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International Journal of Oral & Maxillofacial Implants

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https://www.readbyqxmd.com/read/29543930/evaluation-of-two-3d-printers-for-guided-implant-surgery
#1
Bruno Sommacal, Miodrag Savic, Andreas Filippi, Sebastian Kühl, Florian M Thieringer
PURPOSE: To compare the suitability of a fused filament fabrication (FFF) consumer 3D printer with a professional digital light processing (DLP) printer for the production of surgical templates for guided oral implant surgery. MATERIALS AND METHODS: Eight virtual templates were printed with two different 3D printers. These were optically scanned and the incongruences between virtual and printed templates were determined after alignment of the surface scans and the virtual data...
March 15, 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29543926/gene-expression-and-microcomputed-tomography-analysis-of-grafted-bone-using-deproteinized-bovine-bone-and-freeze-dried-human-bone
#2
Thanyaporn Kangwannarongkul, Keskanya Subbalekha, Philaiporn Vivatbutsiri, Jaijam Suwanwela
PURPOSE: Bio-Oss and demineralized freeze-dried bone allograft (DFDBA) are two commercial bone grafts that have been associated with clinical success for many years. However, there are few in vivo studies regarding their healing mechanism. The purpose of this study was to investigate the level of bone formation using microcomputed tomography (micro-CT) and gene expression in mouse calvaria at 1 and 3 months after bone grafting with deproteinized bovine bone and freeze-dried human bone, and compare them to natural bone healing...
March 15, 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763507/effect-of-titanium-surfaces-on-the-osteogenic-differentiation-of-human-adipose-derived-stem-cells
#3
Diogo Godoy Zanicotti, Warwick John Duncan, Gregory John Seymour, Dawn Elizabeth Coates
PURPOSE: To investigate whether human adipose-derived stem cells will form a functional bone-like matrix on titanium substrates. The behavior of human adipose-derived stem cells was examined when grown in either serum-free, xeno-free stem cell growth medium or osteogenic differentiation medium and cultured on either machined titanium (MTi) or on roughened alumina-blasted titanium (ABTi) discs. MATERIALS AND METHODS: Cellular proliferation, extracellular mineralized matrix production, osteogenic-related protein production (RUNX2 and osteocalcin), and gene expression for pluripotency and self-renewal (TERT and OCT4) and osteogenic-related (MSX2, RUNX2, and BGLAP) genes were performed...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763506/simplifying-zygomatic-implant-site-preparation-using-ultrasonic-navigation-a-technical-note
#4
Gerardo Pellegrino, Achille Tarsitano, Valerio Taraschi, Tomaso Vercellotti, Claudio Marchetti
Zygomatic implant site preparation could be considered a challenging procedure because of the use of a very long twist drill that could sometimes be difficult to control due to the need for drilling the malar bone on an oblique surface. Ultrasound was recently suggested to achieve better control, but the specific long tips required are not readily available, and the elongated tip also tends to reduce the efficacy. This technical note describes a proposal of a novel computer-aided technique to simplify the procedure of zygomatic implant site preparation...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763505/influence-of-alveolar-bone-defects-on-the-stress-distribution-in-quad-zygomatic-implant-supported-maxillary-prosthesis
#5
Yuanyuan Duan, Ravi Chandran, Denise Cherry
PURPOSE: The purpose of this study was to create three-dimensional composite models of quad zygomatic implant-supported maxillary prostheses with a variety of alveolar bone defects around implant sites, and to investigate the stress distribution in the surrounding bone using the finite element analysis (FEA) method. MATERIALS AND METHODS: Three-dimensional models of titanium zygomatic implants, maxillary prostheses, and human skulls were created and assembled using Mimics based on microcomputed tomography and cone beam computed tomography images...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763504/investigational-clinical-trial-of-a-prototype-optoelectronic-computer-aided-navigation-device-for-dental-implant-surgery
