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Journal of Prosthodontic Research

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https://www.readbyqxmd.com/read/30006264/masticatory-function-of-conventional-complete-denture-wearers-changing-to-2-implant-retained-mandibular-overdentures-clinical-factor-influences-after-1year-of-function
#1
Anna Paula da Rosa Possebon, Raissa Micaella Marcello-Machado, Amália Machado Bielemann, Alessandra Julie Schuster, Luciana de Rezende Pinto, Fernanda Faot
PURPOSE: Evaluate how clinical factors related to conventional complete denture (CCD) wearers, can influence masticatory function (MF) of totally edentulous patients before and after one-year transitioning to implant-retained mandibular overdentures (IMO). METHODS: Forty patients using CCD were rehabilitated with IMO and their MF was evaluated by: (i) ST_X50: theoretical aperture through which 50% of the weight of the particles would pass; (ii) STB: distribution homogeneity of the crushed particles...
July 10, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29983378/influence-of-polymerization-time-on-properties-of-dual-curing-cements-in-combination-with-high-translucency-monolithic-zirconia
#2
Mario Alovisi, Nicola Scotti, Allegra Comba, Elena Manzon, Elena Farina, Damiano Pasqualini, Riccardo Michelotto Tempesta, Lorenzo Breschi, Milena Cadenaro
PURPOSE: The aim of this in vitro study was to assess conversion degree (DC), micro-hardness (MH) and bond strength of two dual-curing resin cements employed under translucent monolithic zirconia irradiated with different time protocols. METHODS: 84 square shaped samples of 1mm thickness were prepared from high translucency zirconia blocks and divided into two groups (n=24) according to the cement employed: (1) Rely-X Ultimate; (2) Panavia SA. Each group was further divided into 3 subgroups (n=8) according to the irradiation time: (a) no light; (b) 20s; (c) 120s...
July 5, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29983377/a-systematic-review-and-meta-analysis-on-the-clinical-outcome-of-zirconia-implant-restoration-complex
#3
REVIEW
Mireia Haro Adánez, Hironobu Nishihara, Wael Att
PURPOSE: This systematic review evaluates the clinical outcome of zirconia implant-associated survival and success rates, marginal bone loss, and implant-restoration complex integrity. STUDY SELECTION: Using the preferred reporting items for systematic reviews and meta-analysis (PRISMA) guidelines, studies including ≥10 patients restored with zirconia implants supporting single crowns (SCs) or fixed dental prostheses (FDPs) prior to January 2017 were identified...
July 5, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29936052/five-year-clinical-outcomes-and-survival-of-chairside-cad-cam-ceramic-laminate-veneers-a-retrospective-study
#4
Farahnaz Nejatidanesh, Ghazal Savabi, Mehrak Amjadi, Mahsa Abbasi, Omid Savabi
PURPOSE: The aim of this clinical study was to compare the survival, modified California Dental Association (CDA) criteria, and periodontal parameters of laminate veneers made with Empress CAD and emax CAD over 60 months. METHODS: One hundred and ninety seven ceramic laminate veneers were placed in 71 patients in a private practice. The restorations were made using CEREC AC Bluecam with Empress CAD and emax CAD blocks. Modified CDA guidelines were used to evaluate clinical performance of the restorations...
June 20, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29910001/effects-of-three-drying-methods-of-post-space-dentin-bonding-used-in-a-direct-resin-composite-core-build-up-method
#5
Taichi Iwashita, Atsushi Mine, Mariko Matsumoto, Hayaki Nakatani, Mami Higashi, Asuka Kawaguchi-Uemura, Tomoshige Kabetani, Yuko Tajiri, Dai Imai, Ryosuke Hagino, Jiro Miura, Takuya Minamino, Hirofumi Yatani
PURPOSE: The purpose of this study was to evaluate drying methods for post space dentin bonding in a direct resin composite core build-up method. METHODS: Experiment 1: Four root canal plastic models, having diameters of 1.0 or 1.8mm and parallel or tapered shapes, were prepared. After drying each post space using three drying methods (air drying, paper-point drying, or ethanol drying, which involves filling the space with 99.5 vol% ethanol followed by air drying), the residual liquid in the models was weighed...
