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https://www.readbyqxmd.com/read/27917567/effects-of-rinsing-with-arginine-bicarbonate-and-urea-solutions-on-initial-enamel-lesions-in-situ
#1
Yang Yu, Xiaoling Wang, Chunling Ge, Bing Wang, Chuoyue Cheng, Ye-Hua Gan
OBJECTIVE: The aim of this study was to investigate the effects of rinsing with arginine or urea solution on initial enamel lesions in situ. METHODS: Fourteen subjects wore mandibular removable partial dentures embedded with bovine enamel blocks with artificial enamel lesions were included. The experiment included four 4-week rinsing periods with a 10-day washout period between each rinsing period. In each rinsing period, the subjects rinsed after meal or snack using water, or 2% arginine bicarbonate, or 1% urea, or 0...
December 5, 2016: Oral Diseases
https://www.readbyqxmd.com/read/27914668/three-dimensional-finite-element-analysis-of-implant-assisted-removable-partial-dentures
#2
Ju-Won Eom, Young-Jun Lim, Myung-Joo Kim, Ho-Beom Kwon
STATEMENT OF PROBLEM: Whether the implant abutment in implant-assisted removable partial dentures (IARPDs) functions as a natural removable partial denture (RPD) tooth abutment is unknown. PURPOSE: The purpose of this 3-dimensional finite element study was to analyze the biomechanical behavior of implant crown, bone, RPD, and IARPD. MATERIAL AND METHODS: Finite element models of the partial maxilla, teeth, and prostheses were generated on the basis of a patient's computed tomographic data...
November 30, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27892564/zirconia-based-dental-ceramics-structure-mechanical-properties-biocompatibility-and-applications
#3
Chandkiram Gautam, Jarin Joyner, Amarendra Gautam, Jitendra Rao, Robert Vajtai
Zirconia (ZrO2) based dental ceramics have been considered to be advantageous materials with adequate mechanical properties for the manufacturing of medical devices. Due to its very high compression strength of 2000 MPa, ZrO2 can resist differing mechanical environments. During the crack propagation on the application of stress on the surface of ZrO2, a crystalline modification diminishes the propagation of cracks. In addition, zirconia's biocompatibility has been studied in vivo, leading to the observation of no adverse response upon the insertion of ZrO2 samples into the bone or muscle...
November 28, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27881308/technique-for-transferring-the-path-of-insertion-of-a-removable-partial-denture-to-a-cad-cam-generated-implant-surgical-template
#4
Thomas L Kwun, Michael Razzoog
A technique is described that uses a surveyor, gutta percha points, and a computer-aided design and computer-aided manufacturing (CAD-CAM)-guided implant surgery system to predetermine and transfer the ideal angulation of the implant to be placed.
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27880023/effect-of-cyclic-fatigue-tests-on-aging-and-their-translational-implications-for-survival-of-all-ceramic-tooth-borne-single-crowns-and-fixed-dental-prostheses
#5
REVIEW
Mutlu Özcan, Moritz Jonasch
PURPOSE: The objective of this systematic review was to elaborate the aging effect of cyclic fatigue tests on mechanical durability of all-ceramic single crowns and fixed dental prostheses (FDP). MATERIALS AND METHODS: Original scientific papers published in the MEDLINE (PubMed) database in English between 01/01/1950 and 12/31/2013 on cyclic loading on all-ceramics were included in this systematic review. The following MeSH terms, search terms, and their combinations were used: "in vitro," "stress mechanical," "crowns," "denture, partial, fixed," "dentistry," "fatigue," "all-ceramic," "zirconia," "fixed dental prosthesis," "FDP," "bridges," and "cyclic loading...
November 23, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/27870167/design-of-complete-dentures-by-adopting-cad-developed-for-fixed-prostheses
#6
Yanfeng Li, Weili Han, Jing Cao, Yuan Iv, Yue Zhang, Yishi Han, Yi Shen, Zheng Ma, Huanyue Liu
The demand for complete dentures is expected to increase worldwide, but complete dentures are mainly designed and fabricated manually involving a broad series of clinical and laboratory procedures. Therefore, the quality of complete dentures largely depends on the skills of the dentist and technician, leading to difficulty in quality control. Computer-aided design and manufacturing (CAD/CAM) has been used to design and fabricate various dental restorations including dental inlays, veneers, crowns, partial crowns, and fixed partial dentures (FPDs)...
