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Clinical Oral Implants Research

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https://www.readbyqxmd.com/read/28432698/quantitative-evaluation-of-metal-artifacts-using-different-cbct-devices-high-density-materials-and-field-of-views
#1
Marina Codari, Karla de Faria Vasconcelos, Laura Ferreira Pinheiro Nicolielo, Francisco Haiter Neto, Reinhilde Jacobs
OBJECTIVE: To objectively compare the influence of different cone-beam computed tomography (CBCT) devices, high-density materials and field of views (FOVs) on metal artifact expression. MATERIAL AND METHODS: For this in vitro study, three customized acrylic resin phantoms containing high-density materials cylinders: titanium, copper-aluminum alloy and amalgam were scanned on three CBCT devices using high-resolution protocols, same voxel size (0.2 mm) and different FOVs...
April 22, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28422326/alveolar-ridge-dimensional-changes-following-ridge-preservation-procedure-with-novel-devices-part-3-histological-analysis-in-non-human-primate-model
#2
Yingying Su, Jianxia Tang, Seiko Min, Lijia Guo, Yitong Liu, Yilin Xie, Jimin Xiong, Songlin Wang, Mauricio G Araújo, Homayoun H Zadeh, Yi Liu
OBJECTIVES: This study sought to investigate the histological changes following tooth extraction, ridge preservation and augmentation, using novel devices designed to obturate the oral orifice of extraction sockets (SocketKAP™) and provide structural support for sockets with defective bony walls (SocketKAGE™) in a non-human primate model. MATERIAL AND METHODS: Six Macaca fascicularis were imaged by cone beam computed tomography to register their preoperative alveolar bone...
April 19, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28407306/the-influence-of-the-emergence-profile-on-the-amount-of-undetected-cement-excess-after-delivery-of-cement-retained-implant-reconstructions
#3
M Sancho-Puchades, D Crameri, M Özcan, I Sailer, R E Jung, C H F Hämmerle, D S Thoma
OBJECTIVE: To test whether or not one of two emergence profile designs (concave or convex) is superior to the other in terms of remaining cement following cementation of reconstructions on individualized abutments and careful cement removal. MATERIALS AND METHODS: A central incisor with a single implant-supported reconstruction was selected as a model. Six types of abutments (n = 10) with two different emergence profile designs (concave (CC) and convex (CV)) and three crown-abutment margin depths (epimucosal, 1...
April 13, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28397298/micromorphological-differences-of-the-implant-abutment-junction-and-in%C3%A2-vitro-load-testing-for-three-different-titanium-abutments-on-straumann-tissue-level-implants
#4
N Mattheos, C Larsson, L Ma, G Fokas, V Chronopoulos, M Janda
BACKGROUND: The aim of this study was to investigate the micromorphological differences among three commercially available titanium abutments on Straumann implants. Furthermore, the possible impact of functional loading on the micromorphology and potential complications was investigated with the use of in vitro testing. MATERIAL AND METHODS: Three groups of Titanium abutments (A: Straumann Variobase n = 5, B: EBI best Duo n = 5, and C: Implant Direct n = 5) were torqued on Straumann RN implants, as according to each of the manufacturer's instructions...
April 11, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28391648/prevalence-of-proximal-contact-loss-between-implant-supported-fixed-prostheses-and-adjacent-natural-teeth-and-its-associated-factors-a-7-year-prospective-study
#5
Nan-Sim Pang, Chang-Sup Suh, Kee-Deog Kim, Wonse Park, Bock-Young Jung
OBJECTIVES: The aim was to analyze the prevalence rate of proximal contact loss (PCL) between implant-fixed prostheses (IFPs) and adjacent teeth and investigate the associated factors. MATERIAL AND METHODS: One hundred fifty participants were recruited for this prospective study from January 2009 to December 2014. Two hundred thirty-four IFPs supported by 384 implants for the posterior region were followed up until June 2016. The contact tightness had been recorded using aluminum strips of different thicknesses with a regular interval after delivery...