#6
Asbjørn Jokstad, Brenton Winnett, Joseph Fava, David Powell, Eszter Somogyi-Ganss
PURPOSE: New digital technologies enable real-time computer-aided (CA) three-dimensional (3D) guidance during dental implant surgery. The aim of this investigational clinical trial was to demonstrate the safety and effectiveness of a prototype optoelectronic CA-navigation device in comparison with the conventional approach for planning and effecting dental implant surgery. MATERIALS AND METHODS: Study participants with up to four missing teeth were recruited from the pool of patients referred to the University of Toronto Graduate Prosthodontics clinic...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763503/clinical-performance-of-dental-implants-following-sinus-floor-augmentation-a-systematic-review-and-meta-analysis-of-clinical-trials-with-at-least-3-years-of-follow-up
#7
Georgios N Antonoglou, Andreas Stavropoulos, Maria D Samara, Alexis Ioannidis, Goran I Benic, Spyridon N Papageorgiou, George K Sándor
PURPOSE: The purpose of this systematic review was to assess the survival of implants placed in augmented sinuses on a medium- to long-term basis, and identify factors affecting implant survival such as surgical technique, bone grafts, and timing of implant placement. MATERIALS AND METHODS: A literature search up to July 2016 was performed to identify prospective clinical studies on sinus floor augmentation in conjunction with implant placement with a minimum follow-up of 3 years...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763502/thermal-changes-during-guided-flapless-implant-site-preparation-a-comparative-study
#8
Gianpaolo Sannino, Enrico F Gherlone
PURPOSE: To compare intrabony thermal changes induced by two different protocols for guided implant surgery during the whole drilling procedure. MATERIALS AND METHODS: Two protocols for guided implant placement were evaluated in vitro using artificial bone cylinders. The control protocol provided traditional metal sleeves and a standard drilling sequence composed of four cylindrical triflute drills (cutting surface length = 16 mm). The test protocol provided a three-slot polyurethane sleeve and two cylindrical drills (second drill cutting surface length = 4 mm)...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763501/influence-of-lateral-windows-with-decreased-vertical-height-following-maxillary-sinus-floor-augmentation-a-1-year-clinical-and-radiographic-study
#9
Wei Lu, Jin Xu, Hui-Ming Wang, Fu-Ming He
PURPOSE: To verify whether lateral sinus floor elevation (LSFE) with the vertical height of the osteotomy decreased to 3 to 5 mm can achieve improvement compared with a conventional lateral window in terms of implant survival, graft stability, and related complications. MATERIALS AND METHODS: Of the 49 patients who were selected for inclusion in this retrospective study, 25 patients were in the test group and 24 were in the control group based on the vertical height of the lateral window...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763500/the-fate-of-lateral-ridge-augmentation-a-systematic-review-and-meta-analysis
#10
Basel Elnayef, Cristina Porta, Fernando Suárez-López Del Amo, Lorenzo Mordini, Jordi Gargallo-Albiol, Federico Hernández-Alfaro
PURPOSE: Owing to volumetric changes after tooth extraction, lateral ridge augmentation has become a common procedure prior or simultaneous to implant placement. Nonetheless, little is known with regard to the dimensional remodeling after healing of these lateral ridge augmentation procedures. Hence, the purpose of this systematic review was to assess the stability of bone grafting material between augmentation procedures and final healing, in terms of resorption rate. MATERIALS AND METHODS: An electronic and hand literature search was conducted in several databases, such as the Cochrane Oral Health Group Trials Register, Embase, and Cochrane Central Register of Controlled Trials, up until February 2017...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763499/flap-management-in-alveolar-ridge-preservation-a-systematic-review-and-meta-analysis
#11
Jungwon Lee, Jun-Beom Lee, Ki-Tae Koo, Yang-Jo Seol, Yong-Moo Lee
