Journal of Prosthetic Dentistry最新文献

{"title":"Biomechanical consideration in tooth-supported glass-ceramic restorations: A systematic review and meta-analysis of survival rates and irreparable failures","authors":"Brunna M. Ferrairo DDS, MSc, PhD ,&nbsp;Lucas José de Azevedo-Silva DDS, MSc, PhD ,&nbsp;Pedro R. Minim DDS, MSc ,&nbsp;Raphaelle S. Monteiro-Sousa DDS, MSc ,&nbsp;Leticia F. Pereira DDS, MSc ,&nbsp;Sandro B. Bitencourt DDS, MSc, PhD ,&nbsp;Paulo Francisco Cesar DDS, MSc, PhD ,&nbsp;Sharanbir K. Sidhu BDS, MSc, PhD ,&nbsp;Ana Flávia S. Borges DDS, MSc, PhD","doi":"10.1016/j.prosdent.2024.05.007","DOIUrl":"10.1016/j.prosdent.2024.05.007","url":null,"abstract":"<div><h3>Statement of problem</h3><div><span>Knowledge on the biomechanical behavior of glass-ceramics, their survival rate over time, and their potential failures is essential for decision-making in clinical practice. </span>Systematic reviews and meta-analysis of their survival rates and irreparable failures are lacking.</div></div><div><h3>Purpose</h3><div>The purpose of this systematic review and meta-analysis was to evaluate the survival rates and irreparable failures of various monolithic glass-ceramic dental restorations to help determine biomechanical indications.</div></div><div><h3>Material and methods</h3><div>A comprehensive literature search was conducted across the PubMed, Scopus, Web of Science, and EMBASE databases based on the population, intervention, comparison, and outcome (PICO) question, risk of bias assessment, data extraction, subgroup analysis, and meta-analysis. Both randomized and nonrandomized clinical trials that reported survival rate and irreparable failure were screened. The risk, with a 95% confidence interval, was calculated by using the Mantel-Haenszel method.</div></div><div><h3>Results</h3><div>A total of 46 articles met the inclusion criteria: 8 for laminate veneers, 20 for partial coverage restorations, 11 for single crowns, and 6 for fixed partial dentures, encompassing 1715 participants rehabilitated with 4209 restorations. The estimated cumulative survival rate for partial coverage restorations was 90% over an average span of 6.2 years, with an irreparable failure occurrence of n=5.9. Laminate veneers had a survival rate of 90.2% over 6.5 years, with an irreparable failure occurrence of n=8.2. Single crowns had a survival rate of 96% over 4.6 years and an irreparable failure of n=2.7. Conversely, fixed partial dentures had a survival rate of 76.1% over 6.5 years with an irreparable failure of n=5.2.</div></div><div><h3>Conclusions</h3><div>Glass-ceramic materials demonstrate relatively high survival rates, indicating that they provide a safe and reliable option for partial coverage restorations, laminate veneers, and single crowns. However, fixed partial dentures had a higher proportion of irreparable failures and a lower survival rate, and caution is required.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 879.e1-879.e13"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141288251","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":"Dimensional accuracy and clinical adaptation of monolithic zirconia crowns fabricated with the nanoparticle jetting technique","authors":"Jizhe Lyu BS ,&nbsp;Xu Yang DDS, PhD ,&nbsp;Yi Li BS ,&nbsp;Jianguo Tan DDS, PhD ,&nbsp;Xiaoqiang Liu DDS, PhD","doi":"10.1016/j.prosdent.2023.04.008","DOIUrl":"10.1016/j.prosdent.2023.04.008","url":null,"abstract":"<div><h3>Statement of problem</h3><div>The nanoparticle<span> jetting (NPJ) technique is a recently developed additive manufacturing method that may have useful dental applications. The manufacturing accuracy and clinical adaptation of zirconia monolithic crowns fabricated with NPJ are unknown.</span></div></div><div><h3>Purpose</h3><div>The purpose of this in vitro study was to compare the dimensional accuracy and clinical adaptation of zirconia crowns fabricated with NPJ and those fabricated with subtractive manufacturing (SM) and digital light processing (DLP).