Bonding Strength of Lithium Disilicate Adhesive Crowns with Different Occluso-Cervical Preparation Heights and Cement Types

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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Premolar Axial Wall Height Effect on CAD/CAM Crown Retention

Operative Dentistry ◽

10.2341/16-086-l ◽

2016 ◽

Vol 41 (6) ◽

pp. 666-671 ◽

Cited By ~ 1

Author(s):

C Gillette ◽

R Buck ◽

N DuVall ◽

S Cushen ◽

M Wajdowicz ◽

...

Keyword(s):

Computer Aided Design ◽

Lithium Disilicate ◽

Resin Cement ◽

Failure Resistance ◽

All Ceramic ◽

Computer Aided ◽

Cad Cam ◽

Ceramic Crowns ◽

Aided Design ◽

Post Hoc

SUMMARY Objective: To evaluate the significance of reduced axial wall height on retention of adhesively luted, all-ceramic, lithium disilicate premolar computer-aided design/computer-aided manufacturing (CAD/CAM) crowns based on preparations with a near ideal total occlusal convergence of 10°. Methods: Forty-eight recently extracted premolars were randomly divided into four groups (n=12). Each group received all-ceramic CAD/CAM crown preparations featuring axial wall heights of 0, 1, 2, and 3 mm, respectively, all with a 10° total occlusal convergence. Scanned preparations were fitted with lithium disilicate all-ceramic crowns that were luted with a self-etching resin cement. Specimens were tested to failure at a 45° angle to the tooth long axis with failure load converted to megapascals (MPa) based on the measured bonding surface area. Mean data were analyzed using analysis of variance/Tukey's post hoc test (α=0.05). Results: Lithium disilicate crowns adhesively luted on preparations with 0 axial wall height demonstrated significantly less failure resistance compared with the crowns luted on preparations with axial wall heights of 1 to 3 mm. There was no failure stress difference between preparations with 1 to 3 mm axial wall height. Conclusions: Under conditions of this study, adhesively luted lithium disilicate bicuspid crowns with a total occlusal convergence of 10° demonstrated similar failure resistance independent of axial wall height of 1 to 3 mm. This study provides some evidence that adhesion combined with an ideal total occlusal convergence may compensate for reduced axial wall height.

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A comparison of the adhesive strength of zinc phosphate and self-adhesive resin cement as fiber post cementation materials

Dental Journal (Majalah Kedokteran Gigi) ◽

10.20473/j.djmkg.v50.i4.p226-229 ◽

2017 ◽

Vol 50 (4) ◽

pp. 226

Author(s):

Setyawan Bonifacius ◽

Deddy Firman ◽

Hasna Djiab

Keyword(s):

Adhesion Strength ◽

Adhesive Strength ◽

Zinc Phosphate ◽

Resin Cement ◽

Fiber Post ◽

Adhesive Resin ◽

Dental Practitioners ◽

Adhesive Resin Cement ◽

Group 2 ◽

Group 1

Background: The use of fiber post has become commonplace among dental practitioners due to its several advantages. In accordance with the intended use of post which provides retention for coronal restoration, a cement is used that can provide high quality adhesion. Conventional resin cement has long been adopted as a cementation material for consumer fiber post. However, allowing attachment fiber post failure due to errors in the cementing procedure leads to complications. Purpose: This study aimed to compare the adhesion strength of zinc phosphate cement and self-adhesive resin cement as fiber post cementation material. Both consumer cements were easy to use and cheap. Methods: The samples used numbered up to 20 and were divided into two groups. group 1 used zinc phosphate cement, while group 2 used self-adhesive resin cement. Results: The value of the average adhesion strength of group 1 (zinc phosphate) was 82.65 N, whereas that of group 2 (self-adhesive resin) was 402.81 N. Conclusion: This study concluded that the adhesive strength of self-adhesive resin cement as fiber post cementation material was higher than that of zinc phosphate cement.

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Effect of differences in the type of restoration and adhesive resin cement system on the bonding of CAD/CAM ceramic restorations

Dental Materials Journal ◽

10.4012/dmj.2019-308 ◽

2020 ◽

Vol 39 (6) ◽

pp. 1022-1032

Author(s):

Seisuke KOSHIDA ◽

Masahiko MAENO ◽

Yoichiro NARA

Keyword(s):

Resin Cement ◽

Adhesive Resin ◽

Cement System ◽

Cad Cam ◽

Adhesive Resin Cement ◽

Ceramic Restorations

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Effect of Silanization on Microtensile Bond Strength of Different Resin Cements to a Lithium Disilicate Glass Ceramic

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1818 ◽

2016 ◽

Vol 17 (2) ◽

pp. 149-153 ◽

Cited By ~ 7

Author(s):

Cristina Parise Gré ◽

Renan C de Ré Silveira ◽

Shizuma Shibata ◽

Carlo TR Lago ◽

Luiz CC Vieira

Keyword(s):

