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Journal of Prosthodontic Research

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https://www.readbyqxmd.com/read/28735678/all-ceramic-inlay-retained-fixed-dental-prostheses-for-replacing-posterior-missing-teeth-a-systematic-review
#1
REVIEW
Raquel Castillo-Oyagüe, Rocío Sancho-Esper, Christopher D Lynch, María-Jesús Suárez-García
PURPOSE: To evaluate the current status of all-ceramic inlay-retained fixed dental prostheses (CIR-FDPs) for the replacement of posterior teeth. STUDY SELECTION: Screening of titles and abstracts, full-text analysis for inclusion eligibility, quality assessment, data extraction and evaluation of the scientific evidence were performed independently by two reviewers. The electronic databases MEDLINE/PubMed, EMBASE, Cochrane Central Register of Controlled Trials, and Compludoc were searched with no restriction to publication date or language...
July 20, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28676294/psychological-stress-relieving-effects-of-chewing-relationship-between-masticatory-function-related-factors-and-stress-relieving-effects
#2
Akinori Tasaka, Manaki Kikuchi, Kousuke Nakanishi, Takayuki Ueda, Shuichiro Yamashita, Kaoru Sakurai
PURPOSE: The objective of the present study was to investigate the relationship between masticatory function-related factors (masticatory performance, occlusal contact area, maximum bite force, number of chewing strokes, and muscle activity) and the stress-relieving effects of chewing. METHODS: A total of 28 healthy male subjects were instructed to rest or chew for 10min after 30min of stress loading with arithmetic calculations. Their stress state was assessed by measuring salivary cortisol levels...
July 1, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28666845/a-systematic-review-of-studies-comparing-conventional-complete-denture-and-implant-retained-overdenture
#3
REVIEW
Ahmad Kutkut, Elizangela Bertoli, Robert Frazer, Gitanjali Pinto-Sinai, Rodrigo Fuentealba Hidalgo, Jamie Studts
PURPOSE: Several studies reported better outcomes when restoring edentulous mandible with unsplinted IODs compared to CCDs; however, it is not clear if these outcomes remain when the full literature is considered. The aim of this systematic review is to compare conventional complete dentures (CCDs) to unsplinted implant-retained overdentures (IODs) with regard to efficacy, satisfaction and quality of life. STUDY SELECTION: The main question addressed was: How do CCDs compare to unsplinted IODs with regard to efficacy, satisfaction and quality of life? Three databases were electronically searched to identify articles comparing CCD to unsplinted IOD...
June 27, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28663024/comparison-and-evaluation-of-marginal-and-internal-gaps-in-cobalt-chromium-alloy-copings-fabricated-using-subtractive-and-additive-manufacturing
#4
Dong-Yeon Kim, Ji-Hwan Kim, Hae-Young Kim, Woong-Chul Kim
PURPOSE: To evaluate the marginal and internal gaps of cobalt-chromium (Co-Cr) alloy copings fabricated using subtractive and additive manufacturing. METHODS: A study model of an abutment tooth 46 was prepared by a 2-step silicone impression with dental stone. Fifteen stereolithography files for Co-Cr alloy copings were compiled using a model scanner and dental CAD software. Using the lost wax (LW), wax block (WB), soft metal block (SMB), microstereolithography (μ-SLA), and selected laser melting (SLM) techniques, 15 Co-Cr alloy copings were fabricated per group...
June 26, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28651905/self-etching-ceramic-primer-versus-hydrofluoric-acid-etching-etching-efficacy-and-bonding-performance
#5
Hatem M El-Damanhoury, Maria D Gaintantzopoulou
AIM: This study assessed the effect of pretreatment of hybrid and glass ceramics using a self-etching primer on the shear bond strength (SBS) and surface topography, in comparison to pretreatment with hydrofluoric acid and silane. METHODS: 40 rectangular discs from each ceramic material (IPS e.max CAD;EM, Vita Mark II;VM, Vita Enamic;VE), were equally divided (n=10) and assigned to one of four surface pretreatment methods; etching with 4.8% hydrofluoric acid followed by Monobond plus (HFMP), Monobond etch & prime (Ivoclar Vivadent) (MEP), No treatment (NT) as negative control and Monobond plus (Ivoclar Vivadent) with no etching (MP) as positive control...
June 23, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28647224/does-artificial-aging-affect-mechanical-properties-of-cad-cam-composite-materials
#6
Ferhan Egilmez, Gulfem Ergun, Isil Cekic-Nagas, Pekka K Vallittu, Lippo V J Lassila
PURPOSE: The purpose of this study was to determine the flexural strength and Weibull characteristics of different CAD/CAM materials after different in vitro aging conditions. METHODS: The specimens were randomly assigned to one of the six in vitro aging conditions: (1) water storage (37°C, 3 weeks), (2) boiling water (24h), (3) hydrochloric acid exposure (pH: 1.2, 24h), (4) autoclave treatment (134°C, 200kPa, 12h), (5) thermal cycling (5000 times, 5-55°C), (6) cyclic loading (100N, 50,000 cycles)...
