journal
https://read.qxmd.com/read/38413266/enhancing-the-gingival-contour-of-an-anterior-implant-restoration-by-using-a-guided-bone-regeneration-abutment
#1
JOURNAL ARTICLE
Weimao Tang, Changhong Zheng, Lei Li
Deficiencies in the alveolar bone and surrounding gingiva can pose challenges in implant placement within the esthetic zone. This clinical report describes the reconstruction of gingival tissue contours through guided bone regeneration (GBR) in the anterior maxilla during implant placement by using a modified titanium abutment to maintain the osteogenic space adjacent to the gingival margin and implant neck.
February 26, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38402134/influence-of-post-material-and-ferrule-thickness-on-the-fracture-resistance-of-endodontically-treated-premolars-a-laboratory-study
#2
JOURNAL ARTICLE
Abdulaziz Samran, Ahmed Wagdy Hashem, Shurouk Ali, Majed Al-Akhali, Sebastian Wille, Matthias Kern
STATEMENT OF PROBLEM: The influence of the ferrule thickness and post materials on the fracture resistance of endodontically treated teeth remains unclear. PURPOSE: The purpose of this laboratory study was to evaluate the influence of post material and ferrule thickness on the fracture resistance of endodontically treated mandibular premolars. MATERIAL AND METHODS: Sixty-four extracted and endodontically treated mandibular first premolars were used and divided into 4 test groups (n=16) depending on the ferrule thickness: F-0: without a ferrule, F-0...
February 23, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38395643/cad-cam-fabrication-of-semiprecision-locator-style-abutments-to-correct-severely-misaligned-implants-supporting-a-4-implant-maxillary-overdenture
#3
JOURNAL ARTICLE
Tony Daher, Steven Morgano
Implant-supported removable overdentures are a popular treatment option with a favorable impact on a patient's quality of life. A maxillary removable overdenture without palatal coverage should be supported by at least 4 implants uniformly distributed around the arch and connected by either semiprecision attachments or a bar. Optimally these 4 implants should be parallel or have their long axes nearly aligned to facilitate the prosthodontic phase of treatment by allowing the use of standard components. A computer-aided design and computer-aided manufacturing (CAD-CAM) procedure to produce LOCATOR-style attachments (T-L Custom abutments; TruAbutment Inc) to manage the restoration of 4 misaligned implants is described...
February 22, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38395642/improving-the-accuracy-of-complete-arch-implant-intraoral-digital-scans-by-using-horizontal-scan-bodies-with-occlusal-geometry-a-dental-technique
#4
JOURNAL ARTICLE
Olatz Etxaniz, Xabier Amezua, Mikel Jauregi, Eneko Solaberrieta
A technique to improve the accuracy of complete arch implant intraoral digital scans and to obtain more accurate virtual casts with them is described. First, 2 complete arch intraoral digital scans were obtained with an intraoral scanner: a multiunit abutment digital scan and an implant digital scan with reusable horizontal intraoral scan bodies (ISBs) placed on the implants. These were previously created by combining the conventional ISBs compatible with the patient's implants with extensional structures with occlusal geometry...
February 22, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38388214/facially-driven-guided-crown-lengthening-using-a-complete-digital-workflow-a-dental-technique
#5
JOURNAL ARTICLE
Hani Tohme, Marta Revilla-León, Layal Bou Semaan, Ghida Lawand
A facially driven digital guided crown lengthening method using the virtual smile design approach supplemented with a static 3-dimensional face scan that demonstrates the digital data of extraoral soft tissue is presented. The technique enables the practitioner to virtually design the new smile and surgically plan the crown lengthening procedure.
