Loading clinical trials...
Loading clinical trials...
Showing 1-11 of 11 trials
NCT06043037
The current trial aim was to evaluate clinically and radiographically the changes around dental implants inserted immediately in maxillary anterior esthetic zone using a novel combination of autogenous demineralized dentin graft (ADDG) with socket shield technique (SST) and compared this approach to socket shield technique (SST) alone. The present study included 50 participants, aged 20 to 45, with teeth that needed to be extracted. After Kafrelsheikh University research ethics committee approval, participants were randomized into 2 groups: the control group patients underwent immediate implantation using SS protocol, while the study group patients underwent the same procedure, but ADDG was created using the extracted palatal portion of the tooth; and then placed in the peri-implant gap defect.
NCT06020040
After implant restoration, the surrounding tissue, including the gingiva and alveolar bone, will inevitably reconstruct. The study found that gingival recession was easy to occur in the aesthetic area of upper anterior teeth within 1 year after implantation, which was mainly due to the absorption of labial alveolar bone. In order to avoid absorption, the thickness of the labial bone plate should not be less than 2mm, which is difficult to achieve in the anterior tooth area. Therefore, guided bone regeneration (GBR) should be performed in the implant area, which can provide more than 5mm bone increment in the vertical and horizontal positions with long-term stability, being beneficial for the maintenance of the buccal contour and the stability of the soft and hard tissues in the aesthetic area. In this study, the inorganic bone matrix extracted from bovine bone (Geistlich, Gegreen, Haiao, etc.) was used for GBR in the area with insufficient bone volume in the anterior dental implant area. The commercially available xenogeneic bone graft substitutes can be divided into large particles (1-2mm) and small particles (0.25-1mm) according to the particle size. Previous studies have found that in 6 months after implantation, the change of vertical bone height around the implant (i.e. the height from the top of alveolar ridge to the shoulder of the implant) is related to the particle size of bone powder, and large particles of bone powder may have better performance in maintaining the vertical bone height due to the following reasons: 1. Large bone particles may show better mechanical properties and better mechanical compression resistance. 2. Large bone particles may show more reasonable pore size and porosity, which may provide better environment for the growth of new bone. 3. Large bone particles may achieve more reasonable and balanced bone remodeling. However, the effect of bone particle sizes on the maintenance of soft and hard tissue around the bone graft area is still inconclusive. Thus, the purpose of this study is to compare the effects of large and small bone particle sizes on the stability of soft and hard tissues around the bone graft area within 3 years after implant restoration in the anterior tooth area.
NCT06029751
Nowadays, artificial intelligence technology with machine learning as the main means has been increasingly applied to the oral field, and has played an increasingly important role in the examination, diagnosis, treatment and prognosis assessment of oral diseases. Among them, machine learning is an important branch of artificial intelligence, which refers to the system learning specific statistical patterns in a given data set to predict the behavior of new data samples \[8\]. Machine learning is divided into two main categories: Supervised learning and Unsupervised learning. Whether there is supervision depends on whether the data entered is labeled or not. If the input data is labeled, it is supervised learning. Unlabeled learning is unsupervised. Supervised learning is a kind of learning algorithm when the correct output of the data set is known. Because the input and output are known, it means that there is a relationship between the input and output, and the supervised learning algorithm is to discover and summarize this "relationship". Unsupervised learning refers to a class of learning algorithms for unlabeled data. The absence of label information means that patterns or structures need to be discovered and summarized from the data set.
NCT06590753
The present study will be performed to : evaluate the effect of two implant placement systems )conventional method and osseodensification method) radiographically on bone density and bone height surrounding the implant by using CBCT and clinically by probing depth and gingival index.
NCT05276765
One of the major challenges one clinician can face while performing immediate placement on posterior area, is the ability of obtaining a hermetic primary closure of the soft tissue. The use of socket sealing abutment may provide advantages in maintaining the existing soft tissue architecture, preserving crestal bone height and reducing the risk of premature loading of the immediate implant during healing
NCT06446687
This study aims to evaluate the quantity and quality of the native and the newly bone around dental implants that's simultaneously installed with sinus lifting
NCT06254885
The aim of this randomized clinical study is the evaluation of the peri-implant mucosal tissues and the marginal bone level, after positioning the transition shoulder from the intraosseous to the transmucosal portion, with an equicrestal position (at the level of the bone crest) or subcrestal (under the bone crest level).
NCT05973357
Multiple clinical studies have established high survival rates and tremendous predictability of dental implant treatment. However, a pleasant esthetic outcome is the patient's primary expectation regarding implants in the esthetic zone and several esthetic factors have been evaluated to contribute to an esthetic appearance. Among these, the midfacial soft tissue level is considered to be one of the most important factors; Cosyn and co-workers reported that among factors including soft tissue phenotype, the midfacial recession was associated with the position of the implant . Therefore, subcrestal implant placement has been advocated as it has been associated with the reduction of crestal bone loss in cases with decreased soft tissue thickness. If the vertical soft tissues on the crest of the alveolar ridge are 2 mm or less at the time of implant placement, implants will undergo unavoidable bone resorption by establishing sufficient biologic protection. Another option was proposed by Linkevicius et al, who introduced the subcrestal implant placement as a method to accommodate the problem of thin soft tissues. Research question: Does the placement of delayed implants with different vertical depth affect the marginal bone loss with immediate provisionalization?
NCT04230837
The aim of the present study was to evaluate the peri-implant crestal bone level around implants placed 1.5 mm subcrestally, with a 1 mm or 3 mm definitive abutment height at the time of implant placement after 1 year. Patients were selected from the Department of Periodontology at Universitat Internacional de Catalunya. X-rays were taken at the time of implant placement, 8-12 weeks after placement, after screwing the provisional rehabilitation and at 12 months. An examiner indicated the crestal marginal bone level, the marginal bone level of the implant, and the marginal bone level of the abutment . The examiner, independent to the study, carried out the radiographic analysis using the Image J software on periapical radiographs.
NCT03743545
ASSESSMENT OF LOW SPEED DRILLING WITHOUT IRRIGATION VERSUS CONVENTIONAL DRILLING WITH IRRIGATION REGARDING HEAT GENERATION AND PERI-IMPLANT MARGINAL BONE LOSS
NCT03664219
Evaluation of the neurosensory disturbances after inferior alveolar nerve lateralization with and without isolation of the simultaneously placed implants using collagen membrane And measuring the stability of implants after placement .