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International Journal of Oral & Maxillofacial Implants

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https://www.readbyqxmd.com/read/27912213/histomorphometric-evaluation-of-two-different-bone-substitutes-in-sinus-augmentation-procedures-a-randomized-controlled-trial-in-humans
#1
Ruggero Rodriguez Baena, Roberta Pastorino, Enrico Felice Gherlone, Letizia Perillo, Saturnino Marco Lupi, Alessandra Lucchese
PURPOSE: The histomorphometric results of sinus floor augmentation with deproteinized bovine bone (DBB) and a new fully synthetic bone substitute, poly(lactic-co-glycolic acid/hydroxyapatite) (PLGA/HA), were compared in humans. MATERIALS AND METHODS: Twelve maxillary sinuses of eight patients requiring major maxillary sinus floor augmentation and free of concomitant conditions (ASA scores 1 and 2) were studied. Lateral sinus augmentation was performed using DBB or PLGA/HA grafts; sites were randomly assigned to control or test groups...
December 2, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27835708/meta-analysis-of-randomized-controlled-trials-comparing-clinical-outcomes-between-short-implants-and-long-implants-with-bone-augmentation-procedure
#2
Qingchun Tong, Xingwen Zhang, Liming Yu
PURPOSE: The purpose of this meta-analysis was to assess and compare clinical outcomes of short implants versus long implants placed in conjunction with a bone augmentation procedure. MATERIALS AND METHODS: The eligible studies were searched from PubMed, Embase, Springer link, and the Cochrane library databases up to 23 January 2015. Prosthesis failures, implant failures, complications, and marginal bone loss were the clinical outcomes measured. The pooled weighted mean difference (WMD) or risk ratios (RRs) and their 95% confidence intervals (CIs) were used to measure the effect size of continuous variables and dichotomous variables, respectively...
November 11, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27835707/cortical-and-trabecular-bone-healing-patterns-and-quantification-for-three-different-dental-implant-systems
#3
Heloisa F Marão, Ryo Jimbo, Rodrigo Neiva, Luiz Fernando Gil, Michelle Bowers, Estevam A Bonfante, Nick Tovar, Malvin N Janal, Paulo G Coelho
PURPOSE: The present study hypothesized that different bone healing patterns through initial stages of osseointegration would be observed when three distinct commercially available implant systems (Nobel Groovy, Implacil, and Zimmer TSV) were used, leading to significant variations in histometric levels of total bone and new bone formation during the osseointegration process. MATERIALS AND METHODS: A total of 48 implants were placed bilaterally on the tibias of eight beagle dogs and allowed to heal for 2 and 6 weeks...
November 11, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27835706/association-between-peri-implant-bone-morphology-and-marginal-bone-loss-a-retrospective-study-on-implant-supported-mandibular-overdentures
#4
Qian Ding, Lei Zhang, Wil Geraets, Wuqing Wu, Yongsheng Zhou, Daniel Wismeijer, Qiufei Xie
PURPOSE: The present study aimed to explore the association between marginal bone loss and type of peri-implant bony defect determined using a new peri-implant bony defect classification system. MATERIALS AND METHODS: A total of 110 patients with implant-supported mandibular overdentures were involved. Clinical information was collected, including gender, age, smoking habit, and the overdenture attachment system used. Peri-implant bony defect types and marginal distances (ie, distance between the marginal bone level and the top of the implant shoulder) of all sites were identified on panoramic radiographs by a single experienced observer...
November 11, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27741331/dimensional-changes-following-immediate-and-delayed-implant-placement-a-histomorphometric-study-in-the-canine
#5
Hee-Yong Yi, Young-Seok Park, Benjamin E Pippenger, Bongho Lee, Richard J Miron, Michel Dard
PURPOSE: The placement of immediate implants has become a routine treatment modality for the replacement of missing teeth. The aim of the present study was to evaluate dimensional changes of hard tissues following tooth extraction, implant bed preparation, and the subsequent integration of titanium implants placed immediately or following an 8-week healing period. MATERIALS AND METHODS: All mandibular premolars were extracted and used as experimental sites in five beagle dogs...
October 14, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27741330/the-accuracy-of-implant-placement-by-experienced-surgeons-guided-vs-freehand-approach-in-a-simulated-plastic-model
#6
Jacques Vermeulen
PURPOSE: To investigate the difference in accuracy between freehand and guided single-implant placement in situations with one or more missing teeth as performed by experienced surgeons. MATERIALS AND METHODS: A total of 80 implants were placed by 10 experienced clinicians in the anterior site of maxillary models, made of polyamide by selective laser sintering and mounted in a dummy head. Each clinician performed the same four single-implant cases via freehand surgery and then with a three-dimensional fabricated SIMPLANT Guide...
