Surface roughness of dentin after tooth preparation with different rotary instrumentation

Ayad, Mohamed F.; Rosenstiel, Stephen F.; Hassan, Moustafa M

doi:10.1016/s0022-3913(96)90087-6

Cited by 63 publications

(40 citation statements)

References 18 publications

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“…In order to enhance the bond strength of self-adhesive cements to dentin, different conditioning methods were suggested such as air abrasion, mechanical cleaning with pumice slurry, sodium hypochlorite irrigation, chlorhexidine digluconate (CHX), polyacrylic acid (PAA), and ethylene diamine tetra acetic acid (EDTA) [23][24][25][26][27][28][29][30][31][32]. Recently, the use of chitosan was suggested as a more biocompatible chelating agent to condition the smear layer on dentin [33].…”

Section: Introductionmentioning

confidence: 99%

Adhesive strength of self-adhesive resins to lithium disilicate ceramic and dentin: effect of dentin chelating agents

2014

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The aim of this study was to test the effect of different chelating agents on microtensile bond strength (MTBS) of self-adhesive resin cements to dentin. The occlusal surfaces of extracted human mandibular molars (N = 80) were cut horizontally to expose sound dentin. The teeth were randomly divided into four groups (n = 20 per group) and dentin surfaces were conditioned according to one of the following methods: group C: no treatment (control group); group CH: 0.2 % chitosan; group E: 17 % ethylene diamine tetra acetic acid (EDTA) and group P: 25 % polyacrylic acid (PAA). Lithium disilicate glass ceramic (e.max CAD) blocks were cemented to conditioned dentin surfaces with self-adhesive cements (RelyX Unicem or Clearfil SA) and photo-polymerized. Specimens were stored in distilled water at 37°C for 24 h and thermocycled for 6,000 times. The beams were obtained from bonded ceramic-cement-tooth assemblies and were subjected to the MTBS test (1 mm/min). Failure types were analyzed and selected beams were examined under scanning electron microscope. Data (MPa) were analyzed using two-way ANOVA and Tukey's test (P < 0.05). While cement type significantly affected the MTBS results (P < 0.05), no significant difference was observed between the dentin chelating agents (P = 0.785). Interaction terms were not significant (P = 0.114). Control group with no dentin conditioning presented significantly lower results with both cements (RelyX Unicem: 8.1 ± 1.9(a), Clearfil SA: 8 ± 1.6(a)) than those of conditioned groups (19.3 ± 4.2(b)-24.5 ± 5.2(b)) (P < 0.05). Failure types were predominantly adhesive in all groups. Chitosan (2 %), EDTA (17 %) or PAA (25 %) could all be used as dentin chelating agents in conjunction with self-adhesive resin cements tested. Abstract:The aim of this study was to test the effect of different chelating agents on microtensile bond strength (MTBS) of self-adhesive resin cements to dentin. The occlusal surfaces of extracted human mandibular molars (N=80) were cut horizontally to expose sound dentin. The teeth were randomly divided into 4 groups (n=20 per group) and dentin surfaces were conditioned according to one of the following methods: Group C: No treatment (Control group); Group CH: 0.2% chitosan; Group E: 17% ethylene diamine tetra acetic acid (EDTA) and Group P: 25% polyacrylic acid (PAA). Lithium disilicate glass ceramic (e.max CAD) blocks were cemented to conditioned dentin surfaces with self-adhesive cements (RelyX Unicem or Clearfil SA) and photo-polymerized.Specimens were stored in distilled water at 37 o C for 24 hours and thermocycled for 6000 times.The beams were obtained from bonded ceramic-cement-tooth assemblies and they were subjected to the MTBS test (1 mm/min). Failure types were analyzed and selected beams were examined under scanning electron microscope. Data (MPa) were analyzed using two-way ANOVA and Tukey's test (P<0.05). While cement type significantly affected the MTBS results (P<0.05), no significant difference was observed between the dentin chelating agents (...

