. The conference was sponsored by the International Congress of Oral Implantologists, the American College of Oral Implantology, the American Society of Osseointegra...
journal_title:Implant dentistry
pub_type: 共识发展会议,指南,杂志文章,评审
doi:
更新日期:1995-10-01 00:00:00
abstract:PURPOSE:To study implant primary stability and bone healing using resonance frequency analysis in different anatomical locations 4 months after placement. MATERIAL AND METHODS:Fifty-six partially edentulous patients restored by dental implants were included. Overall, 214 implants were placed without bone or soft tissu...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000019
更新日期:2014-02-01 00:00:00
abstract::Autogenous bone has long been considered the gold standard of all bone grafting materials. However, complications have been associated with autogenous bone-harvesting procedures. This article suggests that an alternative approach, grafting with autogenous bone marrow aspirate, may become a new platinum standard. Bone ...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/01.id.0000190419.04705.ef
更新日期:2005-12-01 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:PURPOSE:To evaluate the influence of Morse taper implant index on microleakage. MATERIALS AND METHODS:Thirty implants and abutments were divided into 3 groups (n = 10): CM1 (universal post and implant without index), CM2 (universal post and implant with index), and CM3 (abutment and implant with index). To evaluate th...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000284
更新日期:2015-10-01 00:00:00
abstract:PURPOSE:The purpose of this study was to compare 2 splinted impression transfer techniques for implant-supported prostheses. MATERIALS:A metal matrix (control) with 4 implants was used. The implants were positioned at 90, 80, 75, and 65 degrees in relation to the surface of the matrix. Squared impression copings were ...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e3181cd715f
更新日期:2010-04-01 00:00:00