{"title":"Dimensional changes over time in stereolithographic models fabricated with a 3D printer.","authors":"Shohei Suzuki, Rina Suzuki, Munetsugu Seto, Kazuhiko Hiroyasu, Shin Ogura, Kazuhiko Ueda","doi":"10.1007/s10266-024-00972-8","DOIUrl":"10.1007/s10266-024-00972-8","url":null,"abstract":"<p><p>This study aimed to ascertain the effects of the shape of stereolithographic models fabricated with a three-dimensional (3D) printer and the use of different types of liquid resin on the dimensional changes of these models over time, to obtain valuable information for determining the period for which such models can be used following fabrication. Stereolithography models with the shape of a large truncated cone or a small truncated cone were fabricated using liquid resin as surgical guides (Group G) or master casts (Group M). (four groups in total, each n = 11). The shapes of all experimental specimens were measured immediately after fabrication and 1 day, 1 week, 2 weeks, 3 weeks, 4 weeks, 2 months, 3 months, 6 months, 1 year, and 1.5 years later. The shape data collected immediately after fabrication were taken as baseline data, and the dimensional changes over time at each timepoint were calculated. No significant change from 1 day to 1 year after fabrication was observed in any of the groups, but the change after 1.5 years was significantly larger than the changes at the other timepoints (p < 0.001). Significantly larger changes were evident in Group M than in Group G at all timepoints (p < 0.001). These results suggested that, from the viewpoint of dimensional stability over time, stereolithographic models should be used within 1 year of fabrication, and that the type of liquid resin used for stereolithographic model fabrication may affect how its dimensions change over time.</p>","PeriodicalId":19390,"journal":{"name":"Odontology","volume":" ","pages":"274-282"},"PeriodicalIF":1.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141788758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
OdontologyPub Date : 2025-01-01Epub Date: 2024-06-29DOI: 10.1007/s10266-024-00974-6
Cristiane Cantiga-Silva, Pedro Henrique Chaves de Oliveira, Flávio Duarte Faria, Mariana Pagliusi Justo, Gustavo Sivieri-Araújo, Edilson Ervolino, Tiago Novaes Pinheiro, Juan José Segura-Egea, Luciano Tavares Angelo Cintra
{"title":"Increase Toll-like receptors 2 and 4 in apical periodontitis of rats with chronic liver disease.","authors":"Cristiane Cantiga-Silva, Pedro Henrique Chaves de Oliveira, Flávio Duarte Faria, Mariana Pagliusi Justo, Gustavo Sivieri-Araújo, Edilson Ervolino, Tiago Novaes Pinheiro, Juan José Segura-Egea, Luciano Tavares Angelo Cintra","doi":"10.1007/s10266-024-00974-6","DOIUrl":"10.1007/s10266-024-00974-6","url":null,"abstract":"<p><p>The aim of this study was to evaluate the influence of liver fibrosis (LF) on the expression of Toll-like receptors (TLR) 2 and 4 in apical periodontitis (AP) in Wistar rats. Forty Wistar rats were allocated in the following groups (n = 10): C-control; AP-apical periodontitis; LF-liver fibrosis; AP + LF-rats with AP and LF. LF and AP were induced by established methodologies. Histological, bacteriological, and immunohistochemical analyses were performed according to pre-established scores. For comparisons between AP and AP + LF groups, the Mann-Whitney test was used (P < .05). The livers of the LF and AP + LF groups showed generalized portal inflammatory infiltrate and collagen fibers confirming the presence of LF. Histopathological analysis in the maxilla of the AP + LF group showed areas of necrosis comprising the entire dental pulp and periapical tissue surrounded by a more intense inflammatory infiltrate than observed in the AP group (P = 0.032). A significant number of specimens in the AP + LF group showed microorganisms beyond the apical foramen adhered to the extraradicular biofilm, demonstrating greater invasion compared to the AP group (P = .008). Immunohistochemical analysis showed a large number of cells immunoreactive for TLR2 and TLR4 in the AP + LF group, compared to the AP group (P < 0.05). Liver fibrosis favors the inflammation and contamination of microorganisms in apical periodontitis and triggers the expression of TLR2 and TLR4, modulating innate immunity response in periapical lesions.