Journal of prosthodontic research最新文献

{"title":"Short- and long-term effects of mandibular advancement device therapy for obstructive sleep apnea on temporomandibular disorders: A systematic review and meta-analysis.","authors":"Shaoyuan Liu, Hiroyuki Ishiyama, Suvichaya Angkulmahasuk, Akira Nishiyama, Kenji Fueki","doi":"10.2186/jpr.JPR_D_25_00034","DOIUrl":"10.2186/jpr.JPR_D_25_00034","url":null,"abstract":"<p><strong>Purpose: </strong>This systematic review and meta-analysis investigated the effects of mandibular advancement device (MAD) therapy on temporomandibular disorders (TMDs) in patients with obstructive sleep apnea (OSA).</p><p><strong>Study selection: </strong>We included 14 clinical studies assessing the signs and symptoms of TMDs in patients with OSA treated with MAD therapy. The analysis was divided into short-term (<6 months) and long-term (≥1 year) follow-up phases. Odds ratios (OR) and 95% confidence intervals (CI) were calculated for each study during follow-up. The certainty of the evidence was assessed using the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) methodology, and meta-analysis was conducted using Review Manager version 5.4.</p><p><strong>Results: </strong>Across the 14 studies included, the average follow-up period was 18.4 months, and the overall certainty of the evidence was rated as very low. Four studies used the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD), six used the Helkimo Anamnestic Index, and four employed questionnaires. In short-term follow-up, a significant increase in pain-related TMDs was observed, including pain in the temporomandibular joint (TMJ) or masticatory muscles (pain-related TMDs: OR:4.49; 95%CI: 1.46 to 13.81, TMJ or masticatory muscles pain: OR:2.90; 95%CI: 1.26 to 6.71). Conversely, during long-term follow-up, the odds of pain in the TMJ or masticatory muscles were significantly reduced (OR:0.21; 95%CI, 0.05 0.89)Conclusions: MAD therapy for OSA did not cause long-term adverse effects on the TMJ or masticatory muscles. However, its short-term use may result in pain-related TMDs, highlighting the need to monitor and manage these symptoms during this period.</p>","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"159-172"},"PeriodicalIF":3.4,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144707851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The influences of different aging processes on color stability of amine-free light-cured resin luting agents.","authors":"Yu Toida, Md Refat Readul Islam, Buer Qi, Shuhei Hoshika, Hidehiko Sano, Atsushi Tomokiyo","doi":"10.2186/jpr.JPR_D_24_00265","DOIUrl":"10.2186/jpr.JPR_D_24_00265","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the color stability of light-cured resin luting agents after artificial aging using an amine-free initiator system.</p><p><strong>Methods: </strong>Five groups, each with eight samples, were produced. Specimens were divided as follows: two light-cured resin luting agents (PANAVIA Veneer LC; PVL [experimental group] and Variolink Esthetic LC; VEL [control group]), one dual-cured resin luting agent (PANAVIA V5; PV5 [control group]), and one composite resin (ESTELITE Σ QUICK; ESQ [control group]). The samples were divided into five groups subjected to different accelerated aging conditions: Condition 1 (air storage), Condition 2 (water storage), Condition 3 (temperature-moisture combination: as a control for Condition 2), Condition 4 (ultraviolet (UV) aging: to predict the performance in a laminate veneer restoration margin area), and Condition 5 (without UV aging to serve as a baseline control by eliminating environmental factors). Spectrophotometric measurements were performed. Changes in the color (∆E₀₀) and a transparency parameter (ΔTP₀₀) were determined. Data were analyzed using one- and two-way ANOVAs at a significance level of 5%.</p><p><strong>Results: </strong>PANAVIA V5 in water storage exhibited the highest ΔE₀₀ across all materials, except Variolink Esthetic LC (P < 0.001). PANAVIA Veneer LC under Condition 1 did not show a statistically significant difference in ΔE₀₀ compared to the other materials (P = 1.000). PANAVIA Veneer LC and ESQ showed significantly smaller ΔTP₀₀ values than the other materials (P < 0.001).</p><p><strong>Conclusions: </strong>Based on the results of this study, PANAVIA Veneer LC shows better color stability, even under artificial aging conditions, which is clinically desirable.