keyword
https://read.qxmd.com/read/38536146/stresses-in-premolars-restored-using-different-post-and-core-and-crown-materials-an-fea-study
#1
JOURNAL ARTICLE
Tatjana Maravić, Claudia Mazzitelli, Allegra Comba, Uros Josic, Federico Del Bianc, Annamaria Forte, Darko Vasiljević, Larisa Blažić, Lorenzo Breschi, Annalisa Mazzoni
PURPOSE: The aim of the present study was to investigate the influence of three post-and-core systems and two crown materials on stresses in restored premolars using Finite Element Analysis (FEA). MATERIALS AND METHODS: A maxillary second premolar 3D model was created in SolidWorks 2014 (Dassault Systémés). Severe loss of tooth structure was simulated with six restorative options: 1) glass-fiber-reinforced composite post and composite core (GFRC)+CAD/CAM leucite-reinforced glass-ceramic crown (LRC); 2) carbon-fiberreinforced composite post and composite core (CFRC)+LRC; 3) metal cast post-and-core (MPC)+LRC 4) GFRC+CAD/CAM composite resin crown (CC); 5) CFRC+CC; 6) MPC+CC...
March 22, 2024: International Journal of Prosthodontics
https://read.qxmd.com/read/38526488/crown-adjustment-and-chairside-efficiency-of-single-unit-restorations-fabricated-from-immediate-and-staged-impressions-using-a-digital-workflow-for-posterior-implants
#2
JOURNAL ARTICLE
Shuxin Ren, Xi Jiang, Ye Lin, Ping Di
PURPOSE: This is a clinical study to compare immediate and staged impression methods in a complete digital workflow for single-unit implants in the posterior area. MATERIALS AND METHODS: Sixty patients requiring single-unit implant crowns were enrolled. Forty patients were assigned to the test group, immediate digital impression after implant surgery with crown delivery 4 months later. The remaining 20 patients were assigned to the control group, staged digital impressions 4 months after implant surgery, and crown delivery 1 month later...
March 25, 2024: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://read.qxmd.com/read/38523819/interdisciplinary-full-mouth-rehabilitation-of-a-patient-with-amelogenesis-imperfecta-from-childhood-to-young-adult-hood-a-12-year-case-report
#3
Élisa Caussin, Frédéric Courson, Elisabeth Dursun, Yohann Brukarz, Daniel Dot, Catherine Chaussain, Jean-Pierre Attal, Philippe François
Treatment of patients with amelogenesis imperfecta extends over many years, from childhood to early adulthood. Their management at any age is complex and has to be adapted in relation to therapies validated in the general population.
March 2024: Clinical Case Reports
https://read.qxmd.com/read/38522896/current-prospect-of-dental-zirconia-recycling-a-scoping-review
#4
JOURNAL ARTICLE
Hui Yang, Lu Sun, Hao Yu, Alexander Patera Nugraha, Juan Ramón Vanegas Sáenz, Guang Hong
PURPOSE: This scoping review aimed to identify and discuss the recyclability of dental zirconia residuals along with the factors influencing the properties of dental recycled zirconia. STUDY SELECTION: In vitro studies written in both English and Chinese that evaluated the recyclability of dental zirconia residue were selected. A literature search was conducted in Medline, PubMed, Web of Science, and Cochrane Library databases with no restrictions on the publication year...
March 23, 2024: Journal of Prosthodontic Research
https://read.qxmd.com/read/38513226/3d-printed-custom-tray-for-maxillofacial-implant-assisted-partial-denture
#5
JOURNAL ARTICLE
Yutaro Oyamada, Yuka Sasaki, Kazuhiro Kon
This technique presents a new fabrication workflow for a three-dimensional (3D) printed custom tray, which duplicates the morphology of the treatment denture for maxillofacial prostheses using an intraoral scanner, computer-aided design (CAD) software, and a 3D printer. A 70-year-old man underwent reconstruction of segmental mandibulectomy for mandibular osteoblastoma, followed by implant placement and secondary surgery. During the surgical treatment, a treatment denture was fabricated to restore oral function and determine the morphology of the definitive denture...
