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https://www.readbyqxmd.com/read/27861653/sinus-floor-elevation-and-augmentation-using-synthetic-nanocrystalline-and-nanoporous-hydroxyapatite-bone-substitute-materials-preliminary-histologic-results
#1
Sofia-Maria Belouka, Frank Peter Strietzel
PURPOSE: To compare the tissue composition of augmented sites after using two different synthetic bone substitute materials, nanocrystalline and nanoporous hydroxyapatite (HA), for sinus floor elevation and augmentation. MATERIALS AND METHODS: Forty-four patients received 88 titanium screw implants (Camlog Promote plus) of 4.3-mm diameter and 11- or 13-mm length, placed simultaneously during sinus floor elevation and augmentation. Nanocrystalline (Ostim) or nanoporous (NanoBone) HA were used exclusively...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27861650/influence-of-four-different-abutment-materials-and-the-adhesive-joint-of-two-piece-abutments-on-cervical-implant-bone-and-soft-tissue
#2
Christian Mehl, Volker Gaβling, Stephan Schultz-Langerhans, Yahya Açil, Telse Bähr, Jörg Wiltfang, Matthias Kern
PURPOSE: The main aim of this study was to evaluate the influence of four different abutment materials and the adhesive joint of two-piece abutments on the cervical implant bone and soft tissue. MATERIALS AND METHODS: Sixty-four titanium implants (Camlog Conelog; 4.3 ± 9 mm) were placed bone level into the edentulous arches of four minipigs. Four different types of abutments were placed at implant exposure: zirconium dioxide, lithium disilicate, and titanium bonded to a titanium luting base with resin cement; one-piece titanium abutments served as the control...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27460679/deviations-of-different-systems-for-guided-implant-surgery
#3
V Laederach, K Mukaddam, M Payer, A Filippi, S Kühl
OBJECTIVES: To compare the deviation of different systems for Guided Implant Surgery (GIS) related to the specific tolerance between drills and sleeves. MATERIAL AND METHODS: Four different systems for GIS and their appropriate sleeves were used: Camlog Guide (CG), Straumann Guided Surgery (SG), SIC Guide (SIG), and NobelGuide (NG). System-appropriate metal sleeves were inserted into plexiglass boxes, and guided drilling procedure was performed (i) holding the drills in the most centric position of the sleeves and (ii) applying forces eccentrically...
July 27, 2016: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/27434650/the-applicability-of-peek-based-abutment-screws
#4
Andreas Dominik Schwitalla, Mohamed Abou-Emara, Tycho Zimmermann, Tobias Spintig, Florian Beuer, Justus Lackmann, Wolf-Dieter Müller
The high-performance polymer PEEK (poly-ether-ether-ketone) is more and more being used in the field of dentistry, mainly for removable and fixed prostheses. In cases of screw-retained implant-supported reconstructions of PEEK, an abutment screw made of PEEK might be advantageous over a conventional metal screw due to its similar elasticity. Also in case of abutment screw fracture, a screw of PEEK could be removed more easily. M1.6-abutment screws of four different PEEK compounds were subjected to tensile tests to set their maximum tensile strengths in relation to an equivalent stress of 186MPa, which is aused by a tightening torque of 15Ncm...
October 2016: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/26757337/is-there-a-correlation-between-tensile-strength-and-retrievability-of-cemented-implant-retained-crowns-using-artificial-aging
#5
Christian Mehl, Shurouk Ali, Shadi El Bahra, Sönke Harder, Oliver Vollrath, Matthias Kern
PURPOSE: The main goal of this in-vitro study was to evaluate whether tensile strength and retrievability of cemented implant-retained crowns correlate when using artificial aging. MATERIALS AND METHODS: A total of 128 crowns were fabricated from a cobalt-chromium alloy for 128 tapered titanium abutments (6 degrees taper, 4.3 mm diameter, 4 mm length, Camlog). The crowns were cemented with glass-ionomer (Ketac Cem, 3M) or resin cements (Multilink Implant, Telio CS Cem [Ivoclar Vivadent], Retrieve [Parkell])...
