The International journal of prosthodontics最新文献

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To Preserve or Extract? A Scoping Review and a Prognostic Decision Tool Using Multispecialty Indicators. 保存还是提取?使用多专科指标的范围综述和预后决策工具。
The International journal of prosthodontics Pub Date : 2025-03-20 DOI: 10.11607/ijp.9068
Reem Al Shaltoni, Batool Alsulaimani, Sunporn Namano, Reem Alsaleh, Luis Del Castillo, Hiroshi Hirayama, Konstantinos Michalakis
{"title":"To Preserve or Extract? A Scoping Review and a Prognostic Decision Tool Using Multispecialty Indicators.","authors":"Reem Al Shaltoni, Batool Alsulaimani, Sunporn Namano, Reem Alsaleh, Luis Del Castillo, Hiroshi Hirayama, Konstantinos Michalakis","doi":"10.11607/ijp.9068","DOIUrl":"10.11607/ijp.9068","url":null,"abstract":"<p><p>Because implant-supported restorations have become very popular, there is a tendency to extract teeth and replace them with implants. However, the first goal of dentistry should always be the preservation of natural teeth, given the prerequisite that these can be maintained with the application of appropriate treatment modalities. Therefore, individual tooth risk assessment and prognosis are very important for the treatment planning process. Four important factors influencing the dentist's decision on whether to save or extract a compromised tooth have been identified, and an extensive search of the related English language literature has been performed. Additionally, a hand search in related journals was implemented, and classic textbooks were consulted. Identified articles on patient-related, periodontal, endodontic, and restorative factors were thoroughly analyzed, focusing on diagnosis and tooth prognosis. A total of 52 references were carefully selected and reviewed. Available information was used to develop a color-coded prognostic decision chart with four different factors and up to 14 crucial parameters. All factors and parameters were analyzed in an effort to help the restorative dentist make a prognostic decision. The proposed color-coded prognostic decision chart can be helpful when a treatment plan is made and predictable restorative care is planned. This comprehensive prognostic decision chart can aid dentists in providing clinical care of high quality and in establishing a consensus on available restorative options. It can additionally help to establish appropriate communication with patients and third-party individuals in the restorative care process, effectively manage risk factors, and provide a framework for quality assessment in restorative treatment.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"235-246"},"PeriodicalIF":0.0,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141289087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Occlusal Veneers and Load-Bearing Capacity of a Restored Tooth. 咬合贴面和修复后牙齿的承重能力。
The International journal of prosthodontics Pub Date : 2025-03-20 DOI: 10.11607/ijp.8906
Topias Yli-Urpo, Lippo Lassila, Timo Närhi, Pekka Vallittu
{"title":"Occlusal Veneers and Load-Bearing Capacity of a Restored Tooth.","authors":"Topias Yli-Urpo, Lippo Lassila, Timo Närhi, Pekka Vallittu","doi":"10.11607/ijp.8906","DOIUrl":"10.11607/ijp.8906","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the influence of restoration bonding and preparation type on the load bearing capacity of a tooth restored with an indirect glass-ceramic or hybrid-ceramic occlusal veneer restoration.</p><p><strong>Materials and methods: </strong>Occlusal surfaces of extracted human molar teeth were prepared for indirect occlusal veneers with or without circumferential chamfer. The occlusal veneers were milled either from CAD/CAM hybrid- ceramic (HC; Cerasmart, GC Dental), or lithium-disilicate glass-ceramic (LDGC; IPS e.max CAD, Ivoclar) blocks. Finalized veneers were bonded to teeth following manufacturers' instructions or according to the technique for the intended deteriorated bonding using n-hexane wax solution preconditioning on restorations (n = 8/group). The ultimate fracture load was recorded, and fracture types were analyzed and classified visually. Statistical analysis was performed using one-way ANOVA.</p><p><strong>Results: </strong>The highest fracture load was recorded in teeth with bonded LDGC veneer (P ≤ .0007). The bonded HC veneers had only a marginally higher fracture load compared to nonbonded veneers. In all groups with deteriorated bonding, veneers loosened without tooth fracture, whereas in the bonded veneer groups tooth fractures were observed, especially in teeth restored with LDGC material.</p><p><strong>Conclusions: </strong>Bonded LDGC occlusal veneers have high load-bearing capacity that exceeds the fracture resistance of tooth structure. Circumferential chamfer preparation for an occlusal veneer has no influence on fracture load of a restored tooth.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"206-213"},"PeriodicalIF":0.0,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140112561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Feasibility of Immediate Implant Placement in Maxillary First Premolars: Prediction of Implant Locations Using Restorations-A Radiographic Study. 上颌第一前磨牙即刻种植的可行性:使用修复体预测种植体位置--一项放射学研究。
