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https://www.readbyqxmd.com/read/29042724/evaluation-of-bond-strength-between-grooved-titanium-alloy-implant-abutments-and-provisional-veneering-materials-after-surface-treatment-of-the-abutments-an-in-vitro-study
#1
Gowtham Venkat, Murugesan Krishnan, Suganya Srinivasan, Muthukumar Balasubramanian
INTRODUCTION: Titanium has become the material of choice with greater applications in dental implants. The success of the dental implant does not only depend on the integration of the implant to the bone but also on the function and longevity of the superstructure. The clinical condition that demands long-term interim prosthesis is challenging owing to the decreased bond between the abutment and the veneering material. Hence, various surface treatments are done on the abutments to increase the bond strength...
July 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28989131/comparison-of-hypersensitivity-in-metal-ceramic-crowns-cemented-with-zinc-phosphate-and-self-adhesive-resin-a-prospective-study
#2
Thatapudi Shankar, Mirna Garhnayak, Lokanath Garhnayak, Angurbala Dhal, Aswini K Kar
BACKGROUND: Luting agents used to fix artificial prostheses, such as fixed partial denture (FPD) to tooth are basically viscous in nature and show chemical reaction for fixation. Postcementation hypersensitivity is a frequent complaint of patients. The present study was conducted to compare postcementation hypersensitivity with zinc phosphate and self-adhesive resin in complete coverage crown. MATERIALS AND METHODS: This study included 30 patients in which 60 porcelein fused to metal crowns was placed...
October 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28989124/comparison-of-shear-bond-strengths-of-conventional-resin-cement-and-self-adhesive-resin-cement-bonded-to-lithium-disilicate-an-in-vitro-study
#3
Anip K Roy, Dennis Mohan, M Sunith, Rashmi B Mandokar, S Suprasidh, Soumya Rajan
AIM: The aim of this study is to compare the shear bond strengths of conventional resin cement and self-adhesive resin cement bonded to lithium disilicate. MATERIALS AND METHODS: A total of 40 extracted human molar teeth were mounted in self-cure acrylic resin. Teeth were prepared to obtain flat occlusal surface. About 40 lithium disilicate specimens of dimension-10 mm in diameter and thickness of 2 mm-were fabricated using lost wax technique. The samples were divided into four groups: Groups I, II, III, and IV (n = 10)...
October 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28985446/preparation-ferrule-design-effect-on-endocrown-failure-resistance
#4
Michael Einhorn, Nicholas DuVall, Michael Wajdowicz, John Brewster, Howard Roberts
PURPOSE: To evaluate the effect of preparation ferrule inclusion with fracture resistance of mandibular molar endocrowns. MATERIALS AND METHODS: Recently extracted mandibular third molars were randomly divided into 3 groups (n = 12) with the coronal tooth structure removed perpendicular to the root long axis approximately 2 mm above the cemento-enamel junction with a slow-speed diamond saw. The pulp chamber was exposed using a diamond bur in a high-speed handpiece with pulpal remnants removed and canals instrumented using endodontic hand instruments...
October 6, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28935192/effect-of-priming-agents-on-shear-bond-strengths-of-resin-based-luting-agents-to-a-translucent-zirconia-material
#5
Shogo Yagawa, Futoshi Komine, Ryosuke Fushiki, Kei Kubochi, Fumiaki Kimura, Hideo Matsumura
PURPOSE: The purpose of the present study was to evaluate the effect of priming agents and artificial aging with thermocycling on shear bond strengths of two resin-based luting agents to a translucent zirconia material. METHODS: A total of 308 pairs of translucent zirconia disk specimens were divided into seven treatment groups: Alloy Primer (ALP), Clearfil Ceramic Primer Plus (CCP), Meta Fast Bonding Liner (MFB), MR. bond (MRB), Super-Bond PZ Primer Liquid B (PZB), V-Primer (VPR), and an unprimed group (UP)...