</p>","PeriodicalId":19390,"journal":{"name":"Odontology","volume":" ","pages":"296-304"},"PeriodicalIF":1.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141477075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
OdontologyPub Date : 2025-01-01Epub Date: 2024-06-27DOI: 10.1007/s10266-024-00965-7
Ashraf Mohammed Alhumaidi, Mubashir Baig Mirza, Mohmed Isaqali Karobari, Mohammed Ali Abuelqomsan, Qamar Hashem, Mona Tariq Aldaijy, Nasser Yahya Albarr, Reem Tariq Aldaijy, Mohammed Al Moaleem
{"title":"Classifying the internal anatomy of anterior teeth in the Yemeni population using two systems: a retrospective CBCT study.","authors":"Ashraf Mohammed Alhumaidi, Mubashir Baig Mirza, Mohmed Isaqali Karobari, Mohammed Ali Abuelqomsan, Qamar Hashem, Mona Tariq Aldaijy, Nasser Yahya Albarr, Reem Tariq Aldaijy, Mohammed Al Moaleem","doi":"10.1007/s10266-024-00965-7","DOIUrl":"10.1007/s10266-024-00965-7","url":null,"abstract":"<p><p>A precursor for effective root canal treatment (RCT) is a complete understanding of the internal anatomy of teeth. In this study, the authors aimed to classify the root canal morphology of anterior teeth in the Yemeni population and identify gender-based variations among them. In addition, the symmetry among adjacent quadrants was also evaluated. Cone beam computed tomography (CBCT) scans of 2935 anterior teeth, 1502 maxillary, and 1433 mandibular were analyzed for root canal morphology and symmetry. Comparison between groups and among different genders was done using the Chi-square test. All the maxillary teeth were single-rooted and had a predominantly <sup>1</sup>TN<sup>1</sup> (Vertucci Type I) canal morphology. In addition to <sup>1</sup>TN<sup>1</sup>, the presence of <sup>1</sup>TN<sup>1-2-1</sup> (Vertucci type III) and <sup>1</sup>TN<sup>1-2-1-2-1</sup> (not classified NC according to Vertucci) morphologies were noticed in the maxillary canines. Among the mandibular anteriors, the canal morphologies identified include <sup>1</sup>TN<sup>1</sup> in majority of the scans followed by <sup>1</sup>TN<sup>2-1</sup> (Vertucci II), <sup>1</sup>TN<sup>1-2-1</sup>, <sup>1</sup>TN<sup>1-2</sup> (Vertucci V), <sup>1</sup>TN<sup>1-2-1-2</sup> (Vertucci VII) was seen only in incisors and newer canal types like <sup>1</sup>TN<sup>2-1-2-1</sup> (NC Vertucci) and <sup>1</sup>TN<sup>1-2-1-2-1</sup> (NC Vertucci) was seen in canines and lateral incisors. Two roots were only seen in the mandibular canines and classified as <sup>2</sup>TN<sup>1-2</sup> (NC Vertucci). Variations in root and root canal morphologies were seen among both genders. However, the results were not significant. All the maxillary teeth except 0.8% were bilaterally symmetrical. In mandible, symmetry ranged between 84.5 and 86.5%. In conclusion, single-rooted teeth with <sup>1</sup>TN<sup>1</sup> classification are most commonly seen in all the anterior teeth. Gender-based differences were non-significant, and bilateral symmetry was high. Ahmed et al. classification could precisely represent the root canal morphology in two rooted teeth.</p>","PeriodicalId":19390,"journal":{"name":"Odontology","volume":" ","pages":"416-431"},"PeriodicalIF":1.