The International journal of prosthodontics Pub Date : 2025-03-20 DOI: 10.11607/ijp.8757
Mohit Kheur, Shifa Kalsekar, Supriya Kheur, Ronald E Jung, Tabrez Lakha
{"title":"Feasibility of Immediate Implant Placement in Maxillary First Premolars: Prediction of Implant Locations Using Restorations-A Radiographic Study.","authors":"Mohit Kheur, Shifa Kalsekar, Supriya Kheur, Ronald E Jung, Tabrez Lakha","doi":"10.11607/ijp.8757","DOIUrl":"10.11607/ijp.8757","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the suitability of maxillary premolars for immediate implant placement (IIP). Based on prosthetically driven treatment planning, a simple classification system was developed.</p><p><strong>Materials and methods: </strong>In total, 150 CBCTs of maxillary first premolars were analyzed in BlueskyBio software. The topographic position of the tooth was determined by analyzing the dimensions of the buccal and lingual cortical plates, the distance between the buccolingual plates, and the residual bone height from the root apex to the floor of the sinus. Virtual placement of an implant was carried out such that the implant would be positioned 1 mm apical to the buccal bone crest, would engage 3 mm of bone apical to the root apex, and would have a trajectory so that the abutment access was from the central fossa. Four categories were identified, and the classification was proposed.</p><p><strong>Results: </strong>It was observed that 74% of cases had buccal bone < 1 mm and 26% had buccal bone > 1 mm. It was also observed that 79% cases had an average distance > 3 mm between the root apex and maxillary sinus (with 21% of cases < 3 mm). The categorizations of implant placement were as follows: Type 1 (24%), Type 2 (56.6%), Type 3 (43.3%), and Type 4 (0%).</p><p><strong>Conclusions: </strong>In the majority of maxillary first premolars, IIP is possible with the implants to be placed in the palatal sockets or the furcation area. In cases where the buccal plate thickness is inadequate, simultaneous grafting should be considered between the implant and buccal plate.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"185-190"},"PeriodicalIF":0.0,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140103066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation on the Effectiveness of Digital Scanning Combined with Reverse Engineering Technology in Demonstrating Full-Crown Tooth Preparation. 数字扫描结合逆向工程技术在演示全冠牙制备中的有效性研究
The International journal of prosthodontics Pub Date : 2025-03-20 DOI: 10.11607/ijp.8968
Chuang Li, Bo Zou, Weini Xin, Xiaomin Zhao
{"title":"Investigation on the Effectiveness of Digital Scanning Combined with Reverse Engineering Technology in Demonstrating Full-Crown Tooth Preparation.","authors":"Chuang Li, Bo Zou, Weini Xin, Xiaomin Zhao","doi":"10.11607/ijp.8968","DOIUrl":"10.11607/ijp.8968","url":null,"abstract":"<p><strong>Purpose: </strong>To investigate the effect of digital scanning combined with reverse engineering technology in the demonstration of full-crown tooth preparation.</p><p><strong>Materials and methods: </strong>A total of 31 students were randomly divided into two groups. The students in the control group conducted traditional demonstration using eye-measurement methods. The students in the experimental group carried out improved demonstration using digital intraoral scans with 3D-measurement data. The students in both groups were provided with two resin teeth to conduct full-crown tooth preparation on head model dental simulators. The teeth prepared before and after demonstration were scored according to Chinese Stomatological Association Group Standards with a total score of 100 points. Analysis of covariance (ANCOVA) was performed to comparatively analyze the scores related to the tooth surfaces and the convergence angle between the two groups.</p><p><strong>Results: </strong>Analysis of two prepared teeth (a maxillary right central incisor and first molar) in two groups showed that there was a statistically significant difference in the mean score between the control group and experimental group (central incisor, P = .0039; first molar, P = .0120). The demonstration of the first molar showed that there were statistically significant differences in the scores related to the buccolingual surface (P = .0205) and proximal surface (P = .0023) between the control group and experimental group. There was a statistically significant difference in the score related to the convergence angle of the buccolingual surface between the control group and experimental group (P = .0265).</p><p><strong>Conclusions: </strong>The digital method can effectively improve the quality of tooth preparations and has a pedagogic advantage for posterior teeth, which present greater operational challenges.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"257-263"},"PeriodicalIF":0.0,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141289068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pre-Prosthetic Intrusion of Maxillary Molars by Clear Aligners: A Case Report. 修复前上颌磨牙植入透明矫正器1例报告。