September 18, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28932151/influence-of-irrigating-agents-on-fiber-postpush-out-bond-strength-to-radicular-dentin-sections-with-the-different-adhesive-system
#6
Satheesh B Haralur, Asim Nasser A Alasabi, Sultan A Abohathrah Al Qahtani, Saeed Musleh S Alqahtani
OBJECTIVE: The objective of this study is to evaluate the effect of irrigating agents on push-out bond strength of resin postcemented with various adhesive systems at different radicular dentin sections. MATERIALS AND METHODS: Sixty single-rooted premolar teeth were root canal treated, subsequently decorated at cementoenamel junction. The endodontic postspace was irrigated with 5.25% sodium hypochlorite (NaOCl) and 17% ethylenediaminetetraacetic acid (EDTA) for Group A (n = 30) and Group B (n = 30), respectively...
July 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28927922/retrospective-clinical-evaluation-of-ceramic-onlays-placed-by-dental-students
#7
Jennifer J Archibald, Gildo Coelho Santos, Maria Jacinta Moraes Coelho Santos
STATEMENT OF PROBLEM: Indirect restorations with partial or complete occlusal surface coverage have been recommended to restore teeth with weakened walls in order to prevent cusp fracture. The success of these restorations when performed by dental students is unknown. PURPOSE: The purpose of this retrospective study was to evaluate the clinical performance of adhesively bonded ceramic onlay restorations placed by third- and fourth-year dental students. MATERIAL AND METHODS: Sixty-five ceramic onlays were placed in patients between 2009 and 2015...
September 16, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28916464/adhesion-procedure-for-cad-cam-resin-crown-bonding-reduction-of-bond-strengths-due-to-artificial-saliva-contamination
#8
Asuka Kawaguchi-Uemura, Atsushi Mine, Mariko Matsumoto, Yuko Tajiri, Mami Higashi, Tomoshige Kabetani, Ryosuke Hagino, Dai Imai, Takuya Minamino, Jiro Miura, Hirofumi Yatani
PURPOSE: The present study aimed to elucidate how saliva contamination affects microtensile bond strength of resin cement to CAD/CAM resin blocks and identify a decontamination method that can restore original bond strength. METHODS: The KATANA AVENCIA block (Kuraray Noritake Dental) was sandblasted on the adherend surface (P-Co group). Then, the block was contaminated with artificial saliva (Saliveht Aerosol, Teijin). Air dry (N-Co), sandblasting (Sb) and phosphate acid cleaning (AT) groups were prepared...
September 12, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28890610/evaluation-of-novel-glass-fiber-reinforced-composite-technique-for-primary-anterior-teeth-with-deep-carious-lesions-a-12-month-clinical-study
#9
Ajinkya Sawant, Yusuf Chunawalla, Abdul Morawala, Nupur S Kanchan, Kapil Jain, Rohan Talathi
BACKGROUND: Early childhood caries discloses a distinct clinical pattern, and the teeth most often involved are the maxillary central incisors, lateral incisors, and the maxillary and man-dibular first molars. The maxillary incisors are most severely affected, with deep carious lesions usually involving the pulp. Teeth that have been endodontically treated often have little coronal tooth tissue remaining and as such require a post to retain the core and restoration .This study evaluated and compared the efficacy of EverStick glass fiber-reinforced composite post with ParaPost Taper Lux in primary maxillary anterior teeth...
April 2017: International Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28869365/influence-of-different-ceramic-systems-on-marginal-misfit
#10
S P Vargas, A C C Neves, R Vitti, M Amaral, M N Henrique, L R Silva-Concílio
OBJECTIVE: the aim of this study was to evaluate the marginal misfit at the interface between a ceramic coping and its abutment. METHODS: Twenty-four specimens were made with solid abutments. The specimens were divided into 3 groups according to the ceramic system (n = 8): Lava (zirconia), IPS e.max Press (lithium disilicate), and IPS Empress Esthetic (leucite). All copings were cemented with resin luting agent (RelyX U200) and the marginal misfit were evaluated at 3 different times: initial, after cementation, and after mechanical cycling using a linear measuring microscope (Measuring Microscope STM-Olympus) at a magnification of 40x...
September 2017: European Journal of Prosthodontics and Restorative Dentistry
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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