View clinical trials related to Dental Implant Failed.
Filter by:The aim of the study is to determine the efficacy of modified piezosurgery with osseodensification drills in expanding narrow alveolar bone.
Introduction: To evaluate the survival and success rate of premolars with a previous root canal treatment which underwent to non-surgical retreatment or to extraction and implant replacement. Materials and methods: Patients visiting in the Clinical Endodontic Section of the School of Dentistry (University of Bologna) were eligible for the study. Out of these patients, those with previously root canal treated premolars fulfilled the inclusion criteria. Teeth were considered retreatable and restorable (Endo group) or not retreatable and not restorable (Implant group) on the basis of clinical and radiographical examination. Each patient was included in an annual recall programme and final evaluation was performed after 8 years. Clinical parameters were recorded. Differences in baseline characteristics between the two treatment groups were assessed using logistic regression analysis with clustered standard errors. Results were expressed for each variable as odds ratios (ORs) of implant rehabilitation to root canal retreatment with 95% confidence intervals (CIs). Survival and treatment success for the two study groups were estimated using the Kaplan-Meier method. The association of treatment group with time to event was assessed using Cox proportional hazard regression analysis with clustered standard errors to allow for intragroup correlation within teeth belonging to the same patient. Results were expressed as hazard ratios (HRs) of experiencing the study event among implants as compared to root canal retreatments with 95% CIs.
Implant stability is critical to successful osseointegration, the direct structural connection between the dental implant surface and bone. Implant stability must therefore be measured to evaluate implant success. The study evaluated the osseointegration of different sizes with two devices measuring stability with different methods.
This study is conducted A- To investigate that PRF loaded with osteopromotive pharmacological drug can be a great aid in implant rehabilitation, and whether it could be a replacement for the other high price bone graft materials or not. This will be done through: 1. Measuring bone changes around the implant by cone beam 2. Measuring change in bone density around the implants B- Evaluate the effect of statins on osteoblasts activity and expression of various osteogenic products in vitro.
Digital panoramas will be made to assess the implant sites. The included patients are assigned to their respective groups randomly. After implant submerging in the study group 2 layers of hemostatic resorbable gelatin sponge is fixed in the implant site; while with the control group PTFE is fixed. After 3 weeks the PTFE was removed while the gelatin sponge should be resorbed. 3 months later the implants are to be assessed for stability and a reverse torque test was used to confirm osseointegration during uncovering. Follow-up appointments at 1,3 weeks and 1,2 & 3 months were planned.
Alveolar ridge expansion is suggested for alveolar crest thicknesses of 3-5 mm. Osseodensification (OD) and screw expansion (SE) techniques have been utilized to expand narrow alveolar ridges (NAR). This study aims to compare the implant stability quotient (ISQ) values of endosteal dental implants (DIs) inserted into NAR via osseodensification versus manual screw expansion.
The health of peri-implant soft tissues is important for the long-term success rate of dental implants and the surface topography is pivotal in influencing it. Thus, the aim of this study was to evaluate, in human patients, the inflammatory mucosal microenvironment in the tissue surrounding a new, nanoscale, laser-treated healing abutment characterized by engineered nanopores versus a standard machined-surface. The prospective clinical study will evaluate the effect of the presence of a laser-etched surface in the coronal portion of healing stumps in forming the coronal seal and reducing the accumulation of bacterial plaque around it. The screws will serve as their own control group since they have both a laser-etched and a smooth portion. Primary objective: To evaluate the adhesion of fibroblastic cells from the peri-implant mucosa on the surface of the healing stump through scanning electron microscope analysis, expressed in terms of the area covered by the cells. Secondary objectives: To evaluate the amount of bacterial adhesion around healing stumps with a laser-etched and smooth altered surface through scanning electron microscope analysis, expressed in terms of the area covered by the cells. To evaluate the presence of hemidesmosomal structures through the expression of α-6 and β-4 integrins. To evaluate bacterial adhesion on healing screws. To evaluate the healing of peri-implant soft tissues through clinical indices, such as Plaque Index and Gingival Index. The healing period was 12 ± 4 weeks (T1) before the second surgical procedure, during which all healing abutments were placed. To prevent allocation bias among patients, each healing abutment was designed with two surfaces that alternated between laser-treated/machined and ma-chined/laser-treated. The experimental healing abutment was removed after 30 ± 7 days, which coincided with the soft tissue biopsy.
The objective of this retrospective study with 5-year follow-up was to compare crestal bone loss (CBL) and buccal bone thickness (BBT) around triangular cross-section neck (TN) to round neck (RN) implants retaining mandibular overdentures, using cone-beam computed tomography
Objectives: Inflammatory lesions develop in the tissues surrounding implants are referred to as peri-implant diseases. Oxidants, play a role in inflammatory lesions. The study aimed to determine oxidant and antioxidant levels in the saliva of patients with various levels of peri-implant diseases and the relationship between oxidative stress and peri-implant diseases. Material and methods: Sixty-seven patients with at least one dental implant applied in our clinic were included in the study. The patients were divided into 3 groups; with peri-implantitis (PI), with marginal bone loss (MBL) and with healthy peri-implant (HI) tissues. Twenty-one individuals who didn't have any dental implants were included the study as a healthy control group (HC). For oxidant concentration, total oxidant status (TOS), advanced oxidation protein products (AOPP), and for antioxidant concentration, total antioxidant status (TAS), were investigated.
Various risk factors defined in the literature should be eliminated in order for the patient to be able to use implant-supported prostheses for a longer period of time. In the literature, such a diagram for peri-implant risk factors was first described by Heitz-Mayfield in 2020. The scheme that will determine the peri-implant risk diagram is called "Implant Disease Risk Assessment (IDRA)". This tool provides evaluation of various risk factors on a single diagram. In this study, peri-implant risk diagrams will be determined by calling the patients who have previously completed implant treatment in Kütahya University of Health Sciences Faculty of Dentistry Department of Periodontology, and the change in the risk profile assessment will be re-evaluated after the risk factors that can be eliminated are eliminated. In this study, it is aimed to predict the risk of inflammation and alveolar bone loss of the tissues around the implant that may occur in the future in patients who have undergone dental implant treatment, and to evaluate the risk profiles.