View clinical trials related to Mouth, Edentulous.
Filter by:According to data from the World Health Organization, approximately 160 million people worldwide are edentulous. The incidence increases with age, and the proportion of edentulous patients is higher in the population aged 60 and above. Loss of teeth or edentulism can affect facial appearance, causing people to feel self-conscious and loss confidence in social situations, and even lead to psychological illnesses. Therefore, edentulous patients not only pay close attention to the recovery of oral function but also attach great importance to facial contour improvement. For a long time, due to technological limitations, clinicians have been unable to depict the changes in facial contour after implant placement for patients before surgery. However, with the development of artificial intelligence technology, deep learning-based methods for predicting soft tissue facial deformation have made this mission a possibility. This study established a multi-modal dataset for edentulous patients before and after implant restoration to lay the foundation for predicting facial contour changes after implant treatment. A graph generative adversarial network based on multi-modal data was proposed to achieve fast and high-precision facial contour prediction. To address the common challenges of slow computation and excessive computational resource consumption in current triangular mesh deformation simulation methods, this project innovatively proposed a graph generative adversarial network that uses multi-modal data and incorporates self-attention mechanisms to achieve fast and high-precision facial contour prediction for edentulous patients after implant restoration.
The study was a prospective, multicentre, randomized parallel controlled clinical trial. Randomisation was conducted by central randomisation, with random allocation codes generated by the main central computer. Enrollment was conducted by competition between different centres. In this study, the coronal, apical and angular deviations (mean, standard deviation, median, quartiles, minimum, maximum, 95% confidence interval) of the static template and dynamic navigation group guided implant placement were calculated. The data is proposed to be analysed using a mixed linear effects model.
A total of 34 participants, who require replacement of an anterior or posterior single tooth with dental implant, will be randomly allocated to two equal sized groups. In the control group, the osteotomy site preparation will be prepared by using conventional surgical drills, while the test group site preparation will involve the use of Densah™ Burs (Versah Co., LLC., USA) as per the osseodensification protocol. In addition to evaluating implant stability, the trial will also report on implant and patient outcomes at various time points.
24 patients with missing premolar teeth and healed sockets will be recruited. They will be randomized into two groups to supplied with tissue-level (n=12) or bone-level (n=12) 10-mm long 4-mm wide zirconia implants. Primary and secondary stabilities will be measured with International Stability Quotient (ISQ) device. After 3 months, ceramic crowns will be supplied. Implant survival rates and parameters in relation to periimplant soft-tissues and bone health and anatomy will be recorded and evaluated after 1, 3 and 5 years.
The aim of the current study is to assess the effect of two types of attachments (Locator, Novaloc) on the supporting structures both mechanically using stress strain analysis and biologically through measuring bone height using cbct.
The goal of the present randomized clinical trial is to assess the long-term osseous and peri-implant soft tissue changes as well as the success rate of short implants (6 mm) with a converging collar with micro threads or a diverging polished collar placed in the esthetic zone of the maxilla on partially edentulous patients. The main questions it aims to answer are: - what are the long-term bone and soft tissue changes around implants with a converging collar with micro threads compared to a diverging polished collar placed in the esthetic zone of the maxilla? - What is the success rate of implants with a converging collar with micro threads compared to a diverging polished collar placed in the esthetic zone of the maxilla? Dental implants with a converging collar with micro threads or a diverging polished collar will be placed in the esthetic zone of the maxilla of the included participants and the measurements regarding the bone and soft tissue level will be compared.
This is a randomized controlled study that aims to compare the accuracy between full-guided with guide-pin-assisted free-hand dental implant surgeries. The basis of evaluation in each case is the comparison of the preoperative digital plan with the actual postoperative status.
The goal of this cross-over clinical trial is to investigate the precision of digital implant impressions using an intraoral scanner and photogrammetry in obtaining complete-arch implant-supported scans. The main question[s] it aims to answer are: - Is there a difference in precision between intraoral scans and photogrammetry in obtaining digital implant scans? - Will arch perimeter and jaw type (maxilla vs. mandible) affect the precision results? Procedures: At each appointment, participants existing permanent/temporary prosthesis or healing caps were unscrewed and temporarily removed for the period of the consultation appointment. Scanbodies were screwed into their implants for the duration of the appointment. They underwent two types of digital implant impression procedures (five times each), including intraoral scan and photogrammetry. Intraoral and extraoral photography were taken. At the end of each appointment, the scanbodies were removed, and existing bridge/healing caps were reinserted. The procedures were not painful or required any form of local anesthetic Comparison group: Researchers compared the precision of intraoral scanning vs. photogrammetry to see which device provided the best precision outcomes.
This study is designed as a Prospective Randomized Clinical Trail, Evaluate the effect of osseodensification technique on primary stability in comparison to the conventional drilling technique in immediate single fresh extraction sockets.
The purpose of this study was to assess the effect of Bio-Hpp versus Co-Cr custom abutments in fixed-detachable implant-supported mandibular partial dentures clinically and radiographically in Class I Kennedy classification (split-mouth study)