The International journal of prosthodontics Pub Date : 2025-02-24 DOI: 10.11607/ijp.9237
Feng Guo, Chenxu Wang, Wei Cheng, Lang Lei
{"title":"Pre-Prosthetic Intrusion of Maxillary Molars by Clear Aligners: A Case Report.","authors":"Feng Guo, Chenxu Wang, Wei Cheng, Lang Lei","doi":"10.11607/ijp.9237","DOIUrl":"https://doi.org/10.11607/ijp.9237","url":null,"abstract":"<p><p>Insufficient vertical space is often a great challenge for prosthodontic treatment of patients with teeth overeruption. This case report describes a simple technique using clear aligners to intrude over-erupted molars. A 27-year-old woman was diagnosed with left mandibular dentition defect, yet the left third molar was presented in lower arch. However, the prosthetic rehabilitation was limited by the opposing over-erupted molars. Clear aligners therapy (CAT) was used to regain the necessary interocclusal space. After initial molar distalization, subsequent 2.14 mm and 1.3mm intrusion for left maxillary first and second molar was designed to solve the door-wedge effect dilemma. Without mini-screws, considerable intrusion (1.9 mm and 0.9 mm for left maxillary first and second molar, respectively) was achieved within 6 months with minimal discomfort. Radiological and clinical examinations revealed a favorable occlusal relationship and improved alignment for both arches. Outcomes in the case revealed that intruding over-erupted molars via CAT may be an effective approach.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-17"},"PeriodicalIF":0.0,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143495143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fracture Resistance of 3D Printed Restorations in Different Thicknesses for Primary Molars. 不同厚度的3D打印磨牙修复体抗断裂性能研究
The International journal of prosthodontics Pub Date : 2025-02-24 DOI: 10.11607/ijp.9234
Nilge Sarimehmetoglu, Huseyin Simsek
{"title":"Fracture Resistance of 3D Printed Restorations in Different Thicknesses for Primary Molars.","authors":"Nilge Sarimehmetoglu, Huseyin Simsek","doi":"10.11607/ijp.9234","DOIUrl":"https://doi.org/10.11607/ijp.9234","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of this study was to evaluate the fracture resistance of primary tooth crowns fabricated at different thicknesses using two different 3D printing technologies: stereolithography (SLA) and digital light processing (DLP).</p><p><strong>Materials and methods: </strong>A typodont primary second molar tooth was scanned. Using the scanned model, three dies and crowns with thicknesses of 0.5 mm, 1.0 mm and 1.5 mm were created digitally. A total of 60 dies were fabricated from Crom-Cobalt (Cr-Co) using a laser sintering device. Ten crowns per thickness were produced using two types of 3D printers: SLA and DLP. The fracture resistance of the crowns was tested after thermal aging (5/55 oC and 30 s dwell time). The data were analyzed with Independent sampleT-test.</p><p><strong>Results: </strong>There was no significant difference in fracture resistance between the manufacturing methods for crowns in all three thickness groups (p > 0.05). The highest average fracture value was observed in crowns with a thickness of 1.5 mm manufactured using SLA 3D printing.</p><p><strong>Conclusion: </strong>Within the limits of this study, the 3D printing manufacturing method did not affect the fracture resistance of 3D printed primary tooth crowns. It was concluded that these crowns have sufficient fracture resistance and can be used as an alternative treatment option for complete crown of primary teeth.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-18"},"PeriodicalIF":0.0,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143495141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Clinical Evaluation of Lithium Disilicate Chairside CAD/CAM Crown after 10-years. 二硅酸锂椅子式CAD/CAM冠10年后的临床评价。
The International journal of prosthodontics Pub Date : 2025-02-24 DOI: 10.11607/ijp.9257
Dennis J Fasbinder, Gisele Neiva, Don Heys, Ron J Heys