November 21, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/27861664/comparison-of-treatment-outcomes-in-partially-edentulous-patients-with-implant-supported-fixed-prostheses-and-removable-partial-dentures
#7
Toshifumi Nogawa, Yoshiyuki Takayama, Keita Ishida, Atsuro Yokoyama
PURPOSE: The aim of this study was to compare masticatory performance, occlusal force, and oral health-related quality of life (OHRQoL) in patients with mandibular distal-extension edentulism between those with implant-supported fixed prostheses (ISFPs) and those with removable partial dentures (RPDs), and to evaluate relationships among them. MATERIALS AND METHODS: Subjects were recruited from patients using ISFPs or RPDs for mandibular distal-extension edentulism...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27861651/the-influence-of-bone-quality-on-the-biomechanical-behavior-of-a-tooth-implant-fixed-partial-denture-a-three-dimensional-finite-element-analysis
#8
Alexander Tsouknidas, Dimitrios Giannopoulos, Savvas Savvakis, Nikolaos Michailidis, Evdokia Lympoudi, Dimitrios Fytanidis, Argirios Pissiotis, Konstantinos Michalakis
PURPOSE: The purpose of this study was to evaluate whether or not bone quality has an effect on the biomechanical behavior of a tooth connected to an implant, when a rigid and a nonrigid attachment are used. MATERIALS AND METHODS: Models of fixed partial dentures supported by a tooth and an implant were developed. These models were then imported into finite element analysis software to study the impact of forces on different types of attachments (rigid vs nonrigid) and bones (types 1 to 4)...
November 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27858554/narrow-diameter-3-0-mm-versus-standard-diameter-4-0-and-4-5-mm-implants-for-the-splinted-partial-fixed-restoration-of-posterior-jaws-a-5-year-retrospective-cohort-study
#9
Francesco Pieri, Caterina Forlivesi, Ernesto Caselli, Giuseppe Corinaldesi
BACKGROUND: Evidence concerning the predictability of narrow-diameter implants (NDIs) (< 3.3 mm) to restore partially edentulous posterior areas is limited. The aim of this study was to compare the 5-year outcomes of NDIs (3.0 mm) and standard-diameter implants (SDIs) (4.0-4.5 mm) supporting fixed partial dentures (FPDs) in posterior jaws. METHODS: All patients treated with at least two adjacent NDIs or SDIs according to the available bone thickness and with a minimum follow-up of 5 years after placement were invited to undergo a clinical and radiologic examination...
November 18, 2016: Journal of Periodontology
https://www.readbyqxmd.com/read/27829765/comparative-study-on-the-tensile-bond-strength-and-marginal-fit-of-complete-veneer-cast-metal-crowns-using-various-luting-agents-an-in-vitro-study
#10
B Devi Parameswari, M Rajakumar, G Lambodaran, Shyam Sundar
INTRODUCTION: Several commercially available luting agents are used to cement the dental restorations such as intra-coronal, extra-coronal, and fixed partial dentures. Tensile bond strength (TBS) and accurate marginal fit are the essential factors to determine the good clinical results in fixed prosthesis. The retentivity of the luting cements is assessed by their adhesive capacity over the tooth surface and metal surface. Generally, the adhesive ability has been evaluated with in vitro testing, with tensile bond tests...
October 2016: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/27829758/in-vitro-comparative-evaluation-of-mechanical-properties-of-temporary-restorative-materials-used-in-fixed-partial-denture
#11
D Saisadan, P Manimaran, P K Meenapriya
INTRODUCTION: Materials used to fabricate provisional restorations can be classified as acrylics or resin composites. Provisional crows can be either prefabricated or custom made. ACRYLICS: These materials have been used to fabricate provisional restorations since the 1930s and usually available as powder and liquid. They are the most commonly used materials today for both single-unit and multiple-unit restorations. In general, their popularity is due to their low cost, acceptable esthetics, and versatility...
October 2016: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/27826391/effect-of-gluma-desensitizer-on-the-retention-of-full-metal-crowns-cemented-with-rely-x-u200-self-adhesive-cement
#12
Shirin Lawaf, Ezatallah Jalalian, Roshanak Roshan, Arash Azizi
PURPOSE: Considering the importance of retention in the success and long-term clinical service of fixed partial dentures (FPDs) as well as the existing controversy regarding the effect of GLUMA desensitizer on the retention of full metal crowns cemented with RelyX U200 self-adhesive cement, this study aimed to assess the effect of GLUMA desensitizer on the retention of full metal crowns cemented using RelyX U200. MATERIALS AND METHODS: In this experimental study, 20 sound human premolars were prepared; a 0...
October 2016: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/27825678/microbiological-and-clinical-assessment-of-the-abutment-and-non-abutment-teeth-of-partial-removable-denture-wearers
#13
Luciana Costa, Cássio do Nascimento, Valéria Oliveira Pagnano de Souza, Vinícius Pedrazzi
OBJECTIVE: The aim of this study was assessing the changes in both clinical and microbiological parameters of healthy individuals after rehabilitation with removable partial denture (RPD). DESIGN: 11 women received unilateral or bilateral free-end saddle RPD in the mandibular arch. Clinical and microbiological parameters of abutment, non-abutment, and antagonist teeth were assessed at baseline (RPD installation) and after 7, 30, 90, and 180days of function. The Checkerboard DNA-DNA hybridization technique was used to identify and quantify up to 43 different microbial species from subgingival biofilm samples...
