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Clinical Oral Implants Research

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https://www.readbyqxmd.com/read/30168218/implant-associated-gene-expression-in-the-jaw-bone-of-smokers-and-nonsmokers-a-human-study-using-quantitative-qpcr
#1
Shariel Sayardoust, Omar Omar, Ola Norderyd, Peter Thomsen
OBJECTIVES: This study aimed to compare the molecular events in implant-adherent cells and in peri-implant bone during the osseointegration of machined and oxidized titanium implants in smokers and nonsmokers. MATERIALS AND METHODS: Twenty-four smokers and 24 nonsmokers each received machined and anodically oxidized mini-implants. The mini-implants and the surrounding bone were retrieved after 1, 7, and 28 days, for gene expression analysis of selected factors using quantitative polymerase chain reaction (qPCR)...
August 30, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/30168207/precision-of-digital-implant-models-compared-to-conventional-implant-models-for-posterior-single-implant-crowns-a-within-subject-comparison
#2
Sven Mühlemann, Elena A Greter, Ji-Man Park, Christoph H F Hämmerle, Daniel S Thoma
OBJECTIVE: To calculate the precision of the implant analog position in digital models generated from different computer-assisted design and computer-assisted manufacturing (CAD-CAM) systems compared to gypsum models acquired from conventional implant impressions. MATERIALS AND METHODS: In five patients in need of a single implant crown, a within-subject comparison was performed applying four different manufacturing processes for the implant model. Each implant was scanned with three different intraoral scanners: iTero Cadent (ITE), Lava True Definition (LTD), and Trios 3Shape (TRI)...
August 30, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/30144159/patient-reported-outcome-measures-proms-of-posterior-single-implant-crowns-using-digital-workflows-a-randomized-controlled-trial-with-a-three-year-follow-up
#3
Tim Joda, Marco Ferrari, Urs Bragger, Nicola U Zitzmann
OBJECTIVES: The aim of this RCT was to analyze Patient Reported Outcome Measures (PROMs) of implant crowns processed in complete digital workflows (test) and combined analog-digital workflows (control) with a three-year follow-up. This is a second reporting from the same trial with sample size calculation based on time efficiency. MATERIALS AND METHODS: Twenty participants were selected for single-tooth replacement with screw-retained crowns in posterior sites (Straumann TL Implant System)...
August 24, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/30112833/accuracy-of-cone-beam-computed-tomography-dental-magnetic-resonance-imaging-and-intraoral-radiography-for-detecting-peri-implant-bone-defects-at-single-zirconia-implants-an-in-vitro-study
#4
Tim Hilgenfeld, Alexander Juerchott, Ulrich Karl Deisenhofer, Johannes Krisam, Peter Rammelsberg, Sabine Heiland, Martin Bendszus, Franz Sebastian Schwindling
OBJECTIVES: To evaluate the diagnostic value of cone-beam computed tomography (CBCT), intraoral radiography (IR), and dental magnetic resonance imaging (dMRI) for detecting and classifying peri-implant bone defects at zirconia implants. MATERIALS AND METHODS: Forty-eight zirconia implants were inserted in bovine ribs, 24 of which had standardized defects (1-wall, 2-wall, 3-wall, 4-wall) in two sizes (1 and 3 mm). CBCT, IR, and dMRI were performed and analyzed twice by four readers unaware of the nature of the defects...
August 15, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/30043486/risk-factor-model-of-mechanical-complications-in-implant-supported-fixed-complete-dentures-a-prospective-cohort-study
#5
Maria Paula L Coltro, Ahmet Ozkomur, Eduardo A Villarinho, Eduardo R Teixeira, Alvaro Vigo, Rosemary S A Shinkai
OBJECTIVES: This prospective cohort study estimated the effect of technical and clinical factors on mechanical complications in implant-supported fixed complete dentures (IFCDs). The patient's perception of the impact of oral rehabilitation on quality of life was assessed. MATERIAL AND METHODS: A non-probabilistic sample consisted of 88 consecutive patients treated with 94 screw-retained, metal-acrylic IFCDs. Data collection included sociodemographic variables, presence and intensity of bruxism, maximal occlusal force, opposing arch, design of the metallic framework, distribution of occlusal contacts, and quality of life (OHIP-14)...
