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https://www.readbyqxmd.com/read/28647157/veneered-zirconia-inlay-retained-fixed-dental-prostheses-10-year-results-from-a-prospective-clinical-study
#1
Friederike Rathmann, Wolfgang Bömicke, Peter Rammelsberg, Brigitte Ohlmann
OBJECTIVE: The purpose of this study was to evaluate the 10-year clinical performance of zirconia-based inlay-retained fixed dental prostheses (IRFDP). METHODS: For replacement of a molar in 27 patients, 30 IRFDP were luted by use of different cements, Panavia F (Kuraray Europe GmbH) or Multilink Automix (Ivoclar Vivadent GmbH), with use of inlay/inlay, inlay/full-crown, or inlay/partial-crown retainers for anchorage. Frameworks were milled from yttria-stabilized zirconia (IPS e...
June 21, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28643542/long-term-stability-of-splinted-anterior-mandibular-teeth-during-supportive-periodontal-therapy
#2
Sarah K Sonnenschein, Carlota Betzler, Maurice A Rütters, Johannes Krisam, Daniel Saure, Ti-Sun Kim
OBJECTIVE: The aim of the study was to retrospectively assess the survival rate and stability of periodontally compromised and mobile anterior mandibular teeth after splinting in patients under supportive periodontal therapy (SPT). MATERIALS AND METHODS: Thirty-nine patients with splinted anterior mandibular teeth and SPT (≥1 visit/year) for 3-15 years were re-examined. Periodontal status, patient and tooth-related factors were assessed retrospectively before (baseline) and 3 years after splinting (n = 39 patients, 162 splinted teeth)...
June 23, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28640749/enamel-shear-bond-strength-of-different-primers-combined-with-an-orthodontic-adhesive-paste
#3
Julia H Seeliger, Ute U Botzenhart, Tomasz Gedrange, Karol Kozak, Lukas Stepien, Monika Machoy
AIM: The aim of this study was a comparison of shear bond strength (SBS) on tooth enamel of different primers combined with the adhesive paste Transbond XT. MATERIALS AND METHODS: Forty bovine teeth were used in order to create 40 test blocks. The blocks were divided into four groups of 10 blocks each: group A - sample primer (SP); group B - Opal Seal (OS); group C - Transbond Plus SEP (TSEP); group D - Transbond XT Primer (TXT). After surface preparation and application of the primer, respectively, two stainless steel brackets were fixed on each tooth by using Transbond XT...
June 22, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28629194/adhesive-defect-monitoring-of-glass-fiber-epoxy-plate-using-an-impedance-based-non-destructive-testing-method-for-multiple-structures
#4
Wongi S Na, Jongdae Baek
The emergence of composite materials has revolutionized the approach to building engineering structures. With the number of applications for composites increasing every day, maintaining structural integrity is of utmost importance. For composites, adhesive bonding is usually the preferred choice over the mechanical fastening method, and monitoring for delamination is an essential factor in the field of composite materials. In this study, a non-destructive method known as the electromechanical impedance method is used with an approach of monitoring multiple areas by specifying certain frequency ranges to correspond to a certain test specimen...
June 19, 2017: Sensors
https://www.readbyqxmd.com/read/28610425/programmable-nanopatterns-by-controlled-debonding-of-soft-elastic-films
#5
Nandini Bhandaru, Ashutosh Sharma, Rabibrata Mukherjee
We report a facile patterning technique capable of creating nanostructures with different feature heights (hS), periodicities (λS), aspect ratios (AR), and duty ratios (DR), using a single grating stamp with fixed feature height hP and periodicity λP. The proposed method relies on controlling the extent of debonding and morphology of the contact instability features, when a rigid patterned stamp is gradually debonded from a soft elastic film to which it was in initial conformal contact. Depending on whether the instability wavelength (λF scales with the film thickness hF as λF ≈ 3hF) and the periodicity of the stamp feature (λP) are commensurate or not, it is possible to obtain features along each stamp protrusion when λF ≈ λP or patterns that span several stripes of the stamp when λF > λP...
June 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28605611/short-and-long-term-bond-strength-between-resin-cement-and-glass-ceramic-using-a-silane-containing-universal-adhesive
#6
F Murillo-Gómez, F A Rueggeberg, M F De Goes
This study aimed to evaluate the effect of various silane-containing solutions on bonding between resin cement and glass ceramic after 24 hours and after six months of water storage. Glass-ceramic plaques (IPS e.max CAD) were sandblasted with aluminum oxide, etched with 10% hydrofluoric acid (HF), and divided into five "silane treatment" groups: RelyX Ceramic Primer (RCP), RelyX Ceramic Primer and Single Bond Plus (RCP+SB), Scotchbond Universal (SBU), Clearfil Ceramic Primer (CP), and no solution (HF-only control)...