</div></div><div><h3>Material and methods</h3><div><span>Five standardized typodont right mandibular first molars<span> were prepared for ceramic complete crowns, and 30 zirconia monolithic crowns were fabricated using SM, DLP, and NPJ (n=10) with a completely digital workflow. The dimensional accuracy at the external, intaglio, and marginal areas was determined by superimposing the scanned data and computer-aided design data of the crowns (n=10). Occlusal, axial, and marginal adaptations were evaluated by using a nondestructive silicone replica and dual scanning method. The 3-dimensional discrepancy was evaluated to determine clinical adaptation. Differences among test groups were analyzed by using a </span></span>MANOVA and the post hoc least significant difference test for normally distributed data or the Kruskal-Wallis test with Bonferroni correction for nonnormally distributed data (α=.05).</div></div><div><h3>Results</h3><div>Significant differences were found in the dimensional accuracy and clinical adaptation among the groups (<em>P</em>&lt;.001). The NPJ group had a lower overall root mean square (RMS) value for dimensional accuracy (22.9 ±1.4 μm) than the SM (27.3 ±5.0 μm) and DLP (36.4 ±5.9 μm) groups (<em>P</em>&lt;.001). The NPJ group had a lower external RMS value (23.0 ±3.0 μm) than the SM group (28.9 ±5.4 μm) (<em>P</em>&lt;.001) and equivalent marginal and intaglio RMS values than the SM group. The DLP group had larger external (33.3 ±4.3 μm), intaglio (36.1 ±10.7 μm), and marginal (79.4 ±12.9 μm) deviations than the NPJ and SM groups (<em>P</em>&lt;.001). With regard to clinical adaptation, the marginal discrepancy was smaller in the NPJ group (63.9 ±27.3 μm) than in the SM group (70.8 ±27.5 μm) (<em>P</em>&lt;.001). No significant differences were found between the SM and NPJ groups in terms of the occlusal (87.2 ±25.5 and 80.5 ±24.2 μm, respectively) and axial (39.1 ±19.7 and 38.4 ±13.7 μm, respectively) discrepancies. The DLP group had larger occlusal (239.0 ±60.1 μm), axial (84.9 ±29.1 μm), and marginal (140.4 ±84.3 μm) discrepancies than the NPJ and SM groups (<em>P</em>&lt;.001).</div></div><div><h3>Conclusions</h3><div>Monolithic zirconia crowns fabricated using NPJ have higher dimensional accuracy and clinical adaptation than those fabricated using SM or DLP.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 985.e1-985.e7"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9509658","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":"Accuracy of guided dental implant surgery using a fully digital workflow: A case series","authors":"Carlos Kiyoshi Moreira Massuda DDS, MSc ,&nbsp;Marcia Rosa de Carvalho DDS ,&nbsp;João Baptista de Moraes DDS, MS ,&nbsp;Débora Pallos DDS, MSc, PhD ,&nbsp;Yeon Jung Kim DDS, MS, PhD","doi":"10.1016/j.prosdent.2022.09.016","DOIUrl":"10.1016/j.prosdent.2022.09.016","url":null,"abstract":"<div><h3>Statement of problem</h3><div>Computer-guided implant surgery facilitated by intraoral scanning may enhance the efficiency of the digital workflow. However, it is necessary to assess technique accuracy to evaluate the accuracy of implant placement.</div></div><div><h3>Purpose</h3><div>The purpose of this clinical study was to evaluate the accuracy of a virtual computer-aided design and computer-aided manufacturing (CAD-CAM) static guided surgery technique associated with intraoral scanning in partially edentulous participants by analyzing the overlap among preoperative and postoperative cone beam computed tomography (CBCT) scans, virtual planning, and the guided surgery performed.</div></div><div><h3>Material and methods</h3><div>Eleven partially edentulous participants underwent CBCT and intraoral scanning (TRIOS3). Data were integrated into a software program (ImplantViewer 3.5) for the virtual planning of implants and 3-dimensional (3D) printing of the prototype CAD-CAM surgical guide. A total of 18 implants were placed using the CAD-CAM static computer-aided implant surgery technique (Strong SW). After 15 days, postoperative CBCT scans were made and 4 variables (angular, coronal, apical, and vertical deviation) were measured to compare the virtually planned implants and the implants placed by analyzing the overlap between preoperative and postoperative of the virtual planning and guided surgery performed using the ImplantViewer 3.5 and Rhino 6 software programs.