</p>","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"224-232"},"PeriodicalIF":3.4,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144600841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Use of digital technology in maxillofacial prosthetic treatment of cleft lip and palate in patients with severe periodontitis: A case report.","authors":"Yuki Mouri, Mai Murase, Satoshi Matsui, Junichiro Wada, Noriyuki Wakabayashi","doi":"10.2186/jpr.JPR_D_25_00061","DOIUrl":"10.2186/jpr.JPR_D_25_00061","url":null,"abstract":"<p><strong>Patients: </strong>A 56-year-old man with a left-sided cleft lip and palate was referred to our department due to mastication and speech difficulties. His existing prostheses have become unstable owing to changes in the remaining dentition over 10 years. For the fabrication of the new interim maxillofacial prostheses, a digital impression technique was selected as the conventional technique posed medical risks due to hypermobile teeth and maxillary defects. New interim maxillofacial prostheses were fabricated using a combination of the digital impression technique and a bite-seating impression, performed with trial prostheses and impression material. The patient has been using the new interim prostheses comfortably since delivery. The oral functional evaluation yielded favorable results.</p><p><strong>Discussion: </strong>Patients with cleft lip and palate should use their existing maxillofacial prostheses during the fabrication of new ones, even if they are of suboptimal quality. Although addressing these issues using conventional techniques is challenging, digital technology provides a viable solution. However, impression material is essential for capturing mucosal defects and complex anatomy in cleft lip and palate cases; therefore, digital data should be supplemented by either well-adjusted existing prostheses or bite-seating impressions using impression material before new prostheses fabrication. Although his occlusal force was lower than the criterion for the oral hypofunction test, his masticatory performance remained favorable. Speech analysis revealed persistent air leakage; however, all scores improved with the prostheses.</p><p><strong>Conclusions: </strong>Digital technology has enabled the safe fabrication of interim maxillofacial prostheses, resulting in improved masticatory and speech performance.</p>","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"324-330"},"PeriodicalIF":3.4,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145206603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fatigue performance and failure load of minimally-invasive occlusal veneers made of lithium disilicate and composition-gradient multilayered zirconia: An in vitro study.","authors":"Lea S Prott, Monique Harlaß, Alexander Marksteiner, Frank A Spitznagel, Robert Langner, Yu Zhang, Markus B Blatz, Petra C Gierthmuehlen","doi":"10.2186/jpr.JPR_D_25_00068","DOIUrl":"10.2186/jpr.JPR_D_25_00068","url":null,"abstract":"<p><strong>Purpose: </strong>To investigate the effect of ceramic material (lithium disilicate, LDS vs. composition-gradient multilayered zirconia [4Y-PSZ and 5-PSZ], Z) and ceramic layer thickness (0.5 mm, 1.0 mm, and 1.5 mm) on fatigue performance and failure load of occlusal veneers on molars.</p><p><strong>Methods: </strong>Seventy-two CAD-CAM-fabricated occlusal veneer restorations (IPS e.max CAD; IPS e.max ZirCAD Prime Esthetic, Ivoclar Vivadent) were divided into six groups (n=12, LDS-1.5, LDS-1.0, LDS-0.5; Z-1.5, Z-1.0, Z-0.5). Restorations were adhesively cemented (Variolink Esthetic DC, Ivoclar Vivadent) to dentin-analogue composite dies (Z100, 3M ESPE) and exposed to thermomechanical fatigue (1.2 million cycles, 49 N, 1.6 Hz, 5-55° C). Single-load-to-failure was tested with a universal testing machine. Data were analyzed using ANOVA with Tukey post-hoc tests and t-tests (P < 0.05).</p><p><strong>Results: </strong>The overall success rate across all materials and layer thicknesses was 91.7%. Half of the specimens of group Z-0.5 revealed cracks after chewing simulation. Occlusal veneers fabricated from LDS withstood significantly higher failure loads than gradient multilayered zirconia veneers in all tested thicknesses. The mean failure load values led to the following ranking: 3194 N (LDS-0.5)>2683 N (LDS-1.0)>2338 N (LDS-1.5)>1744 N (Z-1.5)>1310 N (Z-0.5)>1198 N (Z-1.0).</p><p><strong>Conclusions: </strong>Ultrathin LDS occlusal veneers outperformed thin and standard thick counterparts, as well as gradient multilayered zirconia veneers at all thickness levels. Ultrathin gradient multilayered zirconia occlusal veneers were prone to cracks during thermomechanical fatigue. Individual mechanical properties need to be considered when aligning the restoration within the multilayered zirconia blank.</p>","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"233-242"},"PeriodicalIF":3.4,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144992867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The clinical performance of CAD/CAM-fabricated hybrid ceramic restorations in cases with severe wear: A 3-year clinical trial.","authors":"Tsung-Chieh Yang, Chun-Min Shen, Hsin-Chou Chen, Chih-Chun Tseng","doi":"10.2186/jpr.JPR_D_24_00267","DOIUrl":"10.2186/jpr.JPR_D_24_00267","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the clinical use of CAD/CAM hybrid ceramics in patients with severe tooth wear.