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Journal of Prosthodontic Research

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https://www.readbyqxmd.com/read/28233692/effect-of-palatal-augmentation-prosthesis-on-pharyngeal-manometric-pressure-in-a-patient-with-functional-dysphagia-a-case-report
#1
Tomohisa Ohno, Ryo Ohno, Ichiro Fujishima
PATIENTS: A 53-year-old institutionalized male patient with a history of postoperative bilateral hypoglossal nerve injury was admitted for treatment of dysphagia. He experienced dysphagia involving oral cavity-to-pharynx bolus transportation because of restricted tongue movement and was treated with a palatal augmentation prosthesis (PAP), which resulted in improved bolus transportation, pharyngeal swallowing pressure, and clearance of oral and pharyngeal residue. The mean pharyngeal swallowing pressure at tongue base with the PAP (145...
February 20, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28223139/the-role-of-il-1-gene-polymorphisms-il1a-il1b-and-il1rn-as-a-risk-factor-in-unsuccessful-implants-retaining-overdentures
#2
Margarida Sampaio Fernandes, Paula Vaz, Ana Cristina Braga, João Carlos Sampaio Fernandes, Maria Helena Figueiral
PURPOSE: Implant-supported overdentures are an alternative predictable rehabilitation method that has a high impact on improving the patient's quality of life. However, some biological complications may interfere with the maintenance and survival of these overdenture implants. The goal of this article was to assess the factors that affect peri-implant success, through a hypothetical prediction model for biological complications of implant overdentures. METHODS: A retrospective observational, prevalence study was conducted in 58 edentulous Caucasian patients rehabilitated with implant overdentures...
February 17, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28216020/investigation-of-accuracy-and-reproducibility-of-abutment-position-by-intraoral-scanners
#3
Shota Fukazawa, Chikayuki Odaira, Hisatomo Kondo
PURPOSE: We examined the accuracy, including trueness and precision, of the intraoral scanners comparing with laboratory scanner to reveal the error level of intraoral scanners. METHODS: Measurements were performed using a computer numerical control coordinate measuring machine (CNCCMM) of the reference models as a control. Subsequently, intraoral scanners and a laboratory scanner were used for measurements of the reference trueness and precision of the distance were evaluated by image analyzing software...
February 16, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28188110/accuracy-and-mechanical-performance-of-passivated-and-conventional-fabricated-3-unit-fixed-dental-prosthesis-on-multi-unit-abutments
#4
Michael Stimmelmayr, Julian Groesser, Florian Beuer, Kurt Erdelt, Gerald Krennmair, Caroline Sachs, Daniel Edelhoff, Jan-Frederik Güth
PURPOSE: The aim of this study was to evaluate the fit and mechanical stability of conventional versus passive fitting 3-unit fixed dental prosthesis (FDP) screw-retained on implants. METHODS: Twenty acrylic models, each with two embedded implants, were fabricated and functioned as patient-models. Impressions were taken and 20 all-ceramic FDPs were pre-fabricated on the plaster casts. Respectively 10 FDPs were fixed on the plaster casts (group 1) and on the patient-models for passive fitting (group 2)...
February 7, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28188109/quantitative-evaluation-of-masseter-muscle-stiffness-in-patients-with-temporomandibular-disorders-using-shear-wave-elastography
#5
Makiko Takashima, Yoshiaki Arai, Atsushi Kawamura, Takafumi Hayashi, Ritsuo Takagi
PURPOSE: The aim of this study was to quantify masseter muscle stiffness in patients with masticatory myofascial pain. METHODS: Stiffness was measured using shear wave elastography, which expresses stiffness as shear wave velocity (Vs). A phantom study was conducted to confirm the reliability of the measuring device. The study participants were 26 females with bilateral masseter muscle pain who were classified into either Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) group Ia (myofascial pain; n=13) or RDC/TMD group Ib (myofascial pain with limited opening; n=13)...
February 7, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28126244/association-between-chewing-stimulated-salivary-flow-under-the-effects-of-atropine-and-mixing-ability-assessed-using-a-color-changeable-chewing-gum
#6
Chieko Kubota, Manabu Kanazawa, Yohei Hama, Yuriko Komagamine, Shunsuke Minakuchi
PURPOSE: To assess the time course of chewing-stimulated salivary flow after oral atropine administration, and determine the association between chewing-stimulated salivary flow and mixing ability using color-changeable chewing gum in dentate adults. METHODS: Ten healthy dentate adults were administered 1mg oral atropine to induce mouth dryness. The subjects' chewing-stimulated salivary flow was assessed using the Saxon test. They were then asked to rinse their mouth with tap water for 15s, and to chew on color-changeable chewing gum for 60s at a constant rate of 60 cycles per min...