</div></div><div><h3>Results</h3><div>Deviations were found in all parameters analyzed. The mean angular deviation was 2.68 ±1.62 degrees; mean coronal deviation, 0.82 ±0.44 mm; mean apical deviation, 1.14 ±0.44 mm; and mean vertical deviation, 0.62 ±0.44 mm.</div></div><div><h3>Conclusions</h3><div>The implants placed using the CAD-CAM static guided surgery technique associated with intraoral scanning in partially edentulous participants exhibited angular and linear deviations when compared with virtual planning implants. However, these deviations were not clinically significant.</div></div>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":"132 5","pages":"Pages 973-980"},"PeriodicalIF":4.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40701172","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":"Impact of speed sintering on the mechanical and optical properties of multilayered zirconia.","authors":"Omar Mohamed, Hyeongil Kim, Steven Makowka, Ahmed AlMozayen, Kedith Sawangsri, Rui Li","doi":"10.1016/j.prosdent.2024.09.030","DOIUrl":"https://doi.org/10.1016/j.prosdent.2024.09.030","url":null,"abstract":"<p><strong>Statement of problem: </strong>Speed sintering techniques have been introduced to shorten the sintering time of zirconia ceramics, yet their impact on multilayered zirconia properties remains understudied.</p><p><strong>Purpose: </strong>The purpose of this in vitro study was to assess the effect of speed sintering on the optical properties and the mechanical flexural strength of multilayered zirconia materials.</p><p><strong>Material and methods: </strong>A total of 360 disks (Ø14 ±2 mm ×1.2 ±0.02 mm) were fabricated by following the International Organization for Standardization (ISO) 6872:2015 standard using 2 types of Vita A2 shade multilayered zirconia materials: IPS e.max ZirCAD Prime (ZP) and IPS e.max ZirCAD Prime Esthetic (ZPE). Each material comprised translucent (Tr), gradient l (Gr), and dentin (De) layers, with 60 disks per layer. Half were sintered using a standard sintering protocol and half using a speed sintering protocol. Biaxial flexural strength was accessed using a universal testing machine equipped with the Blue Hill Universal software program by following the ISO 6872:2015 standard, with 20 disks per subgroup. The spectrophotometric analysis of optical properties (contrast ratio [CR], translucency parameter [TP], and total transmittance [Tt%]) was performed using a dual-beam spectrophotometer (Ultrascan VIS) in accordance with the ISO 7491:2000 standard, with 10 disks per subgroup. The comparison of the optical properties and the mechanical flexural strength between the speed and standard protocol was analyzed using an unpaired t test (α=.05).</p><p><strong>Results: </strong>Speed sintering reduced biaxial flexural strength in all ZP layers (P<.05) and in ZPE-Gr (P<.05). A statistically significant difference in the CR was observed in the ZP-Tr, ZP-Gr, and ZPE-Gr layers (P<.05). The TP of the ZP-Gr, ZP-De, and ZPE-Gr layers was significantly lower when using the speed sintering protocol. Tt% was significantly lower with speed sintering for both materials (P<.05).</p><p><strong>Conclusions: </strong>Speed sintering statistically changed both the optical (CR, TP, Tt%) and mechanical (flexural strength) properties of multilayered zirconia materials, but the differences may not be clinically relevant.</p>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142546092","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":"Effect of toothbrushing on surface roughness and gloss of CAD-CAM versus conventional interim materials with different surface treatments.","authors":"Sarasinee Sattawatthamrong, Krid Kamonkhantikul, Woraporn Homsiang, Mansuang Arksornnukit","doi":"10.1016/j.prosdent.2024.10.003","DOIUrl":"https://doi.org/10.1016/j.prosdent.2024.10.003","url":null,"abstract":"<p><strong>Statement of problem: </strong>Characterizing interim restorations promotes esthetics. However, studies on the effects of characterization materials on the surface roughness and gloss of interim materials after toothbrushing are lacking.