Journal of prosthodontic research最新文献_第10页

Osteogenic effect of low-intensity pulsed ultrasound on peri-implant bone: A systematic review and meta-analysis. 低强度脉冲超声波对种植体周围骨的成骨效应：系统回顾和荟萃分析。

IF 3.2 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-07-31 DOI: 10.2186/jpr.JPR_D_23_00068

Yingying Wang, Ximeng Cao, Yingyi Shen, Qi Zhong, Yujie Huang, Yifan Zhang, Qingfeng Huang, Chun Xu

{"title":"Osteogenic effect of low-intensity pulsed ultrasound on peri-implant bone: A systematic review and meta-analysis.","authors":"Yingying Wang, Ximeng Cao, Yingyi Shen, Qi Zhong, Yujie Huang, Yifan Zhang, Qingfeng Huang, Chun Xu","doi":"10.2186/jpr.JPR_D_23_00068","DOIUrl":"10.2186/jpr.JPR_D_23_00068","url":null,"abstract":"Purpose This study aimed to evaluate the effect of low-intensity pulsed ultrasound (LIPUS) on promoting osseointegration around dental implants.Study selection A comprehensive search was performed on two databases, including MEDLINE (PubMed) and Web of Science to identify relevant studies published before June 1, 2022. Randomized controlled trials that met the inclusion criteria were selected for the study. The year of publication, study design, animal species, number of animals, number of implants, implant position, implant size, intervention, follow-up time, bone volume ratio (BV/TV), bone-implant contact ratio (BIC), and implant removal torque value (RTV) measurements, including mean and SD, were extracted.Results Ten randomized trials were included in this meta-analysis. The results showed that LIPUS significantly promoted osteogenesis around dental implants. Furthermore, in animal models of pre-existing diseases such as osteoporosis and diabetes, LIPUS had the same effect. The included data were divided into subgroups to explore the effects of different follow-up time, acoustic intensities, and frequencies. Results showed that higher acoustic intensities and frequencies significantly improve the osteogenic effects of LIPUS. There was some degree of heterogeneity owing to bias in the included studies. More high-quality randomized controlled trials are necessary in the future.Conclusions LIPUS can promote bone healing around dental implants and is an attractive option for edentulous patients, especially those with pre-existing diseases. Further clinical trials on the use of LIPUS in implant dentistry are warranted. Furthermore, future studies must pay more attention to acoustic intensity and frequency.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"215-226"},"PeriodicalIF":3.2,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9897514","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}

引用次数: 0

Influence of stress-relieving heat treatments on the efficacy of Co-Cr-Mo-W alloy copings fabricated using selective laser melting. 应力消除热处理对利用选择性激光熔化技术制造的 Co-Cr-Mo-W 合金盖板功效的影响。

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-07-13 DOI: 10.2186/jpr.JPR_D_22_00283

Hein Linn Htat, Atsushi Takaichi, Yuka Kajima, Nuttaphon Kittikundecha, Shingo Kamijo, Takao Hanawa, Noriyuki Wakabayashi

{"title":"Influence of stress-relieving heat treatments on the efficacy of Co-Cr-Mo-W alloy copings fabricated using selective laser melting.","authors":"Hein Linn Htat, Atsushi Takaichi, Yuka Kajima, Nuttaphon Kittikundecha, Shingo Kamijo, Takao Hanawa, Noriyuki Wakabayashi","doi":"10.2186/jpr.JPR_D_22_00283","DOIUrl":"10.2186/jpr.JPR_D_22_00283","url":null,"abstract":"Purpose This study aimed to evaluate the influence of stress-relieving heat treatments on the metal-ceramic bond strength and fitness accuracy of selective laser melting (SLM)-fabricated Co-Cr alloy copings.Methods SLM-manufactured Co-Cr samples were stress-relieved at 750 (Ht-750) and 1150 °C (Ht-1150). The microstructure, surface roughness, metal-ceramic bond strength, marginal and internal fit, Vickers hardness, and residual stress were then compared with those of the non-heat-treated group (As-built). The results were analyzed using one-way ANOVA and post-hoc tests (Tukey's or Student's t test) (P = 0.05).Results The microstructure of the Ht-1150 samples had a brittle oxide layer and lower surface roughness, resulting in significantly lower bond strength values than those of the other groups. The As-built group exhibited significantly lower marginal gap values than the Ht-750 and Ht-1150 groups. Therefore, the post-heat treatments degraded the marginal fitness. The surface residual stress in all sample groups were compressive because of the sandblasting effect. The compressive stresses were larger in Ht-1150 than in As-built and Ht-750 owing to their low hardness values.Conclusions Stress-relief annealing porcelain-fused-to-metal single crowns does not improve bond strength and degrades fitness accuracy because additional post-heat treatments induce thermal distortion. These findings are expected to facilitate the direct application of As-built SLM single crowns in dentistry to minimize post-manufacturing costs and time.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"310-318"},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9763794","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}

