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Journal of Prosthodontic Research

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https://www.readbyqxmd.com/read/29153552/cervical-margin-relocation-in-indirect-adhesive-restorations-a-literature-review
#1
REVIEW
Jelena Juloski, Serhat Köken, Marco Ferrari
PURPOSE: The aim of this review was to summarize the existing scientific literature investigating on cervical margin relocation technique (CMR) performed prior to the adhesive cementation of the indirect restorations. STUDY SELECTION: An electronic search with no date restriction was conducted in the MEDLINE database, accessed through PubMed. The following main keywords were used: "cervical margin relocation", "coronal margin relocation", "deep margin elevation" and "proximal box elevation"...
November 15, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29128350/biomechanical-behavior-of-adhesive-cement-layer-and-periodontal-tissues-on-the-restored-teeth-with-zirconia-rbfdps-using-three-kinds-of-framework-design-3d-fea-study
#2
Ayana Uraba, Reina Nemoto, Kosuke Nozaki, Tasuku Inagaki, Satoshi Omori, Hiroyuki Miura
PURPOSE: To investigate stress and strain concentrations on resin-bonded fixed dental prostheses (RBFDPs) frameworks of different design using finite element analysis. METHODS: A human dry skull was scanned and models were produced using three-dimensional printer. After abutment preparation, three frameworks, including a three-unit RBFDP, and two-unit cantilevered RBFDPs using #21 and #23 for the abutment tooth, were fabricated. Scanned data were subtracted to define boundary of each structure...
November 8, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29126811/properties-of-tonic-episodes-of-masseter-muscle-activity-during-waking-hours-and-sleep-in-subjects-with-and-without-history-of-orofacial-pain
#3
Acing Habibie Mude, Shigehisa Kawakami, Seiya Kato, Shogo Minagi
PURPOSE: To provide a scientific data related to the tonic activity of masseter muscle in subjects with and without history of orofacial pain during their normal daily life. METHODS: Thirty-three subjects were divided into two groups, a pain history group (PHG) and a non-pain history group (non-PHG), based on their responses to the Research Diagnostic Criteria for Temporomandibular Disorders questionnaire. After excluding four subjects with incomplete recordings, full-day masseter muscle surface EMGs of 29 subjects (10 men, 19 women; mean age 24...
November 7, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29126810/sensory-trick-splint-as-a-multimodal-therapy-for-oromandibular-dystonia
#4
Kazuya Yoshida
PURPOSE: Many patients with oromandibular dystonia, which is characterized by involuntary masticatory, lower facial, and/or tongue muscle contractions, experience relief of symptoms through sensory tricks such as eating chewing gum or candy. The aim of this study was to identify the factors influencing the effects of splints in patients with oromandibular dystonia. METHODS: Occlusal splints were inserted in 128 patients (89 women, 39 men) with oromandibular dystonia (102 with jaw closing dystonia, 20 with lingual dystonia, 5 with jaw deviation dystonia, 4 with jaw opening dystonia, 3 with lip dystonia, and 2 with jaw protrusion dystonia)...
November 7, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29032176/three-dimensional-evaluation-of-marginal-and-internal-fit-of-3d-printed-interim-restorations-fabricated-on-different-finish-line-designs
#5
Nawal Alharbi, Saud Alharbi, Vincent M J I Cuijpers, Reham B Osman, Daniel Wismeijer
PurposeTo evaluate the influence of fabrication method and finish line design on marginal and internal fit of full-coverage interim restorations. MethodsFour typodont models of maxillary central-incisor were prepared for full-coverage restorations. Four groups were defined; knife-edge (KE), chamfer (C), rounded-shoulder (RS), rounded-shoulder with bevel (RSB). All preparations were digitally scanned. A total of 80 restorations were fabricated; 20 per group (SLA/3D-printed n=10, milled n=10). All restorations were positioned on the master die and scanned using micro-computed tomography...
October 11, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29032956/evaluation-of-surface-treatments-of-monolithic-zirconia-in-different-sintering-stages
#6
Kamal Ebeid, Sebastian Wille, Tarek Salah, Marwa Wahsh, Maged Zohdy, Matthias Kern
PURPOSE: This study evaluated the effect of surface treatment of zirconia in pre-sintered and post-sintered stages on its surface roughness, phase transformation, and biaxial flexural strength (BFS). METHODS: Zirconia ceramic discs (n=40) having a final dimensions of 12mm diameter and 1.2mm thickness were milled then divided into three main groups according to the type of surface treatment performed (Group 1 (n=16); air-abrasion using Al2O3 particles, Group 2 (n=16); silica coating using Rocatec soft, and Group 3 (n=8); a control group receiving no surface treatment)...