March 21, 2024: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://read.qxmd.com/read/38502779/effects-of-aging-on-attachment-of-candida-albicans-to-conventional-heat-polymerized-cad-cam-milled-and-cad-cam-3d-printed-acrylic-resin-bases
#6
JOURNAL ARTICLE
Gabrielle K Jung, Stephanie N Mora, Stephen S Yune, Anton Petrich, Marina Hernandez-Feldpausch, Christopher M Hamlin, Francois O Tuamokumo, Jeffrey J Kim
PURPOSE: The aim of this study was to assess Candida albicans attachment on conventionally fabricated (polymethylmethacrylate, PMMA), CAD-CAM milled, and 3D-printed acrylic resin bases pre- and post-simulated thermal aging, along with examining material surface changes after aging. MATERIALS AND METHODS: Forty-six samples (10 mm × 10 mm × 2 mm) for each of four material groups (conventional heat-polymerized PMMA, CAD-CAM milled acrylic resin base, CAD-CAM 3D-printed methacrylate resin base, CAD-CAM 3D-printed urethane methacrylate resin base) were subjected to 0, 1, or 2 years of simulated thermal aging...
March 19, 2024: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://read.qxmd.com/read/38498865/effect-of-hydrothermal-aging-on-the-flexural-strength-and-microhardness-of-materials-used-for-additive-or-subtractive-manufacturing-of-definitive-restorations
#7
JOURNAL ARTICLE
Deniz Yılmaz, Gülce Çakmak, Mehmet Esad Güven, Stefano Pieralli, Hyung-In Yoon, Marta Revilla-León, Burak Yilmaz
PURPOSE: To evaluate the flexural strength (FS) and microhardness of various CAD/CAM restorative materials intended for definitive use. The effect of hydrothermal aging on the mechanical properties of these materials was also investigated. MATERIALS AND METHODS: A total of 210 bar-shaped specimens (17 × 4 × 1.5 mm ± 0.02 mm) were fabricated via either subtractive manufacturing (SM) methods-reinforced composite resin (SM-CR), polymer-infiltrated ceramic network (SM-PICN), fine-structured feldspathic ceramic (SMFC), nanographene-reinforced polymethyl methacrylate (PMMA; SM-GPMMA), PMMAbased resin (SM-PMMA)-or additive manufacturing (AM) methods with urethane acrylate-based resins (AM-UA1 and AM-UA2)...
February 21, 2024: International Journal of Prosthodontics
https://read.qxmd.com/read/38498860/accuracy-of-dental-restorations-fabricated-using-milling-vs-3d-printed-molds-a-pilot-study
#8
JOURNAL ARTICLE
Pekka Ahlholm, Kirsi Sipilä, Pirkko-Liisa Tarvonen, Tuomo Silvast, Reijo Lappalainen
PURPOSE: To compare the accuracy of 12 different dental restorations fabricated with milling or 3D-printed molds and robotically controlled casting. MATERIALS AND METHODS: Twelve dental restorations (11 inlays and onlays and 1 crown) were made per restoration type, one per each of the 12 different teeth models (total of 24 restorations). On each tooth preparation, two restorations were manufactured using different CAD/ CAM techniques: (1) milling and (2) robotically controlled casting and 3D-printed molds...
February 21, 2024: International Journal of Prosthodontics
https://read.qxmd.com/read/38489222/comparison-of-3d-printed-single-crown-outcomes-among-different-computer-aided-design-software-programs
#9
JOURNAL ARTICLE
Juliana No-Cortes, Bonnie Attard, David Paul Mifsud, Jacqueline Ferreira Lima, Roberto Adrian Markarian, Ana Paula Ayres, Glenn Cassar, Arthur Rodriguez Gonzalez Cortes, Nikolai John Attard
PURPOSE: Low-cost resin 3D printers have been used to produce affordable interim single crowns in public and private dental practices. The purpose of this study was to assess the impact of different computer-aided design (CAD) software programs on 3D trueness, microscopic marginal and internal gaps, time to design, and interproximal contacts of low-cost 3D-printed single crowns. MATERIALS AND METHODS: This in vitro study was performed on a total of 90 standardized resin-prepared teeth adapted to a dental manikin...
February 21, 2024: International Journal of Prosthodontics
https://read.qxmd.com/read/38489220/fracture-strength-of-six-unit-anterior-fixed-provisional-restorations-fabricated-using-various-dental-cad-cam-systems
#10
JOURNAL ARTICLE
Gyu-Won Yoon, Eun-Jin Park
PURPOSE: This study compares the fracture strengths of long-span fixed provisional restorations fabricated via digital additive and subtractive methods to those fabricated via conventional heat-processing techniques. MATERIALS AND METHODS: A six-unit anterior partial restoration was designed as an anatomical and morphologic structure using a dental CAD/CAM system. The provisional restorations (N = 40) of four different fabrication methods (n = 10 per group) were used for the failure loading test: stereolithography apparatus (SLA), liquid crystal display (LCD), milling (MIL), and heat-processed temporary (HPT)...
