Journal of Esthetic and Restorative Dentistry最新文献

{"title":"Marginal and Internal Adaptation of Crowns Fabricated on Models From Digital and Conventional Impressions: An In Vitro Study.","authors":"Mohanad Shomal, Şafak Külünk, Seniha Kısakürek","doi":"10.1111/jerd.70255","DOIUrl":"https://doi.org/10.1111/jerd.70255","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate the marginal and internal adaptation of monolithic crowns fabricated from lithium disilicate (LD), zirconia (Zr), and fiber-reinforced composite (FRC) using five different model types derived from digital and conventional impressions.</p><p><strong>Materials and methods: </strong>A maxillary first molar was prepared on a phantom model for full-coverage crown restoration. Conventional and digital impressions were used to produce five types of working models: scanned impression STL (CS), plaster (CP), 3D-printed resin from scanned impressions (CR), direct digital STL (DS), and 3D-printed resin from digital impressions (DR). A total of 150 crowns (n = 10 per group) were fabricated using CAD/CAM. The marginal and internal adaptation were assessed using the silicone replica technique and analyzed under a light microscope (×40). Data were statistically analyzed using two-way MANOVA and ANOVA (α = 0.05).</p><p><strong>Results: </strong>Both model type and restorative material significantly affected adaptation values (p < 0.05). The best adaptation was observed in LD crowns fabricated on 3D-printed resin models derived from digital impressions. In general, crowns fabricated on digitally derived 3D-printed resin models demonstrated lower gap values than those fabricated on plaster and STL models. FRC crowns on plaster models exhibited the highest gap values. All measured gap values remained within clinically acceptable limits (< 120 μm).</p><p><strong>Conclusions: </strong>Crowns fabricated on 3D-printed resin models derived from digital impressions showed the most favorable adaptation among tested groups. Both model type and restorative material significantly influenced restoration fit. Based on the findings of this in vitro study, digital workflows incorporating 3D-printed resin models may be considered reliable alternatives to conventional plaster models in CAD/CAM systems.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148812254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Translucency Changes of Ceramic Veneers After Aging When Cemented on Substrates With Different Saturation: Effect of Ceramic Translucency and Resin Cement Shade.","authors":"Samara Franco da Silva, Camila Pontes Custódio, Paulo Francisco Cesar, Carlos Eduardo Francci","doi":"10.1111/jerd.70258","DOIUrl":"https://doi.org/10.1111/jerd.70258","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate the effect of ceramic translucency and resin cement shade on the translucency alteration after aging over different substrates.</p><p><strong>Methods: </strong>Sixty specimens were divided into 12 groups (n = 5) composed of lithium disilicate (IPS e.max CAD, Ivoclar Vivadent) in three translucencies (HT, MT, LT). The 0.5 mm thick specimens were cemented with Variolink Esthetic LC (Ivoclar Vivadent) Light+ (L+) and Neutral (N) over resin substrates A1 and A4. Samples were subjected to 20,000 aging thermocycles, alternating 55°C-5°C (30 s). Spectral reflectance was measured using a spectrophotometer (CM-3700d-Konica Minolta) at four intervals: before aging (t0) and after 10,000 (t10), 15,000 (t15), and 20,000 (t20) cycles. The Translucency Parameter (TP₀₀) and the ΔTP₀₀ were calculated. The thresholds for translucency perceptibility (TPT₀₀) and acceptability (TAT₀₀) were set at 0.62 and 2.62, respectively. Statistical analysis was performed using four-way repeated measures ANOVA and Tukey's post hoc test (α = 0.05).</p><p><strong>Results: </strong>Aging time, ceramic translucency, resin cement color and substrate saturation had a significant effect (p < 0.001) on TP₀₀. While TP₀₀ values declined across all groups, the lowest values for each measurement moment were consistently observed in the LTL+ groups [1.70 (t0) to 0.90 (t20)]. All ΔTP₀₀ values remained below the acceptability threshold (TAT = 2.62).</p><p><strong>Conclusion: </strong>Aging resulted in a generalized decrease in translucency across all groups, particularly over lighter substrates and when using chromatic resin cement. However, no clinically unacceptable alterations were observed.