Effect of selective enamel etching on clinical performance of CAD/CAM partial ceramic crowns luted with a self-adhesive resin cement

The aim of this study was to evaluate if adhesion technology with CAD/CAM can compensate for the reduction of occluso cervical preparation heights using different types of dental cement. The de-bonding failure types were then assessed. Here, 72 caries-free extracted human premolar teeth were prepared to have a remaining occlusal height of two, three, and four mm. IPS e.max lithium disilicate CAD/CAM crowns were cemented with adhesive resin cement Panavia SA, self-adhesive resin cement, RelyX Unicem Aplicap, and zinc phosphate cement. The cementation techniques were based on the manufacturer’s instructions. After thermocycling, all samples were tested for tensile bond strength via an Instron machine. One-way analysis of variance (ANOVA) with post hoc testing (P < 0.05) was performed. The means TBS for the two, three, and four-mm OCHP groups were 2.72±0.69, 3.06±0.82, and 3.25±0.79.0 MPa; ARC, SARC, and ZPC were 3.41±0.51, 3.45±0.41, 2.08±0.35 MPa, respectively with significant differences in both. The mixed cement had failures in the resin cement groups. Failure was predominantly cohesive in the zinc phosphate group. Resin cement had the highest SBS values versus ZPC values when both bonded to lithium disilicate crowns with different occlusal heights. The failure of the adhesive to the crown and/or to the tooth were the highest for the four types of resin cement. Around 25% were cohesive failures with resin cement, but this was predominately adhesive in crowns in zinc phosphate regardless of the preparation heights.

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Influence of cement type on the fracture resistance of resin nanoceramic crowns over knife-edge margins: A pilot study

Revista Portuguesa de Estomatologia Medicina Dentária e Cirurgia Maxilofacial ◽

10.24873/j.rpemd.2021.09.844 ◽

2021 ◽

Vol 62 (3) ◽

Author(s):

Joana Guerreiro ◽

◽

Rafael Dias ◽

José Carracho ◽

◽

...

Keyword(s):

Fracture Resistance ◽

Glass Ionomer Cement ◽

Resin Cement ◽

Knife Edge ◽

Adhesive Resin ◽

Resin Modified Glass Ionomer ◽

Cad Cam ◽

Adhesive Resin Cement ◽

Group 2 ◽

Ionomer Cement

Objective: To evaluate the influence of the type of cement on the fracture resistance of full-contour resin nanoceramic crowns cemented over preparations with knife-edge margins. Methods: A right lower premolar typodont model was prepared with a 1.5-mm axial reduction, a 2.0-mm occlusal reduction, and a knife-edge vertical margin. An anatomical crown was designed from the digital scanning of the preparation using CAD/CAM software. Then, 20 crowns were milled from resin nanoceramic CAD/CAM blocks (Cerasmart270™) as well as a replica of the dental preparation in a cobalt-chrome alloy. The 20 crowns were randomly divided into two groups. Group 1 crowns were cemented with self-adhesive resin cement (G-CEM LinkAce™) and group 2 crowns with resin-modified glass ionomer cement (FujiCEM™ 2). Subsequently, they were subjected to a loading test on an Instron universal testing machine until fracture occurred. The data were statistically analyzed using the parametric Student’s t-test (α=0.05). Results: The type of cement was shown to have a statistically significant effect on the crowns’ fracture resistance (p <0.001). Group 1 presented a mean of 1284.3±340.19 Newtons, much higher than the mean recorded in group 2, of 417.9±106.35 Newtons, with an increase of 207.3% in the fracture resistance after self-adhesive luting. Conclusions: Resin nanoceramic crowns cemented with self-adhesive resin cement showed considerably higher fracture resistance than those cemented with resin-modified glass ionomer cement.

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Effect of Surface Treatment of Two Ceramic Materials by Er,Cr:YSGG Laser Irradiation on The Shear Bond Strength to Resin Cement “A Comparative in-Vitro Study”

Brazilian Dental Science ◽

10.14295/bds.2020.v23i3.1950 ◽

2020 ◽

Vol 23 (3) ◽

Author(s):

Shahd Taha Mandil ◽

Hesham Katamish ◽

Tarek Salah

Keyword(s):

Bond Strength ◽

Surface Treatment ◽

Laser Irradiation ◽

Hydrofluoric Acid ◽

Shear Bond Strength ◽

Ceramic Materials ◽

Resin Cement ◽

Adhesive Resin ◽

Cad Cam ◽

Adhesive Resin Cement

Objective: The aim of this study is to assess the effect of Er,Cr:YSGG laser on the shear bond strength (SBS) and surface topography of two CAD/CAM ceramic materials bonded with self-adhesive resin cement. Material and methods: sixty ceramic CAD/CAM discs were obtained, 30 lithium disilicate (IPS Emax) and 30 hybrid resin ceramic (Vita Enamic). The Slices were allocated into six groups (n=10) according to ceramic material and surface treatment; Group (LD-C): IPS Emax treated with 9% hydrofluoric acid(HF), Groups (LD-P1) and (LD-P2): IPS Emax treated with Er,Cr:YSGG laser with parameters 1.5 W and 2.5 W, respectively. Group (RC-C): Vita Enamic treated with 9% hydrofluoric acid (HF), Groups (RC-P1) and (RC-P2): Vita Enamic treated with Er,Cr:YSGG laser with parameters 1.5 W and 2.5 W, respectively. All samples were cemented with self-adhesive resin cement and thermocycled for 5000 cycles. The SBS was measured using a universal testing machine and the mean values (MPa) were analyzed using Two-way (ANOVA) (P ≤ 0.05) and Bonferroni’s post-hoc test. Results: RC-C (16.55) showed highest SBS followed by LD-C (13.79), which revealed no statistically significant difference with RC-P1 (12.33) and RC-P2 (11.2). The lowest SBS values were found with LD-P1 (2.7) and LD-P2 (2.1). SEM analysis revealed Vita Enamic to have the highest surface roughness. Fracture pattern analysis showed adhesive failure with IPS Emax groups and mixed failure with Vita Enamic groups. Conclusion: Er,Cr:YSGG laser irradiation with the parameters used did not increase SBS of IPS Emax and Vita Enamic with composite resin compared to HF acid etching.KeywordsEr,Cr:YSGG laser; Shear bond strength; Surface treatment; Ceramic materials.