April 8, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28382633/healing-at-the-interface-between-recipient-sites-and-autologous-block-bone-grafts-affixed-by-either-position-or-lag-screw-methods-a-histomorphometric-study-in-rabbits
#6
Marco Caneva, Daniele Botticelli, Evandro Neto Carneiro Martins, Martina Caneva, Niklaus P Lang, Samuel P Xavier
OBJECTIVE: To compare the sequential healing at the interface gap occurring between autologous bone grafts and recipient sites using two types of fixation techniques. MATERIAL AND METHODS: Twenty-four adult male New Zealand white rabbits were used. Two bone grafts were collected from the calvaria and secured to the lateral aspect of the angle of mandible in each animal. Cortical perforations at the recipient sites were performed. However, no modifications were applied to the graft for its adaptation to the recipient site...
April 5, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28378530/guided-bone-regeneration-with-particulate-vs-block-xenogenic-bone-substitutes-a-pilot-cone-beam-computed-tomographic-investigation
#7
Goran I Benic, Daniel S Thoma, Ronald E Jung, Ignacio M Sanz, Silvan Unger, Antonio Cantalapiedra, Christoph H F Hämmerle
AIM: To test whether an equine bone substitute block used for guided bone regeneration (GBR) of peri-implant defects differs from bovine block or particulate bone substitutes regarding the hard and soft tissue contours of the augmented ridge. MATERIAL & METHODS: Two semi-saddle bone defects were prepared in each side of the mandible of eight dogs, and one titanium implant was inserted into every defect. The defects were randomly allocated to receive one of the following treatments: bone augmentation by GBR using (1) particulate deproteinized bovine bone mineral (DBBM) + a collagen membrane (CM), (2) block DBBM + CM, (3) equine bone substitute block + CM, and (4) empty controls...
April 4, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28370489/volumetric-changes-and-peri-implant-health-at-implant-sites-with-or-without-soft-tissue-grafting-in-the-esthetic-zone-a-retrospective-case-control-study-with-a-5-year-follow-up
#8
Stefan P Bienz, Ronald E Jung, Vitor M Sapata, Christoph H F Hämmerle, Jürg Hüsler, Daniel S Thoma
OBJECTIVES: To evaluate the volumetric changes and peri-implant health at implant sites with and without previous soft tissue grafting over a 5-year observation period. MATERIAL AND METHODS: In 18 partially edentulous patients, dental implants were placed in the esthetic zone (15-25) with simultaneous guided bone regeneration, followed by submerged healing. During the healing phase, eight patients (test) received a subepithelial connective tissue graft, whereas 10 patients (control) did not receive any soft tissue augmentation...
March 29, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28370406/6-mm-long-implants-loaded-with-fiber-reinforced-composite-resin-bonded-fixed-prostheses-frcrbfdps-a-5-year-prospective-study
#9
Fabio Rossi, Niklaus P Lang, Emanuele Ricci, Lorenzo Ferraioli, Claudio Marchetti, Daniele Botticelli
AIM: To evaluate the clinical and radiographic outcomes and the survival rates of fiber-reinforced composite resin-bonded fixed prostheses (FRCRBFDPs) placed in the posterior area supported by two short (6 mm) implants. MATERIALS AND METHODS: Twenty consecutive patients received 40 SLActive 6-mm-long implants with a diameter of 4.1 mm (n = 29) or 4.8 mm (n = 11). Insertion torques and RFA (Resonance Frequency Analysis) were measured at implant installation...
March 28, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28370361/randomized-clinical-trial-of-ridge-preservation-using-porcine-bone-cross-linked-collagen-vs-bovine-bone-non-cross-linked-collagen-cone-beam-computed-tomographic-analysis
#10
Hyun-Chang Lim, Ui-Won Jung, Hoon You, Jung-Seok Lee
PURPOSE: The aim of this study was to radiographically compare horizontal and vertical alterations of the alveolar ridge after ridge preservation using different combinations of biomaterials. MATERIALS AND METHODS: The patients were randomly assigned into two groups: (a) the test group, which received collagenated porcine bone plus cross-linked collagen membrane (n = 15), and (b) the control group, which received collagenated bovine bone plus non-cross-linked collagen membrane (n = 15)...
