Abstract:
:The accuracy of determining marginal bone height changes around osseointegrated implants depends on the validity of comparing serial films and the reliability of the measurements. X-ray beam orientation changes can alter the validity of serial films. A human dry mandible containing a Brånemark implant was irradiated +/- 12 degrees in the vertical plane at 1-degree intervals to the perpendicular to the long axis of the fixture. The thread width was recorded on both sides of each fixture image using a computer. Twenty-five randomized unclassified images were remeasured and the vertical angle of the x-ray beam was estimated from the previous measurements to test for validity of comparing images. The reliability of measurements with altered image magnification and penumbra were calculated. The reliability of 24 repeated thread width measurements was a SD of 0.01 mm. Of the 25 unknown beam angulations, 32 percent matched correctly, 20 percent +/- 1 degree, 16 percent +/- 2 degrees, or 68 percent < or = +/- 2 degrees. Alteration from a short to a long cone technique was estimated to produce magnification errors similar to the reliability SD of 0.01 mm. Similarly the penumbra varied from 0.057 mm to 0.032 mm with short to long cones using a 1.0-mm focal spot. With a 0.6-mm focal spot, the smallest penumbra of 0.19 mm was twice the measurement reliability. This method demonstrated x-ray beam angulation and validity for comparing serial films can be estimated for the extreme variations but not accurately for +9 to -6 degrees from a tangent to the fixture.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Implant Dentjournal_title
Implant dentistryauthors
Benn DKkeywords:
subject
Has Abstractpub_date
1992-04-01 00:00:00pages
79-83issue
1eissn
1056-6163issn
1538-2982journal_volume
1pub_type
杂志文章abstract:BACKGROUND:The goal of this present study was to evaluate the behavior of neonatal rat calvarial osteoblast-like cells cultured on different implant surfaces. MATERIALS:Sandblasted acid-etched (SLA) surfaces of 2 different companies with different alloy properties were used. These were named as SLA-1 and SLA-2. The os...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e31818c5bd8
更新日期:2009-02-01 00:00:00
abstract:OBJECTIVE:To perform a topographical characterization of a titanium alloy subjected to different surface treatments using roughness evaluation, scanning electron microscopy, and atomic force microscopy. MATERIALS AND METHODS:For each group, 6 discs of a titanium alloy had their surfaces modified by 4 treatments. All s...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e3182566e19
更新日期:2012-06-01 00:00:00
abstract:AIMS:The primary aim of this study was to evaluate the 1-year crestal bone loss and success rate of an immediately placed single-stage implant placed and restored by novice operators. A secondary aim was to determine the patient's assessment of the appearance of the final restoration. METHODS:Fifty-one patients receiv...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e3181bcd36b
更新日期:2010-02-01 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:The association of doxycycline (DOX) and autogenous bone on repair of critical-size defects was evaluated. MATERIALS AND METHODS:Fifty albino rats were divided into 5 groups (n = 10). A 5-mm diameter defect was treated with: control (CO)-blood clot; DOX in Natrosol (NAT)-10% gel; NAT-gel; particulate autogenou...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000783
更新日期:2018-08-01 00:00:00
abstract::Dental implant surgery in the anterior mandible is considered a relatively routine and safe procedure with minimal morbidity. A case of brisk, pulsatile bleeding from the anterior mandibular incisive canal and its management using an active hemostatic matrix is presented. In addition, a review of the literature regard...