</p><p><strong>Clinical significance: </strong>Clinicians should select materials based on the balance between initial masking and long-term stability. For dark substrates, LT ceramics ensure consistent optical stability during aging, regardless of the resin cement shade. While combining translucent ceramics (HT/MT) with chromatic resin cements is an effective strategy for initial masking, clinicians must be aware that ceramic translucency is the primary factor controlling the final optical outcome over time.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148808728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In Vivo Assessment of Complete-Arch Implant Impressions Using a Clinical Seating Score: A Proof-of-Principle Case Report.","authors":"Francesco Mintrone, Fabio Ferri, Rostyslav Havryltsiv, Renaud Noharet, Stavros Pelekanos, Omar Shanableh","doi":"10.1111/jerd.70254","DOIUrl":"https://doi.org/10.1111/jerd.70254","url":null,"abstract":"<p><strong>Objective: </strong>Accurate transfer of implant positions is critical for achieving passive fit in complete-arch implant-supported prostheses. This clinical case report describes the comparison of eight implant-position acquisition workflows and their influence on the clinical seating of mandibular complete-arch frameworks. The Clinical Seating Score (CSS) was used to assess clinical seating and was compared with three-dimensional deviations.</p><p><strong>Methods: </strong>A patient receiving mandibular All-on-4 rehabilitation was treated with four implants placed using dynamic navigation. After a 3-month healing period, implant positions were recorded using eight workflows: conventional open-tray impression, intraoral scanning with conventional PEEK, reduced-height titanium, horizontal-arm, centrally oriented, and reverse scan bodies, intraoral photogrammetry, and extraoral photogrammetry. Eight titanium frameworks were fabricated using standardized CAD/CAM procedures and evaluated intraorally by a single experienced clinician using the CSS (0-6), which assessed framework rocking, screw-tightening tension, and a modified Sheffield test. A Clinical Acceptability Bonus (+1) was assigned when predefined clinical deliverability criteria were met. The framework with the highest CSS was used as the reference for three-dimensional deviation analysis.</p><p><strong>Results: </strong>Intraoral photogrammetry produced the highest CSS (6 + 1) and was used as the reference framework. Centrally oriented scan regions and extraoral photogrammetry also produced clinically acceptable seating. Conventional impressions and workflows using conventional PEEK, horizontal-arm, or reverse scan bodies showed greater variability in clinical seating. Deviations of approximately 50-60 μm were generally associated with clinically acceptable seating, whereas discrepancies exceeding approximately 70-80 μm were associated with lower CSS values. These observations suggest that the clinical effect of implant-position discrepancies may vary according to their spatial direction.</p><p><strong>Conclusions: </strong>Within the limitations of this single clinical case, the CSS provided a structured approach for assessing the clinical seating of complete-arch implant frameworks. Intraoral photogrammetry demonstrated the most favorable clinical seating, while other workflows showed variable outcomes. The proposed CSS and observed deviation ranges should be considered exploratory and require validation in larger clinical studies.</p><p><strong>Clinical significance: </strong>The CSS may potentially provide a simple and standardized chairside method for evaluating the passive seating of complete-arch implant frameworks. This approach may help clinicians identify clinically relevant misfits before delivery of the definitive prosthesis and support more predictable decision-making during framework verification.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148794122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 Adding Chitosan Nanoparticle Into Resin Infiltrant on the Color and Surface Microhardness of the Treated Enamel.","authors":"Soha Salavati, Sara Valizadeh, Ricardo M Carvalho, Safoura Ghodsi","doi":"10.1111/jerd.70230","DOIUrl":"https://doi.org/10.1111/jerd.70230","url":null,"abstract":"<p><strong>Objective: </strong>Chitosan is a naturally derived polysaccharide with antibacterial and bioactive properties. This study evaluated the effect of incorporating chitosan nanoparticles into a resin infiltrant on the color change, microhardness, wettability, and penetration depth of the treated white spot lesions.