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https://www.readbyqxmd.com/read/28816187/comparison-of-film-thickness-of-two-commercial-brands-of-glass-lonomer-cement-and-one-dual-cured-composite-an-in-vitro-study
#1
Rajat R Khajuria, Rishav Singh, Pranamee Barua, Nausheen Hajira, Naveen Gupta, Rohit R Thakkar
AIM: The present study is undertaken to examine the film thickness of three most commonly used luting cements and to determine their usage as a luting agent. MATERIALS AND METHODS: This study was carried out strictly according to the guidelines of American Dental Association (ADS) specification no. 8. Two glass slabs of 5 cm in length and 2 cm in width were used. One glass slab was kept over the other glass slab and the space between the two glass slabs was measured using metallurgical microscope at the power of 10*...
August 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28806426/comparative-evaluation-of-the-effect-of-laser-etching-on-the-shear-bond-strength-of-crowns-cemented-with-two-different-luting-agents-an-in-vitro-study
#2
Ankur Dahiya, Paresh Gandhi, Nadim Z Baba
PURPOSE: The aim of this study was to compare the shear bond strength of crowns cemented on natural teeth after surface treatment of the enamel with an erbium-doped yttrium aluminum garnet (Er:YAG) laser. MATERIALS AND METHODS: Crown preparation was done for 40 full-metal crowns, and wax patterns with loops were cast in a cobalt-chromium alloy. The Er:YAG laser was used for surface treatment of some teeth, and teeth without surface treatment acted as the control...
August 14, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28712740/aspects-of-adhesion-tests-on-resin-glass-ceramic-bonding
#3
Andrew Chi Ho Wong, Tian Tian, James Kit Hon Tsoi, Michael Francis Burrow, Jukka Pekka Matinlinna
OBJECTIVES: This study aimed to compare and contrast two resin-ceramic bond strength tests, the tensile bond strength and the four-point bending tests. The effects of hydrofluoric acid (HF) etching time and storage condition on bond strength were also studied. METHODS: Ceramic beams (N=480) with the dimensions of 2.00×2.00×12.45mm(3) were sectioned from lithium disilicate ceramic ingots (IPS e.max CAD), then polished and fired for final crystallization. The joint surfaces were etched with HF gel (IPS Ceramic etching gel) for 20s, 40s, or 60s of each group (n=160)...
July 13, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28682281/microleakage-of-class-ii-composite-resin-restorations-with-self-adhesive-composite-resin-liners
#4
Maryam Doozandeh, Fereshteh Shafiei, Fatemeh Mohammadi
This study investigated the microleakage of Class II composite restorations with composite resin liners. Standardized box cavities were prepared on the mesial and distal surfaces of 84 extracted intact human molars. Proximal margins were located in enamel (occlusal) and 1.0 mm apical to the cementoenamel junction (gingival). The teeth were randomly divided into 6 groups (n = 28 cavities) and restored with Filtek Z350 nanohybrid composite resin (FZ). The test groups were lined with a conventional flowable composite resin, Premise Flowable (PF), or 1 of 2 self-adhesive composites (SACs): Vertise Flow (VF) or Clearfil SA luting cement (CSA) with or without their respective self-etching adhesives: Optibond All-in-One (OB) or Clearfil SE Bond (CSE)...
July 2017: General Dentistry
https://www.readbyqxmd.com/read/28597006/effect-of-final-irrigation-protocol-and-etching-mode-on-bond-strength-of-a-multimode-adhesive-in-the-root-canal
#5
Kerstin Bitter, Luise Polster, Haitham Askar, Manja von Stein-Lausnitz, Guido Sterzenbach
PURPOSE: To analyze the effects of ethanol for final post space irrigation and etching mode on the bond strength of fiber posts luted with a mild multimode adhesive (pH 2.3) as compared with a reference group using a self-adhesive resin cement (SAR). MATERIALS AND METHODS: Human anterior teeth were endodontically treated. After post space preparation, the root canals were irrigated using 1% sodium hypochlorite (NaOCl) applied with passive ultrasonic irrigation, followed by either distilled water (control) or distilled water and ethanol 99% as final post space irrigation...
June 8, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28586234/the-direct-indirect-technique-for-composite-restorations-revisited
#6
André V Ritter, Newton Fahl, Marcos Vargas, Rodrigo R Maia
In the direct-indirect composite technique, composite is applied to a nonretentive tooth preparation (eg, a noncarious cervical lesion or a veneer/inlay/onlay preparation) without any bonding agent, sculpted to a primary anatomic form, and light-cured. The partially polymerized restoration is then removed from the preparation and finished and tempered extraorally chairside. The finished inlay is bonded to the preparation using a resin-based luting agent. Advantages of this technique include enhanced physical and mechanical properties afforded by the extraoral chairside tempering process because of increased monomer conversion, and greater operator control over the final marginal adaptation, surface finishing and polishing, and anatomy of the restoration, given that these elements are defined outside of the patient's mouth...