June 14, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29891420/loss-of-natural-abutment-teeth-with-cast-copings-retaining-overdentures-a-systematic-review-and-meta-analysis
#6
REVIEW
Alexander Mercouriadis-Howald, Noemie Rollier, Sayaka Tada, Gerald McKenna, Kensuke Igarashi, Martin Schimmel
PURPOSE: To analyze the available evidence in the English, German and Japanese literature on the survival and complications of natural teeth with cast copings used to retain overdentures (ROD). STUDY SELECTION: A systematic search strategy was conducted using MeSH terms and pre-defined criteria. Two groups of researchers searched Pubmed, CENTRAL, Embase (English, German), Ichushi-web (Japanese) as well as hand searching. Data were extracted independently by the two groups...
June 8, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29891419/micro-ct-evaluation-of-marginal-and-internal-fit-of-cemented-polymer-infiltrated-ceramic-network-material-crowns-manufactured-after-conventional-and-digital-impressions
#7
Rinet Dauti, Barbara Cvikl, Bledar Lilaj, Patrick Heimel, Andreas Moritz, Andreas Schedle
PURPOSE: Purpose of this study was to evaluate the accuracy of fit of cemented polymer infiltrated ceramic network (PICN) material crowns manufactured after digital and conventional impression techniques using micro computed tomography (CT). Furthermore to determine the cement space volume and porosities in the cement layer. METHODS: A molar typodont tooth was prepared for PICN material crowns and replicated thirty times. The dies were randomly divided into three groups of 10 specimens each according to the impression technique: 3M True Definition Scanner (TDS), cara TRIOS (Trios) and Impregum Penta Soft (Impregum)...
June 8, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29880334/relationship-between-status-of-dentition-and-incident-functional-disability-in-an-elderly-japanese-population-prospective-cohort-study-of-the-tsurugaya-project
#8
Takamasa Komiyama, Takashi Ohi, Yoshitada Miyoshi, Takahisa Murakami, Akito Tsuboi, Yasutake Tomata, Ichiro Tsuji, Makoto Watanabe, Yoshinori Hattori
PURPOSE: The purpose of this study was to examine whether the status of dentition is associated with incident functional disability in elderly people. METHODS: This prospective cohort study targeted community-dwelling Japanese adults of age ≥70 years (n=838). Participants were classified into the following four groups in accordance with Miyachi's Triangular Classification, which represents the status of dentition on the basis of numbers of remaining teeth and occlusal supports: Zone A, ≥10 occlusal supports; Zone B, 5-9 occlusal supports; Zone D, ≤4 occlusal supports and ≥11 remaining teeth and Zone C, ≤10 remaining teeth...
June 4, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29866446/development-validity-and-reliability-of-the-orofacial-esthetic-scale-spanish-version
#9
Miguel Simancas-Pallares, Mike T John, Swati Prodduturu, William A Rush, Christopher J Enstad, Patricia Lenton
PURPOSE: To develop a Spanish version of the Orofacial Esthetic Scale (OES-Sp) and to determine its psychometric properties in dental patients. METHODS: We performed a validation study for OES development and validation into Spanish. In the development phase, eight individuals participated in the translation process (cross-cultural adaptation) following the PROMIS methodology. In the validation phase, 331 dental patients (age mean±sd: 42.9±12.3years, 59 % female) from the HealthPartners dental clinics in Minnesota, USA responded to a survey of Spanish speaking patients (n=540, response rate: 61 %)...
June 1, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29859796/a-digital-approach-to-dynamic-jaw-tracking-using-a-target-tracking-system-and-a-structured-light-three-dimensional-scanner
#10
Joo Hyun Kwon, Sungbin Im, Minho Chang, Jong-Eun Kim, June-Sung Shim
PURPOSE: This technical procedure describes a method for tracking mandibular movement using a three-dimensional (3D) optical scanner and target tracking system to digitally portray the motion of the mandible and temporomandibular joints by merging cone beam computed tomography (CBCT) data. METHODS: Four nonreflective targets were attached to the labial surface of the incisors in a noncolinear arrangement. Mandibular movement was tracked directly using a 3D facial scanner and target tracking software after merging facial scanning data, digital data obtained from a diagnostic cast, and CBCT scan data based on several landmarks of the anterior teeth...
