Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry最新文献

{"title":"Peri-implant tissue definition and registration with a 3D-printed emergence profile former on titanium stock healing abutment: A dental technique and clinical report.","authors":"Francisco X Azpiazu-Flores, Siyootagrai Tisama, Ahmed Elfana, Chao-Chieh Yang, Dean Morton, Wei-Shao Lin","doi":"10.1111/jopr.14011","DOIUrl":"https://doi.org/10.1111/jopr.14011","url":null,"abstract":"<p><p>Recent focus has shifted toward refining the soft tissue emergence profile to enhance aesthetics, support peri-implant health, and ensure long-term success. Traditionally, titanium stock healing abutments or chairside-customized abutments were used to shape peri-implant tissues and develop the emergence profile for implant-supported prostheses. However, advancements in digital dentistry now allow for more precise customization and increased treatment efficiency. This case report introduces a novel approach to shape the peri-implant tissues using a 3D-printed emergence profile former retained by a titanium stock healing abutment. The 3D-printed emergence profile former reduced chairside time and simplified registering the gingival tissue contours and implant position with an intraoral scanner. Following removal, the peri-implant soft tissues displayed enhanced volume buccally, creating an aesthetically pleasing restoration in a site with a notable horizontal tissue deficiency.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142933231","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 impact of retraction cords on the gingival margin level: A randomized clinical trial","authors":"Majdoleen Fouad DDS, MSc,&nbsp;Ahmad Abel Aziz Mahmoud BDS, PhD,&nbsp;Mohammad Al-Rabab'ah BDS, MSc, PhD,&nbsp;Najla Kasabreh DDS, MS","doi":"10.1111/jopr.14015","DOIUrl":"10.1111/jopr.14015","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>To examine the impact of placing plain and impregnated retraction cords for two different retraction times on the postoperative gingival margin level and periodontal health.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>A total of 40 endodontically treated mandibular first molars were selected and randomly allocated into four groups (<i>n</i> = 10/group); A: plain retraction cord for 10 min, B: plain retraction cord, 20 min, C: impregnated (25% aluminum chloride (AlCl₃) retraction cord, 10 min, D: impregnated retraction cord (25% AlCl₃), 20 min. Intraoral digital scans were acquired, and periodontal parameters (Plaque index [PI], Bleeding on probing [BOP], and probing depth [PD]) were assessed at baseline, 7 days, and 28 days after retraction. The digital scans were superimposed to measure the change in the mid-buccal gingival margin level. Statistical differences between groups at the threetime points were tested using one-way ANOVA and Chi-square tests (<i>α</i> = 0.05).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>AlCl₃-impregnated retraction cord for 20 min resulted in a statistically significant change in gingival margin level than limiting its application to 10 min or using plain cords at the three-time points (<i>p</i> &lt; 0.05) with 88 ± 4 µm gingival recession after 28 days. The assessed periodontal parameters only showed a significant difference between groups in BOP after 7 days of retraction (<i>p</i> = 0.0009); however, all parameters returned to normal after 28 days with no significant difference between groups (<i>p</i> &gt; 0.05).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>To avoid transient gingival inflammation or permanent gingival recession, no matter how small, the retraction time of AlCl₃-impregnated cords should be limited to no more than 10 min.</p>\u0000 </section>\u0000 </div>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":"34 2","pages":"139-148"},"PeriodicalIF":3.4,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143191091","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":"Automated design prediction for definitive obturator prostheses: A case-based reasoning study.","authors":"Islam E Ali, Mariko Hattori, Yuka Sumita, Noriyuki Wakabayashi","doi":"10.1111/jopr.13994","DOIUrl":"https://doi.org/10.1111/jopr.13994","url":null,"abstract":"<p><strong>Purpose: </strong>This study aims to evaluate the effectiveness of a case-based reasoning (CBR) system in predicting the design of definitive obturator prostheses for maxillectomy patients.</p><p><strong>Materials and methods: </strong>Data from 209 maxillectomy cases, including extraoral images of obturator prostheses and occlusal images of maxillectomy defects, were collected from Institute of Science Tokyo Hospital. These cases were organized into a structured database using Python's pandas library. The CBR system was designed to match new cases with similar historical cases based on specific attributes such as aramany class, abutment details, defect extension, and oronasal connection size. The system's performance was evaluated by clinicians who assessed the accuracy of prosthesis designs generated for 33 test cases.