October 14, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27741329/a-novel-osseous-densification-approach-in-implant-osteotomy-preparation-to-increase-biomechanical-primary-stability-bone-mineral-density-and-bone-to-implant-contact
#7
Salah Huwais, Eric G Meyer
PURPOSE: It is essential to have sufficient bone bulk and density at the implant site in order to achieve good bone-to-implant contact and primary stability, which are crucial for osseointegration. A new osteotomy preparation technique was recently introduced that uses a bone preservation method that creates a layer of compacted bone along the surface of the osteotomy. The hypothesis of this study was that this novel technique would increase primary implant stability, bone mineral density, and the percentage of bone at the implant surface compared with drilling technique...
October 14, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27741328/use-of-biologic-agents-to-promote-bone-formation-in-implant-dentistry-a-critical-assessment-of-systematic-reviews
#8
Marco Antonio Alarcón, Karla Tatiana Diaz, Luisiana Aranda, Emilio Alfredo Cafferata, Clovis Mariano Faggion, Alberto Monje
PURPOSE: The use of biologic agents is emerging in bone regeneration procedures due to their ability to increase cellular events in wound healing and therefore to obtain more predictable outcomes. Hence, the aim of the present study was to critically evaluate the methodology of systematic reviews investigating biologic agents in promoting bone formation and implant site development. MATERIALS AND METHODS: A literature search for systematic reviews with and without meta-analyses was performed in Medline, Embase, and the Cochrane database, as well as in journals with high impact factors in periodontics and implant dentistry...
October 14, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27706267/changes-in-lip-profile-of-edentulous-patients-after-placement-of-maxillary-implant-supported-fixed-prosthesis-is-a-wax-try-in-a-reliable-diagnostic-tool
#9
Yuri Uhlendorf, Ivete Aparecida Sartori, Ana Cláudia Melo, Jean Uhlendorf
PURPOSE: A diagnostic wax try-in has been recommended to correctly design the future prosthesis for edentulous maxillae and to predict its effect on the supporting oral tissues. The objectives of this study were to analyze (1) the reliability of this diagnostic tool in planning fixed implant-supported prostheses and (2) the amount of prosthetic compensation required. MATERIALS AND METHODS: Nine female patients participated in this prospective study (mean age, 53...
October 5, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27706266/intermittent-parathyroid-hormone-improves-bone-formation-around-titanium-implants-in-osteoporotic-rat-maxillae
#10
Suhyun Park, Hyun-A Heo, Kyoung-Wook Kim, Jong-Seok Min, Sung-Woon Pyo
PURPOSE: Parathyroid hormone (PTH) plays an important role in the treatment of osteoporosis due to its anabolic effect. In this study, PTH was administered intermittently to rats with ovariectomy-induced osteoporosis, titanium implants were placed into the rat maxillae, and the response of surrounding bone was evaluated. MATERIALS AND METHODS: A total of 30 female 8-week-old Sprague-Dawley rats were either ovariectomized to induce osteoporosis or sham operated. After 8 weeks, the upper right first molar was extracted and after a 4-week healing period an implant was placed...
October 5, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27706265/precision-fit-of-screw-retained-implant-supported-fixed-dental-prostheses-fabricated-by-cad-cam-copy-milling-and-conventional-methods
#11
Danilo Gonzaga de França, Maria Helena Morais, Flávio D das Neves, Adriana Fonte Carreiro, Gustavo As Barbosa
PURPOSE: The aim of this study was to evaluate the effectiveness of fabrication methods (computer-aided design/computer-aided manufacture [CAD/CAM], copy-milling, and conventional casting) in the fit accuracy of three-unit, screw-retained fixed dental prostheses. MATERIALS AND METHODS: Sixteen three-unit implant-supported screw-retained frameworks were fabricated to fit an in vitro model. Eight frameworks were fabricated using the CAD/CAM system, four in zirconia and four in cobalt-chromium...
October 5, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27706264/three-dimensional-accuracy-of-digital-implant-impressions-effects-of-different-scanners-and-implant-level
#12
Amelia A Chew, Roxanna J Esguerra, K H Teoh, K M Wong, Simon D Ng, Keson B Tan
PURPOSE: To compare the three-dimensional (3D) accuracy of conventional direct implant impressions with digital implant impressions from three intraoral scanners, as well as different implant levels-bone level (BL) and tissue level (TL). MATERIALS AND METHODS: Two-implant master models were used to simulate a threeunit implant-supported fixed dental prosthesis. Conventional test models were made with direct impression copings and polyether impressions. Scan bodies were hand-tightened onto master models and scanned with the three scanners...
October 5, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27706263/gene-activated-titanium-surfaces-promote-in-vitro-osteogenesis
#13
Keerthi Atluri, Joun Lee, Denise Seabold, Satheesh Elangovan, Aliasger K Salem
PURPOSE: Commercially pure titanium (CpTi) and its alloys possess favorable mechanical and biologic properties for use as implants in orthopedics and dentistry. However, failures in osseointegration still exist and are common in select individuals with risk factors such as smoking. Therefore, in this study, a proposal was made to enhance the potential for osseointegration of CpTi discs by coating their surfaces with nanoplexes comprising polyethylenimine (PEI) and plasmid DNA (pDNA) encoding bone morphogenetic protein-2 (pBMP-2)...