February 21, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38383281/comparative-analysis-of-the-physical-chemical-and-microbiological-properties-of-ti-6al-4v-disks-produced-by-different-methods-and-subjected-to-surface-treatments
#6
JOURNAL ARTICLE
João Vicente Calazans Neto, Izabela Ferreira, Ana Paula Ramos, Claudemiro Bolfarini, Rodolfo Lisboa Batalha, Andréa Cândido Dos Reis, Mariana Lima da Costa Valente
STATEMENT OF PROBLEM: To improve the osseointegration of dental implants and reduce microbiological growth, different micro- and nanoscale surface topographies can be used. PURPOSE: The purpose of this in vitro study was to evaluate the influence of Ti-6Al-4V with 4 surfaces, machined (DU), machined+hydroxyapatite (DUHAp), machined+acid-alkali treatment (DUAA), and additive manufacturing (DMA), on the physical, chemical, and microbiological properties. MATERIAL AND METHODS: The topography of Ti-6Al-4V disks with the 4 surfaces was evaluated by scanning electron microscopy (SEM), the chemical composition by energy dispersive X-ray spectroscopy (EDS), and the crystalline structure by X-ray diffraction (XRD)...
February 20, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38383280/in-vitro-evaluation-of-shape-memory-hydrogels-for-removable-dental-prostheses-and-optimization-of-phase-transition-temperature-for-intraoral-use
#7
JOURNAL ARTICLE
Hiroaki Kakinuma, Shigeto Koyama, Takeru Kondo, Takayuki Harata, Hidemitsu Furukawa, Hiroshi Egusa
STATEMENT OF PROBLEM: Removable dental prostheses require periodic relining with the loss of intaglio surface fit because of mucosal shape changes over time. Therefore, a new material with high adaptability to tissue changes over time would be beneficial. PURPOSE: This study focused on a shape-memory gel (SMG) that softens when heated, retains its shape when cooled, and returns to its original shape when reheated. The purpose was to optimize SMG for intraoral use by controlling the ratio of 2 acrylate monomers and to evaluate the changes in the shape memory and physical properties of SMG with temperature and to evaluate biocompatibility...
February 20, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38378312/a-digital-approach-to-fabricating-a-custom-holder-for-the-attachment-of-a-mandibular-sensor-of-an-optical-jaw-motion-tracking-system-a-dental-technique
#8
JOURNAL ARTICLE
Shengtao Yang, Siyu Wang, Zheqing Zhou, Dong Zhao, Quan Yuan, Li Yue
A digital approach to fabricating a custom holder to attach a mandibular sensor of an optical jaw motion tracking system is described. Typically, jaw motion tracking systems come with standard holders. However, additional chairside time is still required to adapt the holder's arm to the individual arch and securely attach the holder to the mandibular teeth. Moreover, the placement of the standard holder is problematic in patients with a deep vertical overlap or with short clinical crowns. This technique offers a digital approach to designing and fabricating a custom holder in situations where standard holders cannot be efficiently attached...
February 19, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38368144/effect-of-phosphoric-acid-containing-polyvinylpyrrolidone-as-protective-etchant-for-dentin-bonding
#9
JOURNAL ARTICLE
Yaoxin Wang, Ning Ding, Zutai Zhang
STATEMENT OF PROBLEM: Phosphoric acid is commonly used in dentistry as an etchant but can result in excessive demineralization of dentin, a major contributor to the instability of dentin-bonded restorations. Nevertheless, research on the development of etchants that can reduce acid damage is sparse. PURPOSE: The purpose of this in vitro study was to investigate the effects of polyvinylpyrrolidone-modified phosphoric acid on the dentin bonding of an etch-and-rinse adhesive...
February 16, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38365524/fully-digital-workflow-of-an-occlusal-device-including-digital-facebow-record-a-clinical-report
#10
JOURNAL ARTICLE
Anna-Sophia Voß, Oskar Bunz, Oliver Kurbad, Ralf Bürgers
In many current digital workflows for the production of occlusal devices and dentures, the traditional facebow record for the individual determination of the hinge axis has been omitted. A novel digital facebow record procedure including a scannable occlusal fork is described as a straightforward to use, cost-effective, and less time-consuming alternative to close this gap in fully digital prosthetic workflows.