June 12, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28566855/assessment-of-bracket-surface-morphology-and-dimensional-change
#7
Pillai Devu Radhakrishnan, N K Sapna Varma, V V Ajith
OBJECTIVE: The objective of this study was to compare the surface morphology and dimensional stability of the bracket slot at the onset of treatment and after 12 months of intraoral exposure. The study also compared the amount of calcium at the bracket base which indicates enamel loss among the three orthodontic brackets following debonding after 12 months of intraoral exposure. MATERIALS AND METHODS: The sample consisted of 60 (0.022" MBT) canine brackets. They were divided into three groups: self-ligating, ceramic bracket with metal slot, and stainless steel (SS) brackets...
January 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28533012/a-technique-for-the-removal-of-a-wedged-implant-abutment-fragment-or-debonded-titanium-base
#8
Geoffrey R Johnston, Faris Z Jamjoom, Damian J Lee
A technique for the retrieval of wedged implant fragments is described. The technique is suitable for fractured zirconia and metal abutments and titanium bases left behind after fracture or debonding of the custom zirconia abutment from the titanium base of an implant-supported prosthesis. This straightforward, noninvasive, technique facilitates the removal of the fragments or titanium bases without risking damage to the implant, surrounding bone, or soft tissues.
May 20, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28524696/linking-particle-dynamics-to-local-connectivity-in-colloidal-gels
#9
Jan Maarten van Doorn, Jochem Bronkhorst, Ruben Higler, Ties van de Laar, Joris Sprakel
Colloidal gels are a prototypical example of a heterogeneous network solid whose complex properties are governed by thermally activated dynamics. In this Letter we experimentally establish the connection between the intermittent dynamics of individual particles and their local connectivity. We interpret our experiments with a model that describes single-particle dynamics based on highly cooperative thermal debonding. The model, in quantitative agreement with experiments, provides a microscopic picture for the structural origin of dynamical heterogeneity in colloidal gels and sheds new light on the link between structure and the complex mechanics of these heterogeneous solids...
May 5, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28518183/preclinical-evaluation-of-a-crown-splinted-custom-root-shaped-implant
#10
Elias D Kontogiorgos, Poorva Gharpure, Eberechukwu O Iheanacho, Christopher J Gonzales, Lynne A Opperman
OBJECTIVE: To test whether a Maryland bridge-type splint provides adequate stability for a custom root-shaped implant to osseointegrate in a manner substantially equivalent to that of a threaded implant. METHODS: Six beagle dogs were subjected to intraoral impressions and cone beam scans that were used to fabricate custom root-shaped implants (RTIs) and crowns. Premolars in the mandible (P4) and in the maxilla (P3) were extracted, and 24 RTIs were immediately placed in extraction sockets...
May 18, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28512535/evaluation-of-surface-roughness-of-enamel-after-various-bonding-and-clean-up-procedures-on-enamel-bonded-with-three-different-bonding-agents-an-in-vitro-study
#11
Amit Goel, Atul Singh, Tarun Gupta, Ramandeep-Singh Gambhir
BACKGROUND: The purpose of this study was to analyze and compare the enamel surface roughness before bonding and after debonding, to find correlation between the adhesive remnant index and its effect on enamel surface roughness and to evaluate which clean-up method is most efficient to provide a smoother enamel surface. MATERIAL AND METHODS: 135 premolars were divided into 3 groups containing 45 premolars in each group. Group I was bonded by using moisture insensitive primer, Group II by using conventional orthodontic adhesive and Group III by using self-etching primer...
May 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28486974/cell-separation-in-kiwifruit-without-development-of-a-specialised-detachment-zone
#12
Roneel Prakash, Ian C Hallett, Sally F Wong, Sarah L Johnston, Erin M O'Donoghue, Peter A McAtee, Alan G Seal, Ross G Atkinson, Roswitha Schröder
BACKGROUND: Unlike in abscission or dehiscence, fruit of kiwifruit Actinidia eriantha develop the ability for peel detachment when they are ripe and soft in the absence of a morphologically identifiable abscission zone. Two closely-related genotypes with contrasting detachment behaviour have been identified. The 'good-peeling' genotype has detachment with clean debonding of cells, and a peel tissue that does not tear. The 'poor-peeling' genotype has poor detachability, with cells that rupture upon debonding, and peel tissue that fragments easily...
May 10, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28474077/-the-impact-of-personality-traits-on-adolescents-adaptation-and-compliance-to-clear-retainers
#13
Fan Xu, Guo-Hua Tang
PURPOSE: The aim of this study was to evaluate the adolescents' adaptation and compliance to clear retainers, and to investigate their associations with personality traits. METHODS: Fifty adolescents at the end of fixed orthodontic treatment were consecutively recruited. After debonding the fixed orthodontic appliances, clear retainers were used. Participants were asked to fill questionnaires 2 months after wearing the clear retainers. A questionnaire was designed to evaluate their adaptation and compliance for clear retianers...