March 28, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28349601/guided-bone-regeneration-of-non-contained-mandibular-buccal-bone-defects-using-deproteinized-bovine-bone-mineral-and-a-collagen-membrane-an-experimental-in%C3%A2-vivo-investigation
#11
Mariano Sanz, Luca Ferrantino, Fabio Vignoletti, Massimo de Sanctis, Tord Berglundh
AIM: The aim of this pre-clinical in vivo study was to analyse different stages of wound healing after guided bone regeneration in non-contained mandibular buccal bone defects. MATERIALS AND METHODS: Eighteen female beagle dogs, between 1.5 and 2 years old, were used. Buccal bone defects were created in the mandible following extraction of the mesial roots of M1, P4, the distal root of P3 and booth roots of P2. Augmentation procedures of the healed defects were performed 3 months later using a bone replacement graft (T1), an absorbable collagen membrane (T2) or a combination of both procedures (T3)...
March 27, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28333394/socket-shield-technique-for-immediate-implant-placement-clinical-radiographic-and-volumetric-data-after-5%C3%A2-years
#12
Daniel Bäumer, Otto Zuhr, Stephan Rebele, Markus Hürzeler
OBJECTIVES: Implant placement immediately after tooth extraction is often accompanied by resorption of surrounding tissues. A clinical technique was developed where the buccal portion of the root is retained to preserve the periodontal ligament and bundle bone. This technique is based on animal studies showing the potential to preserve the facial tissues utilizing this approach. The purpose of this study was to gain more insight regarding the safety of the technique with regard to biological and implant-related long-term complications and to observe the clinical appearance of the peri-implant tissues...
March 23, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28276147/implant-guided-supracrestal-alveolar-bone-growth-using-scaffolds-bmp-2-and-novel-scaffold-retaining-device
#13
Bo Wen, David Shafer, Peter Schleier, David Pendrys, Liisa Kuhn, Martin Freilich
OBJECTIVE: To evaluate the efficacy of various scaffold systems and a Ti scaffold-retaining device with and without non-glycosylated rhBMP-2 (BMP-2) for increasing the vertical alveolar bone growth in the intra-oral mini-pig model. METHODS: Forty-eight Straumann Bone Level implants with hydrophilic (SLActive) surfaces were partially embedded in mandibles of 12 adult mini-pigs with the shoulder of the implant located 3 mm above the bone crest. Twenty-four implants were placed in conjunction with BMP-2 (50 μg) incorporated within resorbable scaffolds...
March 9, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28251678/costs-and-clinical-outcomes-of-implant-placement-during-ablative-surgery-and-postponed-implant-placement-in-curative-oral-oncology-a-five-year-retrospective-cohort-study
#14
Jan-Willem G H Wetzels, Gert J Meijer, Ron Koole, Eddy M Adang, Matthias A W Merkx, Caroline M Speksnijder
OBJECTIVES: The aim of this study was to compare costs and clinical outcomes of two protocols for implant placement in edentulous oral cancer patients: implant placement during ablative surgery and postponed implant placement. MATERIAL AND METHODS: All edentulous patients who underwent curative tumor surgery between 2007 and 2009 at the Radboud university medical center (Radboudumc) and UMC Utrecht, both in the Netherlands, were included retrospectively. At the Radboudumc, 79 of 98 patients received implants during ablative surgery...
March 2, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28213949/peri-implant-bone-remodeling-at-the-interface-of-three-different-implant-types-a-histomorphometric-study-in-mini-pigs
#15
Wenjuan Zhou, Sonja Kuderer, Zhonghao Liu, Christian Ulm, Xiaohui Rausch-Fan, Stefan Tangl
OBJECTIVES: The aim of this study was to perform a histomorphometric evaluation of the healing characteristics and jawbone remodeling processes in the peri-implant bone tissue of three commonly used implant surfaces, during the early weeks of osseointegration. MATERIAL AND METHODS: Dental implants with three different surfaces (anodically modified, hydroxyapatite (HA)-coated and machined) were inserted into the mandibular side-tooth region of twelve adult mini-pigs...