June 21, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28633987/a-paradigm-shift-for-bone-quality-in-dentistry-a-literature-review
#7
REVIEW
Shinichiro Kuroshima, Masaru Kaku, Takuya Ishimoto, Muneteru Sasaki, Takayoshi Nakano, Takashi Sawase
PURPOSE: The aim of this study was to present the current concept of bone quality based on the proposal by the National Institutes of Health (NIH) and some of the cellular and molecular factors that affect bone quality. STUDY SELECTION: This is a literature review which focuses on collagen, biological apatite (BAp), and bone cells such as osteoblasts and osteocytes. RESULTS: In dentistry, the term "bone quality" has long been considered to be synonymous with bone mineral density (BMD) based on radiographic and sensible evaluations...
June 17, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28625665/color-stability-of-glass-fiber-reinforced-polypropylene-for-non-metal-clasp-dentures
#8
Manamu Nagakura, Yasuhiro Tanimoto, Norihiro Nishiyama
PURPOSE: The purpose of this study was to investigate the color stability of a glass-fiber-reinforced thermoplastic (GFRTP), for use in non-metal clasp dentures (NMCDs). METHODS: GFRTPs composed of E-glass fibers and polypropylene with 2 mass% of pigments were fabricated using injection molding. According to our previous study on the optimum fiber content for GFRTPs, we prepared GFRTPs with fiber contents of 0, 10, and 20 mass% (GF0, GF10, and GF20). Commercially available NMCD and PMMA materials were used as controls...
June 15, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28625664/effects-of-different-numbers-of-mini-dental-implants-on-alveolar-ridge-strain-distribution-under-mandibular-implant-retained-overdentures
#9
Pongsakorn Warin, Pimduen Rungsiyakull, Chaiy Rungsiyakull, Pathawee Khongkhunthian
PURPOSE: To investigate the strains around mini-dental implants (MDIs) and retromolar edentulous areas when using different numbers of MDIs in order to retain mandibular overdentures. MATERIALS AND METHODS: Four different prosthetic situations were fabricated on an edentulous mandibular model including a complete denture (CD), and three overdentures, retained by four, three or two MDIs in the interforaminal region with retentive attachments. A static load of 200N was applied on the posterior teeth of the dentures under bilateral or unilateral loading conditions...
June 15, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28625663/development-of-complete-dentures-based-on-digital-intraoral-impressions-case-report
#10
Jing-Huan Fang, Xueyin An, Seung-Mi Jeong, Byung-Ho Choi
PATIENT: A 60-year-old man presented for refabrication of his maxillary complete denture. In this case, a digital process was chosen to replace the ill-fitted complete maxillary denture. A specialized scan retractor was used to retract the mobile tissues of the lips, cheeks and vestibule while taking a digital impression. The interocclusal record obtained in the patient's mouth was scanned in order to digitally register the occlusal vertical dimension. The denture base and teeth were designed on virtual models that were mounted at the occlusal vertical dimension, and were made using CAD/CAM technology...
June 15, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28606421/spontaneous-jaw-muscle-activity-in-patients-with-acquired-brain-injuries-preliminary-findings
#11
Mohit Kothari, Vibeke Louise Funch Madsen, Eduardo E Castrillon, Jørgen Feldbæk Nielsen, Peter Svensson
PATIENTS: High or excessive parafunctional jaw muscle activity is a frequent complication of acquired brain injury (ABI) and may have some similarities to bruxism. Bruxism has been associated with increased tooth wear, masseter hypertrophy and headaches. The aim of this observational study was to identify the levels of jaw muscle activity from fourteen ABI patients having different functional and cognitive levels in their early phase of neurological rehabilitation (according to their Ranchos Los Amigos Scale (RLAS) score)...
June 9, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28606420/pressure-transmission-area-and-maximum-pressure-transmission-of-different-thermoplastic-resin-denture-base-materials-under-impact-load
#12
Hubban Nasution, Krid Kamonkhantikul, Mansuang Arksornnukit, Hidekazu Takahashi
PURPOSES: The purposes of the present study were to examine the pressure transmission area and maximum pressure transmission of thermoplastic resin denture base materials under an impact load, and to evaluate the modulus of elasticity and nanohardness of thermoplastic resin denture base. METHODS: Three injection-molded thermoplastic resin denture base materials [polycarbonate (Basis PC), ethylene propylene (Duraflex), and polyamide (Valplast)] and one conventional heat-polymerized acrylic resin (PMMA, SR Triplex Hot) denture base, all with a mandibular first molar acrylic resin denture tooth set in were evaluated (n=6)...