November 3, 2016: Archives of Oral Biology
https://www.readbyqxmd.com/read/27824981/does-the-material-stiffness-of-novel-high-performance-polymers-for-fixed-partial-dentures-influence-their-biomechanical-behavior
#14
Ludger Keilig, Helmut Stark, Christoph Bourauel
PURPOSE: To investigate the influence of framework materials with different elasticity moduli on the biomechanical performance of fixed partial dentures (FPDs). MATERIALS AND METHODS: A tooth-anchored three-unit FPD and surrounding tissues were modeled in two variants (veneered/full anatomical FPD) and loaded on the central unit. Three different framework materials (titanium, zirconia, high-performance polymer) were simulated. RESULTS: The polymer framework resulted in reduced framework stresses and increased veneering stresses...
November 2016: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/27824978/fractographic-analysis-of-a-clinically-failed-fpd-after-10-years-in-service
#15
Youssef S Al Jabbari
This study retrieved and analyzed by scanning electron microscopy (SEM) and energy-dispersive x-ray spectroscopy (EDS) the failure of a single four-unit fixed partial denture (FPD). Low SEM magnifications revealed a smooth/featureless fracture surface, indicating brittle fracture. Higher magnifications revealed a small fatigue fracture region located on the inferior part of the connector. EDS analysis indicated that the FPD alloy was gold-based. Additionally, SEM showed segregation of small spherical particles at grain boundaries of the alloy, with high aluminum and oxygen content...
November 2016: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/27824975/analysis-of-endodontic-complications-following-fixed-prosthodontic-rehabilitation
#16
Zeynep Uzgur, Recep Uzgur, Hakan Çolak, Ertuğrul Ercan, Mehmet Dallı
PURPOSE: The aim of this study was to determine endodontic treatment needs and types of endodontic disease following fixed prosthodontic treatment 24 hours after tooth preparation, 1 week after tooth preparation, 1 month after placement, and 6 months after placement. MATERIALS AND METHODS: Study groups consisted of patients who attended a university dental hospital department of prosthodontics for fixed prosthodontic treatment from January 2011 to December 2013...
November 2016: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/27822468/retention-strength-after-compressive-cyclic-loading-of-five-luting-agents-used-in-implant-supported-prostheses
#17
Angel Alvarez-Arenal, Ignacio Gonzalez-Gonzalez, Hector deLlanos-Lanchares, Aritza Brizuela-Velasco, Javier Pinés-Hueso, Joseba Ellakuria-Echebarria
The purpose of this study was to evaluate and compare the retention strength of five cement types commonly used in implant-retained fixed partial dentures, before and after compressive cyclic loading. In five solid abutments screwed to 5 implant analogs, 50 metal Cr-Ni alloy copings were cemented with five luting agents: resin-modified glass ionomer (RmGI), resin composite (RC), glass ionomer (GI), resin urethane-based (RUB), and compomer cement (CC). Two tensile tests were conducted with a universal testing machine, one after the first luting of the copings and the other after 100,000 cycles of 100 N loading at 0...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27814254/implant-assisted-removable-partial-dentures-practical-considerations
#18
Aaron J Omura, Vaibhav Latthe, Mark M Marin, David R Cagna
At the heart of prosthodontic treatment planning must be a sound understanding of the quality and reliability of the prosthodontic foundation. Implant prosthodontics relies almost entirely on the biological and mechanical properties of an osseous foundation. Initiation of therapy in the absence of a healthy and stable prosthodontic foundation risks unintended and suboptimal treatment outcomes. For conventional removable partial denture (RPD) therapy, consideration must be given to interactions between the soft and hard tissues available to support and stabilize planned prostheses...
November 2016: General Dentistry
https://www.readbyqxmd.com/read/27805893/hypophosphatasia-evaluation-of-size-and-mineral-density-of-exfoliated-teeth
#19
S Hayashi-Sakai, N Numa-Kinjoh, M Sakamoto, J Sakai, J Matsuyama, T Mitomi, T Sano-Asahito, S Kinoshita-Kawano
OBJECTIVE: Most cases of hypophosphatasia (HPP) exhibit early loss of primary teeth. Results of micro-computed tomography (micro-CT) analysis of teeth with HPP have not yet been reported. The purpose of the present study was to describe the size and mineral density distribution and mapping of exfoliated teeth with HPP using micro CT. STUDY DESIGN: Seven exfoliated teeth were obtained from a patient with HPP. Exfoliated teeth sizes were measured on micro CT images and mineral densities of the mandibular primary central incisors were determined...
2016: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/27799680/analysis-of-dysphagia-risk-using-the-modified-dysphagia-risk-assessment-for-the-community-dwelling-elderly
#20
Haewon Byeon
[Purpose] The elderly are susceptible to dysphagia, and complications can be minimized if high-risk groups are screened in early stages and properly rehabilitated. This study provides basic material for the early detection and prevention of dysphagia by investigating the risks of dysphagia and related factors in community-dwelling elders. [Subjects and Methods] Participants included 325 community-dwelling elderly people aged 65 or older. The modified dysphagia risk assessment for the community-dwelling elderly was used to assess dysphagia risk...
September 2016: Journal of Physical Therapy Science
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