July 24, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/30043456/implant-survival-rates-and-biologic-complications-with-implant-supported-fixed-complete-dental-prostheses-a-retrospective-study-with-up-to-12-year-follow-up
#6
Panos Papaspyridakos, Thaisa Barizan Bordin, Yong-Jeong Kim, Catherine DeFuria, Sarah E Pagni, Konstantinos Chochlidakis, Eduardo Rolim Teixeira, Hans-Peter Weber
OBJECTIVES: To assess the rate of biologic complications and implant survival in edentulous patients treated with implant-supported fixed complete dental prostheses (IFCDPs) after a mean observation period of 5.2 years (range: 1-12 years). MATERIALS AND METHODS: A single-visit clinical and radiographic examination was performed to assess types and rates of biologic complications with ceramic IFCDPs (Group 1) and metal-resin IFCDPs (Group 2). RESULTS: Of 457 rough surface dental implants supporting 71 IFCDPs (52 patients), six had failed, yielding an implant survival rate of 98...
August 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/30009476/peri-implant-tissue-healing-at-implants-with-different-designs-and-placement-protocols-an-experimental-study-in-dogs
#7
Monika Oskarsson, Motohiro Otsuki, Maria Welander, Ingemar Abrahamsson
OBJECTIVES: To compare the peri-implant tissue response to subcrestal or crestal placement of implants with or without "platform-switched" implant/abutment connections. MATERIAL AND METHODS: On each side of the mandible in six Labrador dogs, two "platform-switched" (PS) implants and two implants with matching implant/abutment diameters (PM) were placed in a crestal or a 1.5 mm subcrestal position. Sulcus formers/abutments were connected, baseline radiographs obtained and the distance between the abutment-fixture junction (A/F) and the marginal bone level (B) was determined...
August 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/30003598/marginal-bone-level-and-survival-of-short-and-standard-length-implants-after-3-years-an-open-multi-center-randomized-controlled-clinical-trial
#8
Homayoun H Zadeh, Felix Guljé, Paul J Palmer, Ingemar Abrahamsson, Stephen Chen, Ramin Mahallati, Clark M Stanford
OBJECTIVES: The present multi-center randomized controlled clinical trial sought to compare the marginal bone level (MBL) changes and survival of 6- and 11-mm implants. MATERIAL AND METHODS: Ninety-five patients receiving a total of 209 dental implants were enrolled. Subjects were randomly allocated to two cohorts: test (4.0 × 6 mm; N = 108) or control (4.0 × 11 mm; N = 101) implant groups. To be randomized, all edentulous sites were anatomically qualified to receive 11 mm implant...
August 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29952033/profilometric-changes-of-peri-implant-tissues-over-5-years-a-randomized-controlled-trial-comparing-a-one-and-two-piece-implant-system
#9
Vitor Marques Sapata, Ignacio Sanz-Martín, Christoph H F Hämmerle, João B Cesar Neto, Ronald E Jung, Daniel S Thoma
OBJECTIVES: To assess the profilometric changes of the buccal soft tissues between baseline and 5 years of loading using a one- and two-piece dental implant system. MATERIALS AND METHODS: Sixty patients randomly received dental implants of either a two-piece type (BRA) or a one-piece type (STM). Casts were obtained at baseline (after crown insertion), at the 1-year and at the 5-year follow-up. Stereolithography files were obtained from the casts for digital superimposition...
August 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29934956/lateral-alveolar-ridge-augmentation-with-autogenous-block-grafts-fixed-at-a-distance-versus-resorbable-poly-d-l-lactide-foil-fixed-at-a-distance-a-single-blind-randomized-controlled-trial
#10
Andreas Bartols, Sebastian Kasprzyk, Winfried Walther, Michael Korsch
OBJECTIVES: The aim of this study was to compare bone block grafts fixed at a distance (BBG-D) with the SonicWeld Rx shell technique (Poly-D-L-Lactide foil fixed at a distance, augmented with autogenous and deproteinized bovine bone particles (SWST)) for lateral alveolar ridge augmentation. METHODS: In this single-blinded, randomized, controlled trial, 30 patients with a bucco-palatal bone width of ≤3 mm were randomized into the treatment groups: "BBG-D" and "SWST"...