{"title":"Clinical Evaluation of Lithium Disilicate Chairside CAD/CAM Crown after 10-years.","authors":"Dennis J Fasbinder, Gisele Neiva, Don Heys, Ron J Heys","doi":"10.11607/ijp.9257","DOIUrl":"https://doi.org/10.11607/ijp.9257","url":null,"abstract":"<p><strong>Purpose: </strong>This longitudinal clinical trial studied the clinical performance of chairside CAD/CAM fabricated lithium disilicate crowns (IPS e.max CAD; Ivoclar) over ten years of service.</p><p><strong>Materials and methods: </strong>100 CAD/CAM lithium disilicate crowns were fabricated using the CEREC 3 system (Dentsply Sirona). The crowns were adhesively bonded in consecutive groups with one of three cements. ML = self-etching bonding agent and resin cement (MultiLink-Automix; Ivoclar), EC = self-adhesive resin cement (Experimental Cement; Ivoclar), and SC =self-adhesive, light-cured resin cement (SpeedCem; Ivoclar).</p><p><strong>Results: </strong>Mild sensitivity was reported on 15% of the teeth at 1 week. All sensitivity resolved by 4 weeks. At 6 months, 2 (8.7%) of the crowns cemented with ML and 3 (7.7%) of the crowns cemented with EC were described as slightly sensitive by the patient. No patient required treatment for sensitivity and there was no reported sensitivity at any subsequent recalls. The percent alpha scores were above 95% for color match and margin adaptation at all recall intervals. Four crowns debonded, 3 cemented with EC (13, 20 and 36 months) and 1 with ML (36 months). A second MultiLink crown debonded at 110 months (9 years, 2 months). There were four reported cases of crown fracture between 6 years 3 months and 9 years 9 months. There were two biological failures; one due to endodontic treatment and one due to fracture and loss of the core.</p><p><strong>Conclusions: </strong>The lithium disilicate crowns performed very well over 10 years. This study was supported by a grant from Ivoclar.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-29"},"PeriodicalIF":0.0,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143495140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Neuromuscular Position of the TMJ Condyle in Fully Dentate Volunteers Characteristics and Potential Indications. 全齿状志愿者颞下颌髁神经肌肉位置特征及潜在适应症。
The International journal of prosthodontics Pub Date : 2025-02-24 DOI: 10.11607/ijp.9236
Karl-Heinz Utz, Walter Lückerath, Peter Schwarting, Wolfgang Noethlichs, Ralph Büttner, Manfred Grüner, Edgar Fuß, Helmut Stark, Frauke Müller
{"title":"Neuromuscular Position of the TMJ Condyle in Fully Dentate Volunteers Characteristics and Potential Indications.","authors":"Karl-Heinz Utz, Walter Lückerath, Peter Schwarting, Wolfgang Noethlichs, Ralph Büttner, Manfred Grüner, Edgar Fuß, Helmut Stark, Frauke Müller","doi":"10.11607/ijp.9236","DOIUrl":"https://doi.org/10.11607/ijp.9236","url":null,"abstract":"<p><strong>Purpose: </strong>This study comprises the fifth and final part of a comprehensive investigation of the positions of the temporomandibular joint condyles. In this evaluation, we wanted to investigate the neuromuscular position of the mandible.</p><p><strong>Materials and methods: </strong>The neuromuscular condylar positions were recorded by four independent operators in 81 fully dentate subjects with healthy oral function using a central bearing point system and rapid closing movements. The &#34;most frequent adduction point&#34; was determined, and the recordings were repeated twice for each subject. The subjects' maxillary casts were mounted in an articulator using an individual facebow transfer, subsequently the mandibular. casts were mounted with a central-bearing-point registration on the tip of the Gothic arch, i.e. in centric condylar position. A custom-made electronic measuring articulator was used to determine the spatial distance between the condyles in centric relation, maximal occlusion and the newly determined neuromuscular position.</p><p><strong>Results: </strong>The reproducibility of the neuromuscular registrations was on average 0.52±0.16 mm (range 0.04-2.53 mm) with the right and left side averaged. The spatial distances of the condyles between maximal intercuspal position and neuromuscular positions were 0.88±0.30 mm (range 0.12-5.98 mm), again averaged for the right and left sides, whereas the ones between the centric condylar position and the neuromuscular positions were 0.83±0.27 mm (range 0.10-7.89 mm).</p><p><strong>Conclusions: </strong>The neuromuscular mandibular position is neither identical to maximal intercuspal position nor to centric relation. It can therefore be concluded, that the registration of the neuromuscular adduction field should not be recommended for prosthodontic restorations in dentate or edentulous patients.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-31"},"PeriodicalIF":0.0,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143495142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Accuracy of Intraoral Scanning Versus Analog Impression for Multiple Implant-supported Prostheses in Long Edentulous Spans: A Comparative Clinical Study. 口腔内扫描与模拟印模在长无牙段多种植体支持修复中的准确性:一项比较临床研究。
The International journal of prosthodontics Pub Date : 2025-02-06 DOI: 10.11607/ijp.9180