</p><p><strong>Methods: </strong>Forty-nine patients with severe tooth wear underwent prosthetic management with 116 hybrid ceramic restorations. The restorations were evaluated at 1 week and at 3, 6, 12, 18, 24, 30, and 36 months after placement. The amount of wear on the restorations, antagonist teeth, and opposite teeth was compared using digital superimposition analysis. A questionnaire was used to evaluate participants' satisfaction with the restorations. Complications were recorded, and survival rates were estimated using Kaplan-Meier analysis.</p><p><strong>Results: </strong>The clinical performance of the restorations was stable for esthetic, functional, and biological parameters up to 3 years, except for greater changes in \"surface and margin staining\" and \"fracture and retention.\" There was no significant difference in the amount of progressive wear among the restorations, antagonist teeth, and opposite side teeth until 18 months; however, the wear on the restorations increased gradually up to 36 months. Higher scores and identical satisfaction results were obtained for the chewing efficiency and cleanability during the observation period. The most common complications were restoration dislodgement (5.2%) and partial marginal chipping (4.3%), which were clinically repaired. Four restorations (3.4%) were extensively fractured and replaced. The estimated survival rate of the hybrid ceramic restorations at 3 years was 88.0%.</p><p><strong>Conclusions: </strong>The clinical use of hybrid ceramic restorations in patients with severe tooth wear improved chewing efficiency and esthetics, provided adequate resistance for load-bearing, and delivered a stable treatment outcome after functional use.</p>","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"250-258"},"PeriodicalIF":3.4,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145437792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of 3D printing systems and orientations on the accuracy of denture bases.","authors":"Yuko Mizukawa, Akiyo Kawamoto, Tamaki Hada, Maiko Iwaki, Manabu Kanazawa, Kazuya Takahashi","doi":"10.2186/jpr.JPR_D_24_00307","DOIUrl":"10.2186/jpr.JPR_D_24_00307","url":null,"abstract":"<p><strong>Purpose: </strong>This study evaluated the effects of two additive manufacturing technologies and three orientations on the accuracy of three-dimensional (3D)-printed complete dentures. Additionally, we examined whether resin differences affected the accuracy of the denture bases under varying printing systems and orientations.</p><p><strong>Methods: </strong>We printed denture bases using digital light processing (DLP) and a liquid crystal display (LCD) in three orientations (0°, 45°, and 90°) with two photopolymer resins (n = 6). Intaglio surfaces were scanned to obtain experimental data. We evaluated trueness by superimposing experimental data onto master data, and assessed precision by pairing and superimposing two of the six datasets. Deviation was evaluated using root mean square (RMS) and color map data. Statistical analysis was conducted using the Kruskal-Wallis method and Mann-Whitney U test (α = 0.05).</p><p><strong>Results: </strong>The DLP printer achieved the highest trueness at an orientation of 90°, whereas the precision was minimally affected by the orientation or printing systems. DLP printers performed well with both recommended and non-recommended resins; however, LCD printers demonstrated better accuracy with the recommended resins. At 0° orientation, the trueness color map for both printers showed negative deviation patterns over the entire palatal surface. Across all manufacturing methods, the precision color maps indicated high reproducibility.</p><p><strong>Conclusions: </strong>Printing system and orientation affect the trueness of 3D-printed dentures. DLP printers set at 90° demonstrated superior trueness for clinical applications. The accuracy was affected by resin, printer, and orientation.</p>","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"288-296"},"PeriodicalIF":3.4,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145917772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nocturnal minimum oxygen saturation as a predictor of functional independence measure improvement in patients recovering from acute stroke: A prospective cohort study.","authors":"Kohei Yamaguchi, Ryosuke Yanagida, Takami Hino, Ayumi Kisara, Kanako Yoshimi, Kazuharu Nakagawa, Haruka Tohara","doi":"10.2186/jpr.JPR_D_25_00038","DOIUrl":"10.2186/jpr.JPR_D_25_00038","url":null,"abstract":"<p><strong>Purpose: </strong>Sleep-disordered breathing (SDB) has received limited attention in stroke rehabilitation, and screening for SDB is inadequate. This study aimed to examine the association between nocturnal hypoxia and functional independence improvement in stroke patients during recovery, with a focus on the potential relevance of SDB in rehabilitation outcomes.