August 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29926977/accuracy-of-printed-casts-generated-from-digital-implant-impressions-versus-stone-casts-from-conventional-implant-impressions-a-comparative-in-vitro-study
#11
Bahaa Alshawaf, Hans-Peter Weber, Matthew Finkelman, Khaled El Rafie, Yukio Kudara, Panos Papaspyridakos
OBJECTIVES: The aim of this in vitro study was to compare the accuracy of printed implant casts from digital impressions with two intra-oral scanners (IOS) to stone casts from conventional impressions. The hypothesis was that printed casts would be more accurate than stone casts from conventional impressions. MATERIALS AND METHODS: A mandibular stone cast with Kennedy class II edentulism was fabricated using two internal connection tissue-level implants at 30 degrees to each other (Replace Select RP, Nobel Biocare) to serve as master...
August 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29920778/masticatory-efficiency-of-implant-supported-removable-partial-dental-prostheses-in-patients-with-free-fibula-flap-reconstructed-mandibles-a-split-mouth-observational-study
#12
Vinay V Kumar, Murali Srinivasan
OBJECTIVES: The aim of this split-mouth study was to evaluate the masticatory efficiency in patients with segmentally reconstructed mandibles using free fibula flaps, with and without stabilizing osteosynthesis material in-situ during implant placement for rehabilitation with implant-supported removable partial dental prostheses (ISRPDPs). METHODS: Ten participants (n = 10; ♀ = 2, ♂ = 8; mean age = 38.1 years) consented to participate in this study...
August 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29876969/reposition-of-the-bone-plate-over-the-antrostomy-in-maxillary-sinus-augmentation-a-histomorphometric-study-in-rabbits
#13
Yuki Omori, Erick Ricardo Silva, Daniele Botticelli, Karol Alí Apaza Alccayhuaman, Niklaus P Lang, Samuel P Xavier
OBJECTIVE: To test if repositioning the bony plate secured with a cyanoacrylate over the antrostomy in maxillary sinus augmentation was superior to covering the antrostomy with a collagen membrane in terms of the bone augmentation area and the bone density. MATERIAL AND METHODS: After the exposure of the nasal bone in eighteen rabbits, a rectangular access window was prepared with a sonic instrument, and the bony plate was removed. A bilateral sinus mucosa elevation was performed, and the space was filled with a resorbable xenograft...
August 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29923628/technical-complications-following-implant-supported-restorative-therapy-performed-in-sweden
#14
Karolina Karlsson, Jan Derks, Jan Håkansson, Jan L Wennström, Margareta Molin Thorén, Max Petzold, Tord Berglundh
OBJECTIVE: The aim of this study was to evaluate the occurrence and consequences of technical complications in implant-supported restorative therapy. MATERIAL & METHODS: The occurrence and consequences of technical complications in implant-supported restorative therapy over a mean follow-up period of 5.3 years were assessed based on documentation in files from 2,666 patients. Risk indicators were identified by the use of survival models, considering repeated events...
June 20, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29907973/biological-effect-of-the-abutment-material-on-the-stability-of-peri-implant-marginal-bone-levels-a-systematic-review-and-meta-analysis
#15
REVIEW
Ignacio Sanz-Sánchez, Ignacio Sanz-Martín, Ana Carrillo de Albornoz, Elena Figuero, Mariano Sanz
OBJECTIVES: The primary aim of this systematic review was to evaluate the available evidence on the effect of the abutment material on the stability and health of the peri-implant hard tissues. METHODS: A protocol was developed to answer the following focused question: "Which is the effect of the abutment material on stability and health of the peri-implant hard tissues?" Randomized controlled trials (RCTs), controlled clinical trials (CCTs) or prospective case series (CS) with at least 6 months of follow-up were included, and meta-analyses were performed to compare abutment materials vs...