January 23, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28126243/the-effect-of-curing-conditions-on-the-dentin-bond-strength-of-two-dual-cure-resin-cements
#7
Atsuko Tagami, Rena Takahashi, Toru Nikaido, Junji Tagami
PURPOSE: The purpose of this study was to determine the effect of the curing condition (i.e., the curing mode and restoration thickness) on the tensile bond strength of a dual-cure resin cement applied to dentin. METHODS: Indirect composite resin disks (1, 2, and 3mm in thickness) were prepared. The irradiance of a halogen light curing unit through each disk was measured by a curing radiometer. A measurement was also taken for the condition with no disk. Following this, two dual-cure resin cements, Panavia F2...
January 23, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28111135/fracture-resistance-of-glazed-full-contour-zls-incisor-crowns
#8
Franz Sebastian Schwindling, Stefan Rues, Marc Schmitter
PURPOSE: To compare the failure behaviour of zirconia-reinforced lithium silicate (Celtra Duo, DeguDent) with that of lithium disilicate (IPS e.max CAD, Ivoclar Vivadent) and feldspar (Mark II, VITA) ceramics. METHODS: Three groups of sixteen glazed maxillary incisor crowns were produced. The inner surfaces of the crowns were etched, then luted to metal dies with self-adhesive cement. Single load-to-failure tests were performed before and after thermo-mechanical ageing...
January 19, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28109797/evaluation-of-sleep-bruxism-with-a-novel-designed-occlusal-splint
#9
Kentaro Hirai, Tomoko Ikawa, Yuko Shigeta, Shuji Shigemoto, Takumi Ogawa
PURPOSE: This report presents our evaluation system that assesses sleep bruxism. The characteristics and fabrication process of our novel designed splint, and the analysis process of our system are presented. METHODS: The subjects were 17 volunteers. The splint was fabricated with a self-curing resin compounded with an amino-acid powder for easy wear on the semi-adjustable articulator, and adjusted for a full-balanced occlusion. An impression of the splint, located on the cast, was taken before and after it was worn...
January 18, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28109796/minimization-of-dental-implant-diameter-and-length-according-to-bone-quality-determined-by-finite-element-analysis-and-optimized-calculation
#10
Nana Ueda, Yoshiyuki Takayama, Atsuro Yokoyama
PURPOSE: The purpose of this study was to investigate the influences of bone quality and implant size on the maximum equivalent elastic strain (MES) in peri-implant bone using finite element (FE) analysis, and to minimize implant size via optimized calculation based on MES. METHODS: Three-dimensional FE models consisting of a mandible and a titanium implant with a superstructure were constructed and applied a vertical load or an oblique load of 60N. We investigated the effects of four variables: the thickness of the cortical bone (C), Young's modulus of the trabecular bone (T), and the diameter (D) and length (L) of the implant...
January 18, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28109795/bone-morphological-effects-on-post-implantation-remodeling-of-maxillary-anterior-buccal-bone-a-clinical-and-biomechanical-study
#11
Nobuhiro Yoda, Keke Zheng, Junning Chen, Wei Li, Michael Swain, Keiichi Sasaki, Qing Li
PURPOSE: This study combines clinical investigation with finite element (FE) analysis to explore the effects of buccal bone thickness (BBT) on the morphological changes of buccal bone induced by the loaded implant. METHODS: One specific patient who had undergone an implant treatment in the anterior maxilla and experienced the buccal bone resorption on the implant was studied. Morphological changes of the bone were measured through a series of cone-beam computed tomography (CT) scans...
January 18, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28073636/prognosis-of-double-crown-retained-removable-dental-prostheses-compared-with-clasp-retained-removable-dental-prostheses-a-retrospective-study
#12
Keita Ishida, Toshifumi Nogawa, Yoshiyuki Takayama, Masayasu Saito, Atsuro Yokoyama
PURPOSE: The present study compared the clinical prognosis of double crown-retained removable dental prostheses (D-DRPs) with that of clasp-retained removable dental prostheses (C-RDPs). METHODS: Clinical records of 201 patients who had received 52 D-RDPs with 144 abutment teeth (D-teeth) and 199 C-RDPs with 399 abutment teeth (C-teeth) at the Prosthetic Dentistry Clinic in Hokkaido University Hospital between April 2005 and June 2015 were analyzed. Survival and complication probabilities of the two types of prostheses and abutment teeth were evaluated using the Kaplan-Meier method and compared using the log-rank test...
