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Journal of Prosthetic Dentistry

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https://www.readbyqxmd.com/read/27914670/comparison-of-masticatory-efficacy-among-complete-denture-wearers-with-two-adhesives-and-dentate-individuals-a%C3%A2-randomized-crossover-double-blind-clinical-trial
#1
Carlos Torres-Sánchez, Vanessa Montoya-Salazar, Daniel Torres-Lagares, Jose Luis Gutierrez-Pérez, Emilio Jimenez-Castellanos
STATEMENT OF PROBLEM: The masticatory efficacy between dentate and edentulous individuals with and without the use of dental adhesives has been little studied. A comparative study of the addition of various agents of synthetic adhesion (vinyl methyl ether versus polyvinyl acetate) to these adhesives is needed. PURPOSE: The purpose of this randomized, crossover, double-blind clinical trial was to compare the masticatory efficacy of wearers of complete dentures with and without dental adhesives of 2 different compositions and that of dentate controls...
November 30, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27914669/effect-of-different-thermo-light-polymerization-on-flexural-strength-of-two-glass-ionomer-cements-and-a-glass-carbomer%C3%A2-cement
#2
Kristina Gorseta, Ali Borzabadi-Farahani, Alireza Moshaverinia, Domagoj Glavina, Edward Lynch
STATEMENT OF PROBLEM: Whether polymerization lights can be used for heating glass ionomer cements (GICs) or glass carbomer (GCP) to improve their mechanical properties is not well established. PURPOSE: The purpose of this in vitro study was to assess the effect of thermo-light polymerization on the flexural strength (FS) of 2 GICs (Fuji IX GP Fast, Ketac Molar) and a GCP. MATERIAL AND METHODS: Specimens (n=10) were prepared in stainless steel molds (2×2×25 mm), compressed, exposed to 3 polymerization lights (500, 1000, 1200 mW/cm(2)) for 2 cycles of 40 seconds on each side, and stored in petroleum jelly (37°C, 24 hours)...
November 30, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27914668/three-dimensional-finite-element-analysis-of-implant-assisted-removable-partial-dentures
#3
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/27889076/impression-technique-for-a-complete-arch-prosthesis-with-multiple-implants-using-additive-manufacturing-technologies
#4
Marta Revilla-León, José Luis Sánchez-Rubio, Jesús Oteo-Calatayud, Mutlu Özcan
This article describes an impression technique for a complete-arch prosthesis supported by multiple implants where additive manufacturing technologies were used to fabricate a splinting framework and a custom tray. The technique presented uses a shim method to control the homogenous splinting acrylic resin and impression material during the procedure, thereby reducing laboratory and chairside time and the number of impression copings and laboratory analogs needed.
November 23, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27881241/complications-after-use-of-elastomeric-pressure-indicating-media-at-24-hour-follow-up-visit-for-immediate-maxillary-complete-removable-dental-prosthesis-a-clinical-report
#5
Lisa Kane, Elizabeth A Van Tubergen, Sindhura A Allareddy
Various pressure-indicating media are available to assess the adaptation of the intaglio surface of a removable dental prosthesis at the insertion and follow-up appointments. This clinical report describes the use of an elastomer that entered the maxillary sinus through an undetected oroantral communication at the 24-hour follow-up for an immediate maxillary complete removable dental prosthesis. A Caldwell-Luc sinusotomy procedure was required to remove the material, and the patient required over 1 year of healing time before his reported symptoms resolved...
November 20, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27866699/recording-the-trajectory-of-mouth-opening-and-closing-for-the-fabrication-of-an-occlusal-splint
#6
Jong-Eun Kim, Joo Hyun Kwon, Jee-Hwan Kim, June-Sung Shim
Various attempts have been made to transfer the transverse hinge axis and mandibular movement pattern to the mechanical articulator and to fabricate dental prostheses with the fewest errors. However, the occlusal adjustment of a dental prosthesis is always necessary to ensure a precise intraoral fit even when the facebow transfer technique is used in the cast mounting procedure. This is because the true hinge axis is not obtained when the facebow is applied to a patient who exhibits a variable mandible movement pattern rather than a single rotational axis...
November 17, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27866698/comparison-of-margin-discrepancy-of-complete-gold-crowns-fabricated-using-printed-milled-and-conventional-hand-waxed-patterns
#7
Sergio Munoz, Van Ramos, Douglas P Dickinson
STATEMENT OF PROBLEM: The recent application of printing for the fabrication of dental restorations has not been compared and evaluated for margin discrepancy (margin fit) with restorations fabricated using milling and conventional hand-waxing techniques. PURPOSE: The purpose of this in vitro study was to evaluate and compare margin discrepancy of complete gold crowns (CGCs) fabricated from printed, milled, and conventional hand-waxed patterns. MATERIAL AND METHODS: Thirty crown patterns were produced by each of 3 different methods: printed by ProJet DP 3000, milled by LAVA CNC 500, and hand waxed, then invested and cast into CGCs...