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141458381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of experimental in-office bleaching gels incorporated with co-doped titanium dioxide nanoparticles on dental enamel physical properties.","authors":"Matheus Kury, Fernando Luís Esteban Florez, Cínthia Pereira Machado Tabchoury, Vanessa Cavalli","doi":"10.1007/s10266-024-00976-4","DOIUrl":"10.1007/s10266-024-00976-4","url":null,"abstract":"<p><p>To evaluate the physical properties of enamel submitted to hydrogen peroxide (HP) incorporated with titanium dioxide nanoparticles (NP) co-doped with nitrogen and fluorine and irradiated with violet LED light (LT). Enamel-dentin disks were randomly allocated (T<sub>0</sub>) into groups, according to HP (HP6, HP15, or HP35) and NP (no NP, 5NP, or 10NP) concentrations, and irradiated or not with LT. A negative control (NC) group was set. After three bleaching sessions (T<sub>1</sub>, T<sub>2</sub>, and T<sub>3</sub>), specimens were stored in saliva for 14 days (T<sub>4</sub>). Enamel surface microhardness number (KHN), surface roughness (Ra), cross-sectional microhardness (ΔS), energy-dispersive spectroscopy (EDS), scanning electron (SEM), and polarized light (PLM) microscopies were performed. Surface KHN was significantly influenced by NP over time, independently of LT irradiation. At T<sub>3</sub> and T<sub>4</sub>, gels with 5NP and 10NP exhibited no KHN differences compared to NC and baseline values, which were not observed under the absence of NP. NP incorporation did not statistically interfere with the ΔS and Ra. PLM images exhibited surface/subsurface darkening areas suggestive of demineralizing regions. SEM demonstrated some intraprismatic affection in the groups without NP. EDS reported a higher enamel calcium to phosphorus ratio following 10NP gels applications. Gels with NP maintained the enamel surface microhardness levels and seemed to control surface morphology, upholding the mineral content. None of the proposed experimental protocols have negatively influenced the enamel surface roughness and the cross-sectional microhardness.</p>","PeriodicalId":19390,"journal":{"name":"Odontology","volume":" ","pages":"318-330"},"PeriodicalIF":1.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141498617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
OdontologyPub Date : 2025-01-01Epub Date: 2024-07-12DOI: 10.1007/s10266-024-00979-1
Yanqing Hong, Linlin Xu, Xijiao Yu, Yanyan He, Yanmei Du
{"title":"DLK1 regulates periodontal inflammation by inhibiting NF-κB p65 and JNK signaling pathways.","authors":"Yanqing Hong, Linlin Xu, Xijiao Yu, Yanyan He, Yanmei Du","doi":"10.1007/s10266-024-00979-1","DOIUrl":"10.1007/s10266-024-00979-1","url":null,"abstract":"<p><p>The roles and molecular mechanisms of Delta-like 1 (DLK1) in periodontitis remain largely unknown. Here, we investigated the expression of DLK1 and NF-κB p65 in Porphyromonas gingivalis (Pg.)-induced periodontitis in vivo. Periodontal inflammation and alveolar bone resorption were analyzed using western blotting, micro-computed tomography, TRAP staining, immunohistochemistry, and immunofluorescence. Raw246.7 cells were stimulated with 1 μg/ml Porphyromonas gingivalis lipopolysaccharide (Pg.LPS) to assess DLK1 expression in vitro. DLK1 overexpression was achieved, and transfection efficiency was confirmed using western blotting and immunofluorescence. The NF-κB and MAPK pathways were activated by treating cells with 1 μg/ml Pg.LPS to explore related mechanisms. Compared with normal tissues, both DLK1 and NF-κB p65 expression increased in periodontitis gingival tissues. DLK1-positive expression was observed in inflammatory infiltrating cells and osteoclasts in the marginal lacunae of the alveolar bone. DLK1 expression in CD68-positive macrophages was detected by immunofluorescence. However, DLK1 expression in Raw246.7 cells decreased after Pg.LPS stimulation and during osteoclast differentiation. DLK1 levels negatively correlated with TNF-α, IL-1β, and NFATC1. Increased DLK1 in Raw246.7 cells further inhibited COX2 and iNOS expressions. Mechanistically, DLK1 overexpression down-regulated NF-κB p65 and JNK levels. In summary, these findings suggest that DLK1 overexpression inhibits periodontal inflammation through the NF-κB p65 and JNK pathways. Interventions targeting increased DLK1 levels may have therapeutic implications for periodontitis.</p>","PeriodicalId":19390,"journal":{"name":"Odontology","volume":" ","pages":"349-357"},"PeriodicalIF":1.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141590874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