引用次数: 0

Focus of dental sleep medicine on obstructive sleep apnea in older adults: A narrative review. 牙科睡眠医学对老年人阻塞性睡眠呼吸暂停的关注：叙述性综述。

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-08-30 DOI: 10.2186/jpr.JPR_D_23_00047

Kentaro Okuno, Liqin Wang, Fernanda R Almeida

{"title":"Focus of dental sleep medicine on obstructive sleep apnea in older adults: A narrative review.","authors":"Kentaro Okuno, Liqin Wang, Fernanda R Almeida","doi":"10.2186/jpr.JPR_D_23_00047","DOIUrl":"10.2186/jpr.JPR_D_23_00047","url":null,"abstract":"Purpose: To review dental sleep medicine in older adults based on the literature.Study selection: This narrative review focuses on sleep physiology, common sleep disorders, and obstructive sleep apnea (OSA) in older adults and their management.Results: Sleep physiology differs between older and younger adults, with sleep disturbances occurring more frequently in older adults. The prevalence of insomnia increases in older adults due to age-related changes in sleep physiology. Insomnia, sleep-disordered breathing, periodic limb movement disorder, restless legs syndrome, and rapid eye movement (REM) sleep behavior disorder are common sleep disorders in older adults. OSA is more prevalent in older adults, and its effects on them are considered more substantial than those on younger adults. The treatment of older patients with mandibular advancement devices may be less effective and more complex owing to potential impairments in oral and dental health. Furthermore, the prevalence of edentulism in older adults is decreasing while life expectancy is increasing.Conclusions: As older adults have comorbidities that affect sleep quality, dentists should consider the effects of sleep physiology and sleep disorders in these patients. OSA may decrease the quality of life and increase the risk of developing other diseases. Therefore, dentists proposing treatment with mandibular advancement devices need to inform patients of their potential lack of efficacy and the requirement for careful follow-up owing to known and unknown side effects.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"227-236"},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10122082","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}

引用次数: 0

Splinting or non-splinting of fixed prostheses on adjacent implants: A critical review. 邻近种植体上固定义齿的夹板固定或非夹板固定：重要综述。

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-08-31 DOI: 10.2186/jpr.JPR_D_22_00220

Daniella Ahumada-DeGirolamo, Andrea Azocar, Carlos Delpiano-Mesina, Pedro Maldonado-Cortés, Miguel Angel Muñoz, Issis Luque-Martínez, Francisco Bravo-Gallardo

{"title":"Splinting or non-splinting of fixed prostheses on adjacent implants: A critical review.","authors":"Daniella Ahumada-DeGirolamo, Andrea Azocar, Carlos Delpiano-Mesina, Pedro Maldonado-Cortés, Miguel Angel Muñoz, Issis Luque-Martínez, Francisco Bravo-Gallardo","doi":"10.2186/jpr.JPR_D_22_00220","DOIUrl":"10.2186/jpr.JPR_D_22_00220","url":null,"abstract":"Purpose: The present study aimed to identify, through a critical review of the literature, the success factors associated with the splinting of fixed prostheses on adjacent implants of the posterior sectors in partially edentulous patients compared with those not splinted.Study selection: A MEDLINE strategy was implemented based on a research question to systematically search and extract information from databases (PubMed and Scopus) using MeSH terms/keywords identified for each domain. Systematic reviews, clinical and in vitro studies were selected and classified according to eligibility criteria based on the research question and level of evidence using the PRISMA flowchart.Results: A total of 32 studies were selected for data extraction and analysis according to study design (three systematic reviews, 14 clinical studies, and 15 in vitro studies). Overall, the studies found no significant difference in the association between the survival rate and prosthesis type. In clinical studies, there have been no differences in marginal bone loss between splinted and non-splinted prostheses, and the influence of peri-implant status and restorative materials has been poorly evaluated. The distribution of stress and loads determined in the in vitro studies showed results that could favor splinted prostheses; however, are generally associated with implant design.Conclusions: The need for splinted or non-splinted adjacent implant-supported prostheses remains controversial. The reviewed evidence indicates that factors such as implant size and its relationship with coronal height could be important in decision-making.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"206-214"},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10494624","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}

引用次数: 0

Influence of ambient light conditions on intraoral scanning: A systematic review. 环境光条件对口内扫描的影响：系统回顾