October 9, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28935192/effect-of-priming-agents-on-shear-bond-strengths-of-resin-based-luting-agents-to-a-translucent-zirconia-material
#7
Shogo Yagawa, Futoshi Komine, Ryosuke Fushiki, Kei Kubochi, Fumiaki Kimura, Hideo Matsumura
PURPOSE: The purpose of the present study was to evaluate the effect of priming agents and artificial aging with thermocycling on shear bond strengths of two resin-based luting agents to a translucent zirconia material. METHODS: A total of 308 pairs of translucent zirconia disk specimens were divided into seven treatment groups: Alloy Primer (ALP), Clearfil Ceramic Primer Plus (CCP), Meta Fast Bonding Liner (MFB), MR. bond (MRB), Super-Bond PZ Primer Liquid B (PZB), V-Primer (VPR), and an unprimed group (UP)...
September 18, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28927995/measuring-system-for-an-attitude-angle-of-a-denture-using-an-inertial-measurement-unit
#8
Toshiaki Sekita, Syuhei Takeuchi, Syunsuke Minakuchi
PURPOSE: The aim of this study was to assemble and verify a measuring system for 3-D movements (attitude angle) of the denture during function. METHODS: For the calibration test, the sensor was fixed at the center of the rotary table. Operation and stopping of the rotary table were repeated 8 times, and the direction of rotation was reversed in the middle. The amount of rotation was 1.2 and 2.4°. As a pilot clinical trial, the attitude angles of three upper complete dentures during tapping were measured by this system...
September 15, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28927994/current-bone-substitutes-for-implant-dentistry
#9
REVIEW
Masahiro Yamada, Hiroshi Egusa
PURPOSE: Alveolar ridge augmentation is essential for success in implant therapy and depends on the biological performance of bone graft materials. This literature review aims to comprehensively explain the clinically relevant capabilities and limitations of currently available bone substitutes for bone augmentation in light of biomaterial science. STUDY SELECTION: The biological performance of calcium phosphate-based bone substitutes was categorized according to space-making capability, biocompatibility, bioabsorption, and volume maintenance over time...
September 15, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28916466/a-multi-centered-epidemiological-study-evaluating-the-validity-of-the-treatment-difficulty-indices-developed-by-the-japan-prosthodontic-society
#10
Takuo Kuboki, Tetsuo Ichikawa, Kazuyoshi Baba, Masanori Fujisawa, Hironobu Sato, Hideki Aita, Shigeto Koyama, Masayuki Hideshima, Yuji Sato, Hiroyuki Wake, Aya Kimura-Ono, Kan Nagao, Yorika Kodaira-Ueda, Katsushi Tamaki, Shinsuke Sadamori, Kazuhiro Tsuga, Yasuhiro Nishi, Takashi Sawase, Hisashi Koshino, Shin-Ichi Masumi, Kaoru Sakurai, Kanji Ishibashi, Takashi Ohyama, Yasumasa Akagawa, Toshihiro Hirai, Keiichi Sasaki, Kiyoshi Koyano, Hirofumi Yatani, Hideo Matsumura
PURPOSE: The Japan Prosthodontic Society developed a multi-axis assessment protocol to evaluate the complex variations in patients who need prosthodontic care, and to classify the level of treatment difficulty. A previous report found the protocol to be sufficiently reliable. The purpose of this multi-center cohort study was to evaluate the validity of this multi-axis assessment protocol. METHODS: The treatment difficulty was evaluated using the multi-axis assessment protocol before starting prosthodontic treatment...
September 12, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28916465/corrosive-effects-of-fluoride-on-titanium-under-artificial-biofilm
#11
Azusa Fukushima, Gen Mayanagi, Keiichi Sasaki, Nobuhiro Takahashi
PURPOSE: This study aimed to investigate the effect of sodium fluoride (NaF) on titanium corrosion using a biofilm model, taking environmental pH into account. METHODS: Streptococcus mutans cells were used as the artificial biofilm, and pH at the bacteria-titanium interface was monitored after the addition of 1% glucose with NaF (0, 225 or 900ppmF) at 37°C for 90min. In an immersion test, the titanium samples were immersed in the NaF solution (0, 225 or 900ppm F; pH 4...
September 12, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28916464/adhesion-procedure-for-cad-cam-resin-crown-bonding-reduction-of-bond-strengths-due-to-artificial-saliva-contamination
#12
Asuka Kawaguchi-Uemura, Atsushi Mine, Mariko Matsumoto, Yuko Tajiri, Mami Higashi, Tomoshige Kabetani, Ryosuke Hagino, Dai Imai, Takuya Minamino, Jiro Miura, Hirofumi Yatani
PURPOSE: The present study aimed to elucidate how saliva contamination affects microtensile bond strength of resin cement to CAD/CAM resin blocks and identify a decontamination method that can restore original bond strength. METHODS: The KATANA AVENCIA block (Kuraray Noritake Dental) was sandblasted on the adherend surface (P-Co group). Then, the block was contaminated with artificial saliva (Saliveht Aerosol, Teijin). Air dry (N-Co), sandblasting (Sb) and phosphate acid cleaning (AT) groups were prepared...