</p><p><strong>Results: </strong>A correlation analysis demonstrated a significant positive relationship (ρ = 0.84, p < 0.0001) between the CBR system's confidence scores and the number of correct prosthesis designs identified by clinicians. The median precision at five cases was 0.8, indicating that the system effectively retrieved relevant designs for new cases.</p><p><strong>Conclusions: </strong>The study shows that the developed CBR system effectively predicts the design of obturator prostheses for maxillectomy patients. Clinically, the system is expected to reduce clinician workload, simplify the design process, and enhance patient engagement by providing prompt insights into their final prosthetic design.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142928538","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":"A systematic review on patient perceptions and clinician-reported outcomes when comparing digital and analog workflows for complete dentures.","authors":"Amira Fouda, James Tonogai, Peter McDermott, Daniel Wang, Cecilia S Dong","doi":"10.1111/jopr.13999","DOIUrl":"https://doi.org/10.1111/jopr.13999","url":null,"abstract":"<p><strong>Purpose: </strong>To compare digitally fabricated complete dentures to conventionally fabricated dentures using patient- and clinician-reported outcome measures.</p><p><strong>Methods: </strong>This review was structured according to PRISMA guidelines with the protocol registered in the PROSPERO database (CRD42024526069). An electronic search of the databases with a defined search strategy was completed within PubMed/MEDLINE and Web of Science from January 2000 to March 2024. Grey literature and article references were searched. Articles were screened by title and abstract, and the remaining articles were screened by full-text review. Articles accepted for inclusion were subjected to a risk-of-bias assessment using Cochrane Collaboration tools (RoB 2 and ROBINS-I).</p><p><strong>Results: </strong>From an initial pool of 704 articles, 15 studies met the selection criteria, of which the majority were published within the past 3 years. Within the included studies, there was inconsistency in the assessment methods of patient- and clinician-reported outcomes, making it challenging to draw definitive conclusions. Generally, digital dentures had superior cost-effectiveness and prosthesis fabrication time. Patient satisfaction and denture quality were not consistently improved with digital technology.</p><p><strong>Conclusions: </strong>Studies showed indications of patient satisfaction with digital and conventional dentures. Digital technology may enhance clinical workflows. A trend emerged that milled dentures performed better than printed dentures. Clinicians adopting digital technology into removable prosthodontics may have a learning curve to overcome, and they should consider the patient-clinician relationship in addition to clinical outcomes to achieve patient satisfaction. Additional studies with standardized tools for assessing patient satisfaction are required to enable meaningful comparisons between digital and conventional workflows.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142903898","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":"Annual report of the American Board of Prosthodontics","authors":"Heather J. Conrad DMD, MS","doi":"10.1111/jopr.14010","DOIUrl":"10.1111/jopr.14010","url":null,"abstract":"","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":"34 1","pages":"3-4"},"PeriodicalIF":3.4,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873077","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 effect of fabrication procedures and thermomechanical loading on the structural properties of screw-retained metal-ceramic implant restorations: An in vitro study.","authors":"Hosein Mohebbi, Sareh Habibzadeh, Marzieh Alikhasi, Seyed Ali Mosaddad, Safoura Ghodsi","doi":"10.1111/jopr.14008","DOIUrl":"https://doi.org/10.1111/jopr.14008","url":null,"abstract":"<p><strong>Purpose: </strong>Metal-ceramic screw-retained implant restorations persist as a fundamental choice in specific clinical scenarios. Little is known about the effects of fabrication steps and aging on their structural properties. This study aimed to investigate how laboratory fabrication procedures and thermomechanical loading affect the structural properties of screw-retained metal-ceramic implant restorations.</p><p><strong>Materials and methods: </strong>Ten screw-retained metal-ceramic restorations were conventionally cast using UCLA chromium-cobalt overcast abutments. After 500 cycles of thermocycling and 500,000 cycles of mechanical loading, changes in connection dimensions and rotational freedom (RF) were measured and compared at various fabrication steps and post-thermomechanical loading. A generalized estimating equations (GEE) model was employed to analyze trends across the studied time points within the fabrication stage and after thermomechanical loading, with LSD post-hoc tests applied for pairwise comparisons. The level of significance was set at α = 0.05.