A comparison of the micro-shear bond strength and failure mode of non-enclosed and mold-enclosed luting cements bonded to metal

SUMMARY This study tested the impact of Gluma Desensitizer on the shear bond strength (SBS) of two conventional (RelyX ARC, Panavia 21) and two self-adhesive (RelyX Unicem, G-Cem) resin luting cements after water storage and thermocycling. Human third molars (N=880) were embedded in acrylic resin. The buccal dentin was exposed. Teeth were randomly divided into four main groups, and the following cements were adhered: 1) RelyX ARC, 2) Panavia 21, 3) RelyX Unicem, and 4) G-Cem. In half of the teeth in each group, dentin was treated with Gluma Desensitizer. In the conventional cement groups, the corresponding etchant and adhesive systems were applied. SBS of the cements was tested after 1 hour (initial); at 1, 4, 9, 16, and 25 days of water storage; and at 1, 4, 9, 16, and 25 days of thermocycling. SBS data were analyzed by one-way analysis of variance (ANOVA); this was followed by the post hoc Scheffé test and a t-test. Overall, the highest mean SBS (MPa) was obtained by RelyX ARC (ranging from 14.6 ± 3.9 to 17.6 ± 5.2) and the lowest by Panavia 21 in combination with Gluma Desensitizer (ranging from 0.0 to 2.9 ± 1.0). All tested groups with and without desensitizer showed no significant decrease after aging conditions compared with baseline values (p>0.05). Only the Panavia 21/Gluma Desensitizer combination showed a significant decrease after 4 days of thermocyling compared with initial values and 1 day thermocycling. Self-adhesive cements with Gluma Desensitizer showed increased SBS after aging conditions (ranging from 7.4 ± 1.4 to 15.2 ± 3) compared with groups without desensitizer (ranging from 2.6 ± 1.2 to 8.8 ± 2.9). No cohesive failures in dentin were observed in any of the test groups. Although self-adhesive cements with and without desensitizer presented mainly adhesive failures after water storage (95.8%) and thermocyling (100%), conventional cement (RelyX ARC) showed mainly mixed failures (90.8% and 89.2%, after water storage and thermocyling, respectively). Application of the Gluma Desensitizer to dentin before cementation had a positive effect on the SBS of self-adhesive cements.

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Shear Bond Strength of Different Adhesive Systems to Primary Dentin and Enamel

Journal of Clinical Pediatric Dentistry ◽

10.17796/jcpd.31.1.2436up85l810667h ◽

2007 ◽

Vol 31 (1) ◽

pp. 35-40 ◽

Cited By ~ 7

Author(s):

Carla Miranda ◽

Luiz Henrique Maykot Prates ◽

Ricardo de Souza Vieira ◽

Maria Cristina Marino Calvo

Keyword(s):

Bond Strength ◽

Failure Mode ◽

Shear Bond Strength ◽

Adhesive System ◽

Mode Analysis ◽

Single Bond ◽

Adhesive Systems ◽

Mean Values ◽

Failure Mode Analysis ◽

Distal Direction

The aims of this study were to evaluate the shear bond strength (SBS) of four adhesive systems applied to primary dentin and enamel and verify, after SBS testing, the failure mode of the adhesive interface. Sixty extracted sound primary molars were selected and crowns were sectioned in a mesial-distal direction. Specimens were randomly assigned into two groups (adhesion to enamel and adhesion to dentin) and then subdivided into four subgroups according to the adhesive system (n=15): Scotchbond Multi-Purpose (SMP) – Single Bond (SB) – Clearfil SE Bond (and Adper Prompt LPop (APL) – SBS tests were performed and the obtained values were statistically analyzed using ANOVA and Tukey tests (p<0.05). The failure mode analysis was performed with a Scanning Electron Microscope (XL-30, Philips). SBS mean values on enamel were [MPa (SD)]: SMP – 27.89 (7.49); SB – 23.92 (8.8); CSB – 24.36 (6.69); APL – 25.96 (4.08); and on dentin: SMP – 17.29 (4.25); SB – 18.2 (8.74); CSB – 16.13 (7.14); APL – 6.04 (3.35). The predominant failure mode was cohesive (primarily of the bonding agent). On enamel SBS was statistically similar for all four adhesives. On dentin SBS of APL was lower than the other tested adhesives.

