View clinical trials related to Dental Implant Failure Nos.
Filter by:This study is a prospective randomized split mouth study intended to evaluate the healing and health of peri-implant mucosal tissue following placement of titanium abutments with or without laser-etching. Each subject will receive two implants. Following placement of the two 4.2mm diameter implants, one implant will receive (by randomization) a laser-etched abutment ('Laser-Lok'). The other implant will receive a standard, non-etched healing abutment. Subjects will be sequentially subdivided into four groups (n=5) and scheduled for a biopsy of the peri-implant tissues of both implants at either 8 weeks, 4 weeks, 2 weeks or 1 week after implant surgery. These biopsies, about the size of a grain of rice, will be analyzed using immunohistochemical and RNASeq techniques to identify molecular changes in response to laser etching. At approximately 8 weeks after implant surgery, subjects will have abutments removed from both implants and digital impressions taken for final crown fabrication. At approximately 11-12 weeks after implant surgery, final crowns will be placed. Subjects return to clinic at approximately 1 year post surgery for a final study visit to assess the peri-implant mucosa surrounding both implants as measured by bleeding upon probing, probing depth and peri-apical radiography.
Together with materials and type of retention, the stability of the implant abutment connection represents one of the key factor for the success rate of an implant supported restoration. The recent diffusion of high quality and easy to use CAD/CAM systems has contributed to market launch of a number of competing companies that offer the so called "clonical" or "compatible" restorative components. Although they are claimed to be identical, the original abutments are supposed to present maximum accuracy and consequently lower microleakage. The aim of the present randomized controlled trial will be to analyze the implant abutment junction stability comparing implant-supported crowns restored with original components and compatible non-original abutments. The hypothesis is that original components will present significantly better stability than non-original abutments.
The investigators will use two types of material(PRF-Xenograft) in the buccal gap after immediate dental implant placement. The study design has three groups PRF, graft, and control group. The patients will randomly be assigned to groups by envelop method. The resonance frequency analysis device(Osstell) will be used to measure primary and secondary stabilization. Then the investigators will evaluate each materials' contribution to stability. Pre-op and 9th month Post-op CBCTs will evaluate about bone loss in mesial-distal and horizontal dimensions.
Soft tissue attachment to the implant surface serves as a biological seal preventing the development of inflammatory periimplant diseases (i.e. peri-implant mucositis and peri-implantitis).It occurs in the presence of a biomaterial during healing of the surgical wound that might be influence by this foreign body. Myofibroblasts represent key players in the physiological reconstruction of connective tissue after injury. This work will focus on the role of myofibroblasts during the early phases of the healing process in peri-implant tissues around four different abutment materials.
To assess implant outcomes, both clinical and radiological, in a randomized study on guided implant placement after 3-year follow-up, compared to non-guided treatment.
The primary purpose of this study is to determine what effect, if any, do different dental materials used to seal the prosthetic screw channels of implant supported restorations have on dental implant health parameters and microbiology.