</p><p><strong>Methods: </strong>This prospective cohort study included 89 patients admitted for stroke rehabilitation in Chiba, Japan, between August 2021 and March 2024. SDB was assessed using WatchPAT, focusing on nocturnal oxygen saturation parameters, including the minimum SpO₂ (MinSpO₂) and the oxygen desaturation index at 3% (ODI3%). The functional independence measure (FIM) improvement per day of hospitalization (FIM change rate) was the primary outcome. The covariates included age, sex, body mass index, stroke severity, comorbidities, and levels of consciousness.</p><p><strong>Results: </strong>Multivariate regression analyses showed that MinSpO₂ was significantly associated with the total FIM change rate (B [95% CI] = 0.008 [0.003-0.012], P = 0.001) and had a standardized coefficient of 0.337, whereas ODI3% showed no significant association. MinSpO₂ was associated with both motor and cognitive FIM change rates.</p><p><strong>Conclusions: </strong>Nocturnal hypoxia is associated with functional recovery in patients with stroke, highlighting the importance of sleep monitoring in rehabilitation. As a detectable and modifiable factor, it may present opportunities for dental professionals to contribute to patient care through airway assessment and collaborative intervention.</p>","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"243-249"},"PeriodicalIF":3.4,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144958435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical performance, accuracy, and physical-mechanical properties of 3D-printed removable partial denture metal frameworks compared with conventionally and partially digitally produced frameworks: A systematic review.","authors":"Ahmed Yaseen Alqutaibi, Redhwan Saleh Al-Gabri, Anas Saeed Al-Zaghruri, Ahmed E Farghal, Ahmed A Alnazzawi, Mohammed Ahmed Alghauli","doi":"10.2186/jpr.JPR_D_25_00028","DOIUrl":"10.2186/jpr.JPR_D_25_00028","url":null,"abstract":"<p><strong>Purpose: </strong>This systematic review evaluated the clinical performance, physical-mechanical properties, and accuracy of removable partial denture (RPD) frameworks fabricated using three-dimensional (3D) printing technologies-specifically, selective laser sintering (SLS), selective laser melting (SLM), and direct metal laser sintering (DMLS)-compared to those produced by conventional casting or methods using a partial digital workflow.</p><p><strong>Study selection: </strong>Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 guidelines, a literature search was conducted in the PubMed, Scopus, Web of Science, and Cochrane databases in October 2024. Studies were included if they compared the fit, accuracy, mechanical and physical properties, and clinical outcomes of metal RPD frameworks made using 3D printing technologies with those produced using conventional casting or partial digital methods. The risk of bias was assessed using appropriate tools (modified CONSORT, ROB2, and ROBINS-I) based on the study design and a qualitative analysis was conducted. This study received no funding and was registered with PROSPERO (#CRD42024597225).</p><p><strong>Results: </strong>Thirty studies were included: 12 compared 3D printing technologies with conventional casting, eight with partial digital methods, and 10 with both. Clinically, 3D-printed frameworks could improve retention and patient satisfaction. The laboratory results showed higher density, better mechanical properties (yield strength, surface roughness, and microhardness), and varied accuracy by component and method, with SLM and DMLS often outperforming conventional casting. The evidence was limited by methodological variability, a moderate risk of bias in many studies, and inconsistencies across the study designs and parameters.</p><p><strong>Conclusions: </strong>3D-printed RPD metal frameworks demonstrated clinical accuracy and mechanical-physical performance comparable or superior to those of conventional and partially digital methods for RPD frameworks, with ongoing advances expected to further enhance their precision and clinical applicability.