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Gerhard Handel - One of the best experts on this subject based on the ideXlab platform.
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self adhesive Resin Cement versus zinc phosphate luting material a prospective clinical trial begun 2003
Dental Materials, 2009Co-Authors: Michael Behr, Martin Rosentritt, Reinhold Lang, Jutta Wimmer, Carola Kolbeck, Ralf Burgers, Gerhard HandelAbstract:Abstract Objectives The literature demonstrates that conventional luting of metal-based restorations using zinc phosphate Cements is clinically successful over 20 years. This study compared the clinical outcomes of metal-based fixed partial dentures luted conventionally with zinc phosphate and self-adhesive Resin Cement. Methods Forty-nine patients (mean age 54 ± 13 years) received 49 metal-based fixed partial dentures randomly luted using zinc phosphate (Richter & Hoffmann, Berlin, Germany) or self-adhesive Resin Cement (RelyX Unicem Aplicap, 3M ESPE, Germany) at the University Medical Center Regensburg. The core build-up material was highly viscous glass ionomer; the finishing line was in dentin. The study included 42 posterior, 5 anterior crowns and two onlays. Forty-seven restorations were made of precious alloys, 2 of non-precious alloys. The restorations were clinically examined every year. The clinical performance was checked for plaque (0–5; PI, Quigley-Hein), bleeding (0–4; PBI; Muhlemann) and attachment scores. The examination included pulp vitality and percussion tests. Statistics Means of scores, standard deviation, cumulative survival and complication rates were calculated using life tables. Results The mean observation time was 3.16 ± 0.6 years (min: 2.0; max: 4.5 years). During that time no restoration was lost, no reCementation became necessary. One endodontic treatment was performed in the self-adhesive composite group after 2.9 years. At study end bleeding (1.44 RelyX Unicem vs. 1.25 zinc phosphate) and plaque (1.64 RelyX Unicem vs. 1.0 zinc phosphate) scores showed no statistically significant difference. Significance The self-adhesive Resin Cement performed clinically as well and can be used as easily as zinc phosphate Cement to retain metal-based restorations over a 38-month observation period.
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marginal adaptation in dentin of a self adhesive universal Resin Cement compared with well tried systems
Dental Materials, 2004Co-Authors: Michael Behr, Martin Rosentritt, T Regnet, Reinhold Lang, Gerhard HandelAbstract:Abstract Objectives . This study compares the marginal adaptation of a new self-adhesive universal Resin Cement with only one application step, to the marginal adaptation of established Cements and their corresponding adhesive systems. Methods . All-ceramic crowns were inserted on human molars using a new self-adhesive universal Resin Cement without and with one pre-treatment step, a Resin Cement with a smear-layer removing and a compomer Cement with a smear-layer dissolving adhesive system. After simulation of five years oral stress, the marginal adaptation was evaluated by dye penetration and scanning electronic microscope analysis using the replica technique. Results . Scanning electron microscopy: all investigated luting agents showed comparable amounts of ‘perfect margin’ ranging between 88–98% (median). Dye penetration: the self-adhesive system had significantly lower dye penetration (18–25%, median). Significance . The results indicate that a self-adhesive universal Resin Cement without pre-treatment can provide a marginal adaptation at dentin which is comparable to established luting agents.
C S Shruthi - One of the best experts on this subject based on the ideXlab platform.
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evaluation of the sealing ability of Resin Cement used as a root canal sealer an in vitro study
Journal of Conservative Dentistry, 2012Co-Authors: Rvinod Kumar, C S ShruthiAbstract:Aim: This study was designed to evaluate the apical seal of root canals obturated with Resin Cement as a root canal sealer and compare with that of the glass ionomer and zinc oxide eugenol sealers using a cold lateral condensation gutta-percha technique. Background: Successful root canal treatment requires three-dimensional obturation of the root canal system with nonirritating biomaterials. None of the available materials are capable of providing a fluid tight seal. Materials and Methods: The prepared teeth were randomly divided into three groups of 15 each to be obturated using three different sealers. Group I: zinc oxide eugenol (Tubliseal), Group II: Glass ionomer (Ketac Endo), and Group III: Resin Cement (C & B Superbond). All the specimens were stored in 100% relative humidity at 37° for 24 h. The specimens were placed in 2% methylene blue dye for 48 h and sectioned. The dye penetration was evaluated under a stereomicroscope. Results: The Kruskal-Wallis test was carried out to test the equality of mean. All the specimens showed dye leakage, and there was a statistically significant difference (P Conclusion: Resin Cement sealed the root canals significantly better when compared with zinc oxide eugenol and glass ionomer sealers.