February 15, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38355364/impact-of-immediate-interim-restoration-on-peri-implant-tissues-around-immediately-placed-single-dental-implants-in-the-esthetic-region-a-systematic-review-and-meta-analysis
#11
REVIEW
Aashi Godani, Janani Iyer, Jyoti Nadgere, Anuradha Mohite, Amit Gaikwad
STATEMENT OF PROBLEM: Immediate implant placement with an immediate interim restoration is a well-established protocol. Nevertheless, a consensus regarding the impact of immediate interim restoration on peri-implant tissues around single dental implants is lacking. PURPOSE: The purpose of this systematic review and meta-analysis was to address the research question: "Does the placement of an immediate interim restoration influence the mid-facial mucosal (MFM) marginal and interdental papilla (IDP) levels around single dental implants placed in the anterior esthetic region by using an immediate implant placement protocol?" MATERIAL AND METHODS: A comprehensive literature search was made in the Medline/PubMed, Scopus, Cochrane, and Science Direct electronic databases for articles published in English evaluating the impact of immediate interim restoration on peri-implant tissues around single dental implants in the anterior esthetic region...
February 13, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38342644/coordinate-based-data-analysis-of-the-accuracy-of-five-intraoral-scanners-for-scanning-completely-dentate-and-partially-edentulous-mandibular-arches
#12
JOURNAL ARTICLE
Xin Wang, Fang Zhang, Dan Ma, Xiaolan Ye, Xiaojuan Zheng, Ruifang Ren, Shizhu Bai
STATEMENT OF PROBLEM: Current methods for assessing the accuracy of intraoral scanners (IOSs) that reduce errors and provide comprehensive data compared with previous methods are lacking. PURPOSE: The purpose of this in vitro study was to present a coordinate-based data analysis method to compare the accuracy of 5 IOSs for scanning completely dentate and partially edentulous casts. MATERIAL AND METHODS: Reference scans of 2 complete arch casts (completely and partially dentate) were digitized using a high-precision laboratory scanner (Ceramill Map 600)...
February 10, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38342643/influence-of-glazing-and-aging-on-the-marginal-axial-axio-occlusal-and-occlusal-fit-of-3-unit-monolithic-zirconia-restorations-fabricated-using-additive-and-subtractive-techniques
#13
JOURNAL ARTICLE
Dilem Toksoy, Özay Önöral
STATEMENT OF PROBLEM: Studies are sparse on how glazing and aging influence the fit of additively fabricated monolithic zirconia restorations. PURPOSE: The purpose of this in vitro study was to assess the effect of glazing and aging on the fit of 3-unit monolithic zirconia restorations fabricated using different techniques. MATERIAL AND METHODS: A total of 32 monolithic zirconia restorations were fabricated for a typodont model by using 4 distinct techniques (subtractive fabrication [SF], stereolithography [SLA], digital light processing [DLP], and lithography-based ceramic manufacturing [LCM])...
February 10, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38336565/influence-of-surgeon-experience-on-implant-placement-in-guided-surgeries-a-systematic-review-and-meta-analysis-of-randomized-clinical-trials
#14
REVIEW
Jenival Correia de Almeida, Mariana Quirino Silveira Soares, Mariela Peralta Mamani, Ademir Franco, José Luiz Cintra Junqueira
STATEMENT OF PROBLEM: Guided surgical techniques in implant dentistry use virtual planning to accurately position implants. Understanding the effect of a surgeon's experience on guided surgery is essential to ensure successful outcomes. PURPOSE: The purpose of this systematic review and meta-analysis of randomized clinical trials was to evaluate the influence of a surgeon's experience on the accuracy of implant positioning in guided surgery for completely or partially edentulous patients...
February 8, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38331670/evaluation-of-two-printing-techniques-for-maxillary-removable-partial-denture-frameworks
#15
JOURNAL ARTICLE
Alwin Sokolowski, Daniel Horak, Alexander Behlau, Corina Madreiter-Sokolowski, Martin Lorenzoni, Armin Sokolowski
STATEMENT OF PROBLEM: Three-dimensional (3D) printing technology has gained popularity in producing removable partial denture (RPD) frameworks, including direct 3D printing of the metal framework and framework printing using castable resin, subsequently cast and processed. However, whether the technology is sufficiently accurate and precise to supersede traditional methods is unclear. PURPOSE: The purpose of this in vitro study was to determine the accuracy and precision of 2 different methods in the fabrication of RPD frameworks, including 3D printing by selective laser melting (SLM) and digital light processing (DLP)...