</p><p><strong>Purpose: </strong>The purpose of this in vitro study was to evaluate the surface roughness and gloss of 5 different interim materials with different surface treatments after 1 year of simulated toothbrushing.</p><p><strong>Material and methods: </strong>Cuboid specimens (10×12×2 mm) were fabricated from each interim material: autopolymerized polymethyl methacrylate (UNIFAST Trad), autopolymerized bis-acryl composite resin (Protemp 4), light-activated composite resin (REVOTEK LC), milled polymethyl methacrylate block (DD provi P HI), and 3-dimensionally printed methacrylate oligomer (Nextdent C&B MFH). Each material was divided into 3 groups based on surface treatment (n=10): polishing, application of Lite Art and Resin Glaze, and application of OPTIGLAZE color. The specimens were subjected to 5000 and 10 000 cycles of toothbrushing. The surface roughness and gloss were measured and separately analyzed by using 3-way repeated measures ANOVA (α=.05).</p><p><strong>Results: </strong>Significant interactions of the surface roughness and gloss among interim materials, surface treatments, and toothbrushing durations were found (P<.001). After 5000 and 10 000 cycles, each polished material showed no significant difference in surface roughness compared with baseline: Protemp 4 (P>.999), REVOTEK LC (P>.999, P=.922), and Nextdent C&B MFH (P>.999), except for UNIFAST Trad and DD provi P HI (P<.001). Coating with Lite Art and Resin Glaze, as well as OPTIGLAZE color, significantly reduced surface roughness after both 5000 and 10 000 cycles for all materials (application of Lite Art and Resin Glaze with UNIFAST TRAD (P<.001), Protemp 4 (P<.001), REVOTEK LC (P<.001), DD provi P HI (P<.001), and Nextdent C&B MFH (P<.001, P=.002), and application of OPTIGLAZE color with UNIFAST TRAD (P<.001), Protemp 4 (P<.001), REVOTEK LC (P<.001, P=.002), DD provi P HI (P<.001), and Nextdent C&B MFH (P<.001, P=.008)). Specimens with these treatments also exhibited significantly better gloss compared with the polished specimens (P<.001).</p><p><strong>Conclusions: </strong>After 5000 to 10 000 cycles of toothbrushing, Protemp 4, REVOTEK LC, and Nextdent C&B MFH, interim materials containing fillers, exhibited smoother surfaces compared with UNIFAST Trad and DD provi P HI, interim materials without fillers. Coating of all materials reduced surface roughness and increased gloss. After 5000 to 10 000 cycles of toothbrushing, the surface roughness of each material remained stable; while the gloss decreased slightly, it remained within clinically acceptable levels.</p>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142546091","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":"Correlation between implant angulation and crestal bone changes: A 5-year retrospective study.","authors":"Donghyun Kim, Kihyun Kim, Joo-Young Ohe, Seung Jun Song, Janghyun Paek","doi":"10.1016/j.prosdent.2024.09.015","DOIUrl":"https://doi.org/10.1016/j.prosdent.2024.09.015","url":null,"abstract":"<p><strong>Statement of problem: </strong>The effects of nonaxial forces on peri-implant bone loss have been investigated, mostly in reference to buccal mesiodistal implant angulations as potential risk indicators. However, when implant angulations are multidirectional, including the buccolingual aspect, evaluations of peri-implant bone loss based solely on mesiodistal measurements may skew the correlation.</p><p><strong>Purpose: </strong>The purpose of this retrospective study was to evaluate the correlation between the magnitudes of multidirectional implant angulations and peri-implant crestal bone loss.