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A Comparison of an Acid Primer (Clearfil Liner Bond 2V) with Other Conventional Etchants on the Shear Bond Strength and the Bracket-Adhesive Failure Mode: An ex vivo Study

The Journal of Indian Orthodontic Society ◽

10.1177/0974909820130710s ◽

2013 ◽

Vol 47 (4_suppl3) ◽

pp. 405-410

Author(s):

Ashish Garg ◽

Kenneth FH Tan ◽

Rabindra S Nayak ◽

KA Mohan

Keyword(s):

Bond Strength ◽

Failure Mode ◽

Shear Bond Strength ◽

Ex Vivo ◽

Adhesive Failure ◽

Ex Vivo Study

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Shear Bond Strength of Different Repair Systems to Titanium After Water Aging

Operative Dentistry ◽

10.2341/11-231-l ◽

2012 ◽

Vol 37 (3) ◽

pp. 253-262 ◽

Cited By ~ 2

Author(s):

IG Haneda ◽

RG Fonseca ◽

FO Abi-Rached ◽

GL Adabo ◽

CAS Cruz

Keyword(s):

Bond Strength ◽

Failure Mode ◽

Shear Bond Strength ◽

Storage Time ◽

Pure Titanium ◽

Control Group ◽

Repair System ◽

Repair Systems ◽

Cp Ti ◽

Storage Times

SUMMARY This study evaluated the shear bond strength (SBS) and stability of commercially pure titanium (CP Ti)/repair material interfaces promoted by different repair systems. One hundred CP Ti cast discs were divided into five repair system groups: 1) Epricord (EP); 2) Bistite II DC (BT); 3) Cojet (CJ); 4) Scotchbond Multi-Purpose Plus (SB) (control group); and 5) Cojet Sand plus Scotchbond Multi-Purpose Plus (CJSB). The specimens were stored in distilled water for 24 hours at 37°C, thermal cycled (5000 cycles, 5°-55°C) and stored under the same conditions for either 24 hours or six months (n=10). SBS was tested and the data were analyzed by two-way analysis of variance (ANOVA) and Tukey test (α=.05). Failure mode was determined with a stereomicroscope (20×). The repair system, storage time, and their interaction significantly affected the SBS (p<0.001). At 24 hours, CJSB exhibited the highest SBS value, followed by CJ. At six months, these two groups had similar mean SBS (p>0.05) and higher means in comparison to the other groups. For both storage times, BT presented the lowest SBS, while the EP and SB groups did not differ significantly from one another (p>0.05). There were no significant differences in SBS between the storage times for the groups EP and CJ (p>0.05). The groups BT, SB, and CJSB showed 100% adhesive failure, irrespective of storage time. The CJSB group showed the highest SBS at both storage times. At six months, the CJ group exhibited a similar SBS mean value when compared to the CJSB group. Water storage adversely affected the groups BT, SB (control group), and CJSB. Considering SBS values, stability, and the failure mode simultaneously, the CJ group showed the best CP Ti repair performance.

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A comparative study of the shear bond strength and failure mode between zirconia copings and veneering ceramics

Journal of Korean Acedemy of Dental Technology ◽

10.14347/kadt.2015.37.4.243 ◽

2015 ◽

Vol 37 (4) ◽

pp. 243-250

Author(s):

Won-Young Kim ◽

Byung-Wook Jeon ◽

In-Sung Chung

Keyword(s):

Bond Strength ◽

Comparative Study ◽

Failure Mode ◽

Shear Bond Strength

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Effect of dentin pretreatment on shear bond strength of three resin-based luting cements

European Oral Research ◽

10.26650/eor.2018.449 ◽

2019 ◽

pp. 82-88

Author(s):

Nihal Berke Bulut ◽

◽

Gulumser Evlioglu ◽

Bilge Gokcen Rohlig ◽

Tamer Celakil ◽

...

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Luting Cements

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Study On The Effect of Bond Strength On The Failure Mode of Coarse-Grained Sandstone In Weakly Cemented Stratum

10.21203/rs.3.rs-818844/v1 ◽

2021 ◽

Author(s):

Xianda Yang ◽

Lihui Sun ◽

Jiale Song ◽

Bensheng Yang ◽

Chengren Lan

Keyword(s):

Bond Strength ◽

Failure Mode ◽

Shear Bond Strength ◽

Shear Failure ◽

Shear Crack ◽

Peak Strength ◽

Tensile Bond Strength ◽

Coarse Grained ◽

Strength Ratio ◽

Tensile Shear

Abstract Bond strength is one of the most important parameters and can affect the macroscopic mechanical properties and the damage state of the rock to some degree. The coarse-grained sandstone with strength of less than 40 MPa was studied by the controlled variable method. The influence of parallel bond strength on the peak strength and failure mode of coarse-grained sandstone was simulated, the evolution law of peak strength and failure mode of bond strength were comprehensively analyzed. The results show that the peak strength of rock was positively correlated with the bond strength, the difference value between tensile and shear crack was negatively correlated with tensile bond strength and positively correlated with shear bond strength. Tensile-shear bond strength ratio less than 0.5, the peak strength of the rock was usually stable at the certain extreme value under a constant tensile bond strength. Tensile crack was negatively correlated with the tensile-shear bond strength ratio, shear crack was positively correlated with the tensile-shear bond strength ratio. The failure mode of coarse-grained sandstone is shear failure. The research results can be used to guide the ground control of other mine stopes or roadways with weak cementation lithology.

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