</p><p><strong>Materials and methods: </strong>Twenty-four bovine central incisors were prepared and baseline color and microhardness were measured. Artificial white spot lesions were created and specimens were randomly received either a resin infiltrant or a resin infiltrant containing 0.25 wt% chitosan nanoparticles. Color and microhardness were reassessed after infiltration, after 7 days of coffee immersion, and following secondary demineralization. Resin penetration depth was evaluated using scanning electron microscopy, and surface wettability was assessed by contact angle measurement. Data were analyzed using repeated-measures analysis of variance and independent t-tests (α = 0.05).</p><p><strong>Results: </strong>Chitosan incorporation significantly improved initial color of white spot lesions (p = 0.022); however, after coffee immersion, it caused greater color change (p = 0.003). Stepwise color changes did not differ significantly between the groups (p > 0.05). Although initial surface microhardness values were lower in the chitosan group, this group demonstrated a more stable hardness change after secondary demineralization (p < 0.001). Resin penetration depth and surface wettability were not significantly affected by chitosan addition (p > 0.05).</p><p><strong>Conclusions: </strong>Incorporation of chitosan nanoparticles improved initial masking ability and resistance to acid-induced hardness loss without compromising penetration depth or hydrophilicity of resin infiltrant over treated enamel. However, increased susceptibility to extrinsic staining highlights the need for further optimization to balance mechanical stability and long-term optical performance.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148794082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of a Fully Digital Workflow in Occlusal Reconstruction for Severely Worn Dentition.","authors":"Chuanfei Gao, Congcong Wei, Junxia Qiao, Kun Liu, Chunxiu Meng","doi":"10.1111/jerd.70247","DOIUrl":"https://doi.org/10.1111/jerd.70247","url":null,"abstract":"<p><strong>Objective: </strong>Occlusal reconstruction serves as a comprehensive and effective restorative strategy for managing severe attrition affecting the entire dentition, aiming to restore both function and esthetics. This case report aims to systematically present a complete digital occlusal reconstruction workflow to achieve precise operation and reproducibility of treatment outcomes.</p><p><strong>Clinical considerations: </strong>The complete set of severely worn dentition exhibits extensive tooth wear and structural loss, accompanied by a marked reduction in vertical dimension of occlusion (VDO), resulting in significant impairment of both esthetics and masticatory function. In this study, multimodal imaging and clinical data were integrated to construct a four-dimensional (4D) virtual patient model. Based on this model, occlusal relationships and prosthetic configurations were systematically designed and rigorously validated to restore both the patient's compromised aesthetic appearance and functional performance resulting from severe generalized tooth wear.</p><p><strong>Conclusions: </strong>This article reports a case of occlusal reconstruction assisted by digital oral technology. Through digitalized processes, precise treatment throughout the entire cycle from preoperative planning to intraoperative adjustment to postoperative verification has been achieved. This case demonstrates a potentially reproducible approach to occlusal reconstruction and may serve as a reference for managing similar complex conditions.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148794040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical Evaluation of CAD/CAM All-Ceramic Crowns: A Randomized Controlled Study Comparing Lithium Disilicate and Lithium Aluminosilicate.","authors":"Sinem Ok Tokaç, Kübra Yıldız Domaniç, Yılmaz Umut Aslan, Yasemin Özkan","doi":"10.1111/jerd.70244","DOIUrl":"https://doi.org/10.1111/jerd.70244","url":null,"abstract":"<p><strong>Objective: </strong>To compare the marginal and internal adaptation and to evaluate the clinical performance and patient satisfaction of CAD/CAM-fabricated all-ceramic crowns produced from lithium disilicate (LDS) and lithium disilicate-reinforced lithium aluminosilicate (LAS) over a 24-month follow-up period.