PURPOSE: This systematic review aimed to identify the effects of certain flap management procedures on ridge preservation on the basis of existing literature. MATERIALS AND METHODS: Electronic (MEDLINE, EMBASE, and Cochrane Central Register of controlled trials) and manual searches of the literature were conducted until February 2017. Randomized controlled trials (RCTs), controlled clinical trials (CCTs), and prospective cohort studies that involved at least 10 subjects were eligible for this systematic review...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763498/effect-of-avocado-soybean-unsaponifiables-asu-on-osseointegration-in-rats-with-experimental-arthritis
#12
Luiz Guilherme Freitas de Paula, Guilherme José Pimentel Lopes de Oliveira, Felipe Eduardo Pinotti, Bruna Biagioni Grecchi, Sabrina Garcia de Aquino, Rosemary Adriana Chiérici Marcantonio
PURPOSE: To evaluate the influence of the use of avocado/soybean unsaponifiables (ASU) on osseointegration of implants in animals with experimental arthritis. MATERIALS AND METHODS: One hundred twenty rats were randomly divided into four groups: CTR, healthy animals and saline solution administration; ASU, healthy animals and ASU administration; ART, arthritic animals and saline solution administration; and ART/ASU, arthritic animals and ASU administration. The solutions were administered daily by gavage, beginning 7 days before the surgical procedures until the completion of the experimental period (15, 30, and 60 days after the placement of the implants in the tibia)...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763497/additively-manufactured-titanium-and-cobalt-chromium-implant-frameworks-fit-and-effect-of-ceramic-veneering
#13
Per Svanborg, Alf Eliasson, Victoria Stenport
PURPOSE: The purpose of this study was to evaluate the fit of additively manufactured cobalt-chromium and titanium and CNC-milled titanium frameworks before and after ceramic veneering. MATERIALS AND METHODS: Ten stone casts simulating an edentulous maxilla provided with six abutment analogs were produced. For each stone cast, one additively manufactured cobalt-chromium framework (AM CoCr) and one titanium framework (AM Ti) were fabricated. The fit was analyzed with a coordinate measuring machine in three dimensions (x, y, and z axes) using best-fit virtual matching of center point coordinates, before and after ceramic veneering...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763496/comparison-of-marginal-bone-loss-between-implants-with-internal-and-external-connections-a-systematic-review
#14
Natalia Palacios-Garzón, Elisabeth Mauri-Obradors, Xavier Roselló-LLabrés, Albert Estrugo-Devesa, Enric Jané-Salas, José López-López
PURPOSE: The objective of this systematic review was to compare the loss of marginal bone between implants with internal and external connections by analyzing results reported in studies published after 2010. MATERIALS AND METHODS: A literature search in MEDLINE with the keywords "dental implant connections, external internal implant connection, bone loss implant designs, internal and external connection implant studies in humans" was conducted. Clinical trials on human beings, comparing both connections and published in English, from 2010 to 2016 were selected...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763495/early-response-of-fibroblasts-and-epithelial-cells-to-pink-shaded-anodized-dental-implant-abutments-an-in-vitro-study
#15
Federico Mussano, Tullio Genova, Marco Laurenti, Elisa Zicola, Luca Munaron, Paola Rivolo, Pietro Mandracci, Stefano Carossa
PURPOSE: This research aimed to assess whether pink-shaded anodized surfaces could enhance the adhesion of soft tissue cells compared with untreated machined titanium surfaces. MATERIALS AND METHODS: Two types of Ti-Al-V titanium samples were prepared: machined titanium (Ti) and anodized titanium (AnoTi). The microstructure was studied by means of a scanning electron microscope. X-ray photoelectron spectroscopy (XPS) was carried out as well. The wetting properties were investigated by the sessile drop technique with water and diiodomethane...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763494/expression-levels-of-semaphorins-3a-3b-4a-and-4d-on-human-peri-implantitis