IF 3.2 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-08-11 DOI: 10.2186/jpr.JPR_D_23_00098

Yun Ma, Yong-Qing Guo, Mohammed Qasem Saleh, Hao Yu

{"title":"Influence of ambient light conditions on intraoral scanning: A systematic review.","authors":"Yun Ma, Yong-Qing Guo, Mohammed Qasem Saleh, Hao Yu","doi":"10.2186/jpr.JPR_D_23_00098","DOIUrl":"10.2186/jpr.JPR_D_23_00098","url":null,"abstract":"Purpose: To systematically assess the influence of ambient light on the accuracy and scanning time of intraoral scanning.Study selection: The present systematic review (CRD 42022346672) was registered at the International Prospective Register of Systematic Reviews (PROSPERO) and was performed based on the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020. Electronic searches were conducted using PubMed, Web of Science, and EMBASE, complemented by gray literature, references, and citations of the included studies. The primary outcome was accuracy, and the scanning time was a secondary outcome. Owing to the high heterogeneity, the pooled data were analyzed descriptively.Results: Six in vitro and two in vivo experiments were performed. Three in vitro studies reported both the accuracy and scanning time of the intraoral scans, whereas the remaining studies exclusively evaluated the accuracy. The studies mainly investigated the influence of illumination levels (0-11000 lux) on intraoral scanning. Intraoral scans revealed optimal accuracy at 1000-lux illumination for complete-arch dentition scans, whereas the influence of illumination levels on 4-unit or shorter scans was not clinically significant. The intraoral scans obtained using confocal microscopy were less affected by the illumination levels than those obtained using the active triangulation technique. Furthermore, the scanning time tended to increase with increasing illumination.Conclusions: Evidently from the limited number of studies conducted, ambient light illumination had considerable influence on the accuracy and scanning time of intraoral scanning, which appeared to be related to the scanning range and imaging technology.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"237-245"},"PeriodicalIF":3.2,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9990694","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}

引用次数: 0

Fatigue life prediction considering variability for additively manufactured pure titanium clasps. 考虑到增材制造纯钛扣的变异性的疲劳寿命预测。

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-08-24 DOI: 10.2186/jpr.JPR_D_23_00074

Kento Odaka, Shota Kamiyama, Naoki Takano, Yoshihiko Uematsu, Satoru Matsunaga

{"title":"Fatigue life prediction considering variability for additively manufactured pure titanium clasps.","authors":"Kento Odaka, Shota Kamiyama, Naoki Takano, Yoshihiko Uematsu, Satoru Matsunaga","doi":"10.2186/jpr.JPR_D_23_00074","DOIUrl":"10.2186/jpr.JPR_D_23_00074","url":null,"abstract":"Purpose: This study aims to develop a numerical prediction method for the average and standard deviation values of the largely varied fatigue life of additively manufactured commercially pure titanium (CPTi grade 2) clasps. Accordingly, the proposed method is validated by applying it to clasps of different shapes.Methods: The Smith-Watson-Topper (SWT) equation and finite element analysis (FEA) were used to predict the average fatigue life. The variability was expressed by a 95% reliability range envelope based on the experimentally determined standard deviation.Results: When predicting the average fatigue life, the previously determined fatigue parameters implemented in the SWT equation were found to be useful after conducting fatigue tests using a displacement-controlled fatigue testing machine. The standard deviation with respect to stroke and fatigue life was determined for each clasp type to predict variability. The proposed prediction method effectively covered the experimental data. Subsequently, the prediction method was applied to clasps of different shapes and validated through fatigue tests using 22 specimens. Finally, the fracture surface was observed using scanning electron microscopy (SEM). Many manufacturing process-induced defects were observed; however, only the surface defects where the maximum tensile stress occurred were crucial.Conclusions: It was confirmed that the fatigue life of additively manufactured pure titanium parts is predictable before the manufacturing process considering its variability by performing only static elasto-plastic FEA. This outcome contributes to the quality assurance of patient-specific clasps without any experimental investigation, reducing total costs and response time.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"336-346"},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10049764","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}

引用次数: 0

Clinical application of robots in dentistry: A scoping review. 机器人在牙科中的临床应用：范围综述。

IF 3.2 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-06-10 DOI: 10.2186/jpr.JPR_D_23_00027