</p><p><strong>Materials and methods: </strong>This randomized controlled, single-blinded clinical trial included 59 posterior single crowns placed in 37 patients. Twenty-nine crowns were fabricated from LDS (IPS e.max CAD; Ivoclar Vivadent), and 30 crowns were fabricated from LAS (n!ce Blocks; Institut Straumann AG). Marginal and internal adaptation were assessed before cementation using an in vivo silicone replica technique. Clinical performance was evaluated at baseline and after 6, 12, and 24 months using the modified United States Public Health Service (USPHS) criteria together with the Gingival Index (GI), Plaque Index (PI), and patient satisfaction assessed using a visual analogue scale (VAS). Statistical analyses were performed at a significance level of p < 0.05.</p><p><strong>Results: </strong>No statistically significant differences were observed between the LDS and LAS groups regarding marginal, rounded shoulder, or occlusal gap measurements (p > 0.05). A statistically significant difference was observed at the axial measurement site (p = 0.014), with the LDS group exhibiting significantly greater axial internal gap values than the LAS group. During the 24-month follow-up period, six restorations failed because of fracture or debonding, including three LDS and three LAS crowns, resulting in survival rates of 89.7% for LDS, 90.0% for LAS, and 89.8% overall. Gingival and plaque index scores remained low and stable throughout the observation period, and patient satisfaction remained high in both groups, with no statistically significant differences between materials (p > 0.05). All clinically surviving restorations received Alpha or Bravo scores according to the modified USPHS criteria.</p><p><strong>Conclusions: </strong>Within the limitations of this study, CAD/CAM-fabricated LDS and LAS crowns demonstrated comparable marginal adaptation, favorable clinical performance, and high patient satisfaction after 24 months of clinical service. The fully crystallized LAS ceramic appears to be a clinically acceptable and time-efficient alternative for posterior single-crown restorations. Nevertheless, long-term randomized clinical studies with larger sample sizes are required to confirm these findings.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148759802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Long-Term Esthetic-Functional Rehabilitation of Unilateral Cleft Lip and Palate With a Cross-Arch Monolithic Zirconia Fixed Dental Prosthesis Following Multidisciplinary Treatment: 5-Year Post-Prosthetic Follow-Up.","authors":"Gizem Altundal, Sinem Gümüş, Erol Kozanoğlu, Sevde Şirikçi Biberci, Asuman Deniz Gümrü Çelikel","doi":"10.1111/jerd.70250","DOIUrl":"https://doi.org/10.1111/jerd.70250","url":null,"abstract":"<p><strong>Objective: </strong>This case report describes the esthetic-functional rehabilitation of a patient with unilateral complete cleft lip and palate who was managed multidisciplinarily from 10 to 18 years of age, and reports the clinical outcome 5 years after definitive prosthetic rehabilitation, which was undertaken after late secondary alveolar bone grafting had yielded insufficient bone volume for implant placement.</p><p><strong>Clinical considerations: </strong>Phased orthodontic treatment from age 10-17 (slow maxillary expansion, fixed appliances, growth-coordinated space management) was followed by late secondary alveolar bone grafting at age 17, with concurrent extraction of the periodontally compromised lateral incisor. Although grafting achieved meaningful structural and soft-tissue reconstruction of the cleft zone, postoperative cone-beam computed tomography confirmed that the residual bone height and width remained insufficient for implant placement; after the patient declined further augmentation, a six-unit canine-to-canine monolithic zirconia fixed dental prosthesis incorporating a pink-ceramic-extended ovate pontic was adhesively cemented at age 18 with a 10-methacryloyloxydecyl dihydrogen phosphate-containing dual-cure resin cement, combined with continued dual orthodontic retention.</p><p><strong>Conclusion: </strong>Five years after definitive cementation, the restoration was clinically intact, with non-inflamed abutment periodontal conditions and maintenance of bilateral Class I occlusal relationships, transverse maxillary arch form, and esthetic outcome. Maintenance of the transverse arch form is most plausibly multifactorial and is attributed principally to the sustained orthodontic retention protocol rather than to the anterior restoration. This case illustrates the 5-year performance of cross-arch tooth-supported zirconia rehabilitation combined with prosthetic soft-tissue masking and continued orthodontic retention in a cleft patient in whom implant therapy was not feasible.