June 15, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29876968/dental-implants-placed-in-severely-atrophic-jaws-reconstructed-with-autogenous-calvarium-bovine-bone-mineral-and-collagen-membranes-a-3-to-19-year-retrospective-follow-up-study
#16
Matteo Chiapasco, Grazia Tommasato, David Palombo, Dario Scarnò, Marco Zaniboni, Massimo Del Fabbro
OBJECTIVES: To present the clinical, radiographic, and patient-related outcomes of patients presenting with severely resorbed ridges reconstructed with autogenous calvarial bone blocks and rehabilitated with implant-supported prostheses. MATERIAL AND METHODS: From 1998 to 2014, 72 patients presenting with severe bone defects were reconstructed with autogenous calvarial bone blocks covered with bovine bone mineral granules and collagen membranes. Four to 9 months later, 330 implants were placed and loaded 3-9 months later...
June 7, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29876965/thermal-oxidation-and-hydrofluoric-acid-treatment-on-the-sandblasted-implant-surface-a-histologic-histomorphometric-and-biomechanical-study
#17
Ala Hassan A Qamheya, Volkan Arısan, Zihni Mutlu, Murat Karabaglı, Merva Soluk Tekkeşin, Kamuran Kara, Ayşe Erol, Selim Ersanlı
OBJECTIVES: This study aimed to analyze and compare the topographical, chemical, and osseointegration characteristics of a sandblasted acid-etched surface (SLA group), a sandblasted thermally oxidized surface (SO group), and a surface chemically modified by hydrofluoric (HF) acid (SOF group). MATERIALS AND METHODS: Following the preparation and characterization of the relevant surfaces, 90 implants (30 for each group) were placed on the pelvic bone of six sheep...
June 7, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29855100/influence-of-titanium-base-lithium-disilicate-restoration-and-vertical-soft-tissue-thickness-on-bone-stability-around-triangular-shaped-implants-a-prospective-clinical-trial
#18
Tomas Linkevicius, Rokas Linkevicius, Jonas Alkimavicius, Laura Linkeviciene, Paulius Andrijauskas, Algirdas Puisys
OBJECTIVE: To evaluate how vertical mucosal tissue thickness affects crestal bone stability around triangular-shaped bone-level implants, restored with low profile titanium bases and monolithic lithium disilicate restorations. MATERIAL AND METHODS: Fifty-five bone-level implants of 4.3 mm diameter were evaluated in 55 patients (22 males and 34 females, mean age 48.3 ± 3.4 years) in prospective cohort study. According to vertical mucosal thickness, patients were assigned into three groups: 1 (thin, 2 mm or less), 2 (medium, 2...
May 31, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29926991/evaluation-of-implant-esthetics-using-eight-objective-indices-comparative-analysis-of-reliability-and-validity
#19
Markus Hof, Nabeel Umar, Nikolaus Budas, Rudolf Seemann, Bernhard Pommer, Werner Zechner
OBJECTIVES: The aim of the present study was to give a detailed analysis on eight proposed implant esthetic indices including a total of 48 parameters with respect to validity and reproducibility as well as its correlation to patients' perception of esthetics. MATERIAL AND METHODS: Standardized intraoral photographs of 189 patients with 189 implant-supported crowns and adjacent peri-implant soft tissue in the esthetic zone (central and lateral incisors, canine, first premolar) served as basis for this evaluation...
May 27, 2018: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29806181/immediate-placement-and-provisionalization-of-implants-in-the-aesthetic-zone-with-or-without-a-connective-tissue-graft-a-1-year-randomized-controlled-trial-and-volumetric-study
#20
Wouter G van Nimwegen, Gerry M Raghoebar, Elise G Zuiderveld, Ronald E Jung, Henny J A Meijer, Sven Mühlemann
OBJECTIVE: To volumetrically compare peri-implant mid-facial soft tissue changes in immediately placed and provisionalized implants in the aesthetic zone, with or without a connective tissue graft. MATERIAL AND METHODS: Sixty patients were included. All implants were placed immediately after extraction. After randomization, in one group, a connective tissue graft (test group, n = 30) was inserted at the buccal aspect of the implant. The other group (control group, n = 30) received no connective tissue graft...
May 27, 2018: Clinical Oral Implants Research
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