Explore the vast range of titles available.

The dimensional accuracy of digitally processed inlays is often questioned because of inherent manufacturing inconsistencies associated with computer-aided design and manufacturing (CAD/CAM). This study aimed to compare the absolute marginal discrepancy (AMD), marginal gap (MG), internal gap (IG), and overall discrepancy (OD) of three-dimensional (3D) printed, milled and conventional inlays. Forty resin dies were 3D-printed from a class II mesiococclusodistal preparation on a typodont and randomly distributed into four groups of 10 each. Optical impressions were taken for three groups to fabricate CAD/CAM inlays: Group PVC, 3D printed VarseoSmile Crownplus; Group PVT, 3D printed VarseoSmile TriniQ; and Group MVE, milled using Vita Enamic. For Group CGP (control), CGP was conventionally fabricated using Gradia Plus. These inlays were stabilized on dies and subjected to cone‒beam computed tomography to measure discrepancies in mesiodistal and buccolingual sectional images. All the discrepancies differed significantly among the groups (one-way ANOVA, P  > 0.05). The mean OD was significantly greater in the MVE than in the PVT and CGP; the mean AMD and MG were significantly greater in the PVC than in the PVT (Tukey test, P  > 0.05). Compared with the other groups, the 3D-printed inlays, especially the VarseoSmile TriniQ, presented a closer marginal and internal fit.

Background The cementation of indirect restorations is a critical step influencing their long-term clinical success. While dual-cure resin cements are widely used, injectable resin composites have emerged as promising alternatives, offering improved handling, high filler content, and esthetic stability. However, their clinical performance as luting agents for indirect restorations remains insufficiently explored. This trial assessed the clinical performance of indirect hybrid ceramic onlay restorations cemented with injectable resin composite versus dual-cure resin cement over 18 months. Materials and methods A total of 28 participants were randomly assigned to two groups ( n  = 14) based on the cementation protocol. The intervention group received onlays cemented with injectable resin composite (BEAUTIFIL Flow Plus X F03, Shofu Dental Corporation), while the control group received dual-cure resin cement (BeautiCem SA, Shofu Dental Corporation). Standardized procedures were followed for cavity preparation, immediate dentin sealing, cavity optimization, impression-taking, onlay fabrication (SHOFU Block HC, Shofu Dental Corporation), and cementation. Restorations were evaluated at baseline, 6, 12, and 18 months using the modified USPHS criteria. Data were statistically analyzed with significance set at P  ≤ 0.05. Intergroup comparisons were assessed with Chi-squared test, while intragroup comparisons were assessed with Cochran’s Q test. Kaplan–Meier analysis and the log-rank test were used to evaluate survival rates. Results Inter- and intragroup comparisons revealed no significant differences between the two groups for most outcomes ( P  > 0.05). However, at 18 months, dual-cure resin cement exhibited significantly higher marginal discoloration than injectable resin composite ( P  = 0.038). Within the dual-cure resin cement group, a significant decline in alpha scores for marginal discoloration was observed from baseline to 18 months ( P  = 0.007). While no restorations failed (Charlie score), Kaplan–Meier survival analysis and the log-rank test demonstrated a statistically significant difference between the two groups ( P  = 0.029). Conclusions After 18 months, injectable resin composite demonstrated acceptable and comparable clinical performance to dual-cure resin cement, with the added benefit of reduced marginal discoloration. Clinical relevance Injectable resin composites offer a viable alternative to dual-cure resin cements for luting indirect restorations with enhanced esthetic outcomes. Trial Registration https://clinicaltrials.gov/ , (NCT05954156), 20-07-2023.

PurposeTo review all case series of refractive corneal inlay implantation: Flexivue (Presbia, Netherlands), Invue (BioVision, Brügg, Switzerland) and Icolens (Neoptics, Hünenberg, Switzerland) performed in presbyopia patients and to evaluate the reported visual outcomes. In addition, our aim is to provide assessment for complications and to report the satisfaction rates. MethodsPubMed, Web of Science and Scopus databases were consulted using “refractive corneal inlay”, “Flexivue Inlay”, “Invue Inlay” and “Icolens inlay” as keywords. 147 articles were found, and they were assessed considering the inclusion and exclusion criteria. After filtering, this systemic review included ten articles, published between 2011 and 2020.Results308 eyes from 308 participants were enrolled in this systematic review. Mean maximum follow-up was 13.9 months. Nine of the ten case series included used femtosecond laser for the corneal pocket creation. Mean pocket depth was 293.75 µm. 77.5% of the eyes reported a postoperative uncorrected near visual acuity of 20/32 or better, and 19.20% of the inlay-implanted eyes achieved an uncorrected distance visual acuity of 20/20 or better. The most prominent complications were halos, pain, photophobia, and poor distance visual acuity. 27 eyes (8.7%) had to be explanted due to complications, such as near-distance spectacle dependence or blurred distance vision.ConclusionRefractive corneal inlay outcomes demonstrated high efficacy, safety, and satisfaction rates. Furthermore, it is a reversible technique. However, the findings must be viewed with caution due potential conflict of interest. Further research with higher sample size is needed to validate these findings.