June 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28580465/effect-of-mdp-containing-silane-and-adhesive-used-alone-or-in-combination-on-the-long-term-bond-strength-and-chemical-interaction-with-lithium-disilicate-ceramics
#7
Andres Millan Cardenas, Fabiana Siqueira, Viviane Hass, Pâmela Malaquias, Mario Felipe Gutierrez, Alessandra Reis, Jorge Perdigão, Alessandro D Loguercio
PURPOSE: To evaluate the effect of a silane and an adhesive containing MDP, used alone or combined in the same solution, on the microshear bond strength (μSBS) to lithium disilicate ceramics immediately and after 1-year water storage, and compare the bond strength results with the Raman spectra of the treated lithium disilicate surfaces. MATERIALS AND METHODS: A total of 30 CAD/CAM blocks of lithium disilicate (LD; IPS e.max CAD) were cut into four square sections (6 x 6 x 6 mm; n = 60 per group) and processed as recommended by the manufacturer...
June 2, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28518187/in-vitro-shock-absorption-tests-on-implant-supported-crowns-influence-of-crown-materials-and-luting-agents
#8
Martin Rosentritt, Sibylle Schneider-Feyrer, Michael Behr, Verena Preis
PURPOSE: To investigate the force absorption capacity of implant-supported crowns made of different restorative materials and connected to abutments with different luting agents. MATERIALS AND METHODS: Molar crowns were milled of different computer-aided design/computer-aided manufacture materials (n = 8 crowns per material): polymethyl methacrylate, polyether ether ketone, composite, lithium disilicate, titanium, and zirconia. Crowns were mounted on titanium implant replicas using different luting agents: uncemented, temporarily cemented (zinc oxide-eugenol cement), conventionally cemented (zinc oxide phosphate cement), and adhesively bonded...
May 18, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28509508/a-survey-on-prevalence-causes-and-prevention-of-postcementation-hypersensitivity
#9
Zülfikar Demirtag, Recep Uzgur, Mustafa Turkal, Zeynep Uzgur, Hakan Çolak, Mutlu Özcan
This study evaluated the prevalence and causes of post-cementation sensitivity and possible prevention measures according to the experience of dentists through an internet survey. A questionnaire was prepared with 25 items based on a survey introduced by Rosenstiel and Rashid. An online site was created for the participation to the survey. A total of 322 participants responded the questionnaire. The results of the questionnaire indicated the amount of tooth preparation (42.1%) is the most frequent reason for hypersensitivity followed by water-cooling with pressure (11...
September 2016: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28467258/effect-of-endocrown-pulp-chamber-extension-depth-on-molar-fracture-resistance
#10
A Hayes, N Duvall, M Wajdowicz, H Roberts
PURPOSE: The purpose of this study was to evaluate the effect of endocrown pulp chamber extension on mandibular molar fracture resistance. METHODS AND MATERIALS: A total of 36 recently extracted mandibular third molars of approximate equal size were sectioned at the facial lingual height of contour followed by endodontic access into the pulp chamber. The specimens were then randomly divided into three groups (n=12) and pulpal and root canal contents removed. Pulp chamber floors were established at 2, 3, and 4 mm from the occlusal table using a three-step etch-and-rinse adhesive and a flowable resin composite...
May 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28453003/cad-cam-fabricated-nonmetal-clasp-denture-in-vitro-pilot-study
#11
Yutaka Takahashi, Ippei Hamanaka, Kota Isshi
PURPOSE: The purpose of this study was to fabricate a prototype nonmetal clasp denture using computer-aided design/computer-assisted manufacture (CAD/CAM) technology. MATERIALS AND METHODS: A partially edentulous mandibular working cast was scanned using an optical scanner. A sectional denture separated by two parts was designed on the scanned cast. These parts were milled and combined, and adhered using an adhesive luting agent. RESULTS: The completed denture was delivered on the working cast and provided an excellent level of fitness...
May 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28443835/effect-of-boric-acid-versus-conventional-irrigation-solutions-on-the-bond-strength-between-fiber-post-and-root-dentin
#12
Ahmet Kursad Culhaoglu, Erdal Özcan, Mehmet Ali Kilicarslan, Emre Seker
PURPOSE: To compare the effect of boric acid solutions of different percentages to conventional irrigation solutions on the adhesive bond strength between fiber posts and radicular dentin surface with different cement types. MATERIALS AND METHODS: One hundred fifteen extracted human incisors were endodontically instrumented to a length of 14-15 mm, and 12-mm post spaces were prepared with specific drills. Cylindrical fiber posts (Panavia Post) were luted with two different composite cements (Panavia F 2...
April 25, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28435367/-ormocer-an-innovative-technology-a-replacement-for-conventional-cements-and-veneer-a-comparative-in-vitro-analysis
#13
Vini Rajeev, Rajeev Arunachalam, Sanjna Nayar, P R Arunima, Sivadas Ganapathy, Vaishnavi Vedam
OBJECTIVE: This in vitro study was designed to assess shear bond strength (SBS) of ormocer flowable (OF) resin as a luting agent, ormocer as an indirect veneer material with portrayal of modes of failures using scanning electron microscope (SEM). MATERIALS AND METHODS: Sixty maxillary central incisors were divided into Group I, II, and III with 20 samples each based on luting cement used. They were OF, self-adhesive (SA) cement, and total etch (TE) cement. These groups were subdivided into "a" and "b" of ten each based on the type of veneering materials used...