#16
Marta Ferreira Bastos, Leonardo de Franco, Andressa Cristina Garcia Tebar, Gabriela Giro, Jamil Awad Shibli
PURPOSE: To evaluate the gene expression levels of semaphorins 3A, 3B, 4A, and 4D in both healthy and diseased implants. MATERIALS AND METHODS: Subjects with peri-implantitis presented clinical attachment loss, probing depth ≥ 5 mm, bleeding on probing and/or suppuration, and radiographic bone loss > 4 mm. Peri-implant tissue biopsy specimens were sampled for analysis of the mRNA expression levels for semaphorins 3A, 3B, 4A, and 4D. A real-time polymerase chain reaction was performed, and the gene expression levels of semaphorins in relation to the housekeeping gene were analyzed by using the nonparametric Mann-Whitney test (P < ...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29763493/clinical-outcomes-of-vertical-distraction-osteogenesis-for-dental-implantation-a-systematic-review-and-meta-analysis
#17
Kai Zhao, Feng Wang, Wei Huang, Yiqun Wu
PURPOSE: The aim of this study was to evaluate the clinical outcomes of vertical distraction osteogenesis (VDO) for patients with vertically deficient alveolar ridges in terms of (1) the cumulative implant survival rate, (2) bone gain, (3) bone resorption before and after implant insertion, and (4) complications. MATERIALS AND METHODS: An electronic search was conducted via MEDLINE (PubMed), EMBASE, and the Cochrane Library, complemented by manual searches, to identify eligible clinical studies of VDO before dental implantation...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29543929/clinical-and-radiographic-assessment-of-three-implant-supported-fixed-prosthesis-rehabilitation-of-the-edentulous-mandible-immediate-versus-delayed-loading
#18
Bruno Tochetto Primo, Leonardo Marcos Mezzari, Luís Carlos da Fontoura Frasca, Raquel Linderman, Elken Gomes Rivaldo
PURPOSE: To evaluate and compare the clinical and radiographic outcomes of mandibular rehabilitation with fixed prostheses on three implants with immediate versus delayed loading. MATERIALS AND METHODS: The sample comprised 21 patients who underwent treatment with immediate loading and 23 who received delayed loading. All had worn their prostheses for at least 18 months. Radiographic evaluation of bone loss was carried out in Adobe Photoshop CS5 by a single calibrated examiner using digitized panoramic radiographs...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29543928/injectable-bone-substitute-material-on-the-basis-of-%C3%AE-tcp-and-hyaluronan-achieves-complete-bone-regeneration-while-undergoing-nearly-complete-degradation
#19
Jonas Lorenz, Mike Barbeck, Charles James Kirkpatrick, Robert Sader, Henriette Lerner, Shahram Ghanaati
PURPOSE: In this prospective study, the regenerative potential and pathways of a new injectable bone substitute (IBS) material composed of beta-tricalcium phosphate (β-TCP) and hyaluronan were investigated for its application in alveolar bone regeneration within extraction sockets. MATERIALS AND METHODS: The bone substitute material was implanted in 44 extraction sockets after removal of teeth not worth preserving in the maxillary and mandibular arches of 21 patients...
May 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29543927/vertical-bone-augmentation-using-deproteinized-bovine-bone-mineral-absorbable-collagen-sponge-and-recombinant-human-bone-morphogenetic-protein-2-an-in-vivo-study-in-rabbits
#20
Yeon Jung Kim, Rafael Scaf de Molon, Fausto Rioiti Horiguti, Guilherme Piragine Contador, Marco Antonio Coelho, Vinicius Ibiapina Mascarenhas, Ana Paula de Souza Faloni, Joni Augusto Cirelli, Wilson Roberto Sendyk
PURPOSE: The objective of this investigation was to assess vertical bone augmentation using deproteinized bovine bone mineral (DBBM) infused or not with recombinant human bone morphogenetic protein (rhBMP-2) in rabbit tibiae. MATERIALS AND METHODS: A total of 18 female rabbits (New Zealand) received two blocks of DBBM in each tibia. The DBBM blocks were randomly assigned into four experimental groups: DBBM (only the bone graft); DBBM associated with absorbable collagen sponge (ACS); DBBM plus rhBMP-2 (1...
May 2018: International Journal of Oral & Maxillofacial Implants
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