Objective: The accuracy of marginal fit is essential for the longevity of metal restorations because any gap increases biological and mechanical risks. Digital fabrication methods, such as milling and 3D printing, were introduced to reduce the errors seen in conventional casting. This study compares the marginal gaps of copings made by the three techniques to identify the most accurate method within clinical limits. Materials and Methods: Thirty copings, ten per technique, were made on a standardized maxillary molar preparation. Vertical marginal gaps were measured at the buccal and lingual reference points under a stereo microscope at ×40 using image analysis software. Results: Mean marginal gap was 36.05 μm for printed Co-Cr, 45.15 μm for milled Ti, and 67.04 μm for cast Co-Cr. Differences were significant at p ≤ 0.05. Conclusion: 3D printing produced the smallest gaps, followed by milling, then casting. All means were within a commonly accepted clinical limit of 100 μm. Clinical significance, digital workflows can reduce inaccuracy and support restoration longevity.

Objective The aim of this study was to evaluate the trueness of 3D-printed dental inlays fabricated using different permanent dental resins and subjected to distinct postcuring times. Materials and methods A total of 180 inlay specimens were fabricated and divided into nine groups of 20 specimens each. The inlays were first designed using 3D design software (Ansys SpaceClaim) and then transferred to a 3D printer. Using LCD technology, 60 inlays were fabricated from Senertek P-CrownV3 Ceramic (Senertek) resin, another 60 inlays from VarseoSmile Crown Plus (Bego) resin and the final 60 inlays from Saremco Print Crowntec (Crowntec) resin. Each of these three groups was divided into three equally sized subgroups ( n  = 20) cured with 2,000, 4,000 and 6,000 flashes, respectively, using the Otoflash G171 device (NK Optik, Germany). Then, the specimens were scanned and digitised using an intraoral digital scanner, and their trueness was evaluated by superimposing the digital measurements on the reference design and calculating their root mean squares (RMSs) and total overlap ratios (TORs). MANOVA was used to compare the measurements, and Tukey’s test was utilised for the post hoc analysis. Results Significant differences in trueness were observed among the inlays fabricated with different resin types ( p  < 0.001). The Crowntec resin had the lowest RMS (0.08 ± 0.018 mm) and the highest TOR (94.59 ± 2.49%), indicating the best trueness, while Senertek had the highest RMS (0.114 ± 0.017 mm) and the lowest TOR (80.15 ± 5.95%), reflecting the lowest trueness. The postcuring time also significantly affected the trueness of the inlays. The 6,000-flashes group had the lowest RMS (0.095 ± 0.02 mm), and the 4000-flashes group had the highest TOR (89.81 ± 0.5%). The interaction between the resin type and the postcuring time was significant for the TOR ( p  = 0.01), suggesting that trueness improvements are material dependent. Conclusion Both the resin type and the postcuring time significantly influenced the trueness of the 3D-printed dental inlay restorations. The Crowntec resin consistently exhibited superior trueness, and the Senertek resin demonstrated the lowest trueness. The optimal postcuring time varied by material, but 4,000 flashes generally provided favourable trueness outcomes. These findings highlight the importance of selecting an appropriate resin and optimising the postcuring parameters to enhance the trueness of dental inlays, potentially improving their clinical fit and longevity. Clinical relevance Appropriate resin selection and adherence to optimised postcuring protocols are essential for achieving clinically true 3D-printed restorations, ultimately improving their adaptations in dental applications.

Objectives The survival rate of indirect partial adhesive restorations on vital versus endodontically treated teeth is still controversial. The hypothesis is that there may be a difference in the survival rate of partial adhesive restorations performed on non-vital teeth compared to vital teeth. Materials and methods This systematic review was conducted following the PRISMA guidelines. The considered clinical studies investigated the outcomes of adhesive inlays, onlays, and overlays conducted over the past 40 years, focusing on Kaplan–Meier survival curves to calculate the hazard ratio (primary objective) and the survival rate (secondary objective) between vital and non-vital teeth. The risk of bias was assessed using the Newcastle–Ottawa Scale. Studies included in the review were identified through bibliographic research on electronic databases (“PubMed,” “Scopus,” “Cochrane Central Register of Controlled Trial,” and “Embase”). The K agreement between the two screening reviewers was evaluated. Results A total of 55,793 records were identified on PubMed, Scopus, and other bibliographic sources, and after the application of the eligibility and inclusion criteria, eight articles were included for qualitative analysis and six for quantitative analysis. The meta-analysis of the primary and secondary outcomes demonstrated that hazard ratios (HR = 8.41, 95% CI: [4.50, 15.72]) and survival rates (OR = 3.24, 95% CI: [1.76, 5.82]) seemed more favorable for indirect partial adhesive restorations on vital teeth than for those on endodontically treated teeth. Conclusions Within the limits of this study, these findings suggest that the risk of failure of indirect partial adhesive restorations on endodontically treated teeth is higher than on vital teeth. Clinical relevance The use of partial adhesive restorations on vital and endodontically treated teeth showed different long-term clinical outcomes.

