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Restorative Dentistry & Endodontics

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https://www.readbyqxmd.com/read/29765905/the-effect-of-thermocycling-on-the-degree-of-conversion-and-mechanical-properties-of-a-microhybrid-dental-resin-composite
#1
Mehrsima Ghavami-Lahiji, Melika Firouzmanesh, Hossein Bagheri, Tahereh S Jafarzadeh Kashi, Fateme Razazpour, Marjan Behroozibakhsh
Objective: The purpose of this study was to investigate the degree of conversion (DC) and mechanical properties of a microhybrid Filtek Z250 (3M ESPE) resin composite after aging. Method: The specimens were fabricated using circular molds to investigate Vickers microhardness (Vickers hardness number [VHN]) and DC, and were prepared according to ISO 4049 for flexural strength testing. The initial DC (%) of discs was recorded using attenuated total reflectance-Fourier transforming infrared spectroscopy...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29765904/cyclic-fatigue-resistance-torsional-resistance-and-metallurgical-characteristics-of-m3-rotary-and-m3-pro-gold-niti-files
#2
Eugenio Pedullà, Fabio Lo Savio, Giusy Rita Maria La Rosa, Gabriele Miccoli, Elena Bruno, Silvia Rapisarda, Seok Woo Chang, Ernesto Rapisarda, Guido La Rosa, Gianluca Gambarini, Luca Testarelli
Objectives: To evaluate the mechanical properties and metallurgical characteristics of the M3 Rotary and M3 Pro Gold files (United Dental). Materials and Methods: One hundred and sixty new M3 Rotary and M3 Pro Gold files (sizes 20/0.04 and 25/0.04) were used. Torque and angle of rotation at failure ( n = 20) were measured according to ISO 3630-1. Cyclic fatigue resistance was tested by measuring the number of cycles to failure in an artificial stainless steel canal (60° angle of curvature and a 5-mm radius)...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29765903/effect-of-ultrasonic-agitation-on-push-out-bond-strength-and-adaptation-of-root-end-filling-materials
#3
Murilo Priori Alcalde, Rodrigo Ricci Vivan, Marina Angélica Marciano, Jussaro Alves Duque, Samuel Lucas Fernandes, Mariana Bailo Rosseto, Marco Antonio Hungaro Duarte
Objectives: This study evaluated the effect of ultrasonic agitation of mineral trioxide aggregate (MTA), calcium silicate-based cement (CSC), and Sealer 26 (S26) on adaptation at the cement/dentin interface and push-out bond strength. Materials and Methods: Sixty maxillary canines were divided into 6 groups ( n = 10): MTA, S26, and CSC, with or without ultrasonic activation (US). After obturation, the apical portions of the teeth were sectioned, and retrograde cavities were prepared and filled with cement by hand condensation...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29765902/comparison-of-light-transmittance-in-dental-tissues-and-dental-composite-restorations-using-incremental-layering-build-up-with-varying-enamel-resin-layer-thickness
#4
Rodrigo Rocha Maia, Dayane Oliveira, Tracy D'Antonio, Fang Qian, Frederick Skiff
Objectives: To evaluate and compare light-transmittance in dental tissues and dental composite restorations using the incremental double-layer technique with varying layer thickness. Materials and Methods: B1-colored natural teeth slabs were compared to dental restoration build-ups with A2D and B1E-colored nanofilled, supra-nanofilled, microfilled, and microhybrid composites. The enamel layer varied from 0.3, 0.5, or 1.2 mm thick, and the dentin layer was varied to provide a standardized 3...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29765901/statistical-notes-for-clinical-researchers-simple-linear-regression-1-basic-concepts
#5
Hae-Young Kim
No abstract text is available yet for this article.