January 2016: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/26748679/loading-protocols-and-implant-supported-restorations-proposed-for-the-rehabilitation-of-partially-and-fully-edentulous-jaws-camlog-foundation-consensus-report
#6
REVIEW
Frank Schwarz, Ignacio Sanz-Martín, Jaana-Sophia Kern, Thomas Taylor, Alex Schaer, Stefan Wolfart, Mariano Sanz
OBJECTIVES: The aim of this consensus meeting was to assess whether immediate loading protocols achieve comparable clinical outcomes when compared to conventional loading protocols depending on the type of prosthetic restoration. In addition post-loading implant loss for implant supported prostheses in edentulous jaws was analyzed regarding a potential impact of implant location (maxilla vs. mandible), implant number per patient, type of prosthesis (removable vs. fixed), and type of attachment system (screw-retained, ball vs...
August 2016: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/25882956/-application-of-spark-erosion-technology-in-manufacture-of-implant-prosthesis
#7
H Y Cui, P DI, J H Li, Y Lin, R R Liu
OBJECTIVE: To evaluate the influence of the implant-supported porcelain bridges made from non-precious metals using spark erosion techniques, and to discuss the feasibility and details of making the implant restoration by spark erosion technique. METHODS: The study included 12 patients (9 males and 3 females) with 92 units implant-supported non-precious porcelain bridge from Sep. 2011 to Feb. 2013. All the patients received implant treatment in Department of Oral Implantology, Peking University School and Hospital of Stomatology...
April 18, 2015: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/24634906/computer-assisted-flapless-implant-surgery-in-edentulous-elderly-patients-a-2-year-follow-up
#8
Vincenzo Mirisola di Torresanto, Iva Milinkovic, Ferruccio Torsello, Luca Cordaro
OBJECTIVE: The rehabilitation of edentulous mandibles with implant-supported overdentures is a state-of-the-art contemporary implant treatment. Computer-assisted flapless surgery is associated with decreased chairside treatment time, as well as significant reduction in patient postoperative morbidity and discomfort. The aim of this study was to evaluate the protocol of computer-guided surgery in the treatment of edentulous mandibles with overdentures supported by four intraforaminal implants and retained by Locator® attachments in elderly patients, both from a clinician's and a patient's perspective, as well as to assess the stability of the results in a 2-year period...
May 2014: Quintessence International
https://www.readbyqxmd.com/read/24182597/a-histomorphometric-and-micro-computed-tomography-study-of-bone-regeneration-in-the-maxillary-sinus-comparing-biphasic-calcium-phosphate-and-deproteinized-cancellous-bovine-bone-in-a-human-split-mouth-model
#9
COMPARATIVE STUDY
Gert L de Lange, Janice R Overman, Elisabet Farré-Guasch, Clara M Korstjens, Bastiaan Hartman, Geerling E J Langenbach, Marion A Van Duin, Jenneke Klein-Nulend
OBJECTIVE: The gain of mineralized bone was compared between deproteinized bovine bone allograft (DBA) and biphasic calcium phosphate (BCP) for dental implant placement. STUDY DESIGN: Five patients with atrophic maxillae underwent bilateral sinus elevation with DBA (Bio-Oss) and BCP (Straumann BoneCeramic). After 3 to 8 months, 32 Camlog implants were placed, and biopsies were retrieved. Bone and graft volume, degree of bone mineralization, and graft degradation gradient were determined using micro-computed tomography, and bone formation and resorption parameters were measured using histomorphometry...
January 2014: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/24147913/impact-of-implant-abutment-connection-positioning-of-the-machined-collar-microgap-and-platform-switching-on-crestal-bone-level-changes-camlog-foundation-consensus-report
#10
Frank Schwarz, Gil Alcoforado, Katja Nelson, Alex Schaer, Thomas Taylor, Florian Beuer, Frank Peter Strietzel
OBJECTIVES: The aim of this consensus meeting was to assess the impact of implant-abutment connection, positioning of the machined collar/microgap, and platform switching on crestal bone level changes. MATERIALS AND METHODS: Two comprehensive systematic reviews were prepared in advance of the meeting. Consensus statements, practical recommendations, and implications for future research were based on within group as well as plenary scrutinization and discussions of these systematic reviews...
