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Journal of Prosthodontic Research

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https://www.readbyqxmd.com/read/27916472/generation-of-neural-cells-using-ipscs-from-sleep-bruxism-patients-with-5-ht2a-polymorphism
#1
Yurie Hoashi, Satoshi Okamoto, Yuka Abe, Takashi Matsumoto, Junichi Tanaka, Yuya Yoshida, Kent Imaizumi, Kenji Mishima, Wado Akamatsu, Hideyuki Okano, Kazuyoshi Baba
PURPOSE: Sleep bruxism (SB) is classified as a sleep-related movement disorder characterized by grinding and clenching of the teeth during sleep, which is responsible for a variety of clinical problems such as abnormal tooth attrition and fracture of teeth or roots. Little is known about the etiology of SB. Our previous study identified a genomic association of the serotonin 2A receptor (5-HT2A) single nucleotide polymorphism (SNP), rs6313 C>T, with SB, where the C allele carrier is associated with a 4...
December 1, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27888096/development-validation-and-psychometric-properties-of-the-arabic-version-of-the-orofacial-esthetic-scale-oes-ar
#2
Mohammed Nasser Alhajj, Abdullah Ghalib Amran, Esam Halboub, Abdulghani Ali Al-Basmi, Fawaz Abdullah Al-Ghabri
PURPOSE: This study aimed at developing the Arabic version of the Orofacial Esthetic Scale (OES-Ar) and to investigate its psychometric properties among Arabic-speaking population with and without esthetic impairments. METHODS: Translation and cross-cultural adaptation was done according to the standard guidelines. Internal consistency was assessed on 230 participants. For test-retest reliability, 50 subjects with natural teeth were recalled within a period of 2 weeks...
November 22, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27866879/differences-in-bite-force-between-dolichofacial-and-brachyfacial-individuals-side-of-mastication-gender-weight-and-height
#3
Paulo Roberto Quiudini, Daniel Humberto Pozza, Ary Dos Santos Pinto, Mauricio Ferraz de Arruda, Antonio Sergio Guimarães
PURPOSE: Due to the bite force importance in functionality of the masticatory system, this study aimed to characterize it in dolichofacial and brachyfacial individuals. METHODS: A sample comprised by 190 patients was divided into two groups: 90 severe dolichofacial, and 100 severe brachyfacial individuals classified according to the VERT index and the face height ratio (Jarabak quotient). Bite force was measured by using an adjusted digital dynamometer and proper methodology...
November 17, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27825561/clasp-fabrication-using-one-process-molding-by-repeated-laser-sintering-and-high-speed-milling
#4
Toyoki Nakata, Hidemasa Shimpo, Chikahiro Ohkubo
PURPOSE: A single machine platform that integrates repeated laser sintering and high-speed milling for one-process molding has been developed. METHODS: The Akers clasp was designed using the CAD system (DWOS Partial Frameworks, Dental Wings) and fabricated using repeated laser sintering and a high-speed milling machine (LUMEX Advance-25, Matsuura) with 50-μm Co-Cr particles (CAM clasp). As controls, cast clasps of the same forms were also prepared using conventional casting methods with a Co-Cr alloy and CP titanium Grade 3...
November 4, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27780685/a-new-operative-method-for-obtaining-full-arch-prostheses-for-immediate-loading-dental-implants
#5
Guilherme Paulo Scarpel de Mello, Elaine Duarte Artuso de Mello, Pedro Henrique Corazza
PURPOSE: Implant supported full-arch immediate prosthesis (also called the immediate Brånemark protocol) revolutionized dental clinical practice due to the aesthetic/functional benefits it offers to the patient. This work presents a simplified and efficient technique for implant supported full-arch immediate prosthesis fabrication. METHODS: After diagnosing the necessity of the protocol, the implants were installed with a minimum torque of 35Ncm. For implant impression, the use of previously prepared castable cylinders (dispensing with impression posts), and a U-shaped acrylic (Mello technique) generated a cast without distortion...