Yajie Li, Yuka Inamochi, Zuo Wang, Kenji Fueki

{"title":"Clinical application of robots in dentistry: A scoping review.","authors":"Yajie Li, Yuka Inamochi, Zuo Wang, Kenji Fueki","doi":"10.2186/jpr.JPR_D_23_00027","DOIUrl":"10.2186/jpr.JPR_D_23_00027","url":null,"abstract":"Purpose: The surge in digitalization and artificial intelligence has led to the wide application of robots in various fields, but their application in dentistry started relatively late. This scoping review aimed to comprehensively explore and map the current status of the clinical application of robots in dentistry.Study selection: An iterative approach was used to gather as much evidence as possible from four online databases, including PubMed, the China National Knowledge Infrastructure, the Japan Science and Technology Information Aggregator, Electronic, and the Institute of Electrical and Electronics Engineers, from January 1980 to December 2022.Results: A total of 113 eligible articles were selected from the search results, and it was found that most of the robots were developed and applied in the United States (n = 56; 50%). Robots were clinically applied in oral and maxillofacial surgery, oral implantology, prosthodontics, orthodontics, endodontics, and oral medicine. The development of robots in oral and maxillofacial surgery and oral implantology is relatively fast and comprehensive. About 51% (n = 58) of the systems had reached clinical application, while 49% (n = 55) were at the pre-clinical stage. Most of these are hard robots (90%; n = 103), and their invention and development were mainly focused on university research groups with long research periods and diverse components.Conclusions: There are still limitations and gaps between research and application in dental robots. While robotics is threatening to replace clinical decision-making, combining it with dentistry to gain maximum benefit remains a challenge for the future.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"193-205"},"PeriodicalIF":3.2,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9614658","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}

引用次数: 0

Effects of ceramic thickness, ceramic translucency, and light transmission on light-cured bulk-fill resin composites as luting cement of lithium disilicate based-ceramics. 陶瓷厚度、陶瓷半透明度和透光率对光固化大块填充树脂复合材料作为二硅酸锂基陶瓷胶合剂的影响

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-05-17 DOI: 10.2186/jpr.JPR_D_22_00304

Ting-An Chen, Pei-Ying Lu, Po-Yen Lin, Chih-Wen Chi, Hon Yin Cheng, Yu-Jung Lai, Fajen Wang, Yu-Chih Chiang

{"title":"Effects of ceramic thickness, ceramic translucency, and light transmission on light-cured bulk-fill resin composites as luting cement of lithium disilicate based-ceramics.","authors":"Ting-An Chen, Pei-Ying Lu, Po-Yen Lin, Chih-Wen Chi, Hon Yin Cheng, Yu-Jung Lai, Fajen Wang, Yu-Chih Chiang","doi":"10.2186/jpr.JPR_D_22_00304","DOIUrl":"10.2186/jpr.JPR_D_22_00304","url":null,"abstract":"Purpose: To assess the effects of ceramic thickness, ceramic translucency, and light transmission on restorative composites used as luting cement for lithium disilicate-based ceramics.Methods: Four luting types of cement were tested (n=8); a dual-cured resin cement (Multilink N), a light-cured conventional flowable composite (Tetric N-Flow), and two light-cured bulk-fill flowable composites (Tetric N-Flow Bulk Fill and X-tra base). The 20 s- or 40 s-light (1000 mW/cm2) was transmitted through 1- or 2-mm-thick high- or low-translucency (HT- or LT-) ceramic discs (IPS e.Max press) to reach the 1-mm-thick luting cement. Light transmitted to cement without ceramic served as a control. Vickers hardness number (VHN), flexural strength (FS), fractography, and degree of conversion (DC) were evaluated. One-way and multi-way analysis of variance was conducted to determine the effects of factors on VHN and FS.Results: Ceramic thickness, light transmission time, and cement type significantly affected the VHN of the luting cement (P < .000). Only Multilink N (LT- and HT-1mm) and Tetric N-Flow (HT-1mm) reached 90% VHN of corresponding control by 20 s-light transmissions, but Tetric N-Flow exhibited lowest VHN and approximately 1/3-1/2 VHN of Multilink N (P < 0.05). X-tra base expressed superior physicochemical properties to Tetric N-Flow Bulk Fill (P < 0.05) and reached >90% VHN of control in all conditions with 40 s-light transmissions except for LT-2 mm. DC, FS, and fractography supported these findings.Conclusions: The light-cured bulk-fill composite served as a luting cement for lithium-disilicate-based ceramics in a product-dependent manner. Light transmission time is crucial to ensure sufficient luting cement polymerization.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"255-263"},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9479552","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}

引用次数: 0

Effects of surface glazing on the mechanical and biological properties of 3D printed permanent dental resin materials. 表面上釉对 3D 打印永久性牙科树脂材料的机械和生物特性的影响。

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-06-22 DOI: 10.2186/jpr.JPR_D_22_00261