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29765900/effect-of-various-bleaching-treatments-on-shear-bond-strength-of-different-universal-adhesives-and-application-modes
#6
Fatma Dilsad Oz, Zeynep Bilge Kutuk
Objectives: The aim of this in vitro study was to evaluate the bond strength of 2 universal adhesives used in different application modes to bleached enamel. Materials and Methods: Extracted 160 sound human incisors were used for the study. Teeth were divided into 4 treatment groups: No treatment, 35% hydrogen peroxide, 16% carbamid peroxide, 7.5% carbamid peroxide. After bleaching treatments, groups were divided into subgroups according to the adhesive systems used and application modes ( n = 10): 1) Single Bond Universal, etch and rinse mode; 2) Single Bond Universal, self-etch mode; 3) Gluma Universal, etch and rinse mode; 4) Gluma Universal, self-etch mode...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29765899/the-effect-of-continuous-application-of-mdp-containing-primer-and-luting-resin-cement-on-bond-strength-to-tribochemical-silica-coated-y-tzp
#7
Myung-Jin Lim, Mi-Kyung Yu, Kwang-Won Lee
Objectives: This study investigated the effect of continuous application of 10-methacryloyloxydecyldihydrogen phosphate (MDP)-containing primer and luting resin cement on bond strength to tribochemical silica-coated yttria-stabilized tetragonal zirconia polycrystal (Y-TZP). Materials and Methods: Forty bovine teeth and Y-TZP specimens were prepared. The dentin specimens were embedded in molds, with one side of the dentin exposed for cementation with the zirconia specimen...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29765898/periodontal-healing-following-non-surgical-repair-of-an-old-perforation-with-pocket-formation-and-oral-communication
#8
Saeed Asgary, Prashant Verma, Ali Nosrat
Iatrogenic perforations negatively impact the outcome of endodontic treatments. Studies on prognostic factors showed that perforations in the coronal third of the root with periodontal pocket formation have an unfavorable prognosis. A 36-year-old female was referred for endodontic evaluation of tooth #13 with a history of an iatrogenic perforation, happened 3 years ago. There was a sinus tract associated with perforation, 10 mm probing on the mesial and mesio-palatal, bleeding on probing, radiolucent lesion adjacent to the perforation and complete resorption of the interdental bone between teeth #13 and #12...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29765897/anatomical-analysis-of-the-resected-roots-of-mandibular-first-molars-after-failed-non-surgical-retreatment
#9
Jiyoung Yoon, Byeong-Hoon Cho, Jihyun Bae, Yonghoon Choi
Objectives: Understanding the reason for an unsuccessful non-surgical endodontic treatment outcome, as well as the complex anatomy of the root canal system, is very important. This study examined the cross-sectional root canal structure of mandibular first molars confirmed to have failed non-surgical root canal treatment using digital images obtained during intentional replantation surgery, as well as the causative factors of the failed conventional endodontic treatments. Materials and Methods: This study evaluated 115 mandibular first molars...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29765896/comparison-of-the-shaping-ability-of-novel-thermally-treated-reciprocating-instruments
#10
Cangül Keskin, Murat Demiral, Evren Sarıyılmaz
Objectives: The present study aimed to evaluate the shaping ability of 2 thermally treated nickel-titanium reciprocating systems in simulated curved canals. Materials and Methods: Forty simulated canals were prepared to apical size 25 using Reciproc Blue R25 (VDW) and WaveOne Gold Primary (Dentsply Sirona) instruments. Standard pre- and post-preparation images were taken and superimposed. The removal of resin material was measured at 5 standard points: the canal orifice, halfway between the canal orifice and the beginning of the curve, the beginning of the curve, the apex of the curve, and the end-point of the simulated canal...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29765895/effect-of-smear-layer-deproteinization-on-bonding-of-self-etch-adhesives-to-dentin-a-systematic-review-and-meta-analysis
#11
Khaldoan H Alshaikh, Hamdi H H Hamama, Salah H Mahmoud
Objectives: The aim of this systematic review was to critically analyze previously published studies of the effects of dentin surface pretreatment with deproteinizing agents on the bonding of self-etch (SE) adhesives to dentin. Additionally, a meta-analysis was conducted to quantify the effects of the above-mentioned surface pretreatment methods on the bonding of SE adhesives to dentin. Materials and Methods: An electronic search was performed using the following databases: Scopus, PubMed and ScienceDirect...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29488510/corrigendum-corrections-to-the-funding-quantification-of-the-tug-back-by-measuring-the-pulling-force-and-micro-computed-tomographic-evaluation
#12
Su-Jin Jeon, Young-Mi Moon, Min-Seock Seo
[This corrects the article on p. 273 in vol. 42, PMID: 29142875.].
February 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29487843/management-of-dental-erosion-induced-by-gastro-esophageal-reflux-disorder-with-direct-composite-veneering-aided-by-a-flexible-splint-matrix
#13
Sherin Jose Chockattu, Byathnal Suryakant Deepak, Anubhav Sood, Nandini T Niranjan, Arun Jayasheel, Mallikarjun K Goud
Dental erosion is frequently overlooked in clinical practice. The management of erosion-induced damage to the dentition is often delayed, such that extensive occlusal rehabilitation is required. These cases can be diagnosed by a careful clinical examination and a thorough review of the patient's medical history and/or lifestyle habits. This case report presents the diagnosis, categorization, and management of a case of gastro-esophageal reflux disease-induced palatal erosion of the maxillary teeth. The early management of such cases is of utmost importance to delay or prevent the progression of damage both to the dentition and to occlusal stability...