October 22, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27777071/effect-of-phytic-acid-etchant-on-resin-dentin-bonding-monomer-penetration-and-stability-of-dentin-collagen
#6
Kalyan Kong, Noriko Hiraishi, Mohannad Nassar, Masayuki Otsuki, Cynthia K Y Yiu, Junji Tagami
PURPOSE: Phytic acid (IP6) works well as an etchant in dentin bonding to remove the smear layer due to its acidity and chelating effect. This study compared the etching effect of IP6 with phosphoric acid (PA) and ethylenediaminetetraacetic acid (EDTA) on resin-dentin bond strength, micromorphology of the etched dentin surface and nanoleakage formation along resin-dentin interfaces and compared the protecting effect against collagen degradation. METHODS: Dentin disks and flat dentin surfaces were obtained from extracted human teeth...
October 21, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27777070/analysis-of-correlation-between-height-of-residual-ridge-and-bone-density-of-residual-ridge-crest-at-edentulous-mandible-using-computed-tomography
#7
Sayumi Inoue, Misao Kawara, Takashi Iida, Masatoshi Iwasaki, Osamu Komiyama, Takashi Kaneda
PURPOSE: The aim of this study was to investigate the correlation between bone density of the edentulous mandibular ridge crest and residual bone height in edentulous subjects using multidetector computed tomography (MDCT) images. METHODS: A total of 194 bilateral MDCT images from 97 individuals with an edentulous mandible were selected for analysis. The residual ridge ratio (RRR), the CT values at the residual ridge crest, and the CT values at the lowest point of the mandible measured from MDCT images at molar region...
October 21, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27771189/evaluation-of-the-accuracy-of-extraoral-laboratory-scanners-with-a-single-tooth-abutment-model-a-3d-analysis
#8
Federico Mandelli, Enrico Gherlone, Giorgio Gastaldi, Marco Ferrari
PURPOSE: The aim of this study was to compare the accuracy of different laboratory scanners using a calibrated coordinate measuring machine as reference. METHODS: A sand blasted titanium reference model (RM) was scanned with an industrial 3D scanner in order to obtain a reference digital model (dRM) that was saved in the standard tessellation format (.stl). RM was scanned ten times with each one of the tested scanners (GC Europe Aadva, Zfx Evolution, 3Shape D640, 3Shape D700, NobilMetal Sinergia, EGS DScan3, Open Technologies Concept Scan Top) and all the scans were exported in ...
October 19, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27717749/effect-of-self-and-dual-curing-on-degree-of-conversion-and-crosslink-density-of-dual-cure-core-build-up-materials
#9
Duygu Karakis, Arzu Zeynep Yıldırım-Bicer, Arife Dogan, Haluk Koralay, Sukru Cavdar
PURPOSE: Dual-cure core build-up resins have been developed to take advantages of both self and light-cured resin. The aim of present study was to determine the polymerization characteristics of self and dual-cured modes of dual-cure core build-up composites evaluating degree of conversion (DC) and crosslink density by measurement of glass-transition temperature (Tg) and hardness decrease in ethanol. METHODS: Clearfil Dc Core Automix (CLF) and Grandio Core Dc (GR) core build-up resins were selected...
October 4, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27720168/challenges-for-stem-cell-based-regenerative-prosthodontics
#10
Kunimichi Niibe, Fumio Suehiro, Masamitsu Oshima, Masahiro Nishimura, Takuo Kuboki, Hiroshi Egusa
No abstract text is available yet for this article.