February 18, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28191679/a-systematic-review-of-the-survival-and-complication-rates-of-resin-bonded-fixed-dental-prostheses-after-a-mean-observation-period-of-at-least-5%C3%A2-years
#16
REVIEW
Daniel S Thoma, Irena Sailer, Alexis Ioannidis, Marcel Zwahlen, Nikolay Makarov, Bjarni E Pjetursson
OBJECTIVES: The objective of this systematic review was to assess the 5-year and 10-year survival of resin-bonded fixed dental prostheses (RBBs) and to describe the incidence of technical and biological complications. MATERIALS AND METHODS: An electronic MEDLINE search complemented by manual searching was conducted to identify prospective and retrospective cohort studies and case series on RBBs with a mean follow-up time of at least 5 years. Patients had to have been examined clinically at the follow-up visit...
February 13, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28191678/retention-of-implant-supported-overdentures-at-different-implant-angulations-comparing-locator-and-ball-attachments
#17
Nazia Sultana, David W Bartlett, Mahmood Suleiman
OBJECTIVES: To assess the effect of implant angulation on the retention of two different attachment systems for implant-supported overdentures after a simulated fatigue period of 5.5 years. MATERIAL AND METHODS: Two test set-ups were constructed. A two-implant mandibular implant-supported overdenture design was simulated using acrylic resin blocks to support implant replicas (Model 1 and Model 2). The replicas were set up in the canine regions (22-mm inter-implant distance)...
February 13, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28165165/recombinant-bone-morphogenetic-protein-2-and-platelet-derived-growth-factor-bb-for-localized-bone-regeneration-histologic-and-radiographic-outcomes-of-a-rabbit-study
#18
Daniel S Thoma, Hyun-Chang Lim, Vitor M Sapata, Sora R Yoon, Ronald E Jung, Ui-Won Jung
OBJECTIVES: Improvement in localized bone regeneration is needed to avoid the use of autogenous tissue. For that purpose, the use biologic mediators was proposed. The aim was to test whether or not one of two biologic mediators, recombinant human bone morphogenetic protein-2 (rhBMP-2) or recombinant platelet-derived growth factor (rhPDGF-BB), is superior to the other and to control groups for localized bone regeneration. MATERIALS AND METHODS: Four cylinders (height: 5 mm; diameter: 7 mm) were screwed on the parietal and frontal bones at the cranium in 12 rabbits...
February 6, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28165160/peri-implant-bleeding-on-probing-a-cross-sectional-multilevel-analysis-of-associated-factors
#19
Mauro Merli, Francesco Bernardelli, Erica Giulianelli, Ivano Toselli, Giorgia Mariotti, Michele Nieri
OBJECTIVES: The objective was to evaluate the association between peri-implant bleeding on probing (BoP) and probing depth. Other factors regarding patients, implants, and sites were taken into consideration. MATERIAL AND METHODS: Consecutive adult patients with ≥1 dental implant were eligible. Two calibrated operators examined the patients. BoP was the outcome variable. The effects of patient, implant and site factors on BoP were assessed using a 3-level logistic model...
February 6, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/27016157/the-effect-of-one-time-abutment-placement-on-interproximal-bone-levels-and-peri-implant-soft-tissues-a-prospective-randomized-clinical-trial
#20
Ana Molina, Ignacio Sanz-Sánchez, Conchita Martín, Juan Blanco, Mariano Sanz
OBJECTIVE: To compare the effect of placing the definitive abutment at the time of implant placement versus at a later stage, on the soft and hard tissue changes around dental implants. MATERIAL AND METHODS: Platform-switched implants were placed in the posterior maxilla or mandible of partial edentulous patients and they were randomized to receive the definitive abutment at the moment of implant placement, or 6-12 weeks later. Final prostheses were delivered 2-4 weeks later...
April 2017: Clinical Oral Implants Research
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