Background: The maintenance of marginal bone integrity around dental implants continues to be a clinical challenge. It is still unclear whether loading multiple implant-supported prostheses that have different implant connections influences bone resorption.
Objectives: The aim of this in vitro study was to compare stress distribution around residual edentulous ridges supported by external hexagon (EH) and Morse taper (MT) implants with screw-retained frameworks obtained with the use of different methods.
Material And Methods: Three-element implant-supported prostheses with distal cantilevers were manufactured according to different techniques of obtaining the framework: LAS - framework sectioned and welded with a laser; TIG - framework sectioned and welded with tungsten inert gas (TIG); and CCS - framework obtained using a computer-aided design/computer-aided manufacturing (CAD/CAM) system. Occlusal and punctual loading (150 N) was applied to the cantilevers. In the photoelastic stress analysis, the fringe orders (n) were quanitified using the Tardy method, which calculates the maximum shear stress value (τ) at each selected point.
Results: High stress around the implants and tightening were observed in the TIG group, mainly in the crestal bone region for the EH and MT implant connections. The LAS and CCS frameworks exhibited lower stress for the MT connection under occlusal and punctual loading.
Conclusions: The comparative analysis of the models showed that the MT connection type associated with the laser-welded or CAD/CAM frameworks resulted in lower stress values in the crestal bone area, suggesting the preservation of bone tissue in this region.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.17219/dmp/153060 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
FULL ARCH TREATMENT OF ATROPHIC EDENTULOUS MANDIBLE USING SHORT IMPLANTS WITH IMMEDIATE LOADING: CASE REPORT.
J Oral Implantol
December 2024
Department of Post-Graduation, Latin American Institute of Dental Research and Education (ILAPEO), Curitiba, Paraná, Brazil.
Full-arch implant rehabilitation in extremely atrophic edentulous mandibles is still challenging due to the high risk of fracture and the limited bone availability. The approach proposes using short implants with immediate loading for final prostheses as a treatment option, which offers shorter treatment times and fewer invasive procedures. A 66-year-old female patient with an edentulous mandible and severe alveolar bone resorption was treated with four short implants in the interforaminal area.
View Article and Find Full Text PDFEffectiveness of CAD-CAM Milled Versus DMLS Titanium Frameworks for Hybrid Denture Prosthesis: A Narrative Review.
J Funct Biomater
December 2024
Department of Prosthodontics and Restorative Dentistry, College of Dentistry, Majmaah University, Al Majmaah 11952, Saudi Arabia.
This narrative review aimed to evaluate the effectiveness of computer-aided design (CAD), computer-aided manufacturing (CAM) milled, and direct metal laser sintering (DMLS) titanium frameworks in hybrid denture prostheses. A structured PICO analysis and a review of ten publications were used to compare titanium frameworks for hybrid dentures made through milling, DMLS, and CAD-CAM milling. Prosthesis success, bone loss, patient satisfaction, framework fit, and biofilm adhesion were among the outcome indicators.
View Article and Find Full Text PDFFixed Full-Arch Implant-Supported Restorations: Techniques Review and Proposal for Improvement.
Dent J (Basel)
December 2024
Department of Implant-Prosthetic Therapy, Faculty of Dentistry, "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania.
Full-arch zirconia restorations on implants have gained popularity due to zirconia's strength and aesthetics, yet they are still associated with challenges like structural fractures, peri-implant complications, and design misfits. Advances in CAD/CAM and digital workflows offer potential improvements, but a technique that consistently addresses these issues in fixed, full-arch, implant-supported prostheses is needed. This novel technique integrates a facially and prosthetically driven treatment approach, which is divided into three phases: data acquisition, restoration design, and manufacturing/delivery.
View Article and Find Full Text PDFFull-mouth rehabilitation of a patient with implant-supported fixed dental prostheses using CAD-CAM frameworks.
Prim Dent J
December 2024
Ilser Turkyilmaz DMD, PhD Associate Dean of Digital Innovation, Professor and Chair, Department of Comprehensive Care, School of Dental Medicine, Case Western Reserve University, Cleveland, Ohio, USA.
Conventional complete denture wearers often complain of lack of stability and overall discomfort with their prostheses. The advent of dental implants and advanced prosthetic methods have greatly improved this struggle for edentulous patients. The utilisation of computer-aided design and computer-aided manufacturing (CAD-CAM) technology has only further enhanced the capabilities of dental practitioners to rapidly and accurately restore edentulism.
View Article and Find Full Text PDFRetrospective clinical follow-up of implants placed in edentulous jaws after computer-guided surgery and immediate loading, in geriatric patients.
Med Oral Patol Oral Cir Bucal
December 2024
Med Oral Patol Oral Cir Bucal
Background: Although there are many works analyzing the clinical behavior of immediate loading of implants inserted by guided surgery, the literature referring specifically to elderly patients is scarce. The aim of this investigation is to present the clinical outcomes of immediate loading of implants inserted by guided surgery in geriatric patients with edentulous maxilla.
Material And Methods: The clinical data of 20 elderly patients with edentulous jaws are analyzed retrospectively.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!