Jie Ma, Binghua Zhang, Hao Song, Shuang Xu, Tiantian Chen, Tao Song
{"title":"Accuracy of Intraoral Scanning Versus Analog Impression for Multiple Implant-supported Prostheses in Long Edentulous Spans: A Comparative Clinical Study.","authors":"Jie Ma, Binghua Zhang, Hao Song, Shuang Xu, Tiantian Chen, Tao Song","doi":"10.11607/ijp.9180","DOIUrl":"https://doi.org/10.11607/ijp.9180","url":null,"abstract":"<p><strong>Purpose: </strong>Clinical scientific evidence of the accuracy of intraoral scanning (IOS) impressions for multiple implant-supported prostheses in partially edentulous arches is limited. This in vivo study aimed to evaluate the accuracy of IOS impressions for multiple implants by comparing them with analog impressions.</p><p><strong>Materials and methods: </strong>Patients with three adjacent implants in partially edentulous arches were recruited. For each arch, IOS impressions were obtained. Using the analog splinted impression technique, casts were obtained and scanned with an extraoral scanner. Using metrology software, the distances and angles between the implants were measured in all IOS and analog impression Standard Tessellation Language files. The absolute values of the distance and angular deviation were calculated and analyzed by comparing the two impression methods.</p><p><strong>Results: </strong>Thirty-four patients with partially edentulous arches were enrolled. The distance deviation between the IOS and analog impressions was 85.09 ± 58.73 µm, which was significantly lower than the clinically acceptable error (150 µm; P < .001). The angular deviation was 0.515 ± 0.426°. Distance deviations were significantly correlated with the interimplant distances (r = 0.384, P = .001) and angulations (r = 0.278, P =.022).</p><p><strong>Conclusions: </strong>For multiple implant-supported prostheses in partially edentulous arches, the distance deviation between the IOS and analog impression was within the clinicall acceptable range of misfit and increased with increasing interimplant distance and angulation.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-17"},"PeriodicalIF":0.0,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143367219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Effect of Build Angle on the Mechanical Properties of 3D- Printed Custom Tray Resin Specimens. 构建角度对3D打印定制托盘树脂样品力学性能的影响。
The International journal of prosthodontics Pub Date : 2025-02-06 DOI: 10.11607/ijp.9052
Fatma Uslu Kavrama, Nazli Aydin, Halit Yosuncigir, Yurdanur Ucar
{"title":"The Effect of Build Angle on the Mechanical Properties of 3D- Printed Custom Tray Resin Specimens.","authors":"Fatma Uslu Kavrama, Nazli Aydin, Halit Yosuncigir, Yurdanur Ucar","doi":"10.11607/ijp.9052","DOIUrl":"https://doi.org/10.11607/ijp.9052","url":null,"abstract":"<p><strong>Purpose: </strong>The aim of this in vitro study was to evaluate the effect of build angle on the flexural strength (FS), elastic modulus (E), and hardness (VH) of stereolithography (SLA) based 3D-printed custom tray resin.</p><p><strong>Material and methods: </strong>3D-printed specimens with dimensions of 65.0 mm × 10.0 mm × 3.3 mm ± 0.2 mm were manufactured with different build angles (90, 120, 135, 150, 180 degrees) using custom tray resin. For preparing the specimens in the control groups, the autopolymerizing (AP) resin and the ultraviolet polymerizing (UV) resin were used. FS and E were determined by a three-point bending test, and hardness was evaluated with the VH test. Fracture surfaces were evaluated with scanning electron microscopy (SEM). Statistical analysis of the data was made using a one way ANOVA followed by the Dunnett T3 test.</p><p><strong>Results: </strong>Considering all parameters, the UV group was statistically significantly lower than the other groups. The mean E value of the 90D group was statistically significantly different than those of the 150D group (P=.000) and the 180D group (P=.002). The mean E value of the 120D group was statistically significantly different than those of the 150D group (P=.003) and the 180D group (P=.013). The AP group showed a higher mean VH number (20.20 ±2.08), and the difference was statistically significant compared to the 3D-printed groups (P<.005).</p><p><strong>Conclusions: </strong>Considering its mechanical properties, it was appropriate to arrange the build angles to different degrees when manufacturing reliable custom trays using SLA. 3D printed custom tray production method was a more standard method compared to AP and UV.</p>","PeriodicalId":94232,"journal":{"name":"The International journal of prosthodontics","volume":"0 0","pages":"1-22"},"PeriodicalIF":0.0,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143367225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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