European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
March 2015
Print ISSN:
0965-7452
Vol:
23
Issue:
1

The Influence of Sonic and Ultrasonic Vibration on the Shear Bond Strength of a Selected Resin Luting Cement

doi: 10.1922/EJPRD_1370Marchan04

The Influence of Sonic and Ultrasonic Vibration on the Shear Bond Strength of a Selected Resin Luting Cement
Shivaughn M Marchan, Daniel White, William Smith, Virendra Dhuru

Keywords:
Panavia shear bond strengths sonic ultrasonic instruments

Abstract:
Purpose: This study determined the effect of sonic and ultrasonic instrumentation on the shear bond strengths of Panavia 21, a popular cement for the luting of resin-bonded restorations. Methods: 84 Ni-Cr cylinders were cemented to randomly selected resin composite substrates using Panavia 21 following the manufacturer’s instructions. The Ni-Cr-composite specimens were divided into 7 groups of 12 specimens each based upon the procedure used for removing the excess cement. For Group 1 (Co) specimens the excess cement was removed with microbrushes immediately after cementation. Groups 2 through 7 were based on the use of vibrating instrument and the time period after which the excess material was removed. These included the cement, Panavia 21, three vibrating instruments, Sonic with a universal tip (So), Piezoelectric ultrasonic with a USP1S tip (Pu), Magnetorestrive ultrasonic with a FS1-100 tip (Mu) and two different time periods, soon after cementation (9m) and one hour after cementation (1h). Once excess cement removal was completed, the specimens were subjected to shear testing. Results: Mean Shear Bond strengths ranged from 16.03 MPa (Co) to 19.91 MPa (So 1h). Statistical analysis demonstrated that interaction of the main effects were significant (F= 4.27, p=0.042). Post-hoc analysis demonstrated that the effect of timing was significant in all the instrumented groups. The majority of the tested specimens failed cohesively compared to mainly adhesive failures for the control group. Conclusions: The effect of type of instrumentation immediately following polymerization setting had no effect on the shear bond strengths however a delay of 1 hour for all types of instrumentation had a beneficial effect of improving observed shear bond strengths.

Article Price
£15.00
Institution Article Price
£
Page Start
29
Page End
32
Authors
Shivaughn M Marchan, Daniel White, William Smith, Virendra Dhuru

Articles from this issue

  • Title
  • Pg. Start
  • Pg. End

  1. Editorial
  2. 2
  3. 2

  1. Effect of Luting Cement Space on the Strain Response of Gold Crowns Under Static Compressive Loading
  2. 3
  3. 7

  1. Hardness Changes of Tissue Conditioners in Various Storage Media: An in Vitro Study
  2. 9
  3. 15

  1. An Investigation into the Accuracy of Two Currently Available Dental Impression Materials in the Construction of Cobalt-Chromium Frameworks for Removable Partial Dentures
  2. 16
  3. 28

  1. The Influence of Sonic and Ultrasonic Vibration on the Shear Bond Strength of a Selected Resin Luting Cement
  2. 29
  3. 32

  1. The Bond Strength of Resin Bonded Bridge Retainers to Abutments of Differing Proportions of Enamel and Composite
  2. 33
  3. 39

  1. The Windowed Removable Partial Denture: A Treatment Option for Patients with Lone-Standing Teeth
  2. 40
  3. 45

  1. Too Much To Swallow? A Case Report Of An Ingested Denture
  2. 46
  3. 48