February 7, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38310063/chatgpt-performance-in-prosthodontics-assessment-of-accuracy-and-repeatability-in-answer-generation
#16
JOURNAL ARTICLE
Yolanda Freire, Andrea Santamaría Laorden, Jaime Orejas Pérez, Margarita Gómez Sánchez, Víctor Díaz-Flores García, Ana Suárez
STATEMENT OF PROBLEM: The artificial intelligence (AI) software program ChatGPT is based on large language models (LLMs) and is widely accessible. However, in prosthodontics, little is known about its performance in generating answers. PURPOSE: The purpose of this study was to determine the performance of ChatGPT in generating answers about removable dental prostheses (RDPs) and tooth-supported fixed dental prostheses (FDPs). MATERIAL AND METHODS: Thirty short questions were designed about RDPs and tooth-supported FDP, and 30 answers were generated for each of the questions using ChatGPT-4 in October 2023...
February 2, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38310062/evaluation-and-comparison-of-the-accuracy-of-three-intraoral-scanners-for-replicating-a-complete-denture
#17
JOURNAL ARTICLE
Louise Le Texier, Emmanuel Nicolas, Cindy Batisse
STATEMENT OF PROBLEM: Technological advances in digital acquisition tools have increased the scope of intraoral scanners (IOSs), including scanning a removable complete denture (RCD) to replicate it. However, studies assessing the accuracy of IOSs for replicating a maxillary or mandibular RCD are lacking. PURPOSE: The purpose of this in vitro study was to evaluate the accuracy (trueness and precision) of 3 IOSs while replicating a maxillary and mandibular RCD. MATERIAL AND METHODS: One maxillary and 1 mandibular RCD were scanned with a desktop scanner (D2000) to obtain the reference model...
February 2, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38307751/ultraviolet-c-as-a-method-of-disinfecting-medical-silicone-used-in-facial-prostheses-an-in-vitro-study-part-2
#18
JOURNAL ARTICLE
Gabriela Malateaux, Rodrigo Ernesto Salazar-Gamarra, Jefferson de Souza Silva, Vanessa Gallego Arias Pecorari, Ivana Barbosa Suffredini, Francisco Perinni Netto, Cintia Riva Neves, Isabela Rodrigues de Souza, Alfredo Mikail de Mello Mesquita, Luciano Lauria Dib
STATEMENT OF PROBLEM: Disinfection is an important factor in preserving facial prostheses and maintaining tissue health. However, whether disinfection with ultraviolet C is an effective disinfection method is unclear. PURPOSE: The purpose of this in vitro study was to evaluate the effectiveness of irradiation with different exposure durations of an ultraviolet-C light-emitting diode in the disinfection of the silicone (A-588-1; Factor II) used in facial prostheses...
February 1, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38302291/time-efficiency-and-cost-analysis-between-digital-and-conventional-workflows-for-the-fabrication-of-fixed-dental-prostheses-a-systematic-review
#19
REVIEW
Marion Bessadet, Noémie Drancourt, Nada El Osta
STATEMENT OF PROBLEM: Time and cost are factors that influence a patient's decision on dental prosthetic treatment. Evidence is needed to demonstrate that restoration using digital systems is more rapid and less costly than the conventional process. PURPOSE: The purpose of this systematic review was to analyze and compare the duration and cost of fixed dental prostheses fabricated using digital and conventional methods from scanning or impression making to delivery of the prosthesis...
January 31, 2024: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/38296761/oral-implant-rehabilitation-under-general-anesthesia-for-patients-with-cognitive-and-physical-disabilities-a-14-year-cohort-study
#20
JOURNAL ARTICLE
Marie-Sophie Bogner, Vivien Chambas, Jean-Luc Veyrune, Denise Faulks, Martine Hennequin
STATEMENT OF PROBLEM: Oral rehabilitation with implants is an alternative to the provision of removable dentures in all patients for whom missing teeth require replacement. However, individuals with cognitive, mental health issues, and/or physical disabilities are often excluded from implant-supported prostheses because of the high perceived risk of failure linked to poor oral health, presence of parafunction, or systemic conditions. PURPOSE: The purpose of this cohort study was to describe the protocols, outcomes, and survival rates of oral rehabilitation with implant-supported prostheses in patients with cognitive and physical disabilities treated under general anesthesia (GA) in a French unit of Special Care Dentistry...
January 30, 2024: Journal of Prosthetic Dentistry
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