Michael Behr - One of the best experts on this subject based on the ideXlab platform.
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self adhesive Resin Cement versus zinc phosphate luting material a prospective clinical trial begun 2003
Dental Materials, 2009Co-Authors: Michael Behr, Martin Rosentritt, Reinhold Lang, Jutta Wimmer, Carola Kolbeck, Ralf Burgers, Gerhard HandelAbstract:Abstract Objectives The literature demonstrates that conventional luting of metal-based restorations using zinc phosphate Cements is clinically successful over 20 years. This study compared the clinical outcomes of metal-based fixed partial dentures luted conventionally with zinc phosphate and self-adhesive Resin Cement. Methods Forty-nine patients (mean age 54 ± 13 years) received 49 metal-based fixed partial dentures randomly luted using zinc phosphate (Richter & Hoffmann, Berlin, Germany) or self-adhesive Resin Cement (RelyX Unicem Aplicap, 3M ESPE, Germany) at the University Medical Center Regensburg. The core build-up material was highly viscous glass ionomer; the finishing line was in dentin. The study included 42 posterior, 5 anterior crowns and two onlays. Forty-seven restorations were made of precious alloys, 2 of non-precious alloys. The restorations were clinically examined every year. The clinical performance was checked for plaque (0–5; PI, Quigley-Hein), bleeding (0–4; PBI; Muhlemann) and attachment scores. The examination included pulp vitality and percussion tests. Statistics Means of scores, standard deviation, cumulative survival and complication rates were calculated using life tables. Results The mean observation time was 3.16 ± 0.6 years (min: 2.0; max: 4.5 years). During that time no restoration was lost, no reCementation became necessary. One endodontic treatment was performed in the self-adhesive composite group after 2.9 years. At study end bleeding (1.44 RelyX Unicem vs. 1.25 zinc phosphate) and plaque (1.64 RelyX Unicem vs. 1.0 zinc phosphate) scores showed no statistically significant difference. Significance The self-adhesive Resin Cement performed clinically as well and can be used as easily as zinc phosphate Cement to retain metal-based restorations over a 38-month observation period.
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marginal adaptation in dentin of a self adhesive universal Resin Cement compared with well tried systems
Dental Materials, 2004Co-Authors: Michael Behr, Martin Rosentritt, T Regnet, Reinhold Lang, Gerhard HandelAbstract:Abstract Objectives . This study compares the marginal adaptation of a new self-adhesive universal Resin Cement with only one application step, to the marginal adaptation of established Cements and their corresponding adhesive systems. Methods . All-ceramic crowns were inserted on human molars using a new self-adhesive universal Resin Cement without and with one pre-treatment step, a Resin Cement with a smear-layer removing and a compomer Cement with a smear-layer dissolving adhesive system. After simulation of five years oral stress, the marginal adaptation was evaluated by dye penetration and scanning electronic microscope analysis using the replica technique. Results . Scanning electron microscopy: all investigated luting agents showed comparable amounts of ‘perfect margin’ ranging between 88–98% (median). Dye penetration: the self-adhesive system had significantly lower dye penetration (18–25%, median). Significance . The results indicate that a self-adhesive universal Resin Cement without pre-treatment can provide a marginal adaptation at dentin which is comparable to established luting agents.
Marco Ferrari - One of the best experts on this subject based on the ideXlab platform.