</p><p><strong>Results: </strong>Significant changes were observed across the analyzed time points: the average hexagonal side length (L) decreased (p < 0.001), and the average hexagonal angle deformation (P) increased, with notable differences observed in most comparisons between different fabrication steps (p < 0.001). Short (T1) and long (T2) diagonals of the hexagon showed downward trends (p < 0.001), while concentricity (O) and RF increased (p < 0.001), except between porcelain firing and loading steps for RF (p = 0.637). Casting had the greatest impact on variations in O (93.33%), T1 (88.88%), and T2 (45%), while porcelain firing significantly affected L (71.42%), P (71.42%), with the greatest effect on RF (75.32%).</p><p><strong>Conclusions: </strong>The fabrication processes and simulated clinical use adversely impacted the structural integrity and RF of abutments in screw-retained chromium-cobalt overcast implant restorations.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142856015","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":"Performance and durability of additively and subtractively manufactured resin-based onlay restorations after thermomechanical aging.","authors":"Mehmet Esad Güven, Mustafa Borga Donmez, Ayyüce Nur Tezcan, Hyung-In Yoon, Burak Yilmaz, Gülce Çakmak","doi":"10.1111/jopr.14005","DOIUrl":"https://doi.org/10.1111/jopr.14005","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the effect of material type on dimensional stability, occlusal surface wear, fracture resistance, and failure behavior of resin-based onlay restorations.</p><p><strong>Material and methods: </strong>A mandibular right first molar typodont was prepared and digitized using an intraoral scanner to virtually design an onlay restoration with the minimum occlusal thickness of 1.5 mm. Resin-based onlay restorations (n = 15 per group) were fabricated either additively from 2 different resins indicated either for definitive or interim use or subtractively with a composite resin. After cementing onlays to corresponding dies, each of them was digitized before and after thermomechanical aging (B-STL and A-STL), and then subjected to load-to-failure test to evaluate fracture resistance. The B-STL and A-STL of each onlay were also compared to assess the dimensional stability and occlusal surface wear. One-way analysis of variance and Tukey honestly significant difference tests were used to evaluate dimensional stability, occlusal surface wear, and fracture resistance. The chi-square test was used to evaluate the Weibull modulus and characteristic strength among the groups (α = 0.05).</p><p><strong>Results: </strong>Material type affected investigated outcomes (p < 0.001). The additively manufactured resin indicated for definitive use led to the highest external surface deviations and the additively manufactured resin indicated for interim use led to the highest mesiodistal width deviations (p ≤ 0.033). The onlays fabricated from the additively manufactured resin indicated for definitive use had the highest occlusal surface wear, while those in composite resin had the lowest (p ≤ 0.006). The composite resin onlays had the highest fracture resistance values and reliability (p ≤ 0.035).</p><p><strong>Conclusions: </strong>Tested subtractively manufactured composite resin had the lowest occlusal surface wear with the highest fracture resistance and reliability. Additively manufactured resins had lower dimensional stability, while tested resin for additively manufactured definitive restorations had the highest occlusal surface wear.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142856009","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 denture base resins: Glazing as an alternative to improve surface, mechanical, and microbiological properties.","authors":"Ana Larisse Carneiro Pereira, João Pedro Dos Santos Silva, Manassés Tercio Vieira Grangeiro, Annie Karoline Bezerra de Medeiros, Marcos Antonio Bottino, Valentim A R Barão, Adriana da Fonte Porto Carreiro","doi":"10.1111/jopr.14001","DOIUrl":"https://doi.org/10.1111/jopr.14001","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the impact of glazing denture base resins (heat-polymerized and 3D-printed) on surface, mechanical, and microbiological properties.</p><p><strong>Materials and methods: </strong>Discs (10 × 3 mm) and bars (64 × 10 × 3.3 ± 0.2 mm) were manufactured using heat-polymerized denture base resin (CT) and 3D-printed denture base resin (Yller [YL], Prizma [PZ] and PrintaX [PX]). These were divided into two groups: unglazed and glazed. Surface roughness (Ra), wettability (contact angle), brightness (GU), and topography (via scanning electron microscopy) were assessed, along with microbiological analysis of dual-species biofilms (Streptococcus mitis and Candida albicans) and Knoop microhardness on discs (n = 10). Flexural strength testing was conducted separately on bars (n = 20). Half of the specimens subjected to surface and mechanical characterizations were thermocycled (10,000 cycles). Mann-Whitney test (p < 0.05) and simple and multiple linear regression analysis (p < 0.20) were employed to evaluate the impact of glazing on denture base resins.