November 17, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27866697/development-and-capture-of-soft-tissue-contours-at-time-of-implant-placement
#8
Lambert J Stumpel, Chandur Wadhwani
A technique is described which will generate a customized healing abutment for a dental implant to allow the development of ideal soft tissue contours. With implant position and soft tissue contours defined at surgery, customized impression techniques can be used to capture those details and help generate the definitive implant-supported restoration. This workflow reduces the number of patient visits.
November 17, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27863860/orofacial-rehabilitation-with-zygomatic-implants-cad-cam-bar-and-magnets-for-patients-with-nasal-cancer-after-rhinectomy-and-partial-maxillectomy
#9
Elizabeth King, Carl Abbott, Lawrence Dovgalski, James Owens
Nasal carcinoma extending into the premaxilla requires radical surgical excision including rhinectomy and partial maxillectomy. Rehabilitation is complex and involves the use of removable prostheses. Three patients treated with zygomatic implants and custom-milled bars to retain an obturator and nasal prosthesis are presented.
November 15, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27863859/effect-of-fiber-posts-on-the-fracture-resistance-of-maxillary-central-incisors-with-class-iii-restorations-an-in%C3%A2-vitro-study
#10
Mohammed Abduljawad, Abdulaziz Samran, Jadalkareem Kadour, Wassim Karzoun, Matthias Kern
STATEMENT OF PROBLEM: Endodontically treated teeth with Class III restorations show reduced fracture resistance. The placement of glass fiber posts may affect fracture resistance and should be further evaluated. PURPOSE: The purpose of this in vitro study was to evaluate the effect of fiber posts on the fracture resistance of endodontically treated maxillary central incisors with Class III restorations. MATERIAL AND METHODS: Forty extracted human maxillary central incisors were selected and divided into 4 test groups (n=10 each) according to the restoration strategy: control group; endodontically treated teeth without endodontic posts (GHT); endodontically treated teeth with 2 Class III restorations simulating coronal destruction (GCT); endodontically treated teeth with 2 Class III restorations and a carbon fiber post (GCF); and endodontically treated teeth with 2 Class III restorations and a glass-fiber post (GGF)...
November 15, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27863858/response-to-nanda-a-krishnan-s-kaur-h-koli-d-manak-k-verma-m-gill-s-correction-of-microstomia-in-an-edentulous-patient-j-prosthet-dent-2016-115-137-40
#11
LETTER
Aditi Nanda, Sriram Krishnana, Harsimran Kaur, Dheeraj Koli, Karan Manak, Mahesh Verma, Shubhra Gill
No abstract text is available yet for this article.
November 15, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27863857/retention-and-wear-behaviors-of-two-implant-overdenture-stud-type-attachments-at-different-implant-angulations
#12
Jae-Won Choi, Ji-Hyeon Bae, Chang-Mo Jeong, Jung-Bo Huh
STATEMENT OF PROBLEM: Implant angulation should be considered when selecting an attachment. Some in vitro studies have investigated the relationship between implant angulation and changes in the retention force of the stud attachment, but few studies have evaluated the effect of cyclic loading and repeated cycles of insertion and removal on the stud attachment. PURPOSE: The purpose of this in vitro study was to evaluate the effects of implant angulation on the retentive characteristics of overdentures with 2 different stud attachments, an experimental system and O-rings in red and orange, after cyclic loading and repeated insertion and removal cycles...
November 15, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27863856/accuracy-of-intraoral-digital-impressions-using-an-artificial%C3%A2-landmark
#13
Jong-Eun Kim, Ami Amelya, Yooseok Shin, June-Sung Shim
STATEMENT OF PROBLEM: Intraoral scanners have been reported to have limited accuracy in edentulous areas. Large amounts of mobile tissue and the lack of obvious anatomic landmarks make it difficult to acquire a precise digital impression of an edentulous area with an intraoral scanner. PURPOSE: The purpose of this in vitro study was to determine the effect of an artificial landmark on a long edentulous space on the accuracy outcomes of intraoral digital impressions...
November 15, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27836147/effect-of-artificial-toothbrushing-and-water-storage-on-the-surface-roughness-and-micromechanical-properties-of-tooth-colored-cad-cam-materials
#14
Simon Flury, Elisabeth Diebold, Anne Peutzfeldt, Adrian Lussi
STATEMENT OF PROBLEM: Because of the different composition of resin-ceramic computer-aided design and computer-aided manufacturing (CAD-CAM) materials, their polishability and their micromechanical properties vary. Moreover, depending on the composition of the materials, their surface roughness and micromechanical properties are likely to change with time. PURPOSE: The purpose of this in vitro study was to investigate the effect of artificial toothbrushing and water storage on the surface roughness (Ra and Rz) and the micromechanical properties, surface hardness (Vickers [VHN]) and indentation modulus (EIT), of 5 different tooth-colored CAD-CAM materials when polished with 2 different polishing systems...
