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International Journal of Oral & Maxillofacial Implants

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https://read.qxmd.com/read/30742138/piezoelectric-device-versus-conventional-osteotomy-instruments-in-the-comparison-of-three-different-bone-harvesting-methods-an-istomorphometric-phonometric-and-chronometric-evaluation
#1
Nicola Alberto Valente, Lorenzo Cosma, Giuseppina Nocca, Antonio D'Addona, Carlo Lajolo
PURPOSE: This study was conducted to compare the bone cutting performance of the piezoelectric device with traditional drills in terms of cut execution time, environmental noise produced, surface morphology characteristics, and residual cell vitality of the bone samples. MATERIALS AND METHODS: Two fresh pig jaws were obtained from a local slaughterhouse, and nine bone samples with a standard size (1 cm3 ) were harvested from each jaw: three using piezosurgery, three with a multiblade bur mounted on a surgical handpiece, and three with a diamond bur mounted on a high-speed handpiece, for a total of 18 samples...
February 11, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30742137/characterization-of-the-leukocyte-and-platelet-rich-fibrin-block-release-of-growth-factors-cellular-content-and-structure
#2
Ana B Castro, Simone Cortellini, Andy Temmerman, Xin Li, Nelson Pinto, Wim Teughels, Marc Quirynen
PURPOSE: The leukocyte- and platelet-rich fibrin block (L-PRF block) is a composite graft that combines a xenograft that is acting as a scaffold with L-PRF membranes that serve as a bioactive nodule with osteoinductive capacity. This study evaluated the properties of the L-PRF block and its components in terms of release of growth factors, cellular content, and structure. MATERIALS AND METHODS: The concentration of transforming growth factor-β1 (TGF-β1), vascular endothelial growth factor (VEGF), platelet-derived growth factor-AB (PDGF-AB) and bone morphogenetic protein-1 (BMP-1) released by a L-PRF membrane (mb) and a L-PRF block were examined with ELISA for five time intervals (0 to 4 hours, 4 hours to 1 day, 1 to 3 days, 3 to 7 days, 7 to 14 days)...
February 11, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30716148/a-novel-anabolic-conjugate-c3-in-the-matrix-of-dicalcium-phosphate-onlay-block-grafts-for-achieving-vertical-bone-augmentation-an-experimental-study-on-rabbit-calvaria
#3
Zeeshan Sheikh, Gang Chen, Marion Thévenin, Robert N Young, Marc D Grynpas, Michael Glogauer
PURPOSE: Achieving successful and predictable alveolar ridge augmentation in the vertical dimension is extremely challenging. Several materials have been investigated to achieve vertical ridge augmentation; however, the results are highly unpredictable. The collaborative team presenting this research has developed brushite- and monetite-based grafts that incorporate in their matrix a novel bone anabolic conjugate (C3) of a bisphosphonate and a potent bone-activating EP4 receptor agonist...
February 4, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30716147/ligature-induced-peri-implant-bone-loss-around-loaded-zirconia-and-titanium-implants
#4
Stefan Roehling, Michael Gahlert, Simone Janner, Bo Meng, Henriette Woelfler, David L Cochran
PURPOSE: To radiographically investigate ligature-induced peri-implant bone loss around loaded titanium (Ti-SLA) and zirconia (ZrO2 -ZLA) implants using a canine model. MATERIALS AND METHODS: Forty sandblasted and acid-etched titanium and zirconia implants were alternately placed in the mandibles of five canines (20 Ti-SLA, 20 ZrO2 -ZLA). Implants were restored after 6 weeks of unloaded healing. After 4 weeks of functional loading, oral hygiene procedures were stopped and experimental peri-implant bone loss was initiated by placing cotton ligatures...
February 4, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30716146/mmp-13-polymorphism-as-a-risk-factor-in-implant-loss
#5
Francielle Boçon de Araujo Munhoz, Filipe Polese Branco, Ricardo Lehtonen Rodrigues Souza, Maria Cristina Dos Santos
PURPOSE: To investigate whether MMP-13 g.-77 A > G (rs2252070) gene polymorphism is associated with early implants loss. MATERIALS AND METHODS: Two hundred nonsmoking volunteers in good oral health, > 18 years of age, and found to be periodontally healthy by clinical examination were matched by age, sex, and implant position and separated into two groups: control group (100 patients with one or more healthy implants for a minimum of 1 year) and test group (100 patients who had suffered early implant loss, considered when implants presented mobility and/or pain before or during abutment connection, requiring their removal)...