May 30, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29843978/piezoelectric-surgery-versus-conventional-drilling-for-implant-site-preparation-a-meta-analysis
#11
REVIEW
Sara Amghar-Maach, Alba Sánchez-Torres, Octavi Camps-Font, Cosme Gay-Escoda
PURPOSE: To answer the PICO question: "Among patients to whom an implant is placed, does the piezoelectric surgery (PS) compared to the conventional drilling (CS) achieve higher implant stability, increase surgical time or improve implant survival rate?" STUDY SELECTION: Two independent authors screened the literature through MEDLINE, Cochrane Library and Scopus. Randomized or non-randomized controlled trials, prospective and retrospective cohort studies comparing implant stability and/or clinical outcomes with PS versus CS used for implant site preparation published in the last 10 years were included in the search...
May 26, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29776845/ten-year-survival-of-immediate-loading-implants-in-fully-edentulous-mandibles-in-the-japanese-population-a-multilevel-analysis
#12
Kazuhiko Kaneda, Yusuke Kondo, Chihiro Masaki, Taro Mukaibo, Shintaro Tsuka, Akiko Tamura, Fumiko Aonuma, Kouhei Shinmyouzu, Masanori Iwasaki, Toshihiro Ansai, Ryuji Hosokawa
PURPOSE: To evaluate the long-term clinical results of and risk factors for immediate-loading implant treatment of completely edentulous mandibles. METHODS: We retrospectively studied 220 implants in 52 patients who received immediate-loading implants in fully edentulous mandibles. Kaplan-Meier survival analyses, log-rank tests, and multilevel mixed-effects parametric survival analysis was used for statistical analyses. RESULTS: Thirteen of implants in seven patients failed, and the 10-year cumulative implant survival rate was 93...
May 15, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29759826/framework-design-and-pontics-of-fiber-reinforced-composite-fixed-dental-prostheses-an-overview
#13
REVIEW
Leila Perea-Lowery, Pekka K Vallittu
PURPOSE: Fiber-reinforced composite (FRC) fixed dental prostheses (FDPs) have shown good performance in clinical applications due to their good mechanical properties and minimally invasive approach. However, typical failure patterns of FRC FDPs are often localized at the pontic site. That reflects the structural considerations at the framework and pontic location that need to be examined when creating these kinds of prostheses. STUDY SELECTION: Peer-reviewed articles and other scientific literature were reviewed for providing up-to-date information on how pontics of FRC FDPs can be made...
May 11, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29731271/effect-of-preparation-design-for-all-ceramic-restoration-on-maxillary-premolar-a-3d-finite-element-study
#14
Ebrahim Maghami, Ehsan Homaei, Khalil Farhangdoost, Edmond Ho Nang Pow, Jukka Pekka Matinlinna, James Kit-Hon Tsoi
PURPOSE: The aim of this study was to investigate and quantify the effect of preparation design parameters on a premolar restored with two different CAD/CAM ceramic crowns by three-dimensional finite element analysis (FEA). METHODS: A restored human first premolar was digitized by a micro-CT scanner and a 3D model was created by a medical image processing software (Mimics). Following segmentation, dentine and ceramic were extracted by a surface meshing software (3-matic)...
May 3, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29706464/factors-related-to-masticatory-performance-in-healthy-elderly-individuals
#15
Koji Morita, Hiroki Tsuka, Kan Kato, Takahiro Mori, Rumi Nishimura, Mitsuyoshi Yoshida, Kazuhiro Tsuga
PURPOSE: Maintenance of natural dentition and/or prosthodontic rehabilitation is necessary for good masticatory function. Although other factors such as physical and oral functions are also important for masticatory performance, only a few studies have evaluated their roles. The aim of the current study was to assess factors associated with masticatory performance among elderly individuals, while maintaining and/or reconstructing all occlusal support areas. METHODS: The present study was designed and implemented as a cross-sectional study, involving a total of 262 participants (mean age: 74...