November 14, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27847158/effect-of-interim-cement-application-on-bond-strength-between-resin-cements-and-dentin-immediate-and-delayed-dentin-sealing
#15
Vinícius C Brigagão, Luis F D Barreto, Kellem A S Gonçalves, Marina Amaral, Rafael P Vitti, Ana C C Neves, Laís R Silva-Concílio
STATEMENT OF PROBLEM: Despite the advances in materials and techniques, adhesion to dentin is challenging because of the complex composition of dentin's mineral, organic, and fluid phases. PURPOSE: The purpose of this in vitro study was to evaluate the bond strength of 2 different resin cements (conventional and self-adhesive) with or without previous dentin sealing and the effect of interim cement. MATERIAL AND METHODS: Forty-five molars were embedded into acrylic resin blocks and a flat dentin surface was exposed...
November 12, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27847157/occlusal-consequence-of-using-average-condylar-guidance-settings-an-in%C3%A2-vitro-study
#16
Wonsup Lee, Young-Jun Lim, Myung-Joo Kim, Ho-Beom Kwon
STATEMENT OF PROBLEM: A simplified mounting technique that adopts an average condylar guidance has been advocated. Despite this, the experimental explanation of how average settings differ from individual condylar guidance remains unclear. PURPOSE: The purpose of this in vitro study was to examine potential occlusal error by using average condylar guidance settings during nonworking side movement of the articulator. MATERIAL AND METHODS: Three-dimensional positions of the nonworking side maxillary first molar at various condylar and incisal settings were traced using a laser displacement sensor attached to the motorized stages with biaxial freedom of movement...
November 12, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27847156/palatal-and-lingual-augmentation-prosthesis-for-patients-with-dysphagia-and-functional-problems-a-clinical-report
#17
Tomohisa Ohno, Ichiro Fujishima
This clinical report describes the treatment of a patient with insufficient tongue movement due to bilateral hypoglossal nerve palsy. A palatal augmentation prosthesis and a mandibular intraoral prosthesis (lingual augmentation prosthesis) were provided for this patient to address his functional dysphagia problems. These problems included insufficient oral to pharynx bolus transportation and displacement of the tongue to the right posterior. The 2 prostheses improved these 2 problems and also the head extension posture during swallowing...
November 12, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27836140/load-to-failure-of-different-zirconia-implant-abutments-with-titanium-components
#18
Faye Mascarenhas, Burak Yilmaz, Edwin McGlumphy, Nancy Clelland, Jeremy Seidt
STATEMENT OF PROBLEM: Abutments with a zirconia superstructure and a titanium insert have recently become popular. Although they have been tested under static load, their performance under simulated mastication is not well known. PURPOSE: The purpose of this in vitro study was to compare the cyclic load to failure of 3 types of zirconia abutments with different mechanisms of retention of the zirconia to the titanium interface. MATERIAL AND METHODS: Fifteen implants (n=5 per system) and abutments (3 groups: 5 friction fit [Frft]; 5 bonded; and 5 titanium ring friction fit [Ringfrft]) were used...
November 9, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27836149/quality-assessment-of-systematic-reviews-regarding-immediate-placement-of-dental-implants-into-infected-sites-an-overview
#19
REVIEW
Olavo B de Oliveira-Neto, Fabiano Timbó Barbosa, Célio Fernando de Sousa-Rodrigues, Fernando José C de Lima
STATEMENT OF PROBLEM: With the increased number of published systematic reviews and in view of their wide clinical applicability, these studies must be carefully assessed before professionals begin to use their recommendations in daily practice, and above all, the methodological quality of this study design must be considered. In implant dentistry, one topic that has been arousing particular interest is the immediate placement of dental implants into infected sites. PURPOSE: The purpose of this systematic review was to determine the methodological quality of systematic reviews that evaluated the immediate placement of dental implants into infected sites...
November 8, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27836148/volumetric-shrinkage-and-film-thickness-of-cementation-materials-for-veneers-an-in%C3%A2-vitro-3d-microcomputed-tomography-analysis
#20
Camila S Sampaio, João Malta Barbosa, Eduardo Cáceres, Lindiane C Rigo, Paulo G Coelho, Estevam A Bonfante, Ronaldo Hirata
STATEMENT OF PROBLEM: Few studies have investigated the volumetric polymerization shrinkage and film thickness of the different cementation techniques used to cement veneers. PURPOSE: The purpose of this in vitro study was to evaluate the volumetric polymerization shrinkage (VS) and film thickness (FT) of various cementation techniques through 3-dimensional (3D) microcomputed tomography (μCT). MATERIAL AND METHODS: Forty-eight artificial plastic maxillary central incisors with standard preparations for veneers were provided by a mannequin manufacturer (P-Oclusal) and used as testing models with the manufacturer's plastic veneers...
November 8, 2016: Journal of Prosthetic Dentistry
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