View clinical trials related to Dental Prosthesis Failure.
Filter by:The One tooth - One time (1T1T) innovative approach is a straightforward and cost-effective protocol to replace a missing tooth in the posterior region (Lambert and Mainjot 2017) (see Appendix). The digital impression of single unit implants right after the implant placement and the direct manufacturing of a Polymer-Infiltrated Ceramic Network (PICN) screw-retained crown allows the delivery of a final tooth in occlusion within the same day. The absence of lab procedures reduces the number of appointments, providing immediate results and high patient satisfaction. The prosthesis material choice is crucial in this procedure. Indeed, PICN high resilience, i.e. damping effect, could reduce peri-implant strain compared to ceramic materials (Magne, Silva et al. 2013) (Maminskas, Puisys et al. 2016), moreover its elastic modulus is close to tooth tissues, while other CAD-CAM composites value is too low and ceramic materials are too high. The rapid milling and manufacturing process, without any firing procedure, and the ease of adjustments (particularly to adjust proximal and occlusal contact points), make also PICNs well-adapted to chair-side systems. The material low stiffness and hardness can improve patient comfort and promote adaptation of the restorations to occlusal relationships with time. The 1T1T approach was presented as a proof of concept in a first international publication using tissue level implants from Straumann, which describes the whole protocol (Lambert and Mainjot 2017). Currently, a case series including 10 teeth is on-course, showing a 100% survival rate of implants and restorations after a 2-yr follow-up. These results are very promising but further clinical research is needed to validate such a protocol on a larger number of patients, on other implant systems as well as to compare this approach to conventional protocols.
This is a randomized, single-blind, split-mouth clinical trial to evaluate the performance of peri-implant tissues (bone and soft tissues) in conventionally loaded Galimplant implants, using a classic multi-position, anti-rotational abutment, comparing it to the new multi-abutment aesthetic slim anti-rotational placed both at the time of the implant surgery. To this end, 80 Galimplant implants with a diameter of 4 mm and 10 mm in length will be placed in areas of mature scarred post-extraction bone. Patients be divided into 2 study groups, group C: straight pillar; Group T: Slim pillar. The bone and clinical radiological stability of the peri-implant tissues will be evaluated at 6 weeks post-surgery and at 6-12 months post-prosthetic loading.
This is a randomized triple-blind clinical trial to evaluate the behavior of peri-implant tissues (bone and soft tissues) in BLX implants loaded early or delayed and with different surgical milling protocols. To this end, 40 BLX implants with a diameter of 3.75x10 will be placed in areas of mature bone scarred after extraction. They will be divided into 2 study groups, and these in turn into two subgroups. Group A: complete milling, Group B: partial milling. Each group will be assigned with code 1: early load and code 2: deferred load. Clinical and radiological parameters will be evaluated.
The aim of this randomized controlled trial is to compare peri-implant tissue health, number of complications, and patient's preference between two unsplinted overdenture attachments.
This study evaluates the success rate, as the biological and prosthesis complications, of posterior single-unit implants immediately loaded with a chair side Computer-Aided Design and Manufacturing (CAD-CAM) composite crown, after a follow-up period of 6 months,1,2,3,4 and 5 years. Complementary ex vivo analyses will be performed to evaluate the wear of restorations. The time and cost benefit of the presented digital workflow, as patient centered outcomes will also be evaluated.
The purpose of this research study is to identify reasons that cause an all-ceramic bridge to fracture which include the thickness of the bridge material, the type of bridge material and the bite force of the person. This all-ceramic bridge will be compared to a metal-ceramic bridge. The investigators are conducting this study so we can make bridges which can withstand forces in the mouth which tend to break them. The overall objective of this research is to analyze how properties of ceramic materials and different forces in the mouth interact with each other to affect the longevity of these bridges. These include fracture toughness, elastic modulus of ceramic layers and supporting substrate, core thickness, connector height, wear, loading orientation, and maximum clenching force.
The purpose of this study is to compare three different core build-up materials for dental use. The study hypothesis is that there is no differences in survival rate of the different core build-ups.