February 21, 2024: International Journal of Prosthodontics
https://read.qxmd.com/read/38485595/clinical-performance-and-patient-related-outcome-measures-of-digitally-fabricated-complete-dentures-a-systematic-review-and-meta-analysis
#11
REVIEW
Maria Eduarda Lemos Avelino, Rayanna Thayse Florêncio Costa, Taciana Emília Leite Vila-Nova, Belmiro Cavalcanti do Egito Vasconcelos, Eduardo Piza Pellizzer, Sandra Lúcia Dantas Moraes
STATEMENT OF PROBLEM: The demand to streamline workflow while increasing patient comfort and satisfaction in the manufacturing of removable complete dentures (CDs) is growing, and computer-aided design and computer-aided manufacturing (CAD-CAM) technology has gained prominence. However, a systematic review and meta-analysis of the clinical performance and patient-related outcome measures (PROMs) of digitally fabricated complete dentures is lacking. PURPOSE: The purpose of this systematic review and meta-analysis was to determine whether digitally fabricated CDs improve the clinical performance and PROMs compared with conventionally fabricated CDs...
March 13, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38483093/flexural-properties-and-fatigue-limit-of-3d-printed-and-milled-resin-based-materials
#12
JOURNAL ARTICLE
Neimar Sartori, Said Arturo Sanchez, Dayane Oliveira, Sherif Hosney, Panagiotis Zoidis, William Martin, Luiz Gonzaga, Mateus G Rocha
PURPOSE: The purpose of this study was to evaluate the flexural strength (FS), flexural modulus (FM), and fatigue limit (FL) of 3D-printed resin-based polymers and composites and compare them to 3D-printed composites. MATERIALS AND METHODS: A bar-shaped specimen (25 × 2 × 2 mm) was CAD designed according to ISO 4049:2019, and 60 duplicates of the 3D model were nested at a 45-degree angle with the printing platform and 3D-printed with three materials: denture teeth resin (Denture Teeth, Formlabs), temporary crown and bridge resin (Temporary CB, Formlabs), and composite (Flexcera Smile Ultra+, Desktop Health)...
March 14, 2024: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://read.qxmd.com/read/38480018/influence-of-cad-cam-milling-strategies-on-the-outcome-of-indirect-restorations-a-scoping-review
#13
REVIEW
Rafaela Oliveira Pilecco, Renan Vaz Machry, Andrea Baldi, João Paulo Mendes Tribst, Rafael Sarkis-Onofre, Luiz Felipe Valandro, Cornelis Johannes Kleverlaan, Nicola Scotti, Gabriel Kalil Rocha Pereira
STATEMENT OF PROBLEM: The influence of computer-aided manufacturing (CAM) parameters and settings on the outcomes of milled indirect restorations is poorly understood. PURPOSE: The purpose of this scoping review was to summarize the current CAM systems, parameters, and setting changes, and their effects on different outcomes of milled indirect restorations and aspects related to their manufacture. MATERIAL AND METHODS: The protocol of this review is available online (https://osf...
March 12, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38479887/monolithic-hybrid-abutment-crowns-influence-of-crown-height-crown-morphology-and-material-on-the-implant-abutment-complex
#14
JOURNAL ARTICLE
Tobias Graf, Elisabeth Völler, Kurt Erdelt, Michael Stimmelmayr, Oliver Schubert, Jan-Frederik Güth
PURPOSE: This in vitro study investigated the influence of material selection, crown morphology, and vertical crown height on the biomechanical behavior of monolithic hybrid abutment crowns (HACs). METHODS: Ninety implants were embedded in accordance with ISO standard 14801; ninety HACs were mounted (N=90). Monolithic crowns with varying group-specific designs were luted using titanium bases. HACs were fabricated from monolithic lithium disilicate ceramic (LD) or zirconia-reinforced lithium silicate ceramic (ZLS)...
March 13, 2024: Journal of Prosthodontic Research
https://read.qxmd.com/read/38477845/occlusal-veneers-and-load-bearing-capacity-of-a-restored-tooth
#15
JOURNAL ARTICLE
Topias Yli-Urpo, Lippo Lassila, Timo Närhi, Pekka Vallittu
PURPOSE: The aim of this study was to evaluate the influence of restoration bonding and type of preparation on load bearing capacity of a tooth restored with indirect glass ceramic or hybrid ceramic occlusal veneer restoration. MATERIALS AND METHODS: Occlusal surfaces of extracted human molar teeth were prepared for indirect occlusal veneers with or without circumferential chamfer. The occlusal veneers were milled either from CAD/CAM hybrid ceramic (HC) Cerasmart (GC), or lithium-disilicate glass ceramic (LDGC) IPS e...