February 4, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30716145/bone-volume-assessment-around-dental-implants-after-open-maxillary-sinus-elevation-surgery-a-quantitative-approach-to-cbct-images
#6
Susanne Lewin, Christopher Riben, Andreas Thor, Caroline Öhman-Mägi
PURPOSE: Cone beam computed tomography (CBCT) is an important imaging technique in maxillofacial evaluations. However, application-specific image analysis methods aimed at extracting quantitative information from these images need to be further developed. The aim of this study was to provide a robust and objective method that could assess radiologic changes around dental implants after sinus elevation surgery with simultaneous implant placement. MATERIALS AND METHODS: The study was performed retrospectively on patients fulfilling the inclusion criteria...
February 4, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30716144/the-impact-of-metal-artifacts-within-cone-beam-computed-tomography-data-on-the-accuracy-of-computer-based-implant-surgery-an-in-vitro-study
#7
Jong-Eun Kim, Young-Bum Park, June-Sung Shim, Hong-Seok Moon
PURPOSE: To evaluate differences in implant placement accuracy depending upon the presence or absence of metal restorations, as well as between distal extension and tooth-end cases. MATERIALS AND METHODS: Five experimental groups were designed with mandibular models exhibiting the following dental statuses: six anterior teeth and bilateral second molars, with bilaterally edentulous sites between them (group NN); six anterior teeth (group NDE); identical to group NN, with the six anterior teeth restored with metal crowns (group MN); identical to group NDE, with the six anterior teeth restored with metal crowns (group MDE); identical to group NN, with all remaining teeth restored with metal crowns (group MM)...
February 4, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30716143/patient-centered-risk-assessment-in-implant-treatment-planning
#8
Donald A Curtis, Guo-Hao Lin, Alison Fishman, Steven J Sadowsky, Diane M Daubert, Yvonne Kapila, Arun B Sharma, Gregory J Conte, Craig Y Yonemura, Carlo P Marinello, Rich Kao
PURPOSE: To evaluate the current scientific evidence on estimating cumulative risk for biologic complications relating to dental implants and to develop a patient-centered risk assessment tool for establishing aggregate risk. MATERIALS AND METHODS: A review of the scientific literature on risk indicators relating to dental implants was completed with the goal of identifying and weighting individual risk indicators so aggregate biologic risk could be estimated. Three authors completed independent reviews of the literature, identifying 31 systematic reviews on risk indicators for biologic complications with dental implants, from which 24 potential risk indicators were considered...
February 4, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30716142/treatment-planning-the-edentulous-mandible-review-of-biomechanical-and-clinical-considerations-an-update
#9
Edmond Bedrossian, E Armand Bedrossian
PURPOSE: This review article evaluated biomechanical studies, finite element analyses, and clinical papers on the prosthetic and surgical principles for the survival of implants when reconstructing the edentulous mandible, including the use of a three-implant-supported fixed prosthesis. MATERIALS AND METHODS: A comprehensive search of studies published from 1983 to December 2017 listed in the PubMed/MEDLINE databases was performed. Relevant studies were selected according to predetermined inclusion and exclusion criteria...
February 4, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30716141/fracture-resistance-of-titanium-zirconia-and-ceramic-reinforced-polyetheretherketone-implant-abutments-supporting-cad-cam-monolithic-lithium-disilicate-ceramic-crowns-after-aging
#10
Saadet Sağlam Atsü, M Emin Aksan, Ali Can Bulut
PURPOSE: The purpose of this study was to compare the fracture resistances and the fracture types of titanium, zirconia, and ceramic-reinforced polyetheretherketone (PEEK) implant abutments supporting CAD/CAM monolithic lithium disilicate ceramic crowns after in vitro dynamic loading and thermocycling aging. MATERIALS AND METHODS: Three implant abutment (SKY Implant) groups-titanium (group Ti, control); zirconia with titanium base (group Zr); and ceramic-reinforced PEEK (BioHPP) with titanium base (group RPEEK); n = 12 each-were used...