October 3, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27667555/effect-of-geometry-on-deformation-of-anterior-implant-supported-zirconia-frameworks-an-in-vitro-study-using-digital-image-correlation
#11
Nuno Calha, Ana Messias, Fernando Guerra, Beatriz Martinho, Maria Augusta Neto, Pedro Nicolau
PURPOSE: To evaluate the effect of geometry on the displacement and the strain distribution of anterior implant-supported zirconia frameworks under static load using the 3D digital image correlation method. METHODS: Two groups (n=5) of 4-unit zirconia frameworks were produced by CAD/CAM for the implant-abutment assembly. Group 1 comprised five straight configuration frameworks and group 2 consisted of five curved configuration frameworks. Specimens were cemented and submitted to static load up to 200N...
September 22, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27650106/non-metal-clasp-dentures-more-evidence-is-needed-for-optimal-clinical-application
#12
Kenji Fueki
No abstract text is available yet for this article.
September 17, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27615425/biomechanical-analysis-of-immediately-loaded-implants-according-to-the-all-on-four-concept
#13
Satoshi Horita, Tsutomu Sugiura, Kazuhiko Yamamoto, Kazuhiro Murakami, Yuichiro Imai, Tadaaki Kirita
PURPOSE: The purpose of this study was to investigate the biomechanical behavior of immediately loaded implants in an edentulous mandible according to the "All-on-Four" concept. METHODS: A 3D-finite element model of an edentulous mandible was constructed. Four implants were placed between the bilateral mental foramen according to "All-on-Four" concept. A framework made of titanium or acrylic resin between the bilateral first molars was modeled. Immediate loading and a delayed loading protocol were simulated...
September 5, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27575994/effect-of-electrical-discharge-machining-on-dental-y-tzp-ceramic-resin-bonding
#14
Nergiz Rona, Murat Yenisey, Gokhan Kucukturk, Hakan Gurun, Can Cogun, Ziya Esen
PURPOSE: The study determined (i) the effects of electrical discharge machining (EDM) on the shear-bond strength (SBS) of the bond between luting resin and zirconia ceramic and (ii) zirconia ceramic's flexural strength with the three-point bending (TPB) test. METHODS: Sixty 4.8mm×4.8mm×3.2mm zirconia specimens were fabricated and divided into four groups (n=15): SBG: sandblasted+silane, TSCG: tribochemical silica coated+silane, LTG: Er:YAG laser treated+silane, EDMG: EDM+silane...
August 27, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27561445/complications-causing-patients-to-discontinue-using-oral-appliances-for-treatment-of-obstructive-sleep-apnea
#15
Keisuke Nishigawa, Rika Hayama, Yoshizo Matsuka
PURPOSE: Oral appliances (OAs) are commonly used as a noninvasive treatment for obstructive sleep apnea syndrome (OSAS). These devices are worn during sleep and create mandibular anterior traction to enlarge the upper airway. Continuous use of the device is essential for the success of OA therapy, but some patients stop using the OA for various reasons. The purpose of this research was to investigate complications in OA therapy that might prevent continuous use of these devices. METHODS: The progress of 90 OSAS patients who visited Tokushima University Hospital and underwent OA therapy was investigated with a mailed questionnaire...
August 20, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27553123/accurate-shade-image-matching-by-using-a-smartphone-camera
#16
Weng-Kong Tam, Hsi-Jian Lee
PURPOSE: Dental shade matching by using digital images may be feasible when suitable color features are properly manipulated. Separating the color features into feature spaces facilitates favorable matching. We propose using support vector machines (SVM), which are outstanding classifiers, in shade classification. METHODS: A total of 1300 shade tab images were captured using a smartphone camera with auto-mode settings and no flash. The images were shot at angled distances of 14-20cm from a shade guide at a clinic equipped with light tubes that produced a 4000K color temperature...
