Effect of khat extract on color stability of digitally and manually fabricated provisional restorations: an in vitro comparative study

BMC Oral Health

Research

Abd Al-Rhaman M. Al-Akhali¹  Abdulwahab I. Al-Kholani¹  Ibrahim Z. Al-Shami¹  Mohsen Al-Hamzi²  Ahmed A. Madfa³ 

[1] Department of Conservative Dentistry and Fixed Prosthodontics, Faculty of Dentistry, Sana’a University, Sana’a, Yemen;Department of Conservative Dentistry and Fixed Prosthodontics, Faculty of Dentistry, Sana’a University, Sana’a, Yemen;Department of Conservative Dentistry, Faculty of Dentistry, Thamar University, Thamar, Yemen;Department of Conservative Dentistry and Fixed Prosthodontics, Faculty of Dentistry, Sana’a University, Sana’a, Yemen;Department of Restorative Dental Science, College of Dentistry, University of Ha’il, Ha’il, Kingdom of Saudi Arabia;Department of Conservative Dentistry, Faculty of Dentistry, Thamar University, Thamar, Yemen;

关键词: Poly-methyl methacrylate (PMMA);    Provisional Restoration (PR);    CAD/CAM PR;    3D Printing PR;    Khat extract;    Color stability;   

DOI  :  10.1186/s12903-023-03425-w

 received in 2023-02-04, accepted in 2023-09-18,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundThe aim of this in vitro study was to evaluate the effect of khat extract on the color stability of five different provisional restorative materials (PRMs).MethodsIn this study, 50 specimens were fabricated from five different PRMs with different techniques. Twenty specimens were digitally fabricated of poly-methyl methacrylate (PMMA) CAD/CAM milling and 3D printing PRMs, while the other thirty specimens were manually fabricated of three different PRMs: PMMA self-cured (SC) acrylic resin, light-cured (LC) composite, and Bis-acrylic SC composite. Milling and 3D printing machines were used to fabricate the digital specimens, while the manual specimens were fabricated using a metallic mold. The material was placed in the mold, covered by a polyester stripe, and held between two glass slabs with a constant load for 30 s. After setting, the specimens were removed and checked. Ten disc-shaped specimens with 2 ± 0.3 mm thickness and 10 ± 0.3 mm diameter were prepared from each of the tested PRM. Then all the specimens were polished. Five specimens of each PRM were immersed in khat extract, while the other five were immersed in distilled water medium as a control group. The color measurements were recorded before and after 1 and 7 days of immersion using a spectrophotometer. The immersion media were renewed every 24 h and kept along with the specimens at 37 °C. The T test, paired T test, and ANOVA analysis of variance were used to analyze the results. The Bonferroni test was used for post-hoc multiple comparisons.ResultsThe interaction between the tested PRMs, the media, and the duration of immersion time was statistically significant (p < 0.05). PMMA CAD/CAM milling PRM was the most stable in color, and this was statistically significant (p < 0.05). The LC composite PRM composite was the least stable in color and was statistically insignificant (p > 0.05) when compared to the 3D printing and Bis-acrylic SC composite PRMs, respectively.ConclusionsThis study demonstrated that khat extract medium has a high staining ability on the tested PRMs. CAD/CAM milling PRM was the most stable in color and could therefore be used as a long-term provisional. The increase in immersion time was a significant factor in the color change of the tested PRMs. The color of the 3D-printed PRM was the most affected over time.

【 授权许可】

CC BY   
© BioMed Central Ltd., part of Springer Nature 2023

【 图 表 】

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