journal_title:Implant dentistry
pub_type: 杂志文章,评审
doi:10.1097/ID.0b013e318264d70d
更新日期:2012-10-01 00:00:00
abstract:BACKGROUND:The predictability and success of endosseous dental implants has secured their place as a standard treatment modality. Nevertheless, a small number of implants will fail regardless of operator experience or clinically recognizable cause. This article presents two cases of early failure of two-stage dental im...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/00008505-200207000-00007
更新日期:2002-01-01 00:00:00
abstract::A technique is presented for placement of implants at the time of tooth extraction in the precisely desired positions, regardless of extraction socket morphology. To date, 162 implants have been placed utilizing this technique. One was mobile at uncovery and removed. The other implants have been successfully in functi...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/00008505-200201000-00018
更新日期:2002-01-01 00:00:00
abstract::Placement of endosseous implants and inferior alveolar nerve transposition is a treatment option for patients with an edentulous posterior mandible with inadequate bone height superior to the inferior alveolar canal. Complications associated with these procedures include infection, prolonged neurosensory disturbances,...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/01.id.0000078232.90185.82
更新日期:2003-01-01 00:00:00
abstract:OBJECTIVE:To use a modified direct contact test (DCT) to evaluate the bacterial growth on 3 commercially available implants. MATERIALS AND METHODS:Streptococcus salivarius growth was tested on 1 machined surface and 2 commercial rough surface implants. Seven implants from each group were fixed to the cover of a 96-wel...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000697
更新日期:2017-12-01 00:00:00
abstract:OBJECTIVE:This systematic review evaluated survival rates, marginal bone loss (MBL), and complications of using 2 to 4 implants to support full-arch fixed prostheses in the mandible. MATERIALS AND METHODS:An electronic search was performed in PubMed, Web of Science, and the Cochrane Central Register of Controlled Tria...
journal_title:Implant dentistry
pub_type: 杂志文章,评审
doi:10.1097/ID.0000000000000414
更新日期:2016-06-01 00:00:00
abstract::The biologic principle of guided bone regeneration has been successfully used to prevent bone loss in extraction sites. This study comprises 420 cases of alveolar ridge maintenance in preparation for dental implant placements. Nonexpanded polytetrafluoroethylene membranes were positioned over all extraction sites and ...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e3181cda72c
更新日期:2010-02-01 00:00:00
abstract:OBJECTIVE:The aim of this work was to determine the relevance of Choukroun's platelet-rich fibrin (PRF) in dental implantology by determining the in vitro effects of soluble factors released by PRF clot. We used 3 different cell lines implicated in dental implantology: osteoblast, keratinocyte, and fibroblast. METHODS...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e31822b9cb4
更新日期:2012-02-01 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::Cannon burs with only one cutting surface and round burs with multiple cutting surfaces were evaluated in preparing bone sites for root form implant placement in five Macaca fascicularis monkeys. The cannon burs did not appear to produce a bone surface more conducive to osseointegration than the round burs. Bone cutti...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/00008505-199404000-00009
更新日期:1994-04-01 00:00:00
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:PURPOSE:This study evaluated the effect of the platform-switching phenomenon, the use of a smaller diameter abutment on a larger diameter implant platform. Clinical and histological outcomes of the periimplant mucosa around titanium abutments in a nonsubmerged implant were evaluated. MATERIALS AND METHODS:Ten healthy ...
journal_title:Implant dentistry
pub_type: 临床试验,杂志文章
doi:10.1097/ID.0000000000000209
更新日期:2015-02-01 00:00:00
abstract:PURPOSE:This study was performed to investigate the histologic and histomorphometric findings of 2 different types of implant. MATERIALS AND METHODS:Resorbable blasting media (RBM) and sandblasted with larger grit and acid etched (SLA) surfaced implants (24 fixtures in each group) were installed in posterior maxilla o...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0000000000000292
更新日期:2015-10-01 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: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 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:AIM:This article is a case report of a patient in whom the prosthetic planning indicated the necessity of an incisive canal deflation for the correct installation of an implant that is to be osseointegrated. CASE REPORT:In the reopening phase after the bone graft installation, the incisive canal deflation (biopsy of i...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e3181bd0c7c
更新日期:2009-12-01 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::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: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:PURPOSE:To document the clinical and histologic outcomes of sinus augmentation using a novel allogenic bone substitute as a sole grafting material. MATERIALS:Patients in need of sinus augmentation before implant placement were recruited for this study. Sinus augmentation procedures were performed following a lateral a...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e3181e59b32
更新日期:2010-08-01 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::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:OBJECTIVE:To evaluate the bone regeneration of cervical defects produced around titanium implants filled with blood clot and filled with centrifuged bone marrow (CBM) by means of histomorphometric analysis. MATERIALS AND METHODS:Twelve rabbits received 2 titanium implants in each right tibia, with the upper cortical p...
journal_title:Implant dentistry
pub_type: 杂志文章
doi:10.1097/ID.0b013e31826916b6
更新日期:2012-12-01 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