January 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28385444/spectrophotometric-analysis-of-clinical-factors-related-to-the-color-of-ceramic-restorations-a-pilot-study
#14
Ana Paula Perroni, César D Bergoli, Mateus Bertolini F Dos Santos, Rafael R Moraes, Noéli Boscato
STATEMENT OF PROBLEM: Shade matching natural teeth with ceramic restorations is still an esthetic, clinical challenge. PURPOSE: The purpose of this prospective clinical study was to evaluate the influence of color-related factors on the color variation of ceramic restorations based on spectrophotometric analysis. MATERIAL AND METHODS: Color records were obtained from 11 participants who received 38 lithium disilicate restorations. CIELab color coordinates were measured with a spectrophotometer on the ceramic restoration, tooth (baseline), prepared tooth, and luted ceramics...
April 3, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28385431/color-stability-of-ceramic-laminate-veneers-cemented-with-light-polymerizing-and-dual-polymerizing-luting-agent-a-split-mouth-randomized-clinical-trial
#15
Ana Maria Estivalete Marchionatti, Vinícius Felipe Wandscher, Michele Mirian May, Marco Antonio Bottino, Liliana Gressler May
STATEMENT OF PROBLEM: The color stability of luting agents influences the esthetics of ceramic laminate veneers. Clinical studies that have evaluated the color changes of veneers cemented to enamel with light- and dual-polymerizing resin cement are lacking. PURPOSE: The purpose of this split-mouth randomized clinical trial was to evaluate the color change and marginal discoloration of dual- and light-polymerizing cement used for cementation of ceramic laminate veneers...
April 3, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28383306/dislodgement-resistance-of-zirconia-copings-cemented-onto-zirconia-and-titanium-abutments
#16
Umut Güler, Yasemin Budak, José Renato Cavalcanti Queiroz, Mutlu Özcan
PURPOSE: To determine the effect of the cement type and abutment material on the tensile strength required to dislodge zirconia copings. MATERIALS AND METHODS: Two experimental groups of abutments were prepared: (1) titanium abutments (n = 30) and (2) zirconia abutments (n = 30). Sixty zirconia copings (custom designed) were fabricated using 3-dimensional computer-assisted design to have a 6-mm projection above the abutment to accommodate a hole, through which a wire was inserted to attach the zirconia coping to a universal testing machine...
August 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28337003/shade-of-resin-based-luting-agents-and-final-color-of-porcelain-veneers
#17
(no author information available yet)
All that is required is three shades of luting cement.
March 24, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28298987/effect-of-different-concentrations-of-specific-inhibitor-of-matrix-metalloproteinases-on-the-shear-bond-strength-of-self-adhesive-resin-cements-to-dentin
#18
Mohammad-Esmaeel Ebrahimi-Chaharom, Mehdi Abed-Kahnamoui, Mahmoud Bahari, Hamed Hamishehkar, Mahya Gharouni
BACKGROUND: Considering the probability of chemical and enzymatic reactions between matrix metalloproteinases (MMPs) in the dentin structure and their specific inhibitors, the aim of the present study was to evaluate the effect of different concentrations of specific inhibitor of MMPs (galardin) on the shear bond strength of self-adhesive resin cements to dentin. MATERIAL AND METHODS: Forty-eight sound human premolars were mounted in self-cured acrylic resin after removal of the enamel on the buccal and lingual surfaces...
March 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28222871/evaluation-of-hypersensitivity-after-the-placement-of-metal-ceramic-crowns-cemented-with-two-luting-agents-long-term-results-of-a-prospective-clinical-study
#19
Carla Kozmacs, Katharina Schaper, Hans-Christoph Lauer, Andree Piwowarczyk
STATEMENT OF PROBLEM: Different luting materials are available for the cementation of fixed dental prostheses. Postcementation hypersensitivity is an occasional complication in the definitive delivery. How the choice of luting agent affects long-term postcementation sensitivity is unknown. PURPOSE: The purpose of this prospective, randomized, controlled, split-mouth clinical trial was to compare the hypersensitivity of 2 cementation methods for metal ceramic crowns...
February 17, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28209008/effect-of-resin-bonded-luting-agents-influencing-marginal-discrepancy-in-all-ceramic-complete-veneer-crowns
#20
Dhanraj Ganapathy, Anusha Sathyamoorthy, Hemalatha Ranganathan, Karthikeyan Murthykumar
INTRODUCTION: Marginal discrepancy severely affects the long term success of All ceramic complete veneer crowns. The precise role of resin luting agents influencing this phenomenon needs to be explored further. AIM: To estimate and compare the marginal discrepancy in CAD/CAM processed All ceramic complete veneer crowns prior and following luting with resin bonded luting agents. MATERIALS AND METHODS: Extracted human maxillary first premolars were randomly allocated into four groups of 27 samples each Viz...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
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