June 9, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28566138/a-newly-developed-ultraminiature-wearable-electromyogram-system-useful-for-analyses-of-masseteric-activity-during-the-whole-day
#13
Taihiko Yamaguchi, Saki Mikami, Miku Saito, Kazuki Okada, Akihito Gotouda
PURPOSE: We describe the characteristics of a new data-logger-type ultraminiature electromyogram (EMG) system (FLA-500-SD) and methods used for recording and we show its potential in clinical applications by presenting an example of a clinical case. METHOD: FLA contains electrodes, an amplifier, 12-bit analog-to-digital (A/D) converter at a sampling frequency of 1kHz, 16-bit CPU, a 3.7-V coin-shaped lithium battery, and a micro SD card. The size of FLA is 37.0×23...
May 26, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28709574/progress-of-the-journal-of-prosthodontic-research-under-the-four-year-action-plan
#14
EDITORIAL
Hiroshi Egusa
No abstract text is available yet for this article.
July 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28427837/in-vitro-fatigue-tests-and-in-silico-finite-element-analysis-of-dental-implants-with-different-fixture-abutment-joint-types-using-computer-aided-design-models
#15
Satoshi Yamaguchi, Yasufumi Yamanishi, Lucas S Machado, Shuji Matsumoto, Nick Tovar, Paulo G Coelho, Van P Thompson, Satoshi Imazato
PURPOSE: The aim of this study was to evaluate fatigue resistance of dental fixtures with two different fixture-abutment connections by in vitro fatigue testing and in silico three-dimensional finite element analysis (3D FEA) using original computer-aided design (CAD) models. METHODS: Dental implant fixtures with external connection (EX) or internal connection (IN) abutments were fabricated from original CAD models using grade IV titanium and step-stress accelerated life testing was performed...
April 17, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28417880/the-japan-prosthodontic-society-is-establishing-the-journal-of-prosthodontic-research-jpr-best-paper-award
#16
EDITORIAL
Ryuji Hosokawa
No abstract text is available yet for this article.
April 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27324294/a-new-occlusal-surface-design-for-artificial-posterior-teeth-to-achieve-high-masticatory-performance
#17
Yuki Hashimoto, Kyoko Sugimoto, Yuki Tanaka, Kazuhiro Oki, Shogo Minagi
PURPOSE: The low masticatory efficiency of denture prostheses impairs the ability of wearers to consume high-fiber foods. Hence, artificial teeth with high masticatory efficiency are required. This study aimed to establish an occlusal surface design for posterior artificial teeth in denture prostheses that is compatible with the existing artificial teeth arrangement and that has high masticatory efficiency for the comminution of raw vegetables. METHODS: A masticatory simulator for occluding complete dentures was used to evaluate the masticatory efficiency of four occlusal surface designs, i...
April 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28359872/microbial-colonization-at-the-implant-abutment-interface-and-its-possible-influence-on-periimplantitis-a-systematic-review-and-meta-analysis
#18
REVIEW
Marco Tallarico, Luigi Canullo, Martina Caneva, Mutlu Özcan
PURPOSE: The aim of this systematic review and meta-analysis was to evaluate the microbial colonization at the implant-abutment interfaces (IAI) on bone-level implants and to identify possible association with peri-implant conditions. STUDY SELECTION: The focus question aimed to answer whether two-piece osseointegrated implants, in function for at least 1 year, in human, relate to higher bacterial count and the onset of periimplantitis, compared to healthy peri-implant conditions...
March 27, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28359871/evaluation-of-functional-parameters-in-the-occlusion-of-complete-denture-wearers-before-and-after-prosthetic-treatment
#19
Kuć Joanna, Sierpińska Teresa, Gołębiewska Maria
PURPOSE: The aim of the study was to evaluate functional parameters of the occlusion in complete denture wearers before and after prosthetic treatment. METHODS: The sample used as the basis for the present study consisted of 50 healthy Caucasian patients (35 women and 15 men), aged from 44 to 86 years (mean=69.18±10), with a total deficiency of teeth. All patients received new complete dentures. Each patient underwent lateral radiograph with the presence of complete dentures, both before (initially existing dentures) and after the prosthetic treatment (new restorations)...
March 27, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28343924/properties-of-discontinuous-s2-glass-fiber-particulate-reinforced-resin-composites-with-two-different-fiber-length-distributions
#20
Qiting Huang, Sufyan Garoushi, Zhengmei Lin, Jingwei He, Wei Qin, Fang Liu, Pekka Kalevi Vallittu, Lippo Veli Juhana Lassila
PURPOSE: To investigate the reinforcing efficiency and light curing properties of discontinuous S2-glass fiber-particulate reinforced resin composite and to examine length distribution of discontinuous S2-glass fibers after a mixing process into resin composite. METHODS: Experimental S2-glass fiber-particulate reinforced resin composites were prepared by mixing 10wt% of discontinuous S2-glass fibers, which had been manually cut into two different lengths (1.5 and 3...
March 23, 2017: Journal of Prosthodontic Research
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