OdontologyPub Date : 2025-01-01Epub Date: 2024-07-06DOI: 10.1007/s10266-024-00968-4
Concepción López-Leyva, Silvia Jiménez-Brobeil, Antonio Magán-Fernández, Cristina Benavides-Reyes, Manuel Bravo, Francisco Mesa
{"title":"Mandibular bone mass density in a medieval population and its relationship with stable isotopes δ13C and δ15N.","authors":"Concepción López-Leyva, Silvia Jiménez-Brobeil, Antonio Magán-Fernández, Cristina Benavides-Reyes, Manuel Bravo, Francisco Mesa","doi":"10.1007/s10266-024-00968-4","DOIUrl":"10.1007/s10266-024-00968-4","url":null,"abstract":"<p><p>The aim of this study was to compare the level of bone mass in digital orthopantomograms in two populations (medieval and current) using two radiomorphometric indexes, and to correlate the mandibular bone mass value, in the medieval mandible population, with stable isotope data δ13C and δ15N. An observational, cross-sectional, and analytical study on mandibles from two diachronic groups, 15 mandibles from the medieval settlement of La Torrecilla (Granada, Spain) and 15 mandibles from current patients at the Faculty of Dentistry of the University of Granada (Spain), matched by age and sex was conducted. The bone mass density was determined using the Mandibular Cortical Width Index (MCW) and the Mandibular Panoramic Index (PMI) in digital panoramic radiographs. In the medieval group, the values of bone mass density were correlated with those of two stable isotopes (δ13C and δ15N). The mean value of MCW in mm in the medieval group was 3.96 ± 0.60 (mean ± standard deviation) and in the current group was 4.02 ± 1.01. The PMI was 0.33 ± 0.06 and 0.35 ± 0.08 in the medieval and current groups respectively, with similar results in both groups (p = 0.820 and p = 0.575). A negative correlation was found between both morphometric indices and the δ15N isotope (rs = 0.56, p = 0.030 and rs = 0.61, p = 0.016, respectively). The bone mass density in mandibles belonging to the two compared populations, determined by two quantitative radiomorphometric indices, is similar. Within the medieval population, there is an inverse correlation between the δ15N value and bone mass density.</p>","PeriodicalId":19390,"journal":{"name":"Odontology","volume":" ","pages":"432-437"},"PeriodicalIF":1.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11717879/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141545119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
OdontologyPub Date : 2025-01-01Epub Date: 2024-07-03DOI: 10.1007/s10266-024-00973-7
Irmak Bektas, Afife Binnaz Hazar Yoruc, Leyla Cinel, Meltem Ekinci, Seher Eda Horoz, Deniz Mukaddes Turet, Ali Mentes
{"title":"Histological evaluation of different concentrations of hyaluronic-acid-added zinc oxide eugenol on rat molar pulp.","authors":"Irmak Bektas, Afife Binnaz Hazar Yoruc, Leyla Cinel, Meltem Ekinci, Seher Eda Horoz, Deniz Mukaddes Turet, Ali Mentes","doi":"10.1007/s10266-024-00973-7","DOIUrl":"10.1007/s10266-024-00973-7","url":null,"abstract":"<p><p>Hyaluronic acid (HA), known for diverse properties, was investigated for its potential in dental pulp therapy. This study investigated the potential of HA in dental pulp therapy by examining the physical properties and effects of zinc oxide eugenol (ZOE) pulpotomy materials containing varying HA concentrations on rat molar teeth. In vitro tests assessed compressive strength and hardness of ZOE materials blended with HA (0.5%, 1%, 3%) and HA gels (0.54%, 0.8%). 