November 2014: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/23915027/influence-of-cement-film-thickness-on-the-retention-of-implant-retained-crowns
#11
Christian Mehl, Sönke Harder, Martin Steiner, Oliver Vollrath, Matthias Kern
PURPOSE: The main goal of this study was to establish a new, high precision procedure to evaluate the influence of cement film thickness on the retention of cemented implant-retained crowns. MATERIALS AND METHODS: Ninety-six tapered titanium abutments (6° taper, 4.3 mm diameter, Camlog) were shortened to 4 mm. Computer-aided design was used to design the crowns, and selective laser sintering, using a cobalt-chromium alloy, was used to produce the crowns. This method used a focused high-energy laser beam to fuse a localized region of metal powder to build up the crowns gradually...
December 2013: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/23422604/macro-design-effects-on-stress-distribution-around-implants-a-photoelastic-stress-analysis
#12
COMPARATIVE STUDY
Serhat Emre Ozkir, Hakan Terzioglu
OBJECTIVES: Biomechanics is one of the main factors for achieving long-term success of implant supported prostheses. Long-term failures mostly depend on biomechanical complications. It is important to distinguish the effects of macro design of the implants. MATERIALS AND METHODS: In this study, the photoelastic response of four different types of implants that were inserted with different angulations were comparatively analyzed. The implant types investigated were screw cylinder (ITI, Straumann AG, Basel, Switzerland), stepped cylinder (Frialit2, Friadent GmbH, Manheim, Germany), root form (Camlog Rootline, Alatatec, Wilshelm, Germany), and cylindrical implant, with micro-threads on the implant neck (Astra, AstraTech, Mölndal, Sweden)...
September 2012: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/23045362/non-linear-3d-evaluation-of-different-oral-implant-abutment-connections
#13
COMPARATIVE STUDY
P Streckbein, R G Streckbein, J F Wilbrand, C Y Malik, H Schaaf, H P Howaldt, M Flach
Micro-gaps and osseous overload in the implant-abutment connection are the most common causes of peri-implant bone resorption and implant failure. These undesirable events can be visualized on standardized three-dimensional finite element models and by radiographic methods. The present study investigated the influence of 7 available implant systems (Ankylos, Astra, Bego, Brånemark, Camlog, Straumann, and Xive) with different implant-abutment connections on bone overload and the appearance of micro-gaps in vitro...
December 2012: Journal of Dental Research
https://www.readbyqxmd.com/read/22524429/impact-of-vertical-loading-on-the-implant-bone-interface
#14
COMPARATIVE STUDY
Christian Mehl, Stephan T Becker, Yahya Acil, Sönke Harder, Jörg Wiltfang, Arthur A Dabbagh-Afrouz, Wiebke de Buhr, Matthias Kern
OBJECTIVES: The main aim of this study was to evaluate the impact of vertical loading occurring during removal of cemented restorations on the implant-bone interface. METHODS: Thirty-six titanium implants (Camlog 4.3 × 9 mm) were placed 1 mm supraosseous in the frontal skull of four minipigs. After a 13 week healing period the implants were exposed and the implant stability was measured. Three implants per minipig were vertically loaded using 20 or 100 impulses, respectively with an 18 Ns impulse imitating a crown removal...
August 2013: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/22167438/retrospective-clinical-evaluation-of-an-internal-tube-in-tube-dental-implant-after-4-years-with-special-emphasis-on-peri-implant-bone-resorption
#15
Bilal Al-Nawas, Peer W Kämmerer, Thomas Morbach, Friederike Ophoven, Wilfried Wagner
PURPOSE: A clinical evaluation of the long-term survival rate of three subtypes of a dental tube-in-tube implant with special emphasis on peri-implant bone resorption was conducted and is presented here. MATERIALS AND METHODS: A retrospective follow-up examination of patients treated with tube-in-tube implants between August 2001 and August 2005 was conducted. For patients available for clinical recall, success criteria according to Albrektsson and Buser were evaluated...
November 2011: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/22092574/retrospective-analysis-of-survival-rates-and-marginal-bone-loss-on-short-implants-in-the-mandible
#16
Florian G Draenert, Keyvan Sagheb, Katharina Baumgardt, Peer W Kämmerer
OBJECTIVES: Short implants have become an interesting alternative to bone augmentation in dental implantology. Design of shorter implants and longer surveillance times are a current research issue. The goal of this study was to show the survival rates of short implants below 9 mm in the partly edentulous mandibular premolar and molar regions with fixed prosthetics. Marginal vertical and 2D bone loss was evaluated additionally. Different implant designs are orientationally evaluated. MATERIAL AND METHODS: A total of 247 dental implants with fixed prosthetics (crowns and bridges) in the premolar and molar region of the mandible were evaluated; 47 implants were 9 mm or shorter...
