DSpace Collection:
https://ir.swu.ac.th/jspui/handle/123456789/11188
2024-03-29T05:34:27Z
2024-03-29T05:34:27Z
Penetration ability of various elastomeric impression materials using a gingival sulcus model
Suwanwalaikorn P.
Ekworapoj P.
Aimjirakul N.
https://ir.swu.ac.th/jspui/handle/123456789/17600
2022-08-04T03:49:25Z
2021-01-01T00:00:00Z
Title: Penetration ability of various elastomeric impression materials using a gingival sulcus model
Authors: Suwanwalaikorn P.; Ekworapoj P.; Aimjirakul N.
Abstract: This study aims to compare the penetration ability of elastomer impression materials in a three-dimensional gingival sulcus model. Four types of elastomer (polyether, polysulfide, addition curing silicone and vinylpolyethersilox-ane) were tested using models with three sulcular widths (0.2 mm, 0.1 mm and 0.05 mm). Six impressions were taken for each width with one material type. They were measured by stereomicroscope (Olympus SZ61) and interpreted by image analysis software (Image-Pro Plus). A two-way ANOVA and Dunnette T3 test were performed with the level of significance (P-value) set at P< 0.05. The results of this study showed no statistically significant differences among four elastomers for a 0.2 mm and 0.1 mm gingival sulcus. For a 0.05 mm sulcus width, polysulfide demonstrated the best penetration ability and flowability into the sulcus. This was statistically higher than additional curing silicone and vi-nylpolyethersiloxane. In conclusion, our three-dimensional gingival model revealed the penetration characteristics of elastomeric impression materials. In clinical application, using polyether and polysulfide materials for narrow sulcus width may yield good clinical results for restoration. © 2018-2021, Rangsit University.
2021-01-01T00:00:00Z
A comparison of efficacy and quality of life between transoral endoscopic thyroidectomy vestibular approach (TOETVA) and endoscopic thyroidectomy axillo-breast approach (ETABA) in thyroid surgery: non-randomized clinical trial
Wongwattana P.
Laoveerakul P.
Santeerapharp A.
https://ir.swu.ac.th/jspui/handle/123456789/17596
2022-08-04T03:59:59Z
2021-01-01T00:00:00Z
Title: A comparison of efficacy and quality of life between transoral endoscopic thyroidectomy vestibular approach (TOETVA) and endoscopic thyroidectomy axillo-breast approach (ETABA) in thyroid surgery: non-randomized clinical trial
Authors: Wongwattana P.; Laoveerakul P.; Santeerapharp A.
Abstract: Purpose: Recently, there are many new surgical methods of endoscopic thyroidectomy, which have advantages in cosmetic results while do not increase the complication rates. This study was conducted to evaluate and compare both intra- and post-operative results and quality of life between TOETVA and endoscopic thyroidectomy axillo-breast approach (ETABA). Materials and methods: A non-randomized, patient preference clinical trial was performed in Otorhinolaryngology, Head and Neck surgery department, HRH Princess Maha Chakri Sirindhorn Medical center. Patients who decided to go for endoscopic thyroidectomy were allocated into two groups. Demographics data, operative time, intra-operative blood loss, post-operative pain score, length of hospital stay, complications were collected. Overall satisfaction was evaluated by visual analogue scale and quality of life was evaluated by SF-36 questionnaires. Results: 22 patients were totally included and equally allocated in 2 groups (11 patients per group). All of the operations were lobectomy. There was no significant difference in demographic data. The results showed that pain score at 3 days post-operation and average pain score were significantly higher in TOETVA group. Average pain score was 3.67 ± 1.11 in ETABA group and 5.15 ± 1.35 in TOETVA (p = 0.011); however, the operative time, intra-operative blood loss, length of hospital stay, complications and overall satisfaction were not significantly different. Different change in the quality of life was not detected in both groups. Conclusion: Transoral endoscopic thyroidectomy vestibular approach and ETABA both have comparable results and do not worsen the quality of life. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.