January 7, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28063976/effect-of-jaw-opening-exercise-on-prevention-of-temporomandibular-disorders-pain-associated-with-oral-appliance-therapy-in-obstructive-sleep-apnea-patients-a-randomized-double-blind-placebo-controlled-trial
#13
Hiroyuki Ishiyama, Shusuke Inukai, Akira Nishiyama, Masayuki Hideshima, Shuhei Nakamura, Meiyo Tamaoka, Yasunari Miyazaki, Kenji Fueki, Noriyuki Wakabayashi
PURPOSE: There are no studies on the prevention of temporomandibular joint and/or masticatory muscle pain (TMD pain) associated with oral appliance (OA) therapy in patients with obstructive sleep apnea (OSA). The aim of this study was to determine the effect of jaw-opening exercise on TMD pain associated with OA therapy in OSA patients. METHODS: Twenty-five OSA patients without pain-related TMD were consecutively enrolled into a two-arm, randomized, double-blind, placebo-controlled trial...
January 4, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28057443/analysis-of-gaze-points-for-mouth-images-using-an-eye-tracking-system
#14
Mayu Yamamoto, Katsunori Torii, Masaki Sato, Junko Tanaka, Masahiro Tanaka
PURPOSE: We aimed to clarify whether people stare at non-esthetic restorations by analyzing the gaze point of laypersons looking at mouth images with intraoral non-esthetic restoration. METHODS: The gaze points of 47 laypersons who do not visit dentists were measured using an eye tracker. The stimuli were 18 photographs of mouths with or without a non-esthetic tooth restoration, each randomly shown for 5s. The analysis sites included a tooth with non-esthetic restoration and the same tooth on the opposite side of the mouth...
January 2, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28027873/the-ijp-jps-workshop-for-young-prosthodontic-educators
#15
EDITORIAL
Kazuyoshi Baba
No abstract text is available yet for this article.
December 24, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27989397/masticatory-function-parameters-in-patients-with-varying-degree-of-mandibular-bone-resorption
#16
Raissa Micaella Marcello-Machado, Amália Machado Bielemann, Gustavo Giacomelli Nascimento, Luciana de Rezende Pinto, Altair Antoninha Del Bel Cury, Fernanda Faot
PURPOSE: This cross-sectional study analyzes how bone resorption affects the masticatory function and investigates the relation between perceived and measured masticatory function. METHODS: Thirty complete dentures wearers were divided in two groups according to mandible bone atrophy based on the classification criteria from Cawood & Howell. Retention and stability of the mandibular complete denture, masticatory performance (MP) indexes (X_50 and B) and masticatory efficiency (ME, sieves 4 and 2...
December 15, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27964932/effects-of-different-electrolytes-for-micro-arc-oxidation-on-the-bond-strength-between-titanium-and-porcelain
#17
Xiaohui Yuan, Fei Tan, Haitao Xu, Shaojun Zhang, Fuzhen Qu, Jie Liu
PURPOSE: The aim of this study is to investigate the effects of different electrolytes on the titanium-porcelain bond strength after micro-arc oxidation (MAO) treatment. METHODS: Three electrolytes at the same concentration were used as MAO reaction solutions: Na2SiO3, KF, and MgSiF6. Blasting treatment was chosen as a control. After MAO treatment in each electrolyte, the titanium-porcelain bond strengths were measured by the three-point bending test, as described in ISO 9693...
December 7, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27964931/the-effect-of-extended-aging-on-the-optical-properties-of-different-zirconia-materials
#18
Tariq F Alghazzawi
PURPOSE: The purpose of this study was to determine if the optical properties of zirconia and glass-ceramic (e.max) were affected by low-temperature degradation (aging). METHODS: Experiment samples were fabricated with seven zirconia brands (n=10): Zenostar, Zirlux, Katana, Bruxzir, DD-BioZX(2), DD-cubeX(2), NexxZr; and e.max were used as a control. This resulted in a total of 80 samples in the experiment. The L*, a* and b* were measured for each sample, and then the optical properties including translucency parameter (TP), contrast ratio (CR), and opalescence parameter (OP) were calculated...
December 7, 2016: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/27916472/generation-of-neural-cells-using-ipscs-from-sleep-bruxism-patients-with-5-ht2a-polymorphism
#19
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
#20
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
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