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Journal of Prosthodontic Research

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
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
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
Kazuyoshi Baba
No abstract text is available yet for this article.
December 24, 2016: Journal of Prosthodontic Research
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
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
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
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
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
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
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
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
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
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
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
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
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
Kenji Fueki
No abstract text is available yet for this article.
October 2016: Journal of Prosthodontic Research
Anchal Qanungo, Meena Ajay Aras, Vidya Chitre, Ashwin Mysore, Bhavya Amin, Sohil Rajkumar Daswani
PURPOSE: The aim of this article is to review available literature on the clinical procedure of immediate dentine sealing for indirect bonded restorations. STUDY SELECTION: More than 40 articles reporting the technique, studies, outcomes, etc. were reviewed after PUBMED/MEDLINE search, most of them addressing the specific situation of dentin bonding for indirect restorations. RESULTS: It is known that tooth preparation for indirect bonded restorations can result in significant dentin exposures...
October 2016: Journal of Prosthodontic Research
Zahid Iqbal, Muhammad Sohail Zafar
PURPOSE: The aim of this review is to investigate the current state of knowledge on the incorporation of antifungal agents into the tissue conditioners for the treatment of denture induced stomatitis. STUDY SELECTION: Studies reporting the incorporation of antifungal/antimicrobial agents in to tissue conditioners were included in the review. In order to search the studies on the topic "incorporation of antifungal agents in tissue conditioners for the treatment of denture induced stomatitis" ISI web of science, PubMed/MEDLINE, and Google-Scholar databases were searched from 1970 up to and including July 2015 using various keywords such as antifungal agents, tissue conditioners, Candida albicans, denture stomatitis, etc...
October 2016: Journal of Prosthodontic Research
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