</p>","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"206-223"},"PeriodicalIF":3.4,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144992802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"3D-printed hybrid composite for posterior indirect partial restorations: 1-year follow-up primary observation.","authors":"Edoardo Mancuso, Tatjana Maravic, Annamaria Forte, Diego D'Urso, Paolo Baldissara, Annalisa Mazzoni, Lorenzo Breschi, Claudia Mazzitelli","doi":"10.2186/jpr.JPR_D_25_00100","DOIUrl":"10.2186/jpr.JPR_D_25_00100","url":null,"abstract":"<p><strong>Patients: </strong>A 22-year-old female patient presented with a lower right first molar exhibiting an extensive carious lesion beneath an old direct resin composite restoration. Radiographic evaluation revealed pulpal involvement with a periapical infection, accompanied by grade II mobility and a circumferential probing depth of <3 mm. The compromised molar rehabilitation was carried out using a multichromatic 3D-printed onlay. A fully digital workflow was employed, enabling the completion of the procedure in a single clinical session. Following endodontic and restorative treatments, intraoral scans were acquired using a Trios5 scanner. The restoration was digitally designed and 3D printed from STL files using the DWS Systems Dfab printer. The hybrid composite onlay was adhesively luted using a universal self-adhesive resin cement (Panavia SA, Kuraray). Clinical evaluations at 6 months and 1 year demonstrated favorable outcomes, with high patient satisfaction.</p><p><strong>Discussion: </strong>3D printing represents a digital evolution in the fabrication of dental restorations, introducing an additive manufacturing approach distinct from the subtractive processes used in traditional CAD/CAM systems. In cases of severely compromised teeth, 3D-printed, adhesively bonded partial restorations represent a viable treatment option. The hybrid composite used in this study demonstrated favorable clinical and esthetic performance, enabling minimally invasive preparations while preserving sound tooth structure.</p><p><strong>Conclusions: </strong>Chairside 3D printing technology presents an alternative approach for the fabrication of indirect composite restorations in posterior teeth. Although 3D printing is not yet widely adopted in restorative dentistry, its versatility may offer significant advantages for both clinicians and patients in the production of indirect partial restorations.</p>","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"331-336"},"PeriodicalIF":3.4,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145437293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aging performance and bacteria adhesion of 3D-printed, CAD/CAM-milled, and conventional definitive denture resins.","authors":"Po-En Chuang, Fen-Ni Chen, Tzong-Ming Shieh, Cheng-Cho Chuang, Chenxuan Wei, Hiroki Nikawa, Tzu-Yu Peng","doi":"10.2186/jpr.JPR_D_25_00098","DOIUrl":"10.2186/jpr.JPR_D_25_00098","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to evaluate the performance of 3D-printed denture base resins (DBRs) compared with conventionally packed and milled DBRs, examine their biofilm formation and physical properties, and determine the viability of 3D-printed DBRs as a superior alternative in removable prosthodontics.</p><p><strong>Methods: </strong>The DBR samples were fabricated using traditional packing (TRA), milling (MIL), and 3D printing (3DP) methods. All samples were serially polished with an abrasive paper. Biofilm formation was assessed using SYTO 9 and propidium iodide staining as well as confocal laser scanning microscopy. Color and dimensional stability were evaluated following immersion in artificial saliva, and volumetric changes were assessed after the samples were subjected to thermocycling (TC) and highly accelerated stress (HA) aging. Statistical analyses were conducted using one-way analysis of variance with post-hoc Tukey's honestly significant difference test (α = 0.05).</p><p><strong>Results: </strong>MIL exhibited the highest Aggregatibacter actinomycetemcomitans biofilm coverage (94.59%), whereas 3DP exhibited the lowest coverage (58.86%). All DBRs exhibited slight perceptible color changes after immersion in artificial saliva, with 3DP demonstrating the least dimensional changes (2.86%). Following TC and HA aging, all DBRs experienced a volume increase, with TC inducing greater volumetric changes (2.8%-3.9%) than HA (0.8%-2.4%); however, the difference was not statistically significant (P < 0.05).</p><p><strong>Conclusions: </strong>The 3D-printed DBRs demonstrated superior resistance to biofilm formation, along with good color and dimensional stability. These properties indicate strong potential for enhanced hygiene maintenance, esthetics, and long-term clinical performance in denture applications.</p>","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"281-287"},"PeriodicalIF":3.4,"publicationDate":"2026-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145033590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}