February 4, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30703185/comparison-study-of-three-hydroxyapatite-based-bone-substitutes-in-a-calvarial-defect-model-in-rabbits
#11
Antian Xu, Chuan Zhou, Wenting Qi, Fuming He
PURPOSE: The aim of this study was to investigate the in vivo performance, including bone regeneration and biomaterial degradation, of three hydroxyapatite-based bone substitutes at surgically created defects in the cranium of rabbits. MATERIALS AND METHODS: A bovine-derived hydroxyapatite (BHA), a synthetic hydroxyapatite (SHA), and a nano-hydroxyapatite with collagen I (nHAC) composite were characterized and then placed in calvarial defects in rabbits. After surgery at 6 weeks and 12 weeks, the animals were sacrificed for further microcomputed tomography, histologic, and histomorphometric analyses...
January 31, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30703184/the-role-of-implant-tooth-distance-on-marginal-bone-levels-and-esthetics
#12
Theresa Wang, Ingeborg J De Kok, Sheng Zhong, Christopher Vo, Gustavo Mendonça, Salvador Nares, Lyndon F Cooper
PURPOSE: The peri-implant bone and mucosa architecture contribute to the health and esthetics of single-tooth dental implants. The implant-tooth distance (ITD) has been regarded as a key determinant of their outcomes. This study was conducted to determine the relationship between ITD and peri-implant bone, mucosa, and pink esthetic scores (PES) for anterior single-tooth implants. MATERIALS AND METHODS: For 44 dental implants with a microthread conical abutment interface design placed in 38 participants, periapical radiographs and photographs were evaluated at 1 and 4 years to assess interproximal bone levels and PES...
January 31, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30703183/effect-of-labial-implant-inclination-on-the-retention-and-stability-of-different-resilient-stud-attachments-for-mandibular-implant-overdentures-an-in-vitro-study
#13
Moustafa Abdou ELsyad, Radwa Mk Emera, Abdullah Mohamed Ibrahim
PURPOSE: This study evaluated the influence of labial implant inclination on the retention and stability of different resilient stud attachments for mandibular implant overdentures. MATERIALS AND METHODS: Four identical mandibular edentulous acrylic resin models were fabricated. For each model, two implants were inserted at the canine areas with different degrees of labial inclination: 0, 10, 20, and 30 degrees. Four experimental overdentures were fabricated over the models and fitted to the implants using resilient stud attachments...
January 31, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30703182/osseointegration-of-superhydrophilic-implants-placed-in-defect-grafted-bones
#14
Edgard El Chaar, Lei Zhang, Yongsheng Zhou, Rebecca Sandgren, Jean-Christoph Fricain, Michel Dard, Benjamin Pippenger, Sylvain Catros
PURPOSE: Only limited information on the effect of implant surface hydrophilicity in conjunction with simultaneous bone augmentation is available. In this study, new bone growth around implants with a superhydrophilic modSLA (SLActive) and hydrophobic SLA (SLA) surface were compared in circumferential defects when grafted in conjunction with mineralized cancellous bone allograft (MCBA, maxgraft) or sintered bovine bone mineral (SBBM, cerabone). MATERIALS AND METHODS: The osseointegration and bone formation in circumferential defects in minipig mandibles around Straumann Roxolid, Ø 3...
January 31, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30703181/immediately-loaded-fixed-full-arch-implant-retained-prosthesis-clinical-analysis-when-using-a-moderate-insertion-torque
#15
Steven E Eckert, Gregory Hueler, Noah Sandler, Remi Elkattah, D Cary McNeil
PURPOSE: This study uses intentionally tilted implants with a moderate insertion torque to retain an immediately loaded fixed full-arch implant-retained prosthesis using four implants. The aims of this study were to determine the likelihood that this type of implant-retained prosthesis can be predictably provided on the day of implant placement, the survival rate when providing immediate load, and the importance of insertion torque on the survival of the implants. MATERIALS AND METHODS: All implants that were placed after August 1, 2015 and before December 31, 2016 at the ClearChoice Dental Implant Center of Minneapolis were recorded...