September 2012: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/21910778/effect-of-implant-abutment-connection-design-on-load-bearing-capacity-and-failure-mode-of-implants
#17
COMPARATIVE STUDY
Stephanie Dittmer, Marc Philipp Dittmer, Philipp Kohorst, Michael Jendras, Lothar Borchers, Meike Stiesch
PURPOSE: In this in vitro study, six implant-abutment connection designs were compared and evaluated regarding load bearing capacities and failure modes. MATERIALS AND METHODS: Five implants of Astra Tech, Bego, Camlog, Friadent, Nobel Biocare, and Straumann were separately embedded in stainless steel tubes using polyurethane, for a total of 30 specimens. Specimens were statically loaded under an angle of 30° with respect to the implant axis in a universal testing machine using a test setup according to ISO 14801...
October 2011: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/21789931/-effect-of-decontaminating-solutions-on-titanium-surface-an-in-vitro-study-of-human-epithelial-cell-culture
#18
COMPARATIVE STUDY
Krisztina Ungvári, K István Pelsoczi, Bernadett Kormos, Albert Oszkó, Márta Radnai, Katalin Nagy, András Fazekas, Kinga Turzó
INTRODUCTION: The effects of three different decontaminating solutions in clinical use for peri-implantitis therapy on the chemical structure and surface roughness of commercially pure (CP) Ti were investigated. A further aim was to survey the response of the biological environment to these changes, by examining the attachment and proliferation of human epithelial cells after treatment of the Ti surfaces with these solutions. MATERIALS AND METHODS: CP (grade 4) machined titanium discs (CAMLOG Biotechnologies AG, Switzerland) were treated with 3% H2O2 (5 min), saturated citric acid (pH = 1; 1 min) or chlorhexidine gel (CHX, 5 min)...
March 2011: Fogorvosi Szemle
https://www.readbyqxmd.com/read/21728785/identification-card-and-codification-of-the-chemical-and-morphological-characteristics-of-14-dental-implant-surfaces
#19
David M Dohan Ehrenfest, Lydia Vazquez, Yeong-Joon Park, Gilberto Sammartino, Jean-Pierre Bernard
Dental implants are commonly used in daily practice; however, most surgeons do not really know the characteristics of these biomedical devices they are placing in their patients. The objective of this work is to describe the chemical and morphological characteristics of 14 implant surfaces available on the market and to establish a simple and clear identification (ID) card for all of them, following the classification procedure developed in the Dohan Ehrenfest et al (2010) Codification (DEC) system. Fourteen implant surfaces were characterized: TiUnite (Nobel Biocare), Ospol (Ospol), Kohno HRPS (Sweden & Martina), Osseospeed (AstraTech), Ankylos (Dentsply Friadent), MTX (Zimmer), Promote (Camlog), BTI Interna (Biotechnology Institute), EVL Plus (SERF), Twinkon Ref (Tekka), Ossean (Intra-Lock), NanoTite (Biomet 3I), SLActive (ITI Straumann), Integra-CP/NanoTite (Bicon)...
October 2011: Journal of Oral Implantology
https://www.readbyqxmd.com/read/21722192/in-vitro-influence-of-ultrasonic-stress-removal-force-preload-and-thermocycling-on-the-retrievability-of-implant-retained-crowns
#20
Christian Mehl, Sönke Harder, Dorothee Schwarz, Martin Steiner, Oliver Vollrath, Matthias Kern
OBJECTIVES: The main goals of this in vitro study were to evaluate the influence of thermocycling, ultrasonic stress and the removal force preload on the retrievability of cemented implant crowns using a clinical removal device (Coronaflex) and evaluating the tensile strength using a universal testing machine (UTM). METHODS: Thirty-six crowns were cast from a Co-Cr alloy for 36 tapered titanium abutments (5° taper, 4.3 mm diameter, 6 mm height, Camlog, Germany)...
August 2012: Clinical Oral Implants Research
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