Objective: Aim of this study was to evaluate possible effects of saliva and nasal secretion on some physical properties, such as sorption, solubility, surface hardness and colour change on four different resin-based materials over a certain time period.
Methods: A total of 128 disc-shaped specimens with a diameter of 50 mm and thickness of 0.5 mm were tested to evaluate sorption and solubility (ISO-1567). The specimens were stored in different solutions prior to testing. Surface hardness measurements were performed by using a Vickers hardness testing machine. A total of 20 cylinder-shaped test specimens with a diameter of 13 mm and thickness of 1 mm were prepared to evaluate colour change (ΔE). Analysis of variance was used to determine significant differences among groups. Paired t and Tukey Post-Hoc tests were performed to investigate significant differences among subgroups at all time intervals (p<0.05).
Results: It was found that while the percentage absorption value at T7 (7 days) of the A groups stored in artificial saliva+nasal secretion were the highest (0.057±0.119), the percentage absorption value at T15 (15 days) of the D groups stored in artificial nasal secretion were the lowest (0.013±0.09). Besides, it was found that the percentage solubility value at T30 (30 days) of VLC groups stored in artificial nasal secretion were the highest (0.016±0.003), and the percentage solubility value at T1(1 day) of the D groups stored in distilled water were the lowest (0.01±0.02). While the highest hardness value was of T0 (Dry) in group H (36.19±1.35), the lowest hardness value was of T0 in group D (9.83±2.48). When ΔE values analysed for each group, VLC group showed the highest values (23.78±5.05) (p<0.05), group D showed the lowest values (9.06±2.82) in time (between the T0 and T30).
Conclusion: The new polyamide resin was observed to show better physical properties when compared with other materials.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.4317/medoral.15.e969 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Aberrant DNA methylation of EDNRB, MGMT and TIMP3 gene promoters in saliva of head and neck carcinoma patients as a diagnostic tool.
Mol Biol Rep
January 2025
Department of Biochemistry, All India Institute of Medical Sciences, Jodhpur, Rajasthan, 342005, India.
Background: Differential DNA methylation in the promoter region of tumour suppressor genes leads to gene function silencing.
Materials And Methods: In this study, we aimed to evaluate the salivary promoter methylation of EDNRB, MGMT and TIMP3 genes in H&NC patients (n = 100), premalignant lesions patients (n = 25) and healthy controls (n = 50). Blood and saliva samples were collected from all three groups and 20 concomitant tumour tissues were collected from the H&NC patients.
tDDA: A Targeted Data-Dependent Acquisition Mode for Rapid Screening of Targets in Complex Matrices.
Anal Chem
January 2025
School of Medical Technology, Beijing Institute of Technology, Beijing 100081, China.
Miniaturized mass spectrometers offer significant potential for in situ analysis due to their high specificity and portability. In traditional data-dependent acquisition (DDA) mode, precursor ions for tandem analysis are selected based on the full-scan mass spectrum. However, in situ applications often require the direct analysis of complex samples without extensive sample pretreatment, making them susceptible to chemical noise that can result in false negatives.
View Article and Find Full Text PDFSalivary testosterone and cortisol responses to seven weeks of practical blood flow restriction training in collegiate American football players.
Front Physiol
January 2025
Jayhawk Athletic Performance Laboratory - Wu Tsai Human Performance Alliance, University of Kansas, Lawrence, KS, United States.
Purpose: The purpose of this study was to examine the effects of a 7-week supplemental BFR training intervention on both acute and chronic alterations in salivary testosterone (sTes) and cortisol (sCort) in collegiate American football players.
Methods: 58 males were divided into 4 groups: 3 completed an upper- and lower-body split resistance training routine (H, H/S, H/S/R; H = Heavy, S = Supplemental, R = BFR), with H/S/R performing end-of-session practical BFR training, and H/S serving as the volume-matched non-BFR group. The final group (M/S/R) completed modified resistance training programming with the same practical BFR protocol as H/S/R.
Age-related alteration of the involvement of CD36 for salivary secretion from the parotid gland in mice.
J Physiol Sci
January 2025
Division of Pharmacology, Meikai University School of Dentistry, 1-1 Keyakidai, 350-0283, Sakado, Saitama, Japan.
This in vivo mouse model study was conducted to investigate the temporal alteration of the function of CD36 in salivary secretion. CD36 was highly expressed in the parotid gland of BALB/c mice. No significant variations were shown in the CD36 levels in the 8-, 48-, and 72-week-old animals.
View Article and Find Full Text PDFClick chemistry-driven asymmetrically modified superhydrophobic/superhydrophilic gelatin sponge for improved dry socket prophylaxis.
Int J Biol Macromol
January 2025
Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Ji'nan 250012, China. Electronic address:
Dry socket, a common painful complication after tooth extraction, is typically caused by improper blood clot formation or its premature dislodgement, often exacerbated by bacterial infections. Traditional gelatin sponges, widely used as clinical fillers, provide favorable biocompatibility and hemostatic support but suffer from suboptimal hemostatic efficiency, lack of antimicrobial properties, and insufficient anticoagulant factors, which increase the risk of dry socket. Addressing these limitations, a novel tannic acid cross-linked gelatin sponge has been developed using directional lyophilization.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!