January 31, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30703180/survival-rates-of-short-dental-implants-%C3%A2-6-5-mm-placed-in-posterior-edentulous-ridges-and-factors-affecting-their-survival-after-a-12-month-follow-up-period-a-systematic-review
#16
Sulieman S Al-Johany
PURPOSE: Dental implant placement in atrophic ridges is challenged by availability of bone and proximity to vital structures. Although short dental implants have been considered favorable, there is no consensus regarding their long-term survival and factors affecting it. This systematic review addressed the focused question, "What is the survival rate of short dental implants (SDI; length ≤ 6.5 mm) placed in posterior edentulous ridges without any ridge augmentation procedures and followed up for 12 months post-prosthetic loading, and what are the factors affecting their survival?" MATERIALS AND METHODS: Based on a search of the indexed literature, 51 studies fulfilling the inclusion criteria were quantitatively reviewed...
January 31, 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30521661/comparison-of-three-dimensional-accuracy-of-digital-and-conventional-implant-impressions-effect-of-interimplant-distance-in-an-edentulous-arch
#17
Ming Yi Tan, Sophia Hui Xin Yee, Keng Mun Wong, Ying Han Tan, Keson Beng Choon Tan
PURPOSE: This study compared the three-dimensional (3D) accuracy of conventional impressions with digital impression systems (intraoral scanners and dental laboratory scanners) for two different interimplant distances in maxillary edentulous arches. MATERIALS AND METHODS: Six impression systems comprising one conventional impression material(Impregum), two intraoral scanners (TRIOS and True Definition), and three dental laboratory scanners (Ceramill Map400, inEos X5, and D900) were evaluated on two completely edentulous maxillary arch master models (A and B) with six and eight implants, respectively...
December 5, 2018: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30521660/accuracy-of-a-dynamic-dental-implant-navigation-system-in-a-private-practice
#18
Luigi V Stefanelli, Bradley S DeGroot, David I Lipton, George A Mandelaris
PURPOSE: To evaluate the in vivo accuracy of dental implants placed using a dynamic computer-aided dental implant (CAI) navigation system. The impact of various factors on accuracy was also analyzed. MATERIALS AND METHODS: A retrospective, in vivo study was performed during the period of October 2015 to December 2017. Data were obtained on all implants placed during this time frame. A chart review was conducted to identify the type of flap, number of implants placed, number of patients treated, and factors related to the description of edentulism (partial or complete)...
December 5, 2018: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30521659/influence-of-uv-irradiation-and-cold-atmospheric-pressure-plasma-on-zirconia-surfaces-an-in-vitro-study
#19
Ralf Smeets, Anders Henningsen, Roman Heuberger, Oliver Hanisch, Frank Schwarz, Clarissa Precht
PURPOSE: To compare the influence of ultraviolet (UV) irradiation and cold atmospheric pressure plasma (CAP) treatment on surface structure, surface chemistry, cytocompatibility, and cell behavior on zirconia in vitro. MATERIALS AND METHODS: Zirconia samples (TZ-3YSBE) were treated by UV irradiation, oxygen plasma, or argon plasma for 12 minutes each and compared with the nontreated samples. Surface analysis was conducted using scanning electron microscopy, roughness analysis, and x-ray photoelectron spectroscopy...
December 5, 2018: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/30521657/bone-graft-displacement-after-maxillary-sinus-floor-augmentation-with-or-without-covering-barrier-membrane-a-retrospective-computed-tomographic-image-evaluation
#20
Laurent Ohayon, Silvio Taschieri, Anton Friedmann, Massimo Del Fabbro
PURPOSE: Scientific publications have recently found that bone graft quality and implant survival rates were not influenced by antrostomy membrane coverage during maxillary sinus floor augmentation with a lateral approach. The aim of this study was to evaluate the stability of the bone substitute after a maxillary sinus floor augmentation procedure with or without using a covering membrane. MATERIALS AND METHODS: This retrospective study evaluated all patients who were enrolled between April 2016 and January 2017...
December 5, 2018: International Journal of Oral & Maxillofacial Implants
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