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Dental Implant Failed clinical trials

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NCT ID: NCT06412380 Completed - Postoperative Pain Clinical Trials

Influence of Insertion Torque and Bone Type on Post-operative Pain

Start date: December 1, 2019
Phase: N/A
Study type: Interventional

The objectives of this clinical study were to assess the effect of different ITs and bone types on POP levels and survival rates and to investigate the effect of different patient- and site-related factors on POP levels and survival rates.

NCT ID: NCT06294171 Completed - Clinical trials for Dental Implant Failed

Efficacy of Modified Piezosurgery Alveolar Bone Cut With Osseodensification Drills in Expanding Narrow Alveolar Bone

Start date: November 15, 2022
Phase: N/A
Study type: Interventional

The aim of the study is to determine the efficacy of modified piezosurgery with osseodensification drills in expanding narrow alveolar bone.

NCT ID: NCT06250114 Completed - Clinical trials for Dental Implant Failed

Retreat or Replace: Retrospective Investigation on a Cohort of Local Patients

Start date: January 12, 2008
Phase:
Study type: Observational

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.

NCT ID: NCT06099834 Completed - Clinical trials for Dental Implant Failed

Evaluation of Osseointegration Process of Dental Implants

Start date: September 14, 2018
Phase: N/A
Study type: Interventional

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.

NCT ID: NCT06016218 Completed - Clinical trials for Dental Implant Failed

Effect of Local Application of Simvastatin Versus Bone Powder on Implant Bone Changes

Start date: January 5, 2021
Phase: Phase 1/Phase 2
Study type: Interventional

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.

NCT ID: NCT05982353 Completed - Clinical trials for Dental Implant Failed

Gelatin Sponge VS PTFE Membrane for Socket Sealing After Immediate Implant Placement

Start date: June 1, 2022
Phase: Phase 1
Study type: Interventional

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.

NCT ID: NCT05895903 Completed - Clinical trials for Dental Implant Failed

Alveolar Ridges Expansion Using Osseodensification Versus Screw Expansion Technique

Start date: December 15, 2021
Phase: N/A
Study type: Interventional

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.

NCT ID: NCT05754970 Completed - Clinical trials for Dental Implant Failed

Clinical, Prospective, Non-profit, Non-pharmacological Study on Geass Healing Abutment: Microbiological, Histological, and Immuno-histochemical Evaluation.

Start date: November 1, 2018
Phase: N/A
Study type: Interventional

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.

NCT ID: NCT05739461 Completed - Clinical trials for Dental Implant Failed

The Effect of Triangular Neck Design on Crestal Bone Loss

Start date: September 22, 2022
Phase:
Study type: Observational

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

NCT ID: NCT05724706 Completed - Oxidative Stress Clinical Trials

An Evaluation of Salivary Oxidant and Antioxidant Levels in Peri-implant Health and Disease

Start date: September 1, 2016
Phase:
Study type: Observational

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.