April 26, 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29605190/fracture-strength-testing-of-crowns-made-of-cad-cam-composite-resins
#16
Ryota Okada, Masaki Asakura, Akihiro Ando, Hirokazu Kumano, Seiji Ban, Tatsushi Kawai, Jun Takebe
PURPOSE: The purpose of this study was to ascertain whether computer aided design/computer aided manufacturing (CAD/CAM) composite resin crowns have sufficient strength to withstand the bite force of the molar teeth. The null hypothesis was that the fracture strength of CAD/CAM composite resin crowns is lower than the average maximum bite force of the molar tooth. METHODS: The crowns, which shape is the right maxillary first molar, were fabricated using four CAD/CAM blanks made of composite resins (Block HC: HC, KZR-CAD HR: HR, KZR-CAD HR2: HR2, Avencia Block: AVE) and one CAD/CAM blank made of lithium disilicate glass-ceramic (IPS e...
July 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29526509/availability-of-cosmetic-treatment-using-novel-cosmetics-based-material-on-patients-with-craniofacial-concavity
#17
Shigeto Koyama, Hiroyasu Kanetaka, Yoshinori Sagehashi, Keiichi Sasaki, Naoko Sato
PURPOSE: Patients treated with maxillofacial prosthetics often experience emotional problems because of the remaining facial skin concavity such as a surgical scar. In such cases, cosmetic treatment can potentially correct their skin tone imperfections and deformities. This study aimed to evaluate the clinical availability of novel cosmetics-based material for craniofacial small concavity by initiating a cosmetic treatment in a preliminary case. METHODS: Eighteen patients with aesthetic problems such as craniofacial deformities, small defects, and concavities on their faces underwent cosmetic treatment that was performed by makeup practitioners...
July 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29475809/glass-fiber-reinforced-thermoplastics-for-use-in-metal-free-removable-partial-dentures-combined-effects-of-fiber-loading-and-pigmentation-on-color-differences-and-flexural-properties
#18
Yasuhiro Tanimoto, Manamu Nagakura, Norihiro Nishiyama
PURPOSE: The purpose of this study was to investigate the combined effects of fiber loading and pigmentation on the color differences and flexural properties of glass fiber-reinforced thermoplastics (GFRTPs), for use in non-metal clasp dentures (NMCDs). METHODS: The GFRTPs consisted mainly of E-glass fibers, a polypropylene matrix, and a coloring pigment: the GFRTPs with various fiber loadings (0, 10, and 20mass%) and pigmentations (0, 1, 2, and 4mass%) were fabricated by using an injection molding...
July 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29397352/the-effect-of-warm-air-blowing-on-the-microtensile-bond-strength-of-one-step-self-etch-adhesives-to-root-canal-dentin
#19
Keita Taguchi, Keiichi Hosaka, Masaomi Ikeda, Ryuzo Kishikawa, Richard Foxton, Masatoshi Nakajima, Junji Tagami
PURPOSE: The use of warm air-blowing to evaporate solvents of one-step self-etch adhesive systems (1-SEAs) has been reported to be a useful method. The purpose of this study was to evaluate the effect of warm air-blowing on root canal dentin. METHODS: Four 1-SEAs (Clearfil Bond SE ONE, Unifil Core EM self-etch bond, Estelink, BeautiDualbond EX) were used. Each 1-SEA was applied to root canal dentin according to the manufacturers' instructions. After the adhesives were applied, solvent was evaporated using either normal air (23±1°C) or warm air (80±1°C) for 20s, and resin composite was placed in the post spaces...
July 2018: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29361502/dentures-wearing-reduce-motion-artifacts-related-to-tongue-movement-in-magnetic-resonance-imaging
#20
Asako Suzuki, Masayasu Ito, Yasuhiko Kawai
PURPOSE: Tongue movement with unstable swallowing cause artifacts on magnetic resonance imaging (MRI). This may be associated with loss of occlusal support. This study aimed to clarify whether motion artifacts can be mitigated by denture wearing during MRI examination in patients without occlusal support, and whether denture wearing affect tongue stability, form, and position were also evaluated. METHODS: Ten subjects without occlusal support (6 male, 4 female; mean age 73...
July 2018: Journal of Prosthodontic Research
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