</p><p><strong>Material and methods: </strong>Data were retrospectively collected and analyzed from clinical records, periapical radiographic images, and computer-aided design (CAD) files of custom abutments. The study included 288 patients with 506 dental implants, and the mean follow-up duration after the placement of definitive prostheses was 5.1 years. Patients with uncontrolled systemic disease were excluded. Variables such as age, sex, type of unit (single-unit or multi-unit), location (maxillary or mandibular and anterior, premolar, or molar), and antagonist (natural tooth, implant-supported prosthesis, or removable prosthesis) were evaluated. The angulation of the implant (mesiodistal and buccolingual) and status of attrition (normal, localized, or generalized) were assessed using the CAD file. The angulation of the implant was then derived from the mesiodistal and buccolingual angle measurements by using a mathematical formula. Peri-implant bone loss was measured from periapical radiographs. A comparison of peri-implant bone loss between axial and nonaxial implants was performed using the Student t test (α=.05). Additional comparative evaluations were performed according to the type of unit, location, antagonist, and status of attrition in reference to the angulation categories.</p><p><strong>Results: </strong>The mean ±standard deviation peri-implant bone loss over 5 years was 0.10 ±0.39 mm in the axial implants and 0.22 ±0.48 mm in the nonaxial implants. Statistical analysis showed that nonaxial implants had a significantly greater bone loss (P<.05), which was more pronounced when the antagonists were implant-supported prostheses (P<.05) and when the implants were located in the mandible (P<.05).</p><p><strong>Conclusions: </strong>A significant correlation was observed between implant angulation and peri-implant bone loss. Nonaxially positioned implants exhibited greater bone loss compared with axially positioned implants. Additionally, the location of the implant and the type of antagonist were found to influence the extent of bone loss. These findings suggest that careful consideration of implant angulation, as well as the position and type of antagonist, is crucial in minimizing peri-implant bone loss.</p>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142546090","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 multifunctional scannable mounting device for computer guided implant surgery: An in vitro study.","authors":"Daniel Rotenberg, Yaniv Mayer, Jacob Horwitz, Yuval Nov, Hadar Zigdon-Giladi, Eran Gabay","doi":"10.1016/j.prosdent.2024.09.027","DOIUrl":"https://doi.org/10.1016/j.prosdent.2024.09.027","url":null,"abstract":"<p><strong>Statement of problem: </strong>As part of the growing digitization of the dental field, clinicians are looking for ways to simplify digital workflow, reduce chairside time, and provide new work patterns for future applications. Whether scanning with a multifunctional apparatus (MFA) scan body results in improved scanning is unclear.</p><p><strong>Purpose: </strong>The purpose of this in vitro study was to compare the horizontal, vertical, and angular deviations with the MFA scan body with a commercially available scan body (SBIO).</p><p><strong>Material and methods: </strong>Sixteen identically printed edentulous maxillary models were used to plan two Ø3.8×11.5-mm implants in the right maxillary first molar and left maxillary central incisor locations. Two implants in each model were installed using a surgical guide. The models were scanned using an intraoral scanner with MFA and then rescanned twice, with SBIO using the intraoral scanner and a laboratory 3D scanner. The implants were digitally positioned according to the scanned MFA and SBIO locations in standard tessellation language (STL) files. These STL files were superimposed on the reference laboratory 3D scanner STL files. Linear measurements included implant apex/cervical horizontal/vertical deviations, as well as implant axis angular deviations. Normality was evaluated with the Shapiro-Wilk test. Paired samples t tests (2 sided) were used for the mean SBIO-MFA deviation difference. To compare the molar/incisor sites, paired samples Wilcoxon tests were used (α=.05 for all tests).</p><p><strong>Results: </strong>No statistically significant differences were found between the MFA/ SBIO deviations, for each of the 10 sites × deviation combinations (P>.05). Overall, the lowest endpoint of the 95% confidence intervals among the 8 linear measurement comparisons was -0.107 mm (coronal vertical deviation, right maxillary first molar site) and -0.30 degrees between the 2 angular measurement comparisons.