September 12, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28888428/displacement-comparison-of-cad-cam-titanium-and-zirconia-abutments-to-implants-with-different-conical-connections
#13
Burak Yilmaz, Shervin Hashemzadeh, Jeremy D Seidt, Nancy L Clelland
PURPOSE: To compare the displacements of CAD-CAM zirconia and titanium abutments into different internal connection systems after torquing. METHODS: OsseoSpeed EV and OsseoSpeed TX implants (n=10) were placed in resin blocks. Zirconia and titanium abutments (n=5) were first hand tightened and then tightened to the recommended torque (20Ncm for TX and 25Ncm for EV). Displacements of abutments between screw tightening by hand and torque driver was measured using three-dimensional digital image correlation (3D DIC) technique...
September 6, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28886951/strength-comparison-of-anterior-teeth-restored-with-ceramic-endocrowns-vs-custom-made-post-and-cores
#14
Beata Dejak, Andrzej Młotkowski
PURPOSE: The aim of the study was to compare strength of the anterior teeth restored with ceramic endocrowns versus custom-made post and core. METHODS: The investigation used the finite element analysis. Three 3-D models of maxillary central incisor were created: model A-tooth restored with metal post and core with ceramic crown; model B-tooth with leucite ceramic endocrown; model C-tooth with lithium disilicate ceramic endocrown. Each model was subjected to a 100N force applied at a distance of 5mm from the incisal edge, at the angle of 130° to the long axis of the tooth...
September 5, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28886950/influence-of-thermo-mechanical-cycling-on-porcelain-bonding-to-cobalt-chromium-and-titanium-dental-alloys-fabricated-by-casting-milling-and-selective-laser-melting
#15
Maja Antanasova, Andraž Kocjan, Janez Kovač, Borut Žužek, Peter Jevnikar
PURPOSE: The aim has been to determine the effect of thermo-mechanical cycling on shear-bond-strength (SBS) of dental porcelain to Co-Cr and Ti-based alloys fabricated by casting, computer-numerical-controlled milling, and selective-laser-melting (SLM). METHODS: Seven groups (n=22/group) of metal cylinders were fabricated by casting (Co-Cr and commercially pure-cpTi), milling (Co-Cr, cpTi, Ti-6Al-4V) or by SLM (Co-Cr and Ti-6Al-4V) and abraded with airborne-particles...
September 5, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28869174/association-between-missing-tooth-count-and-mortality-a-systematic-review
#16
REVIEW
Sreenivas Koka, Avni Gupta
PURPOSE: The purpose of this review was to analyze existing literature on the relationship between tooth count and mortality by evaluating the findings in the context of methodological variations. We aimed at addressing the question of whether preserving natural teeth can impact mortality. STUDY SELECTION: PubMed, Web of Science and CINAHL databases were systematically searched using various combinations of related and synonymous keywords for "tooth count" and "mortality"...
August 28, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28844413/analysis-and-management-of-implant-prosthetic-complications-description-of-a-diagnostic-and-therapeutic-algorithm-with-a-clinical-case
#17
Gennaro De Marco, Fabrizio Di Francesco, Alessandro Lanza
PATIENT: A 65-year-old non-smoker man with stabilized chronic periodontitis and in good general health conditions presented to our observation. The patient reported crown mobility, gingival inflammation and localized pain, corresponding to the mandibular right first molar rehabilitated with a cement-retained implant crown. This clinical situation suspected a fracture of an implant-prosthetic component. Through the described diagnostic algorithm, an abutment hexagon fracture was revealed...
August 24, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28843642/the-effect-of-glass-fiber-posts-and-ribbons-on-the-fracture-strength-of-teeth-with-flared-root-canals-restored-using-composite-resin-post-and-cores
#18
Wataru Komada, Mariko Kubo, Shiho Otake, Tasuku Inagaki, Satoshi Omori, Hiroyuki Miura
PURPOSE: This study evaluated the fracture strength and mode of failure of structurally compromised teeth with flared root canals restored using composite resin with four different systems. METHODS: Sixty endodontically treated bovine teeth were uniformly shaped to simulate human mandibular premolars with flared root canals. The roots were divided into four groups of 15 specimens each based on the type of restoration: composite resin core only (control), glass fiber post, cylindroid glass fiber ribbons, and glass fiber post and ribbons...
August 23, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28827030/is-zirconia-a-viable-alternative-to-titanium-for-oral-implant-a-critical-review
#19
REVIEW
Karthik Sivaraman, Aditi Chopra, Aparna I Narayan, Dhanasekar Balakrishnan
PURPOSE: Titanium based implant systems, though considered as the gold standard for rehabilitation of edentulous spaces, have been criticized for many inherent flaws. The onset of hypersensitivity reactions, biocompatibility issues, and an unaesthetic gray hue have raised demands for more aesthetic and tissue compatible material for implant fabrication. Zirconia is emerging as a promising alternative to conventional Titanium based implant systems for oral rehabilitation with superior biological, aesthetics, mechanical and optical properties...
August 17, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28802555/jps-drives-prosthodontics-with-pride-and-responsibility
#20
EDITORIAL
Tetsuo Ichikawa
No abstract text is available yet for this article.
August 10, 2017: Journal of Prosthodontic Research
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