March 13, 2024: International Journal of Prosthodontics
https://read.qxmd.com/read/38455677/clinical-comparison-of-marginal-fit-of-ceramic-inlays-between-digital-and-conventional-impressions
#16
JOURNAL ARTICLE
Franklin Guillermo Vargas-Corral, Américo Ernesto Vargas-Corral, Miguel Angel Rodríguez Valverde, Manuel Bravo, Juan Ignacio Rosales Leal
PURPOSE: The aim of this stuldy was to compare the clinical marginal fit of CAD-CAM inlays obtained from intraoral digital impression or addition silicone impression techniques. MATERIALS AND METHODS: The study included 31 inlays for prosthodontics purposes of 31 patients: 15 based on intraoral digital impressions (DI group); and 16 based on a conventional impression technique (CI group). Inlays included occlusal and a non-occlusal surface. Inlays were milled in ceramic...
February 2024: Journal of Advanced Prosthodontics
https://read.qxmd.com/read/38455676/3d-quantitative-analysis-and-sem-qualitative-analysis-of-natural-antagonist-enamel-opposing-cad-cam-monolithic-zirconia-or-lithium-disilicate-tooth-supported-crowns-versus-enamel-opposing-natural-enamel
#17
JOURNAL ARTICLE
Piyarat Woraganjanaboon, Chuchai Anunmana
PURPOSE: This study aimed to evaluate the maximum vertical wear, volume wear, and surface characteristic of antagonist enamel, opposing monolithic zirconia or lithium disilicate crowns. MATERIALS AND METHODS: The study comprised 24 participants (n = 12), who were randomly allocated to receive either a 5 mol% Y-TZP or a lithium disilicate crown in positions which would oppose the natural first molar tooth. The contralateral first molar along with its antagonist was considered as the enamel opposing natural enamel control...
February 2024: Journal of Advanced Prosthodontics
https://read.qxmd.com/read/38443240/in-vitro-damping-and-strain-distribution-for-implant-supported-crowns-using-5-different-cad-cam-crowns-and-3-different-luting-cements
#18
JOURNAL ARTICLE
Charnikan Sukkasam, Krid Kamonkhantikul, Woraporn Homsiang, Mansuang Arksornnukit
STATEMENT OF PROBLEM: Dental implants are particularly susceptible to occlusal overloading because, unlike natural teeth, they lack a periodontal ligament to help absorb occlusal forces. However, studies evaluating the impact of different crown and luting materials on the damping behavior and strain distribution of implant-supported crowns are lacking. PURPOSE: The purpose of this in vitro study was to investigate the damping behavior and strain distribution of peri-implant bone associated with 5 different CAD-CAM implant-supported crowns and 3 luting materials...
March 4, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38439020/adhesion-of-candida-albicans-to-digital-versus-conventional-acrylic-resins-a-systematic-review-and-meta-analysis
#19
JOURNAL ARTICLE
Mohammed Nasser Alhajj, Esam Halboub, Norlela Yacob, Sadeq Ali Al-Maweri, Siti Fauzza Ahmad, Asja Celebić, Hesham M Al-Mekhlafi, Nosizana Mohd Salleh
BACKGROUND: The present systematic review and meta-analysis investigated the available evidence about the adherence of Candida Albicans to the digitally-fabricated acrylic resins (both milled and 3D-printed) compared to the conventional heat-polymerized acrylic resins. METHODS: This study followed the guidelines of the Preferred Reporting Items for Systematic Review and Meta-analyses (PRISMA). A comprehensive search of online databases/search tools (Web of Science, Scopus, PubMed, Ovid, and Google Scholar) was conducted for all relevant studies published up until May 29, 2023...
March 4, 2024: BMC Oral Health
https://read.qxmd.com/read/38431509/effect-of-surface-roughness-and-biofilm-formation-on-the-color-properties-of-resin-infiltrated-ceramic-and-lithium-disilicate-glass-ceramic-cad-cam-materials
#20
JOURNAL ARTICLE
Sümeyra Topçu, Neslihan Tekçe, Dilan Kopuz, Eda Yazıcı Özcelik, Fetiye Kolaylı, Safa Tuncer, Mustafa Demirci
STATEMENT OF PROBLEM: Computer-aided design and computer-aided manufacturing (CAD-CAM) materials have become popular for dental restorations; however, which materials should be preferred in terms of surface properties after biofilm formation is unclear. PURPOSE: The purpose of this in vitro study was to investigate the effect of biofilm formation on the discoloration properties of resin-infiltrated ceramic and glass ceramic CAD-CAM materials and human teeth and to examine the effect of the brushing procedure on color change...
March 1, 2024: Journal of Prosthetic Dentistry
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