View clinical trials related to Dental Implant Failed.
Filter by:Implant placement in the posterior part of the maxilla is frequently compromised due to atrophy of the alveolar process. Therefore, alveolar ridge augmentation is frequently necessary before or in conjunction with implant placement. The most commonly used method to augment the maxillary premolar and molar region involves the maxillary sinus floor augmentation (MSFA) with autogenous bone graft or a bone substitute. However, the use of autogenous bone grafts is associated with risk at the donor site morbidity and unpredictable graft resorption. Consequently, short implants are used increasingly to eliminate the need for bone augmentation. However, long-term studies comparing short implants and standard implants in conjunction with MSFA supporting single crown restoration in the posterior maxilla are missing. The primary outcome measures include survival of implant and suprastructures, peri-implant marginal bone level (MBL), professional evaluation of the suprastructure and soft tissue using pink esthetic score (PES) and white esthetic score (WES), patient satisfaction using visual analogue scale (VAS), and oral health related quality of life using oral health impact profile (OHIP-14) questionnaire. Secondary outcome measure include evaluation of the complication rate related to the two treatment modalities.
This study aimed to evaluate the clinical complications that might be presented with osteotome and densah burs, as well as to assess the new bone generated at 6 months post-operatively using CBCT. The study hypothesis was that densah bur would show comparable results to osteotome-mediated sinus lifting
Studies evaluating the use of customized healing screws/abutments in immediate implant placement have been performed, aiming to assess possible advantages with the use of this treatment modality. Despite the existence of these investigations, there is a lack of information regarding a digital approach to evaluate in an objective manner soft and hard tissue dimensional changes at this treatment modality.
Implant retained overdentures are a cost-effective treatment for elderly patients suffering from complete tooth loss. Despite the high success rate of implants in the general population, older adults lacking all teeth are a challenging population for implant therapy, often presenting limited bone disponibility, narrow alveolar ridges, diminished bone density, scarce inserted gingiva and several co-morbidities.Thus, improving their possibility of success in implant therapy avoiding further surgical interventions is key. Platelet-rich fibrin (PRF) is a blood derivate that can be easily and economically obtained from patients and that has shown promise of reducing the complications and improving the success of implant therapy, nevertheless its benefits in patients receiving implant retained overdentures has not been stablished. It is possible that PRF can improve the results and diminish the complications of implant therapy in older adults. The investigation aims to demonstrate that the use of platelet-rich fibirn (PRF) is safe and beneficial for implant treatment in older adults suffering from complete tooth loss.
Survival and success rates of all-ceramic implant-supported fixed reconstructions fabricated with CAD/CAM technology after at least one year in function. Survival and success rates (clinical, radiologic and esthetic) of all-ceramic implant-supported fixed reconstructions fabricated with CAD/CAM technology after 2 to 10 years in function. Establishment of a database of patients with all-ceramic implant-supported fixed reconstructions fabricated with CAD/CAM technology for future longitudinal retrospective studies.
The aim of this study was to compare the influence of the abutment height and insertion timing on early marginal bone loss (MBL) in posterior mandibular partial implant-supported restorations. Material and methods: The study was planned as a prospective, randomized, controlled parallel group including subjects in need of two implants for the restoration of an edentulous posterior mandibular area. Data were gathered on age, gender, attached gingiva height, bleeding on probing (BoP), smoking habits and previous periodontitis. The patients were allocated into three groups: Group A implants were immediately connected to 2 mm height abutments; Group B implants were immediately connected to 1 mm height abutments; Group C implants were left to heal in a sub-mucosal position and 2 mm abutments were inserted in a second stage surgery. Peri-apical radiographs were taken at the implant surgery (baseline), 4 weeks after surgery (T1), 16 weeks after implant placement at the final restoration delivery (T2) and 1-year after implant placement (T3).
Introduction: In order to minimize postoperative morbidity and failures of dental implant therapy, several antibiotic regimens have been proposed in the literature. However, the extensive use of antibiotics in health care has been debated due to the adverse effects and bacterial resistance. Furthermore, the impact of preoperative antibiotics on peri-implant bone level is still not clear. Objectives: The primary objective of this study will be to assess whether giving preoperative antibiotics (azithromycin 500mg) after implant placement over 7 days will influence peri-implant crestal bone levels after 4 months in healthy patients undergoing platform-switched implant placement. The secondary objectives will be to evaluate postoperative pain severity, surgery-associated morbidities, and 1-year implant survival rate. Methods: Fifty individuals will be recruited in a double-masked 2-arm randomized clinical trial. Participants in the intervention group will receive 500mg of azithromycin 1 hour before implant placement. Participants in the control group will take one placebo 1 hour preoperatively. The changes in mesial and distal crestal bone level (primary outcome) will be measured at baseline and 4-month follow-up using standardized periapical radiographs. Pain severity and surgery-associated morbidities (secondary outcomes) will be evaluated by clinical examinations and self-administered questionnaires. Implant survival rate will be assessed at the 1-year follow-up. Descriptive and bivariate analyses will be used to analyze the data. A P value ≤ 0.05 will be considered statistically significant. Clinical relevance: This study will be the first placebo-controlled double-blinded randomized clinical trial studying the effect of preoperative azithromycin on radiographical, clinical and patient-based outcomes after implant surgery. This type of design will reduce as much as possible the risk of bias and increasing the quality of evidence. The results from this study might help provide guidelines for clinicians that will optimize implant survival rate while decreasing antibiotics exposure to patients undergoing straightforward implant surgery.
The aim of this study was to evaluate the early and late implant loss rate in a sample of patients who had received implant-supportive restorative therapy in a university setting. Moreover, the study aimed to identify patient- and implant-related variables for implant failure
The objective of this study is to compare two surgical techniques for the treatment of the maxillary and mandibular bone atrophies.. Therefore, the main purpose is to compare the (i) the percentage of post-operative complications (ii) the three-dimensional bone gain with customized titanium meshes (test group - the medical device is digitally designed and made with customized laser sintering modality, customized to the defect of each patient) and with titanium-reinforced PTFE mesh (control group - the medical device is cut, shaped, and manually modelled to the patient's defect by the operator himself.
The convenience sample to be included in the present study will consist of all individuals who had implants installed at the Dentistry Clinic of the University Santo Amaro, between the years 2004 and 2010. The following criteria will be evaluated: age; sex; presence of systemic disease; area in which the implant was installed; implant diameter and height; type of prosthesis installed; presence of bone resorption and annual maintenance.