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Section: Introductionmentioning

confidence: 99%

Adhesive strength of self-adhesive resins to lithium disilicate ceramic and dentin: effect of dentin chelating agents

2014

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“…1,2 The main objective of restorative procedures is to obtain an adaptation as close as possible between the restorative material and the tooth structure to avoid the presence of gaps and consequent microleakage. 3 Resin-based dental luting cements can infiltrate into the dentinal tubules and exposed collagen network to promote a micromechanical interlock.…”

Section: Introductionmentioning

confidence: 99%

Effect of Dentin-cleaning Techniques on the Shear Bond Strength of Self-adhesive Resin Luting Cement to Dentin

Santos¹,

Bapoo²,

Rizkalla³

et al. 2011

Operative Dentistry

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SUMMARY Objective This in vitro study evaluated the influence of different cleansing techniques on the bond strength of self-adhesive cement to dentin. Methods and Materials A total of 33 noncarious human molars were sectioned mesiodistally and embedded in chemically cured resin with the buccal or lingual surfaces facing upward. Superficial dentin was exposed and resin disk provisional restorations were cemented to the dentin surfaces with noneugenol provisional cement and were stored in distilled water at 37°C. After seven days, the provisional restorations were removed and 13 specimens were randomly assigned to each of the five groups (n=13), according to the following cleansing treatments: G1—excavator (control); G2—0.12% chlorhexidine digluconate; G3—40% polyacrylic acid; G4—mixture of flour pumice and water; and G5—sandblasting with 50 μm aluminum oxide particles at a pressure of 87 psi. Resin composite disks (Filtek Supreme Plus, 3M ESPE Dental Products, St Paul, MN, USA) 4.7 (±0.1) mm in diameter and 3.0 (±0.5) mm in height were cemented with self-adhesive cement (RelyX Unicem, 3M ESPE), photocured, and stored in distilled water at 37°C for 24 hours. Shear bond strength testing was conducted using a universal test machine at a crosshead speed of 0.5 mm/min until failure. Results Data were analyzed using analysis of variance (ANOVA) and the Tukey-B rank order test. Sandblasting with aluminum oxide (11.32 ± 1.70 MPa) produced significantly higher shear bond strength values compared with any other treatment groups (p<0.05). No significant differences were found between G1-control (7.74 ± 1.72 MPa), G2-chlorhexidine (6.37 ± 1.47 MPa), and G4-pumice (7.33 ± 2.85 MPa) (p<0.05).

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“…[1][2] During the fabrication of indirect restorations, provisional restorations are placed with temporary luting cement in order to avoid sensitivity, infection and tooth movement. The temporary luting cement is required to be removed from the dentin surface prior to definitive cementation.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Tooth Preparation Cleansing Protocols on the Bond Strength of Self-adhesive Resin Luting Cement to Contaminated Dentin

Chaiyabutr¹,

Kois²

2008

Operative Dentistry

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SUMMARYThis in vitro study evaluated the bond strength of a self-adhesive luting cement after using four different techniques to remove surface contamination on dentin. Extracted human molars were flattened to expose the dentin surface and prepared for full crown preparation. Acrylic temporary crowns were fabricated and placed using temporary cement. The specimens were stored at room temperature with 100% relative humidity for seven days. Following removal of the temporary crowns, the specimens were randomly divided into four groups, and excess provisional cement was removed with 1) a hand instrument (excavator), 2) prophy with a mixture of flour pumice and water 3) aluminous oxide abrasion with a particle size of 27 µm at 40 psi and 4) aluminous oxide abrasion with a particle size of 50 µm at 40 psi. The microstructure morphology of the tooth surface was evaluated and residual materials were detected using SEM and EDS analysis of randomly selected specimens. The ceramics were treated with 9.5% hydrofluoric acid-etch and silanized to the prepared dentin prior to cementing with self-adhesive resin cement (RelyX Unicem, 3M ESPE). The shear bond strength was determined at a crosshead speed of 0.5 mm/minute. The results were analyzed with one-way ANOVA, followed by Tukey's test. Particle abrasion treatment of dentin with an aluminous oxide particle provided the highest values of bond strength, while hand instrument excavation was the lowest (p<0.05). Aluminous oxide particle size did not significantly influence the bond strength at 40 psi. The use of low pres- Y Chaiyabutr • JC Kois Clinical RelevanceTooth preparation cleaning protocol surface management with lower pressure aluminous particle abrasion provides a significant improvement in bond strength to dentin.

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Surface roughness of dentin after tooth preparation with different rotary instrumentation

Cited by 63 publications

References 18 publications

Adhesive strength of self-adhesive resins to lithium disilicate ceramic and dentin: effect of dentin chelating agents

Adhesive strength of self-adhesive resins to lithium disilicate ceramic and dentin: effect of dentin chelating agents

Effect of Dentin-cleaning Techniques on the Shear Bond Strength of Self-adhesive Resin Luting Cement to Dentin

The Effects of Tooth Preparation Cleansing Protocols on the Bond Strength of Self-adhesive Resin Luting Cement to Contaminated Dentin

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