February 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29487842/plugger-temperature-of-cordless-heat-carriers-according-to-the-time-elapsed
#14
Hoon-Sang Chang, Se-Hee Park, Kyung-Mo Cho, Jin-Woo Kim
Objective: The purpose of this study was to measure the temperature of the plugger tip of 3 cordless heat carriers set at 200°C. Materials and Methods: Pluggers of the same taper (0.06, 0.08, 0.10) and similar tip sizes (sizes of 50 and 55) from 3 cordless heat carriers, namely SuperEndo-α2 (B & L Biotech), Friendo (DXM), and Dia-Pen (Diadent), were used and an electric heat carrier, System B (SybronEndo), was used as the control. The plugger tips were covered with customized copper sleeves, heated for 10 seconds, and the temperature was recorded with a computerized measurement system attached to a K-type thermometer at room temperature ( n = 10)...
February 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29487841/mineral-content-analysis-of-root-canal-dentin-using-laser-induced-breakdown-spectroscopy
#15
Selen Küçükkaya Eren, Emel Uzunoğlu, Banu Sezer, Zeliha Yılmaz, İsmail Hakkı Boyacı
Objectives: This study aimed to introduce the use of laser-induced breakdown spectroscopy (LIBS) for evaluation of the mineral content of root canal dentin, and to assess whether a correlation exists between LIBS and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) methods by comparing the effects of irrigation solutions on the mineral content change of root canal dentin. Materials and Methods: Forty teeth with a single root canal were decoronated and longitudinally sectioned to expose the canals...
February 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29487840/the-effect-of-root-canal-preparation-on-the-surface-roughness-of-waveone-and-waveone-gold-files-atomic-force-microscopy-study
#16
Taha Özyürek, Koray Yılmaz, Gülşah Uslu, Gianluca Plotino
Objectives: To examine the surface topography of intact WaveOne (WO; Dentsply Sirona Endodontics) and WaveOne Gold (WOG; Dentsply Sirona Endodontics) nickel-titanium rotary files and to evaluate the presence of alterations to the surface topography after root canal preparations of severely curved root canals in molar teeth. Materials and Methods: Forty-eight severely curved canals of extracted molar teeth were divided into 2 groups ( n = 24/each group). In group 1, the canals were prepared using WO and in group 2, the canals were prepared using WOG files...
February 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29487839/a-simple-technique-for-impression-taking-of-teeth-and-functionally-generated-paths
#17
Takatsugu Yamamoto, Yohei Sato, Hidehiko Watanabe, Amit Punj, Minoru Abe, Yasuko Momoi, Chikahiro Ohkubo
The objective of this case report is to introduce a simple technique for simultaneously taking a closed-mouth impression and functionally generated path (FGP) for a full coverage crown restoration. A monolithic zirconia crown was the restoration of choice. An alginate impression of the abutment tooth was taken to fabricate a custom-made closed-mouth impression tray covering the abutment tooth and the adjacent teeth. The tray had an FGP table and an abutment tray in cameo and intaglio surfaces, respectively...
February 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29487838/comparison-of-bond-strengths-of-ceramic-brackets-bonded-to-zirconia-surfaces-using-different-zirconia-primers-and-a-universal-adhesive
#18
Ji-Yeon Lee, Jaechan Ahn, Sang In An, Jeong-Won Park
Objectives: The aim of this study is to compare the shear bond strengths of ceramic brackets bonded to zirconia surfaces using different zirconia primers and universal adhesive. Materials and Methods: Fifty zirconia blocks (15 × 15 × 10 mm, Zpex, Tosoh Corporation) were polished with 1,000 grit sand paper and air-abraded with 50 µm Al2 O3 for 10 seconds (40 psi). They were divided into 5 groups: control (CO), Metal/Zirconia primer (MZ, Ivoclar Vivadent), Z-PRIME Plus (ZP, Bisco), Zirconia Liner (ZL, Sun Medical), and Scotchbond Universal adhesive (SU, 3M ESPE)...
February 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29487837/appreciations-to-peer-reviewers-in-2017-contributions-to-the-journal-restorative-dentistry-endodontics
#19
EDITORIAL
Byeong-Hoon Cho, Su-Jung Shin
No abstract text is available yet for this article.
February 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29487836/micro-computed-tomographic-evaluation-of-canal-retreatments-performed-by-undergraduate-students-using-different-techniques
#20
Emmanuel João Nogueira Leal Silva, Felipe Gonçalves Belladonna, Marianna Fernandes Carapiá, Brenda Leite Muniz, Mariana Santoro Rocha, Edson Jorge Lima Moreira
Objectives: This study evaluated the amount of remaining root canal filling materials after retreatment procedures performed by undergraduate students using manual, rotary, and reciprocating techniques through micro-computed tomographic analysis. The incidence of instrument fracture and the instrumentation time were also evaluated. Materials and Methods: Thirty maxillary single rooted teeth were prepared with Reciproc R25 files and filled with gutta-percha and AH Plus sealer by the continuous wave of condensation technique...
February 2018: Restorative Dentistry & Endodontics
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