2021-01-01T00:00:00Z
A new second intermediate host and phylogenetic relationships based on the ITS2 sequence of Isoparorchis sp. (Digenea: Isoparorchiidae) in Thailand
Jaruboonyakorn P.
Chontananarth T.
https://ir.swu.ac.th/jspui/handle/123456789/17597
2022-08-04T03:55:40Z
2021-01-01T00:00:00Z
Title: A new second intermediate host and phylogenetic relationships based on the ITS2 sequence of Isoparorchis sp. (Digenea: Isoparorchiidae) in Thailand
Authors: Jaruboonyakorn P.; Chontananarth T.
Abstract: The genus Isoparorchis (Family: Isoparorchiidae) contains trematodes infecting the air bladder of freshwater catfishes in Asia and Australia. Isoparorchis spp. rely on freshwater shrimps and fishes as intermediate hosts. There is limited information about parasitic infections in freshwater shrimp in Thailand, and Isoparorchis infection in an intermediate host in this country has never been reported. Thus, this study reports infections in freshwater shrimp (Macrobrachium lanchesteri and Caridina sp.), including overall prevalence, mean intensity, morphological characters and molecular analyses. The parasite specimens were analysed by studying their morphological characters, together with a molecular approach based on internal transcribed spacer 2 (ITS2) sequence data. The overall prevalence and mean intensity of Isoparorchis infections were 92% and 1.89, respectively. The metacercariae were identified as Isoparorchis sp. based on their morphological characters and supported by the comparison with published ITS2 sequences of Isoparorchis species. The phylogenetic studies based on the ITS2 region demonstrated that all of the Isoparorchis sp. specimens in this study are distinct from Isoparorchis species in previous reports. Moreover, we show for the first time that the freshwater shrimp M. lanchesteri serves as a second intermediate host of Isoparorchis sp. and we provide a morphological description and molecular characterization of Isoparorchis sp. metacercariae based on ITS2 sequence data to clarify the status of Isoparorchis sp. in Thailand. © The Author(s), 2021. Published by Cambridge University Press.
2021-01-01T00:00:00Z
Poly(ester-co-glycidyl methacrylate) for digital light processing in biomedical applications
Risangud N.
Jiraborvornpongsa N.
Pasee S.
Kaewkong P.
Kunkit N.
Sungkhaphan P.
Janvikul W.
https://ir.swu.ac.th/jspui/handle/123456789/17599
2022-08-04T04:08:53Z
2021-01-01T00:00:00Z
Title: Poly(ester-co-glycidyl methacrylate) for digital light processing in biomedical applications
Authors: Risangud N.; Jiraborvornpongsa N.; Pasee S.; Kaewkong P.; Kunkit N.; Sungkhaphan P.; Janvikul W.
Abstract: Methacrylate-containing polyesters exploited for digital light processing (DLP) are generally prepared through ring-opening polymerization followed by photoactivation via methacrylation, which commonly requires the additional chemical and reaction workup. Herein, such a drawback is overcome by introducing a facile method of sequential addition of ester monomer and glycidyl methacrylate into the reaction. Two different hydroxyl beginning monomers, that is, ethylene glycol and glycerol, were utilized. The chemical structures and molecular weights of the resultant copolymers were analyzed using 1H-NMR and ATR-FTIR spectroscopy and size exclusion chromatography, respectively. The effects of the copolymer structures on the properties of both resins formulated with and without hydroxyapatite, for example, rheological behavior and printability, and DLP-printed specimens, for example, mechanical property and cytotoxicity, were assessed. By controlling the beginning monomer to monomer feeding ratio from 1:6 to 1:14, the Mn values of the resultant copolymers fell in the range of 1.7 to 2.5 kDa. The DLP-printed specimens possessed compressive moduli in the range of 10.20 ± 0.16 MPa and 18.65 ± 0.75 MPa. The cytotoxicity result suggested that the DLP-printed specimens were noncytotoxic to porcine chondrocytes. Altogether, these methacrylate-containing polyesters simply synthesized via a concise one-pot reaction revealed great potential for DLP printing resins in biomedical applications. © 2021 Wiley Periodicals LLC.
2021-01-01T00:00:00Z