August 20, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27543041/shear-bond-strength-of-a-denture-base-acrylic-resin-and-gingiva-colored-indirect-composite-material-to-zirconia-ceramics
#17
Kei Kubochi, Futoshi Komine, Ryosuke Fushiki, Shogo Yagawa, Serina Mori, Hideo Matsumura
PURPOSE: To evaluate the shear bond strengths of two gingiva-colored materials (an indirect composite material and a denture base acrylic resin) to zirconia ceramics and determine the effects of surface treatment with various priming agents. METHODS: A gingiva-colored indirect composite material (CER) or denture base acrylic resin (PAL) was bonded to zirconia disks with unpriming (UP) or one of seven priming agents (n=11 each), namely, Alloy Primer (ALP), Clearfil Photo Bond (CPB), Clearfil Photo Bond with Clearfil Porcelain Bond Activator (CPB+Act), Metal Link (MEL), Meta Fast Bonding Liner (MFB), MR...
August 16, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27514568/reliability-and-validity-of-the-patient-disability-oriented-diagnostic-nomenclature-system-for-prosthetic-dentistry
#18
Yoshizo Matsuka, Yoshiyuki Hagiwara, Katsushi Tamaki, Hisahiro Takeuchi, Masanori Fujisawa, Takahiro Ono, Yoshihiro Tsukiyama, Kan Nagao, Kazuhiro Tsuga, Hideki Aita, Hisatomo Kondo, Kenji Fueki, Hiroaki Tsukasaki, Keisuke Nishigawa, Shogo Ozawa, Rika Kuwatsuru, Hajime Minakuchi, Toshimitsu Iinuma, Takashi Matsuura, Kanji Ishibashi, Shigehisa Fujii, Toshihiro Hirai, Keiichi Sasaki, Hirofumi Yatani, Yoshimasa Igarashi, Yuji Sato, Tetsuo Ichikawa, Tetsuo Yamamori, Takuo Kuboki, Kazuyoshi Baba, Kiyoshi Koyano, Hironobu Sato, Hideo Matsumura
PURPOSE: The Japan Prosthodontic Society (JPS) has proposed a new diagnostic nomenclature system (DNS), based on pathogenesis and etiology, to facilitate and improve prosthodontic treatment. This system specifies patient disability and the causative factor (i.e. "B (disability) caused by A (causative factor)"). The purpose of this study was to examine the reliability and validity of this DNS. STUDY SELECTION: The JPS Clinical Guideline Committee assessed mock patient charts and formulated disease names using the new DNS...
August 8, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27484816/three-dimensional-analysis-of-marginal-and-internal-fit-of-copings-fabricated-with-polyetherketoneketone-pekk-and-zirconia
#19
So-Yeon Bae, Jin-Young Park, Il-Do Jeong, Hae-Young Kim, Ji-Hwan Kim, Woong-Chul Kim
PURPOSE: The purpose of this in vitro study was to compare and analyze the three-dimensional marginal and internal fit of PEKK and zirconia copings. METHODS: Two acrylic models of the right maxillary canine, first molar were fabricated as master dies and duplicated by one-step dual viscosity impressions. Five stone replicas from each model were digitized with a blue-light scanner and copings were machined from Pekkton and Zirconia blanks. The inner surface of all the copings and two original acrylic models were digitized by a highly accurate optical scanner...
July 30, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27474364/a-double-blind-randomized-clinical-trial-comparing-lingualized-and-fully-bilateral-balanced-posterior-occlusion-for-conventional-complete-dentures
#20
Yasuhiko Kawai, Nobuyuki Ikeguchi, Asako Suzuki, Azusa Kuwashima, Ryuji Sakamoto, Yuichi Matsumaru, Suguru Kimoto, Morio Iijima, Jocelyne Sylvia Feine
PURPOSE: A lingualized occlusion (LO) for complete dentures reduces lateral inferences and occlusal force contacts and direction; thus, LO is theorized to be more suitable for patients with compromised ridges than fully bilateral balanced articulation (FBBA). However, no studies have yet provided evidence to support LO in edentate patients with compromised alveolar ridges. The purpose of this study was to compare LO and FBBA in edentulous individuals with compromised ridges. METHODS: Sixty edentulous individuals were randomly allocated into groups and received dentures with either LO or FBBA...
July 26, 2016: Journal of Prosthodontic Research
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