</p><p><strong>Results: </strong>The application of glaze reduced roughness by 0.33 µm and water contact angle by 8.47º, while increasing brightness by 21.30 units (p < 0.001) for 3D-printed resins compared to CT. After thermal cycling, roughness and wettability increased, while brightness decreased (p < 0.05). The glaze also increased hardness, with no adverse effects from thermal cycling (p < 0.001), and enhanced flexural strength for PZ compared to CT (p < 0.001). Additionally, C. albicans colonization decreased by 7.79 log CFU/mL in mixed biofilms for 3D-printed resins compared to CT (p < 0.05).</p><p><strong>Conclusions: </strong>The application of glaze resulted in smoother, brighter, and harder surfaces for the 3D-printed resins, while also reducing biofilm colonization.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142840036","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":"Enhancing artificial intelligence-driven sleep apnea diagnosis: The critical importance of input signal proficiency with a focus on mandibular jaw movements.","authors":"Jean-Benoit Martinot, Nhat-Nam Le-Dong, Atul Malhotra, Jean-Louis Pépin","doi":"10.1111/jopr.14003","DOIUrl":"10.1111/jopr.14003","url":null,"abstract":"<p><strong>Purpose: </strong>This review aims to highlight the pivotal role of the mandibular jaw movement (MJM) signal in advancing artificial intelligence (AI)-powered technologies for diagnosing obstructive sleep apnea (OSA).</p><p><strong>Methods: </strong>A scoping review was conducted to evaluate various aspects of the MJM signal and their contribution to improving signal proficiency for users.</p><p><strong>Results: </strong>The comprehensive literature analysis is structured into four key sections, each addressing factors essential to signal proficiency. These factors include (1) the comprehensiveness of research, development, and application of MJM-based technology; (2) the physiological significance of the MJM signal for various clinical tasks; (3) the technical transparency; and (4) the interpretability of the MJM signal. Comparisons with the photoplethysmography (PPG) signal are made where applicable.</p><p><strong>Conclusions: </strong>Proficiency in biosignal interpretation is essential for the success of AI-driven diagnostic tools and for maximizing the clinical benefits through enhanced physiological insight. Through rigorous research ensuring an enhanced understanding of the signal and its extensive validation, the MJM signal sets a new benchmark for the development of AI-driven diagnostic solutions in OSA diagnosis.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142830651","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 three-dimensionality of the \"gummy smile\".","authors":"Rebecca Bockow","doi":"10.1111/jopr.13996","DOIUrl":"https://doi.org/10.1111/jopr.13996","url":null,"abstract":"<p><p>The \"gummy smile\" is a complex developmental issue that requires a three-dimensional approach to diagnosis and treatment. This article explores the multifaceted nature of the gummy smile, tracing its origins to early childhood growth patterns and breathing dysfunctions. It emphasizes the importance of understanding the interplay between skeletal development, soft tissue function, and breathing modalities in the formation of craniofacial structures. The article discusses how early mouth breathing and tongue dysfunction can lead to maladaptive skeletal growth, resulting in vertical maxillary excess and other facial imbalances. It highlights the critical role of nasal breathing and proper tongue posture in promoting healthy craniofacial development. Treatment options are presented for both growing children and adults, ranging from preventive measures to surgical interventions. For children, the focus is on early intervention to redirect growth patterns, while for adults, comprehensive treatment may include orthognathic surgery to correct established skeletal discrepancies. By providing an in-depth analysis of the three-dimensional aspects of the gummy smile, this article aims to equip interdisciplinary teams with the knowledge needed for accurate diagnosis and effective treatment planning. It underscores the importance of addressing underlying causes rather than merely treating symptoms, promoting a holistic approach to patient care in aesthetic dentistry.</p>","PeriodicalId":49152,"journal":{"name":"Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2024-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142829970","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}