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effect of surface pre treatments on the zirconia ceramic Resin Cement microtensile bond strength
Dental Materials, 2011Co-Authors: Alessio Casucci, Francesca Monticelli, Cecilia Goracci, Claudia Mazzitelli, Amerigo Cantoro, Federica Papacchini, Marco FerrariAbstract:Abstract Objective To evaluate the influence of different surface treatments on the microtensile bond strength of Resin Cement to zirconia ceramic. Materials and methods Twelve cylinder-shaped ( ∅ 12 × 5.25 mm high) blocks of a commercial zirconium-oxide ceramic (Cercon ® Zirconia, DENTSPLY) were randomly divided into 4 groups ( n = 3), based on the surface treatment to be performed: (1) airborne particle abrasion with 125 μm Al 2 O 3 particles (S); (2) selective infiltration etching (SIE); (3) experimental hot etching solution applied for 30 min (ST) and (4) no treatment (C). Paradigm MZ100 blocks (3M ESPE) were cut into twelve cylinders of 4 mm in thickness. Composite cylinders were bonded to conditioned ceramics using a Resin Cement (Calibra ® , DENTSPLY), in combination with the proprietary adhesive system. After 24 h bonded specimens were cut into microtensile sticks and loaded in tension until failure. Bond strength data were analyzed with Kruskall–Wallis and Dunn's Multiple Range test for multiple comparisons ( p Results Bond strength values achieved after SIE and ST treatment were significantly higher than after S treatment and without any treatment ( p Significance Conditioning the high-strength ceramic surface with SIE and ST treatments yielded higher bond strengths of the Resin Cement than when zirconia ceramic was treated with airborne particle abrasion or left untreated.
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light transmission through fiber post the effect on adhesion elastic modulus and hardness of dual cure Resin Cement
Dental Materials, 2009Co-Authors: Ivana Radovic, Gabriele Corciolani, Elisa Magni, Goranka Krstanovic, Vladimir Pavlovic, Zoran R Vulicevic, Marco FerrariAbstract:Objectives. The aim of this study was to investigate the effect of fiber post light transmitting ability to the continuity of Resin Cement-root dentin (C-RD) and Resin Cement-fiber post (C-FP) interface, elastic modulus and hardness of a dual-cure Resin Cement. Methods. Spectrophotometric measurements were applied for the determination of light transmission at coronal, middle and apical level as well as at the apical tip through Tech 21 X-OP (TECH) and DT Light Post (DT). Posts were Cemented using dual-cured Resin Cement (Calibra). Roots were sectioned longitudinally through the post. Epoxy Resin replicas were made and used to evaluate C-RD and C-FP interface under SEM. Modulus of elasticity (E) and Vicker’s hardness (VH) of the Cement layer were assessed. Results. No light transmission was detected through TECH. Light transmission through DT decreased from coronal to apical and rose at the apical tip. TECH presented a significantly lower percentage of continuous C-RD and C-FP interface in comparison to DT. Coronal third of C-RD interface in TECH specimens had a significantly higher percentage of continuity than apical third. No regional differences in continuity of C-RD interface were found in DT specimens. E and VH were significantly lower when TECH was used, and decreased from coronal to apical for both posts. Significance. Cementation of fiber post with no light transmitting ability using a dual-cured Resin Cement resulted in lower E and VH of the Cement layer, and lower percentage of continuous C-RD and C-FP interface in comparison to Cementation of light transmitting fiber post.
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efficacy of a self curing adhesive Resin Cement system on luting glass fiber posts into root canals an sem investigation
International Journal of Prosthodontics, 2001Co-Authors: Marco Ferrari, Alessandro Vichi, Simone Grandini, Cecilia GoracciAbstract:Purpose: The aim of this study was to evaluate the efficacy of a new bonding-luting system in Resin tag, adhesive lateral branch, and hybrid layer formation when used in combination with an experimental fiber post. Materials and Methods: Thirty anterior teeth extracted for periodontal reasons were selected for this study. They were endodontically treated and randomly divided into three groups of 10 samples each: group 1 = Excite light-cured bonding agent in combination with Variolink II Resin Cement; group 2 = Excite dual-cured bonding agent self-activated by an experimental microbrush in combination with MultiLink Resin Cement; and group 3 = one-step bonding system in combination with Dual Link Resin Cement. In groups 1 and 3, the primer-adhesive solution was light cured before placing the Resin Cement and the post, whereas in group 2 the adhesive/luting materials were not light cured. Twenty FRC Postec translucent posts (groups 1 and 2) and 10 EndoAesthetic translucent fiber posts (group 3) were used. One week later, the root samples were processed for scanning electron microscopic (SEM) observations. Results: Microscopic examinations of restored interfaces from group 2 revealed a Resin-dentin interdiffusion zone higher than that seen in samples from groups 1 and 3 (P < .05). At the apical and middle thirds, the samples from group 2 showed significantly more Resin tags than the other two groups. Conclusion: The dual-cure self-activating system showed a more uniform Resin tag and Resin-dentin interdiffusion zone formation along root canal walls than light-curing systems. Int J Prosthodont 2001;14:543‐549.