October 5, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27706262/the-300-most-cited-articles-in-implant-dentistry
#14
Marco Antonio Alarcón, Diana Esparza, Carmen Montoya, Alberto Monje, Clovis Mariano Faggion
PURPOSE: The purpose of this study was to review and evaluate the characteristics of the 300 most-cited articles that have been published in the most important implant dentistry journals. MATERIALS AND METHODS: A search and selection of the most-cited articles up to October 2014 was conducted for implant journals with the highest impact factors, according to the ISI Web of Science. The 300-most-cited articles were evaluated according to the most commonly studied topics and methodological designs used...
October 5, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27643588/can-reinforcement-of-maxillary-implant-overdentures-decrease-stress-on-underlying-implants
#15
Toshihito Takahashi, Tomoya Gonda, Yoshinobu Maeda
PURPOSE: Reinforcement of maxillary implant overdentures is necessary not only for preventing prosthetic complications but also for protecting underlying structures, as it makes the denture base more rigid. However, few studies have investigated the effects of reinforcement on the underlying structure. The purpose of this study was to examine the effects of reinforcement on implant stress under various implant configurations and denture designs. MATERIALS AND METHODS: A maxillary edentulous model with implants and experimental overdentures with and without palatal coverage and three types of cast reinforcement was fabricated...
September 19, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27643587/the-impact-of-implant-design-defect-size-and-type-of-superstructure-on-the-accessibility-of-nonsurgical-and-surgical-approaches-for-the-treatment-of-peri-implantitis
#16
David Polak, Efrat Maayan, Tali Chackartchi
PURPOSE: The success of nonsurgical or surgical treatments of peri-implantitis is unpredictable, often without a clear reason. The aim of this study was to investigate the efficacy of nonsurgical and surgical cleaning, focusing on the impact of implant design, defect size, type of superstructure, and experience of the operator. MATERIALS AND METHODS: Conical and straight implants were coated with a biofilm-like material and placed in shallow/deep defects in an artificial jaw model...
September 19, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27643586/extraoral-implants-for-anchoring-facial-prostheses-evaluation-of-success-and-survival-rates-in-three-anatomical-regions
#17
Heitor Batista Dos Reis, Joaquim Augusto Piras de Oliveira, Vanessa Arias Pecorari, Shiva Raoufi, Márcio Abrahão, Luciano Lauria Dib
PURPOSE: The aim of this study was to evaluate the success and survival rates of extraoral implants for the fixation of facial prostheses in three anatomical regions. MATERIALS AND METHODS: Subjects were consecutive patients with facial defects who underwent implant placement by the same surgeon in the orbital, nasal, and auricular regions between 2003 and 2012. After a minimum of 4 months of osseointegration, prostheses were anchored to the implants, and the patients were monitored for 11 to 111 months...
September 19, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27643585/implant-placement-accuracy-using-dynamic-navigation
#18
Michael S Block, Robert W Emery, Kathryn Lank, James Ryan
PURPOSE: The aim of this prospective study was to determine platform and angle accuracy for dental implants using dynamic navigation, a form of computer-assisted surgery. Three hypotheses were considered: (1) the overall accuracy for implant placement relative to the virtual plan is similar to that of static tooth-borne computerized tomography (CT)-generated guides; (2) the dynamic system is more accurate than freehand methods; and (3) there is a learning curve associated with this method...
September 19, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27632155/retrospective-analysis-of-129-consecutive-zygomatic-implants-used-to-rehabilitate-severely-resorbed-maxillae-in-a-two-stage-protocol
#19
Rafael Tajra Evangelista Araújo, Alexander Tadeu Sverzut, Alexandre Elias Trivellato, Cássio Edvard Sverzut
PURPOSE: To report on the clinical outcome of 129 zygomatic implants placed in 37 patients with severely resorbed partially or completely edentulous maxillae. MATERIALS AND METHODS: Patients who received zygomatic implants between 2007 and 2014 were included in this retrospective analysis. All patients were treated using the same surgical protocol, the sinus slot technique. The following data were recorded: sex, age, race, medical history, etiology, addictions, degree of bone atrophy, type and size of zygomatic implants, number of implants placed, type of prosthesis, survival rate, and success of implants and complications...
September 15, 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27632154/the-effect-of-torque-application-technique-on-screw-preload-of-implant-supported-prostheses
#20
Hanan Nejer Al-Otaibi, Ahlam Almutairi, Jawza Alfarraj, Wejdan Algesadi
PURPOSE: To examine the effect of different torque application techniques (torqued, retorqued once, and retorqued twice) on the removal torque of implant-supported fixed complete dental prostheses. MATERIALS AND METHODS: Four Nobel Biocare implants (4.3 × 13 + 3; 13-mm thread height + 3-mm collar height) were stabilized temporarily inside four holes made in an acrylic mandibular master model. A metal framework was constructed, casted, and finished using a standardized technique...
September 15, 2016: International Journal of Oral & Maxillofacial Implants
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