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The Effect of Surface Treatments on the Connection of Different Soft Primer Materials with the Prosthesis Base

THE EFFECT OF SURFACE TREATMENTS ON THE CONNECTION OF DIFFERENT SOFT PRIMER MATERIALS WITH THE PROSTHESIS BASE

Prof. Dr. Zeynep YEŞİL DUYMUŞ1, Dt. Selin TEKİN2

Prof. Dr., Atatürk University, Faculty of Dentistry, Department of Prosthodontics, Erzurum, zyesilz@hotmail.com Dt., Recep Tayyip Erdogan University, Faculty of Dentistry, Department of Prosthodontics, Rize

ABSTRACT

Purpose: Soft lining materials, due to their flexibility and soft structure, are used in full and partial dentures to prevent or reduce the negative effects of hard denture base materials on the supporting tissues. Soft lining materials have significant disadvantages that limit their clinical use, such as hardening over time, losing their flexibility, causing bacterial and fungal colonization, showing porosity, water absorption, discoloration, separation from the denture base and reducing the resistance of dentures to fracture. For this reason, the study was carried out to examine the effect of surface treatments on the bond strength of different soft lining materials to polymethyl methacrylate (PMMA) based denture base material. Materials and Methods: In the study, 40 samples of conventional hot acrylic resin were prepared using ASTM D 638-08 standard, 60 mm long, 15 mm thick and 2.5 mm thin. The samples were randomly numbered and divided into four groups (n=10). After different surface treatments (control, sandblasting, laser and monomer application) were applied to the samples divided in the middle, acrylic resin-based and silicone-based soft primer was applied to half of the samples, as recommended by the manufacturer. The bond strength of the samples was examined in the Universal test device. The obtained data were statistically evaluated with two-way analysis of variance and multiple comparison (Tukey) test. Results: As a result of the analysis of variance; It was determined that the effect of surface treatments and soft lining material type on bond strength was significant (p<0.05). Conclusion: It is seen that even the soft lining materials available in the market today, suitable for long-term use, cannot be permanently and adequately bonded to the denture base. Therefore, some surface treatments can be applied inside the denture to ensure that the soft lining materials adhere better to the denture base. Keywords: Prosthetic base material, soft lining material, bond strength.

SELİN TEKİN
TPID
Turkey

 


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