Na-Eun Nam, Na-Kyung Hwangbo, Jong-Eun Kim

{"title":"Effects of surface glazing on the mechanical and biological properties of 3D printed permanent dental resin materials.","authors":"Na-Eun Nam, Na-Kyung Hwangbo, Jong-Eun Kim","doi":"10.2186/jpr.JPR_D_22_00261","DOIUrl":"10.2186/jpr.JPR_D_22_00261","url":null,"abstract":"Purpose This study aimed to determine the surface glazing effect on the mechanical and biological properties of three-dimensional printed dental permanent resins.Methods Specimens were prepared using Formlabs, Graphy Tera Harz permanent, and NextDent C&B temporary crown resins. Specimens were divided into three groups: samples with untreated surfaces, glazed surfaces, and sand-glazed surfaces. The flexural strength, Vickers hardness, color stability, and surface roughness of the samples were analyzed to identify their mechanical properties. Their cell viability and protein adsorption were analyzed to identify their biological properties.Results The flexural strength and Vickers hardness of the samples with sand glazed and glazed surfaces were significantly increased. The color change was higher for surface untreated samples than that for the samples with sand-glazed and glazed surfaces. The surface roughness of the samples with sand-glazed and glazed surfaces was low. The samples with sand-glazed and glazed surfaces have low protein adsorption ability and high cell viability.Conclusions Surface glazing increased the mechanical strength, color stability, and cell compatibility, while reducing the Ra and protein adsorption of 3D-printed dental resins. Thus, a glazed surface exhibited a positive effect on the mechanical and biological properties of 3D-printed resins.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"273-282"},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9526051","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}

引用次数: 0

Marginal adaptation and fracture resistance of milled and 3D-printed CAD/CAM hybrid dental crown materials with various occlusal thicknesses. 不同咬合厚度的铣制和 3D 打印 CAD/CAM 混合牙冠材料的边缘适应性和抗断裂性。

IF 3.6 2区医学

Journal of prosthodontic research Pub Date : 2024-04-08 Epub Date: 2023-07-12 DOI: 10.2186/jpr.JPR_D_23_00089

Pisit Suksuphan, Nantawan Krajangta, Pavinee Padipatvuthikul Didron, Thanakorn Wasanapiarnpong, Thanasak Rakmanee

{"title":"Marginal adaptation and fracture resistance of milled and 3D-printed CAD/CAM hybrid dental crown materials with various occlusal thicknesses.","authors":"Pisit Suksuphan, Nantawan Krajangta, Pavinee Padipatvuthikul Didron, Thanakorn Wasanapiarnpong, Thanasak Rakmanee","doi":"10.2186/jpr.JPR_D_23_00089","DOIUrl":"10.2186/jpr.JPR_D_23_00089","url":null,"abstract":"Purpose: To evaluate the marginal adaptation and fracture resistance of three computer-aided design/computer-assisted manufacturing hybrid dental materials with different occlusal thicknesses.Methods: Ninety single-molar crowns were digitally fabricated using a milled hybrid nanoceramic (Cerasmart, CE), polymer-infiltrated ceramic network (PICN, Vita Enamic, VE), and 3D-printed materials (Varseosmile, VS) with occlusal thicknesses of 0.8, 1, and 1.5 mm (10 specimens/group). Anatomical 3D-printed resin dies (Rigid 10K) were used as supporting materials. A CEREC MCX milling unit and a DLP-based 3D printer, Freeform Pro 2, were utilized to produce the crown samples. Before cementation, the marginal adaptation, absolute marginal discrepancy (AMD), and marginal gap (MG) were assessed using micro-CT scanning. After cementation with self-adhesive resin cement, fracture resistance was evaluated using a universal testing machine. The number of fractured crowns and the maximum fracture values (N) were recorded. Data were statistically analyzed using both one- and two-way ANOVA, followed by Tukey's honestly significant difference (HSD) test.Results: For all occlusal thicknesses, the VS crowns demonstrated the lowest AMD and MG distances, significantly different from those of the other two milling groups (P < 0.05), whereas CE and VE did not differ significantly (P > 0.05). All VS crowns were fractured using the lowest loading forces (1480.3±226.1 to 1747.2±108.7 N). No CE and 1 and 1.5 mm VE crowns fractured under a 2000 N maximum load.Conclusions: All hybrid-material crowns demonstrated favorable marginal adaptation within a clinically acceptable range, with 3D printing yielding superior results to milling. All materials could withstand normal occlusal force even with a 0.8 mm occlusal thickness.","PeriodicalId":16887,"journal":{"name":"Journal of prosthodontic research","volume":" ","pages":"326-335"},"PeriodicalIF":3.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9763793","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}

引用次数: 0