The medical records of 438 patients who underwent myringoplasty followed up for a minimum of one year in the period of 1980 and 2015 were revised. Examination under otomicroscope was done of the ear to be operated. This was carried out with a speculum under the operating microscope to be reliably asses the tympanic membrane, site of perforation, to rule out any other pathology and assess the status of ossicular chain. All the patients submitted primary myringoplasty surgery were operated under postauricular, endaural and transcanal approach with overlay, underlay and inlay methods. In the study the patients were divided into three groups depending upon the technique utilized to repair the tympanic membrane. When we compared overlay technique group with underlay technique group, it was observed that overlay technique was no statistically significant difference between these three groups in term of age wise distribution, gender wise distribution, duration of disease and cause of disease, due to matching at the time of selection. In this study the outcome in terms of graft uptake rate was slight better in the overlay technique (94%) as compared to the underlay technique (86.2%), though the difference was statistically insignificant, P>0.05. Patients selection may have had a role in the high success rate in the present study as patients presenting with middle ear pathology were excluded. The complications rate in the present study was quite low, no case in inlay group, three cases of graft lateralization in underlay group, and 19 cases in overlay group. In this study, better results were achieved with overlay technique may probably be due to less surgical manipulation and faster healing process.

This book is dedicated to the fundamentals of esthetic restorations. Many dentists and students often ask for a coherent, clinical, and applied resource after my lectures or teaching. Therefore, the focus of this edition is to provide students, teachers, and practicing colleagues with a comprehensive and evidence-based resource for esthetic restorations and its related disciplines. In this edition, the patient is examined to detect any caries, and the possible pulp treatments are evaluated and the carious posterior teeth and occlusal abrasions treated. Moreover, the principles and applications of glass ionomer and various types of light cure equipment are explained. Although the techniques, materials, and treatment options continue to evolve, an understanding of these principles and the ability to apply them are critical to providing the outstanding esthetic dental treatment expected by patients. The primary purpose of this book is to improve the clinical practice of general dentists carrying out restorative and esthetic treatments. It is, in effect, a summary of the author's own experience, studies, and therapeutic findings, intended as a topic-by-topic reference guide for use by other dentists seeking to provide the best treatment for their patients.

Background The accuracy of intraoral scanning plays a crucial role in the workflow of computer-assisted design/computer-assisted manufacturing. However, data regarding scanning accuracy for inlay preparation designs are lacking. The purpose of this in vitro study was to evaluate the influence of the depth of the occlusal cavity and width of the gingival floor of the proximal box on the trueness and precision of intraoral scans for inlay restoration. Methods Artificial teeth were used in this study. Four types of preparations for mesio-occlusal inlay were performed on each #36 artificial tooth depending on two different depths of the occlusal cavity (1 mm and 2 mm) and widths of the gingival floor of the proximal box (1.5 mm and 2.5 mm). Artificial teeth were scanned 10 times each with Cerec Primescan AC, and another scan was performed subsequently with a laboratory scanner as a reference ( n  = 10). Standard tessellation language files were analyzed using a three-dimensional analysis software program. Experimental data were analyzed using two-way analysis of variance and the Bonferroni multiple comparison test. Results The narrow shallow group had significantly higher deviation values for trueness than the wide deep group ( p  < 0.05). The wide deep group had the lowest average deviation value for trueness and there was no significant difference between the narrow deep and wide shallow groups ( p  > 0.05). For the mean maximum positive deviation, the wide groups had significantly lower values than the narrow groups ( p  < 0.05). Trueness was affected by both the width and depth( p  < 0.05), whereas the mean maximum positive deviation was affected by the width ( p  < 0.05). The mean maximum negative deviation was affected by all three factors ( p  < 0.05). Precision was affected by the depth and the interaction between the depth of the occlusal cavity and width of the gingival floor ( p  < 0.05). Conclusions The design of different inlay cavity configurations affected the accuracy of the digital intraoral scanner. The highest average deviation for trueness was observed in the narrow shallow group and the lowest in the wide deep group. With regard to precision, the narrow shallow group showed the lowest average deviation, and the narrow deep group showed highest value.