</p><p><strong>Clinical significance: </strong>Cross-arch monolithic zirconia rehabilitation with a pink-ceramic-extended ovate pontic can provide an esthetic-functional pathway in cleft lip and palate patients in whom implant therapy is not feasible. In the present case, transverse maxillary arch form was maintained over 5 years under continued orthodontic retention, indicating that anterior-only prosthetic rehabilitation is compatible with preservation of arch form when retention is sustained.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148760485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effectiveness of Cellulose Nanofibers Addition to Soft Denture Lining Material on Candida albicans Adherence and Physical and Mechanical Properties.","authors":"Ammar Bahlool Alwan, Abdalbseet A Fatalla, Julfikar Haider","doi":"10.1111/jerd.70252","DOIUrl":"https://doi.org/10.1111/jerd.70252","url":null,"abstract":"<p><strong>Purpose: </strong>Current denture liner materials suffer from low tear strength, poor abrasion resistance, weak bond strength to denture material, and increasing risk of denture stomatitis due to adherence of Candida albicans. The aim of this study was to evaluate the effects of the addition of cellulose nanofibers (CNFs) to commercial soft denture liner material on the adherence of Candida albicans and physical and mechanical properties.</p><p><strong>Materials and methods: </strong>CNFs at concentrations of 0.0, 0.5, and 1.0 wt.% were incorporated into a soft liner material. Antifungal effects were assessed by quantifying the adherence of Candida albicans. The Shore A hardness, tensile strength, peel bond strength, and surface roughness tests were employed to assess the properties of the denture liner materials. Chemical interactions between the fibers and liner material were confirmed by Fourier Transform Infrared (FTIR) spectroscopy, and a Scanning Electron Microscope (SEM) was used to assess the CNFs particles and fractured surface morphology.</p><p><strong>Results: </strong>There was a statistically significant decrease in the adherence of Candida albicans in both experimental CNFs groups. FTIR spectroscopic analysis confirmed the existence of strong hydrogen bonding between the CNFs and the liner polymer matrix. The hardness, surface roughness, peel bond strength and tensile strength increased significantly due to the addition of CNFs, most notably at 0.5 wt.%.</p><p><strong>Conclusion: </strong>The addition of CNFs to the denture liner material improved mechanical properties and reduced Candida albicans adherence even with increased surface roughness above the established threshold of Ra ≥ 0.2 μm. The 0.5 wt.% CNFs concentration provided the most favorable balance of enhanced antifungal activity and mechanical properties, which suggests that CNFs may have altered surface interactions or adhesion sites and have the potential for clinical use in the mitigation of denture stomatitis.</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":4.6,"publicationDate":"2026-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148760633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Color and Translucency Stability of Additively Manufactured Interim Dental Restorative Materials: An In Vitro Aging Simulation Study","authors":"Fadi Bitar,&nbsp;Tariq Alsahafi,&nbsp;Jean-Pierre Albouy,&nbsp;Adalberto Vasconcellos,&nbsp;Taiseer A. Sulaiman","doi":"10.1111/jerd.70137","DOIUrl":"10.1111/jerd.70137","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Statement of Problem&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Additively manufactured interim restorative materials are being employed to meet contemporary esthetic demands, yet the longevity of their optical characteristics remains uncertain.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Objective&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;To assess the impact of material composition and manufacturing method on the optical stability of different additively manufactured interim restorative resins under in vitro aging methods and compare these properties to those of milled hybrid ceramic blocks.