Marco Antonio Bottino - One of the best experts on this subject based on the ideXlab platform.
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bonding of y tzp to dentin effects of y tzp surface conditioning Resin Cement type and aging
Operative Dentistry, 2014Co-Authors: Marco Antonio Bottino, Cesar Dalmolin Bergoli, E G Lima, Susana Maria Salazar Marocho, Rodrigo Othavio De Assuncao E Souza, Luiz Felipe ValandroAbstract:Clinical Relevance The application of the low-fusing glaze porcelain followed by hydrofluoric acid etching and silanization and tribochemical silicatization generates strong bonds between Resin Cement and zirconia. Panavia generates stronger bonds than does Clearfil.
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effect of ceramic shade on the degree of conversion of a dual cure Resin Cement analyzed by ftir
Dental Materials, 2013Co-Authors: Sheila Pestana Passos, Marco Antonio Bottino, Estevao Tomomitsu Kimpara, Gildo Coelho Santos, Amin S RizkallaAbstract:Abstract Objectives The aim of this research was to evaluate the degree of monomer conversion of different Resin Cement shades when photocured under different feldspathic ceramic shades. The photocuring time was also evaluated as well as the translucency of each ceramic shade. Methods Three VITA VM7 ceramic shades (Base Dentin 0M1, Base Dentin 2M2 and Base Dentin 5M3) were used to determine the translucency percentage. A spectrophotometer MiniScan was used to measure the opacity percentage of each specimen (2-mm-thick) and then the translucency was calculated. To measure the degree of conversion (DC), the Resin Cement (Variolink II; A3 Yellow and transparent) specimens (thickness: 100 μm) were photocured under a ceramic block (2-mm-thick) for 20 or 40 s. Specimens photocured without the ceramic block were used as control. Sixteen groups ( n = 3) were evaluated. Micro-ATR/FTIR spectrometry was used to evaluate the extent of polymerization of all specimens after 24 h. The %DC was calculated of experimentally polymerized versus maximally polymerized composite. Results The translucency percentages of 0M1, 2M2 and 5M3 ceramics were 12.41 (1.02)%, 5.75 (1.91)% and 1.07 (0.03)%, respectively. The %DC of both Resin Cement shades cured under ceramic 5M3 was significantly lower than the other groups ( p p > 0.05), with the exception of the transparent Cement photocured for 40 s. Conclusion Photocuring under 2 mm ceramic showed that the increase in chroma saturation significantly decreased Variolink II Resin Cement %DC (100-μm-thick).
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Durability of adhesion between feldspathic ceramic and Resin Cements: effect of adhesive Resin, polymerization mode of Resin Cement, and aging.
Journal of Prosthodontics, 2013Co-Authors: Aleska Dias Vanderlei, Sheila Pestana Passos, Marco Antonio Bottino, Mutlu Ozcan, Luiz Felipe ValandroAbstract:Purpose: Adhesive Cementation is an important step for restorations made of feldspathic ceramic as it increases the strength of such materials. Incorrect selection of the adhesive Resin and the Resin Cement to adhere to the ceramic surface and their durability against aging can affect the adhesion between these materials and the clinical performance. This study evaluated the effect of adhesive Resins with different pHs, Resin Cements with different polymerization modes, and aging on the bond strength to feldspathic ceramic. Materials and Methods: One surface of feldspathic ceramic blocks (VM7) (N = 90) (6.4 × 6.4 × 4.8 mm 3 ) was conditioned with 10% hydrofluoric acid for 20 seconds, washed/dried, and silanized. Three adhesive Resins (Scotchbond Multi-Purpose Plus [SBMP], pH: 5.6; Single Bond [SB], pH: 3.4; and PrimeB TC, test was performed after thermocycling (12,000× ,5 ◦ Ct o 55 ◦ C) and water storage at 37 ◦ C for 150 days. Considering the three factors of the study (adhesive [3 levels], Resin Cement [3 levels], aging [2 levels]), 18 groups were studied. The microtensile bond strength data were analyzed using 3-way ANOVA and Tukey’s post hoc test (α = 0.05). Results: Adhesive Resin type (p < 0.001) and the Resin Cement affected the mean bond strength (p = 0.0003) (3-way ANOVA). The NT adhesive associated with the chemically polymerized Resin Cement in both dry (8.8 ± 6.8 MPa) and aged conditions (6.9 ± 5.9 MPa) presented statistically lower bond strength results, while the SBMP adhesive Resin, regardless of the Resin Cement type, presented the highest results (15.4 to 18.5 and 14.3 to 18.9 MPa) in both dry and aged conditions, respectively (Tukey’s test). Conclusion: Application of a low-pH adhesive Resin onto a hydrofluoric acid etched and silanized feldspathic ceramic surface in combination with chemically polymerized Resin Cement did not deliver favorable results. The use of adhesive Resin with high pH could be clinically advised for the photo-, dual-, and chemically polymerized Resin Cements tested.