</p><p><strong>Conclusions: </strong>The current in vitro study demonstrated high accuracy for the novel MFA device, similar to that of the standard SBIO scan body. Furthermore, the current study offers an alternative technique to evaluate the accuracy of implant placement by using scanning and back programming over the traditional postplacement cone beam computed tomography (CBCT) scanning.</p>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142546089","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":"Fabricating crowns that fit both an implant and an existing removable partial denture.","authors":"Saud S Alajmi, Charles J Goodacre","doi":"10.1016/j.prosdent.2024.09.024","DOIUrl":"https://doi.org/10.1016/j.prosdent.2024.09.024","url":null,"abstract":"<p><p>Fabricating a crown to fit both a tooth and an existing removable partial denture (RPD) using many different techniques has been described. However, in the event of abutment loss, information regarding the clinical and laboratory steps used to fabricate a crown that fits both an implant and an RPD is lacking. This report describes the use of either an impression coping or an interim abutment attached to the implant to which a composite resin interim restoration material is flowed and the RPD then seated to form a resin pattern of the required crown form. The process allows the implant crown to be made without retaining the patient's RPD during crown fabrication.</p>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142502639","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":"Limits of prosthetic rehabilitation of cocaine-induced midline destructive lesions: Time to change the paradigm.","authors":"Chloé Mense, Vincent Romao, Frédéric Silvestri, Romain Lan","doi":"10.1016/j.prosdent.2024.09.023","DOIUrl":"https://doi.org/10.1016/j.prosdent.2024.09.023","url":null,"abstract":"<p><p>The steady rise in cocaine consumption, particularly in its snorted form, has led to the increased incidence of cocaine-induced midline destructive lesions (CIMDLs), a severe condition resulting from chronic cocaine use that leads to significant tissue destruction in the nasal and palatal regions. Four patients with CIMDLs are presented, all characterized by nasopalatine perforation. Each patient reported a spontaneous onset of tissue loss in the hard palate near the midline, with the affected area ranging from 2.3 to 5.1 cm². All patients had a history of psychiatric conditions, including depressive episodes but without other significant medical conditions, which contributed to an average delay of 9 months before seeking initial medical consultation. Treatment, which included the use of palatal obturators to improve quality of life, remains nonstandardized and, combined with the patients' continued cocaine use and refusal of addiction care, led to poor follow-up and persistent tissue damage. This clinical report underscores the need for a paradigm shift in managing CIMDLs, emphasizing the integration of addiction treatment and psychological support with prosthetic rehabilitation to optimize long-term outcomes and prevent relapse.</p>","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142502640","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":"Response to Letter to the Editor regarding, \"Influence of occlusal collision corrections completed by two intraoral scanners or a dental design program on the accuracy of the maxillomandibular relationship\".","authors":"Marta Revilla-León, Miguel Gómez-Polo, Abdul B Barmak, John C Kois, Burak Yilmaz, Jorge Alonso Pérez-Barquero","doi":"10.1016/j.prosdent.2024.09.002","DOIUrl":"https://doi.org/10.1016/j.prosdent.2024.09.002","url":null,"abstract":"","PeriodicalId":16866,"journal":{"name":"Journal of Prosthetic Dentistry","volume":" ","pages":""},"PeriodicalIF":4.3,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142502641","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}