120 samples, encompassing the control group, underwent compressive strength testing, while 60 samples were designated for hardness assessment. In vivo experiments on rat molars studied histological effects of HA-containing ZOE on dental pulp over 1 week and 1 month. Gels with HA concentrations of 0.5%, 1%, and 0.54% were used in pulpotomy on 22 rats. Each rat underwent the procedure on four teeth, with one tooth serving as a control, totaling 88 teeth subjected to the intervention. In the analyses, SPSS 22.0 was used and the significance level was set at P = 0.05. Findings showed that HA at 0.5% maintained compressive strength, but higher concentrations decreased mechanical properties significantly (P = 0.001). Histological assessments indicated better outcomes with lower HA concentrations in terms of odontoblast layer continuity (P = 0.005 at 1 month) and pulp vitality (P = 0.001 at 1 week and P = 0.018 at 1 month). The study suggests HA holds promise for pulpotomy and regenerative endodontic treatments, but further research is needed to understand long-term clinical implications.</p>","PeriodicalId":19390,"journal":{"name":"Odontology","volume":" ","pages":"283-295"},"PeriodicalIF":1.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11717850/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141492883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
OdontologyPub Date : 2025-01-01Epub Date: 2024-05-19DOI: 10.1007/s10266-024-00951-z
Chaoran Liu, Yang Li, Yanan Li, Ze Li, Guanghong Han
{"title":"Synergistic antibacterial effect of ginsenoside Rh2 and calcium hydroxide on Enterococcus faecalis.","authors":"Chaoran Liu, Yang Li, Yanan Li, Ze Li, Guanghong Han","doi":"10.1007/s10266-024-00951-z","DOIUrl":"10.1007/s10266-024-00951-z","url":null,"abstract":"<p><p>Treatment of root canal infections becomes more challenging due to the extremely high tolerance of Enterococcus faecalis (E. faecalis) to calcium hydroxide (Ca(OH)<sub>2</sub>). Ginsenoside is a Chinese herbal extract that has been proven to have antimicrobial properties and synergistic activities. And this study evaluated the antibacterial activity of ginsenoside Rh2 in combination with Ca(OH)<sub>2</sub> against E. faecalis and its preliminary mechanism of action. Broth microdilution method, checkerboard dilution method, time-inhibition curve, drug resistance assays, scanning electron microscopy, and biofilm inhibition and removal assays indicated that Rh2 in combination with Ca(OH)<sub>2</sub> exhibited potent antibacterial activity against E. faecalis. Rh2 exerted significant in vitro antibacterial activity against E. faecalis, with a minimum inhibitory concentration (MIC) of 3.125 μg/mL and minimum bactericidal concentration (MBC) of 6.25 μg/mL, and significantly enhanced the susceptibility of E. faecalis to Ca(OH)<sub>2</sub> (FICI = 0.5). Furthermore, cell membrane permeability assays, surface hydrophobicity assays, ATPase activity assays, and intra-biofilm extracellular polysaccharides (EPS) assays revealed that Rh2 and Ca(OH)<sub>2</sub> synergistically inhibit bacteria mainly by increasing membrane permeability. Ultimately, cytotoxicity assays showed that Rh2 exhibited only low toxicity, the half maximal inhibitory concentration (IC50) of Rh2 was 19.75 μg/mL. This study confirmed the synergistic antibacterial activities of Rh2 and Ca(OH)<sub>2</sub> against E. faecalis. Our findings indicate that the Rh2 and Ca(OH)<sub>2</sub> combination may be a promising alternative approach to treating root canal infections.</p>","PeriodicalId":19390,"journal":{"name":"Odontology","volume":" ","pages":"111-125"},"PeriodicalIF":1.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140958664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
OdontologyPub Date : 2025-01-01Epub Date: 2024-05-21DOI: 10.1007/s10266-024-00945-x
Mai M Eldokmak, Marwa M Essawy, Sally Abdelkader, Salma Abolgheit