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the adhesive system and root canal region do not influence the degree of conversion of dual Resin Cement
Journal of Applied Oral Science, 2010Co-Authors: P C Pereira, Marco Antonio Bottino, Renata Marques De Melo, Carolina De Andrade Lima Chaves, Graziela Galhano, Ivan BalducciAbstract:OBJECTIVES: The aim of this study was to evaluate the influence of two adhesive systems and the post space region on the degree of conversion of dual Resin Cement and its bond strength to root dentin. MATERIAL AND METHODS: One three-step etch-and-rinse (All-bond 2, Bisco) and another one-step self-etch (Xeno III, Dentsply) adhesive systems were applied on 20 (n=10) crownless bovine incisors, at 12-mm-deep post space preparation, and a fiber post (FRC Postec, Ivoclar) was Cemented using a dual cure Resin Cement (Duo-Link, Bisco). Three transverse sections (3 mm) were obtained, being one from each study region (cervical, middle and apical). The degree of conversion of the dual cure Resin Cement was determined by a micro-Raman spectrometer. The data (%) were submitted to repeated-measures analysis of variance and Tukey's test (p<0.05). RESULTS: For both groups, the degree of conversion means (%) (All bond 2cervical = 69.3; All bond 2middle = 55.1; All bond 2apical= 56; Xeno III cervical = 68.7; Xeno IIImiddle = 68.8; Xeno III apical = 54.3) were not significantly different along the post space regions (p<0.05). CONCLUSION: Neither the adhesive nor the post space region influenced the degree of conversion of the Cement layer.
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microtensile bond strength of a Resin Cement to glass infiltrated zirconia reinforced ceramic the effect of surface conditioning
Dental Materials, 2006Co-Authors: Regina Amaral, Marco Antonio Bottino, Mutlu Ozcan, Luiz Felipe ValandroAbstract:Objectives. This study evaluated the effect of three surface conditioning methods on the microtensile bond strength of Resin Cement to a glass-infiltrated zirconia-reinforced alumina-based core ceramic. Methods. Thirty blocks (5 x 5 x 4 mm) of In-Ceram Zirconia ceramics (In-Ceram Zirconia-INC-ZR, VITA) were fabricated according to the manufacturer's instructions and duplicated in Resin composite. The specimens were polished and assigned to one of the following three treatment conditions (n=10): (1) Airborne particle abrasion with 110 mu m Al2O3 particles + silanization, (2) Silica coating with 110 mu m SiOx particles (Rocatec Pre and Plus, 3M ESPE) + silanization, (3) Silica coating with 30 mu m SiOx particles (CoJet, 3M ESPE) + silanization. The ceramic-composite blocks were Cemented with the Resin Cement (Panavia F) and stored at 37 degrees C in distilled water for 7 days prior to bond tests. The blocks were cut under coolant water to produce bar specimens with a bonding area of approximately 0.6 mm(2). The bond strength tests were performed in a universal testing machine (cross-head speed: 1 mm/min). The mean bond strengths of the specimens of each block were statistically analyzed using ANOVA and Tukey's test (alpha Results. Silica coating with silanization either using 110 mu m SiOx or 30 mu m SiOx particles increased the bond strength of the Resin Cement (24.6 +/- 2.7 MPa and 26.7 +/- 2.4 MPa, respectively) to the zirconia-based ceramic significantly compared to that of airborne particle abrasion with 110-mu m Al2O3 (20.5 +/- 3.8 MPa) (ANOVA, P <0.05). Significance. Conditioning the INC-ZR ceramic surfaces with silica coating and silanization using either chairside or laboratory devices provided higher bond strengths of the Resin Cement than with airborne particle abrasion using 110 mu m Al2O3. (c) 2005 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.