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Materials and Methods&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;A total of 240 disc-shaped specimens (diameter 10.00 ± 0.05 mm, thickness 1.10 ± 0.05 mm) were fabricated utilizing four additively manufactured resin-based and two milled hybrid ceramic blocks. Following standardized finishing and polishing processes, the specimens were aged in coffee at 55°C, grape juice at 5°C, deionized water at 25°C, or thermocycled between 5°C and 55°C. Color stability (ΔE&lt;sub&gt;00&lt;/sub&gt;\u0000 ) and relative translucency parameter (RTP&lt;sub&gt;00&lt;/sub&gt;\u0000 ) were evaluated. Data was analyzed with two-way ANOVA and Tukey's post-hoc tests (&lt;i&gt;α&lt;/i&gt; = 0.05).&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Results&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Material type significantly affected the color and translucency following aging (&lt;i&gt;p&lt;/i&gt; &lt; 0.001). Among additively manufactured materials, Primeprint Temp demonstrated the least color change (ΔE\u0000 &lt;sub&gt;00&lt;/sub&gt;\u0000  = 4.30 ± 1.10), while Ceramic Crown Resin showed the most significant discoloration (ΔE\u0000 &lt;sub&gt;00&lt;/sub&gt;\u0000  = 13.52 ± 1.40). Furthermore, the milled hybrid ceramic material (Enamic) exhibited the lowest overall color change across all tested materials. Ceramic Crown Resin exhibited the most significant reduction in the relative translucency parameter (ΔRTP\u0000 &lt;sub&gt;00&lt;/sub&gt;\u0000  = −2.70 ± 0.55), exceeding the acceptability threshold of 2.6 following immersion in coffee.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Conclusions&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Primeprint Temp demonstrated superior color and translucency stability relative to the other materials examined, whereas Ceramic Crown Resin showed the least stability, particularly under the conditions of coffee immersion.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Clinical Significance&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Understanding the optical stability of contemporary interim additively manufactured resins facilitates enhanced esthetic stability between sessions and minimizes the neces","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":"38 9","pages":"1766-1772"},"PeriodicalIF":4.6,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147369561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Peri-Implant Supracrestal Resiliency (PSR): A Geometric Determinant Guiding Emergence Profile Execution","authors":"Young K. Kim,&nbsp;Alexander Komar,&nbsp;Huan Su,&nbsp;Alberto Monje,&nbsp;Oscar Gonzalez-Martin","doi":"10.1111/jerd.70193","DOIUrl":"10.1111/jerd.70193","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>To introduce peri-implant supracrestal resiliency (PSR) as a geometrically grounded determinant that informs strategic emergence profile engineering in implant-supported restorations.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Clinical Considerations</h3>\u0000 \u0000 <p>Emergence profile development plays a pivotal role in peri-implant stability and esthetic success; however, conventional tissue-conditioning protocols often require additional provisional stages, custom components, or extended treatment sequences that may not be practical in academic, referral-based, or multidisciplinary settings. PSR is proposed as a dynamic descriptor of the capacity of supracrestal tissues to tolerate prosthetic contour displacement in response to restorative demands. Rather than prescribing specific techniques, PSR provides interpretive guidance to determine whether prosthetic modification of the emergence profile can be performed within existing workflows or whether adjunctive tissue modulation is warranted.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Clinical Significance</h3>\u0000 \u0000 <p>Recognition of supracrestal tissue resiliency supports geometrically driven and clinically pragmatic restorative strategies that balance esthetic intent with tissue tolerance and real-world clinical constraints.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>PSR reconceptualizes the emergence profile acquisitions from a uniformly assumed objective to a geometry-driven, context-dependent decision guided by tissue behavior.</p>\u0000 </section>\u0000 </div>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":"38 9","pages":"1638-1646"},"PeriodicalIF":4.6,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148042456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}