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Longevity of metal-ceramic crowns cemented with self-adhesive resin cement: a prospective clinical study

Brazilian Oral Research ◽

10.1590/1807-3107bor-2017.vol31.0022 ◽

2017 ◽

Vol 31 (0) ◽

Cited By ~ 3

Author(s):

Lucas Pradebon BRONDANI ◽

Tatiana PEREIRA-CENCI ◽

Vinicius Felipe WANDSHER ◽

Gabriel Kalil PEREIRA ◽

Luis Felipe VALANDRO ◽

...

Keyword(s):

Clinical Study ◽

Resin Cement ◽

Prospective Clinical Study ◽

Adhesive Resin ◽

Metal Ceramic ◽

Ceramic Crowns ◽

Adhesive Resin Cement

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Effect of sandblasting and/or priming treatment on the shear bond strength of self-adhesive resin cement to CAD/CAM blocks

Odontology ◽

10.1007/s10266-021-00635-y ◽

2021 ◽

Author(s):

Yuko Nagasawa ◽

Yoshikazu Eda ◽

Hirotaka Shigeta ◽

Marco Ferrari ◽

Hiroshi Nakajima ◽

...

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Resin Cement ◽

Adhesive Resin ◽

Cad Cam ◽

Adhesive Resin Cement

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Effect of surface treatment of CAD/CAM resin composites on the shear bond strength of self-adhesive resin cement

Dental Materials Journal ◽

10.4012/dmj.2019-431 ◽

2020 ◽

Author(s):

Yuko NAGASAWA ◽

Yasushi HIBINO ◽

Yoshikazu EDA ◽

Hiroshi NAKAJIMA

Keyword(s):

Bond Strength ◽

Surface Treatment ◽

Shear Bond Strength ◽

Resin Cement ◽

Resin Composites ◽

Adhesive Resin ◽

Cad Cam ◽

Adhesive Resin Cement ◽

Effect Of Surface

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Development of a Cavity Disinfectant Containing Antibacterial Monomer MDPB

Journal of Dental Research ◽

10.1177/0022034516663465 ◽

2016 ◽

Vol 95 (13) ◽

pp. 1487-1493 ◽

Cited By ~ 14

Author(s):

N. Hirose ◽

R. Kitagawa ◽

H. Kitagawa ◽

H. Maezono ◽

A. Mine ◽

...

Keyword(s):

Antibacterial Activity ◽

Bond Strength ◽

Bacterial Species ◽

Oral Bacteria ◽

Resin Cement ◽

Resin Cements ◽

Adhesive Resin ◽

Significant Difference ◽

Adhesive Resin Cement

An experimental cavity disinfectant (ACC) that is intended to be used for various direct and indirect restorations was prepared by adding an antibacterial monomer 12-methacryloyloxydodecylpyridinum bromide (MDPB) at 5% into 80% ethanol. The antibacterial effectiveness of ACC and its influences on the bonding abilities of resin cements were investigated. To examine the antibacterial activity of unpolymerized MDPB, the minimum inhibitory and bactericidal concentrations (MIC and MBC) were determined for Streptococcus mutans, Lactobacillus casei, Actinomyces naeslundii, Parvimonas micra, Enterococcus faecalis, Fusobacterium nucleatum, and Porphyromonas gingivalis. Antibacterial activities of ACC and the commercial cavity disinfectant containing 2% chlorhexidine and ethanol (CPS) were evaluated by agar disk diffusion tests through 7 bacterial species and by MIC and MBC measurement for S. mutans. The effects of ACC and CPS to kill bacteria in dentinal tubules were compared with an S. mutans–infected dentin model. Shear bond strength tests were used to examine the influences of ACC on the dentin-bonding abilities of a self-adhesive resin cement and a dual-cure resin cement used with a primer. Unpolymerized MDPB showed strong antibacterial activity against 7 oral bacteria. ACC produced inhibition zones against all bacterial species similar to CPS. For ACC and CPS, the MIC value for S. mutans was identical, and the MBC was similar with only a 1-step dilution difference (1:2). Treatment of infected dentin with ACC resulted in significantly greater bactericidal effects than CPS ( P < 0.05, analysis of variance and Tukey’s honest significant difference test). ACC showed no negative influences on the bonding abilities to dentin for both resin cements, while CPS reduced the bond strength of the self-adhesive resin cement ( P < 0.05). This study clarified that the experimental cavity disinfectant containing 5% MDPB is more effective in vitro than the commercially available chlorhexidine solution to eradicate bacteria in dentin, without causing any adverse influences on the bonding abilities of resinous luting cements.

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