European Journal of Prosthodontics and Restorative Dentistry

cover art

Cover Date:
December 2017
Print ISSN:
0965-7452
Electronic ISSN:
2396-8893
Vol:
25
Issue:
4

The Effect of Surface Preparation of Acrylic Teeth

Purpose: To investigate whether the chemical bond between acrylic teeth and heat polymerized PMMA can be altered by chemical and/or mechanical treatment. Materials and methods: One hundred fifty acrylic teeth were divided in groups of 10. Their ridge lap surface underwent mechanical and/or chemical treatments: 1) no treatment, 2) air-abrasion with Al2O3 particles, 3) acid etching with phosphoric acid, 4) application of composite resin bonding agent, 5) application of MMA and ethylmethylketone bonding agent, 6) PMMA monomer application. The teeth were then placed in heat polymerized
acrylic resin. Each specimen was compressed with a universal testing machine. Descriptive statistics, one-way ANOVA (α=0.05) and Tukey’s HSD test were used. A scanning electron microscope (SEM) was also used to study the fracture areas. Results: Statistically significant differences (p<0.001) in the bond strength were found. The strongest
bond (239.41 N), was noted in the group treated with sandblasting followed by PMMA monomer application. Conclusions: Mechanical and/or chemical preparations affect significantly the bond strength between the acrylic resin denture teeth and the PMMA denture base. Air abrasion was the most effective treatment, either alone or combined with other treatments.

Keywords
Compressive Strength
Surface Treatment
Acrylic Denture Base
Bonding Strength
Acrylic Resin
Denture Teeth


10.1922/EJPRD_01713Pispili10

Article Price
£15.00
Institution Article Price
£
Page Start
209
Page End
218
Authors
Dr. Maria Pispili, Prof. Argirios Pissiotis

Articles from this issue

  • Title
  • Pg. Start
  • Pg. End

  1. An Investigation into the Trueness and Precision of Copy Denture Templates Produced by Rapid Prototyping and Conventional Means
  2. 186
  3. 192

  1. A Measurement Protocol for the Marginal and Internal Fit of All-Ceramic Crowns
  2. 193
  3. 200

  1. The Effect of Core and Veneering Design on the Optical Properties of Polyether Ether Ketone
  2. 201
  3. 208

  1. The Effect of Surface Preparation of Acrylic Teeth
  2. 209
  3. 218

  1. A Randomised Controlled Trial of a Universal Bonding Agent at Three Years: Self Etch vs Total Etch
  2. 220
  3. 227

  1. Adhesion and Early Colonization of S. Mutans on Lithium Disilicate Reinforced Glass-Ceramics, Monolithic Zirconia and Dual Cure Resin Cement
  2. 228
  3. 234