{"title":"Bioinspired poly-dopamine/nano-hydroxyapatite: an upgrading biocompatible coat for 3D-printed polylactic acid scaffold for bone regeneration.","authors":"Mai M Eldokmak, Marwa M Essawy, Sally Abdelkader, Salma Abolgheit","doi":"10.1007/s10266-024-00945-x","DOIUrl":"10.1007/s10266-024-00945-x","url":null,"abstract":"<p><p>Poly-lactic acid (PLA) has been proposed in dentistry for several regenerative procedures owing to its biocompatibility and biodegradability. However, the presence of methyl groups renders PLA hydrophobic, making the surface less ideal for cell attachment, and it does not promote tissue regeneration. Upgrading PLA with inductive biomaterial is a crucial step to increase the bioactivity of the PLA and allow cellular adhesion. Our purpose is to evaluate biocompatibility, bioactivity, cellular adhesion, and mechanical properties of 3D-printed PLA scaffold coated with poly-dopamine (PDA) and nano-hydroxyapatite (n-HA) versus PLA and PLA/n-HA scaffolds. The fused deposition modelling technique was used to print PLA, PLA with embedded n-HA particles, and PLA scaffold coated with PDA/n-HA by immersion. After matrices characterization for their chemical composition and surface properties, testing the compressive strength was pursued using a universal testing machine. The bioactivity of scaffolds was evaluated by monitoring the formation of calcium phosphate compounds after simulated body fluid immersion. The PLA/PDA/n-HA scaffold showed the highest compressive strength which was 29.11 ± 7.58 MPa with enhancing calcium phosphate crystals deposition with a specific calcium polyphosphate phase formed exclusively on PLA/PDA/n-HA. With cell viability assay, the PDA/n-HA-coated matrix was biocompatible with increase in the IC<sub>50</sub>, reaching ⁓ 176.8 at 72 without cytotoxic effect on the mesenchymal stem cells, promoting their adhesion and proliferation evaluated by confocal microscopy. The study explored the biocompatibility, bioactivity, and the cell adhesion ability of PDA/n-HA coat on a 3D-printed PLA scaffold that qualifies its use as a promising regenerative material.</p>","PeriodicalId":19390,"journal":{"name":"Odontology","volume":" ","pages":"89-100"},"PeriodicalIF":1.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141071537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
OdontologyPub Date : 2025-01-01Epub Date: 2024-09-03DOI: 10.1007/s10266-024-00987-1
Shuai Wang, Yan Tu, Hao Yu, Zhen Li, Jinqiu Feng, Shangfeng Liu
{"title":"Animal models and related techniques for dentin study.","authors":"Shuai Wang, Yan Tu, Hao Yu, Zhen Li, Jinqiu Feng, Shangfeng Liu","doi":"10.1007/s10266-024-00987-1","DOIUrl":"10.1007/s10266-024-00987-1","url":null,"abstract":"<p><p>The intricate and protracted process of dentin formation has been extensively explored, thanks to the significant advancements facilitated by the use of animal models and related techniques. Despite variations in their effectiveness, taking into account factors such as sensitivity, visibility, and reliability, these models or techniques are indispensable tools for investigating the complexities of dentin formation. This article focuses on the latest advances in animal models and related technologies, shedding light on the key molecular mechanisms that are essential in dentin formation. A deeper understanding of this phenomenon enables the careful selection of appropriate animal models, considering their suitability in unraveling the underlying molecular intricacies. These insights are crucial for the advancement of clinical drugs targeting dentin-related ailments and the development of comprehensive treatment strategies throughout the duration of the disease.</p>","PeriodicalId":19390,"journal":{"name":"Odontology","volume":" ","pages":"42-60"},"PeriodicalIF":1.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142120346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}