THERMAL, STRUCTURAL AND MORPHOLOGICAL CHARACTERIZATION OF DENTAL POLYMERS FOR CLINICAL APPLICATIONS


Creative Commons License

Benli M., Gümüş B. , Kahraman Y. , Yağci Ö. , Ceylan Erdoğan D.

JOURNAL OF PROSTHODONTIC RESEARCH, cilt.65, ss.1-9, 2020 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 65 Konu: 2021
  • Basım Tarihi: 2020
  • Doi Numarası: 10.2186/jpr.jpor_2019_534
  • Dergi Adı: JOURNAL OF PROSTHODONTIC RESEARCH
  • Sayfa Sayıları: ss.1-9

Özet

Abstract

Purpose: Polymers are used in dentistry on a daily basis due to their mechanical, functional and aesthetic properties. However, such biomaterials are

subject to deterioration in the oral environment. Thus, this study aimed to evaluate the structural properties of five commonly used dental polymers to

determine their best clinical indications.

Methods: Four hundred-fifty samples of five dental polymers (polyethylenterephthalat - glycol modified (PG), polymethyl methacrylate (PA), ethylene

vinyl acetate(E), polycarbonate (PC), polyetheretherketone (PK) were prepared to investigate their thermal, structural and chemical characteristics

using energy dispersive spectroscopy (EDS), Fourier transform infrared analysis(FTIR), scanning electron microscopy (SEM), differential scanning

calorimetry(DSC), thermogravimetric analysis(TGA), X-ray diffraction(XRD), and Shore D hardness test. Data were analyzed using one-way

ANOVA, Tukey’s HSD, and Levene’s tests (α=0.05).

Results: PK (87.2) and PA (82.4) displayed the highest hardness values and smooth surfaces, as observed with SEM (p<0.001). Silica was detected in

PK, PA, and E by EDS and XRD. The highest glass transition temperature was recorded for PC (145.00±2.00°C) and PK (143.00±1.87°C), while the

lowest value was measured for E (50.00±2.12°C)(p<0.001).The highest mass loss was detected for PG (91.40±1.40%) by TGA.

Conclusions: PA and PK polymers can be used for stress-containing treatments due to their mechanical properties. These two materials are also

advantageous in terms of plaque accumulation as these polymers reveal smoother surfaces than other groups. Insufficient physical and thermal

properties require the use of E with caution and only in limited clinical indications.