Bond Strength ◽

Glass Ceramic ◽

Hydrofluoric Acid ◽

Lithium Disilicate ◽

Resin Cement ◽

Microtensile Bond Strength ◽

Resin Cements ◽

Adhesive Resin ◽

Silane Coupling ◽

Adhesive Resin Cement

ABSTRACT Aim This study evaluated the influence of a silane-coupling agent on the bond strength of a self-adhesive cement and a conventional resin cement to a lithium disilicate glass ceramic. Materials and methods A total of eight ceramic blocks were fabricated and divided into four groups (n = 2). In groups 1 and 3, ceramic surfaces were etched with hydrofluoric acid 10% for 20 seconds, rinsed for 30 seconds, and air-dried. One layer of a silane agent was applied onto all ceramic specimens and air-dried for 30 seconds. In groups 2 and 4, ceramic surfaces were etched with hydrofluoric acid, rinsed, and air-dried without application of the silane-coupling agent. The ceramic blocks were bonded to a block of composite with a self-adhesive resin cement or with a conventional resin cement, according to the manufacturer's instructions. After 24 hours in distilled water at 37°C, the specimens were sectioned perpendicular to the bonding interface area to obtain beams with a bonding area of 0.8 mm2 and submitted to a microtensile bond strength test at a crosshead speed of 0.5 mm/min. Data were statistically analyzed with one-way analysis of variance and the Games–Howell post hoc test (p = 0.05). Fractured specimens were examined under optical microscopy at 40× magnification. Results Silanization resulted in higher microtensile bond strength compared to groups without silane. No significant differences were found between the conventional resin cement and the self-adhesive resin cement with silane agent (p = 0.983), and without silane agent (p = 0.877). Conclusion Silanization appears to be crucial for resin bonding to a lithium disilicate-based ceramic, regardless of the resin cement used. The self-adhesive resin cement performed as well as the conventional resin cement. Clinical significance Applying one layer of a silane-coupling agent after etching the ceramic surface with hydrofluoric acid 10% enhanced the bond strength between resin cements and a glass ceramic. How to cite this article Gré CP, de Ré Silveira RC, Shibata S, Lago CTR, Vieira LCC. Effect of Silanization on Microtensile Bond Strength of Different Resin Cements to a Lithium Disilicate Glass Ceramic. J Contemp Dent Pract 2016;17(2):149-153.

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Simplified cementation of lithium disilicate crowns: Retention with various adhesive resin cement combinations

Journal of Prosthetic Dentistry ◽

10.1016/j.prosdent.2017.07.012 ◽

2018 ◽

Vol 119 (5) ◽

pp. 826-832 ◽

Cited By ~ 9

Author(s):

Glen H. Johnson ◽

Xavier Lepe ◽

Amanda Patterson ◽

Oliver Schäfer

Keyword(s):

Lithium Disilicate ◽

Resin Cement ◽

Adhesive Resin ◽

Adhesive Resin Cement

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Adhesion of cast metal alloy and lithium disilicate copings luted to different core build-up materials with self-adhesive resin cement

Journal of Adhesion Science and Technology ◽

10.1080/01694243.2016.1208997 ◽

2016 ◽

Vol 31 (3) ◽

pp. 242-249

Author(s):

Ziad Nawaf Al-Dwairi ◽

Khalil Aleisa ◽

Abdulhameed Al-Beshr ◽

Yazeed Al-Habdan ◽

Faisal Al-Harbi ◽

...

Keyword(s):

Lithium Disilicate ◽

Metal Alloy ◽

Resin Cement ◽

Adhesive Resin ◽

Cast Metal ◽

Adhesive Resin Cement

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Nanoleakage for Self-Adhesive Resin Cements used in Bonding CAD/CAD Ceramic Material to Dentin

European Journal of Dentistry ◽

10.1055/s-0039-1698893 ◽

2011 ◽

Vol 05 (03) ◽

pp. 281-290 ◽

Cited By ~ 2

Author(s):

Wafa El-Badrawy ◽

Randa Mohamed Hafez ◽

Abeer Ibrahim Abo El Naga ◽

Doaa Ragai Ahmed

Keyword(s):

Nitrate Solution ◽

Silver Nitrate Solution ◽

Resin Cement ◽

Resin Cements ◽

Adhesive Resin ◽

Nail Polish ◽

Significant Difference ◽

Cad Cam ◽

Ceramic Blocks ◽

Post Hoc

ABSTRACTObjectives: To determine nanoleakage of CAD/CAM ceramic blocks bonded to dentin with selfadhesive resin cement. Methods: Eighteen sound extracted human molars were sterilized and sectioned into 3 mm-thick dentin sections. Trilux Cerec Vitablocks (Vita) were also sectioned into 3 mm sections, surfacetreated using 5% hydrofluoric acid-etchant, and then coated with silane primer (Vita). Trilux and dentin sections were cemented together by means of three resin cements: Rely-X Unicem (3M/ ESPE), BisCem (Bisco), and Calibra (Dentsply), according to manufacturers' recommendations. Calibra was used in conjunction with Prime/Bond-NT adhesive (Dentsply), while the other two are self-adhesive. The bonded specimens were stored for 24h in distilled water at 37°C. Specimens were vertically sectioned into 1 mm- thick slabs, yielding up to six per specimen. Two central slabs were randomly chosen from each specimen making up the cement groups (n=12). Each group was subdivided into two subgroups (n=6), a control and a thermocycled subgroup (5-55°C) for 500 cycles. Slabs were coated with nail polish up to 1 mm from the interface, immersed in a 50% silver nitrate solution for 24h, and tested for nanoleakage using Quanta Environmental SEM and EDAX. Data were statistically analyzed using two-way ANOVA and Tukey's post-hoc tests. Results: Rely-X Unicem and Calibra groups demonstrated no significant difference in the percentage of silver penetration, while the BisCem group revealed a significantly higher percentage (P≤.05). Thermocycling (500 cycles) did not have a statistically significant effect on the percentage of silver penetration (P>.05). Conclusions: One self-adhesive-resin cement demonstrated a similar sealing ability when compared with a standard resin cement. Thermo-cycling did not significantly increase dye penetration under the test conditions. (Eur J Dent 2011;5:281-290)

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