February 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28469821/evaluation-of-the-effect-of-three-innovative-recyling-methods-on-the-shear-bond-strength-of-stainless-steel-brackets-an-in-vitro-study
#14
Neeraj Gupta, Dilip Kumar, Aparna Palla
BACKGROUND: Orthodontists are commonly faced with the decision of what to do with debonded or inaccurately positioned brackets. An economical option to this dilemma is to recycle the brackets. Many recycling methods have been proposed, but the optimal bond strength of these recycled brackets needs further evaluation. Objectives: To evaluate and compare the effect of three recycling methods: (i) Sandblasting (ii) Sandblasting / direct flaming (iii) Sandblasting /direct flaming /acid bath solution on shear bond strength (SBS) of stainless steel brackets...
April 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28463292/investigation-on-vibration-excitation-of-debonded-sandwich-structures-using-time-average-digital-holography
#15
Binu P Thomas, S Annamala Pillai, C S Narayanamurthy
Sandwich structures, in the modern aerospace industry, are more sought after due to their high strength to stiffness ratio resulting in significant weight gains. Optical techniques like time-average holography and shearography are preferred in industries for inspection of huge sandwich and composite panels because of whole-field (full coverage) inspection in a lesser time leading to large savings in cost. These techniques conventionally use sinusoidal frequency sweep to capture the local resonance of defective regions...
May 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/28461047/influence-of-cement-type-and-ceramic-primer-on-retention-of-polymer-infiltrated-ceramic-crowns-to-a-one-piece-zirconia-implant
#16
Nadja Rohr, Stefan Brunner, Sabrina Märtin, Jens Fischer
STATEMENT OF PROBLEM: The best procedure for cementing a restoration to zirconia implants has not yet been established. PURPOSE: The purpose of this in vitro study was to measure the retention of polymer-infiltrated ceramic crowns to zirconia 1-piece implants using a wide range of cements. The effect of ceramic primer treatment on the retention force was also recorded. The retention results were correlated with the shear bond strength of the cement to zirconia and the indirect tensile strength of the cements to better understand the retention mechanism...
April 28, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28461044/influence-of-laser-irradiation-on-the-push-out-bond-strength-between-a-glass-fiber-post-and-root-dentin
#17
Karla G F Gomes, Natália S Faria, Walter R Neto, Vivian Colucci, Erica A Gomes
STATEMENT OF PROBLEM: A major issue related to the failure of endodontically treated teeth restored with an intraradicular post is gradual debonding of the glass fiber post, resin cement, and dentin. PURPOSE: The purpose of this in vitro study was to evaluate the influence of laser irradiation on the push-out bond strength of glass fiber posts to radicular dentin. MATERIAL AND METHODS: Thirty-two mandibular bovine incisors were endodontically treated and divided into 4 groups according to the surface treatment of the post: silane control (GC); irradiation with Er:YAG (GYAG); irradiation with Er,Cr:YSGG (GCR); and 980-nm diode laser (GDI) application...
April 28, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28456557/no-post-no-core-approach-to-restore-severely-damaged-posterior-teeth-an-up-to-10-year-retrospective-study-of-documented-endocrown-cases
#18
Marcia M Belleflamme, Sabine O Geerts, Marie M Louwette, Charlotte F Grenade, Alain J Vanheusden, Amélie K Mainjot
OBJECTIVES: The objectives of the present study were to (1) retrospectively evaluate documented cases of ceramic and composite endocrowns performed using immediate dentin sealing (IDS); (2) correlate failures with clinical parameters such as tooth preparation characteristics and occlusal parameters. METHODS: 99 documented cases of endocrowns were evaluated after a mean observation period of 44.7±34.6months. A classification of restorations was established in function of the level of damage of residual tooth tissues after preparation, from 1 to 3...
April 27, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28444011/prototype-to-measure-bracket-debonding-force-in-vivo
#19
Jéssika Lagni Tonus, Fernanda Borguetti Manfroi, Gilberto Antonio Borges, Eduardo Correa Grigolo, Sérgio Helegda, Ana Maria Spohr
INTRODUCTION: Material biodegradation that occurs in the mouth may interfere in the bonding strength between the bracket and the enamel, causing lower bond strength values in vivo, in comparison with in vitro studies. OBJECTIVE: To develop a prototype to measure bracket debonding force in vivo and to evaluate, in vitro, the bond strength obtained with the prototype. METHODS: A original plier (3M Unitek) was modified by adding one strain gauge directly connected to its claw...
February 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28435620/the-effect-of-resin-cement-type-and-cleaning-method-on-the-shear-bond-strength-of-resin-cements-for-recementing-restorations
#20
Roodabeh Koodaryan, Ali Hafezeqoran, Amin Khakpour Maleki
PURPOSE: This laboratory study assessed the effect of different dentin cleaning procedures on shear bond strength of resin cements for recementing prosthesis. MATERIALS AND METHODS: 4 × 4 flat surface was prepared on the labial surface of 52 maxillary central incisors. Metal frames (4 × 4 × 1.5 mm) were cast with nickel-chromium alloy. All specimens were randomly divided into 2 groups to be cemented with either Panavia F2.0 (P) or RelyX Ultimate (U) cement. The initial shear bond strength was recorded by Universal Testing Machine at a crosshead speed of 0...
April 2017: Journal of Advanced Prosthodontics
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