Active clinical trials for "Tooth Loss"

Tooth replacement is a significant issue in the World. Such replacement is considered important by patients to improve aesthetics, function and quality of life. Tooth replacement is therefore a significant issue. Resin-bonded bridges (RBBs) are conservative and cost-effective tooth replacement option that involves minimal tooth preparation and are secured in place with an adhesive cement by bonding to the outer enamel layer of the tooth. Clinical reports of these prostheses at the University of Hong Kong shows some of the highest success rate and greatest longevity in the dental literature. However, a problem with this type of prosthesis in that it still needs some tooth preparation to accommodate the framework thickness of the bridge. In some patients with tooth wear, this may mean cutting through the enamel crown down into dentine which will weaken the tooth. In light of the tooth preparation some patients will refuse this treatment, in particular patients with dental drill phobias. The aim of this study is to investigate RBBs with tooth preparation and with no tooth preparation for the replacement of single missing teeth in a randomized controlled trial. However, a significant consequence of a no preparation RBB will mean that after cementation the prosthesis will interfere with the patient's bite, making the bridge prosthesis stand high. This will take time for the patient's original occlusion to re-establish itself by the movement of the tooth supporting the bridge. Despite the success of "supra-occluding" restoration has been reported in some studies, currently neither no preparation nor supraoccluding dental bridges are the standard of care for general dental practitioners and have not been reported on as a clinical trial in the literature. Most symptoms reported for supraoccluding restorations were transient and are reversible. The findings of this research will have significant impact on the teaching and practice for clinical prosthodontics and patient care worldwide. Patients will have a dental prosthesis that requires no dental drilling, no local anaesthetic and will have a stronger tooth supporting the bridge that should have greater longevity. More patients, in particular phobic patients will therefore seek treatment for tooth replacement with this conservative treatment option.

First, Participants in this study will be recruit according to inclusion criteria. Proper examination for the participants (clinically and radiographically). Preparation for abutment tooth for Resin bonded fixed partial denture. Checking and verification for the restoration (trying). Clinical assessment and survival evaluation of the final restoration on delivery and on follow-up every 12 weeks for 12 months.

Loss of teeth leads to loss of function and lack of normal alveolar growth, along with unpleasant esthetics that hamper the psychosocial development of the young child. Traditionally, the management of single tooth loss in a young child is done by conservative means. The presence of large pulp chambers in incompletely mineralized immature teeth of children predisposes the pulp to loss of vitality in cases of complete coverage restorations . Hence, the clinician resorts to partial coverage prostheses such as Maryland Bridge, resin-bonded restorations, or removable prostheses in cases of multiple missing teeth. None of these treatment methods are completely satisfactory and have their drawbacks. Partial dentures are dependent on the child's compliance. They increase the rate of decay and may cause gingival disease leading to bone resorption. Furthermore, there is a need to refabricate a new prosthesis from time to time to compensate for craniofacial growth. Mini-screw implant placement in a young child would be an ideal method of treatment for the absence of teeth. They restore the function, preserve the alveolar bone, and give excellent esthetics, restoring the child's confidence and social acceptability. Parents are usually keen to get this treatment done as soon as offer the suggestion. To our knowledge, there is no previous study that compared the two techniques. The limited evidence shows that mini-screw implants supported pontics are useful transitional restorations for missing permanent maxillary incisors in children and adolescents; however, further well-designed clinical trials are needed in this regard. As a result, this study will be conducted to fill the gap of knowledge.

Background Adaptation of a dental implant and its restoration to the existing anatomy in the region of a missing tooth is presumed to be a reliable procedure. During the follow-up it appears that peri-implant bone level is stable, peri-implant soft tissues are healthy and patients are satisfied with the result. However, the number of 10-years studies on implants in the posterior region of maxilla and mandible is limited and much more studies with longer follow-up periods are needed to confirm the positive outcomes. Main research question The primary objective of the study is marginal bone level changes by radiological assessments at 10-years follow-up. Secondary objectives are implant and restoration survival, condition of peri- implant mucosa and patients' satisfaction. Design The study design is an observational study of a group of patients which were treated 10 years ago with a dental implant and an implant-supported restoration because of a missing tooth in the posterior region. Outcomes: primary outcome is the change in marginal peri-implant bone level 10 years after placing the definitive restoration. Secondary outcome measures will be implant and restoration survival, peri-implant mucosa health and patients' satisfaction using a questionnaire. Expected results Stable peri-implant bone levels, stable peri-implant soft tissue levels, high implant and restoration survival rate and satisfied patients.

This research compares a chairside Titanium Mesh frame fabrication used during bone grafting procedures with the use of a computer-aided design/computer-assisted manufacture (CAD-CAM) Titanium Mesh frame. In addition, a novel method of measuring soft tissue thickness will be tested using an Optical scanner at various times during the sequence of surgeries. The device used for shaping is a very thin, perforated titanium metal sheet with numerous small perforations (referred to as Micromesh). The construction of this device is usually accomplished chairside at the time of the surgery with custom cutting and shaping done using cues from the geometry of the surgical defect. An alternative approach will be tested where the mesh is pre-designed using digital information provided by a special xray and an optical scan device which takes a digital impression of the tooth and soft tissue surface. A digitally designed frame can then be printed using CAD-CAM software prior to surgery. This should reduce surgical time. A randomized control trial of 30 patients needing 3-D bone augmentation will be conducted comparing chairside fabrication of Ti-MESH or TEST- CAD-CAM designed and preprinted Ti-MESH to investigate these objectives: Compare the operative times required for placement and removal of two different Ti-MESH frame fabrications Compare post-op wound healing -Ti MESH exposure rates, bone production (volume, contour, and quality) and soft tissue thickness changes during the 1-year study period.

immediate implant placement with VST technique versus early implant placement with contour augmentation in fresh extraction sockets in the esthetic zone.

The goal of this clinical trial is to compare the placement accuracy in immediately placed implants using dynamic navigation between deep-threaded and regular-threaded implants in partially edentulous patients. The main question it aims to answer is: is there a difference in implant placement accuracy between deep-threaded and regular-threaded implants using dynamic navigation? Participants will receive implants placed immediately under dynamic guidance. Researchers will compare type of implant thread (Straumann BLT versus Straumann BLX) to see if there are significant differences in placement accuracy.

Straumann Monotype FullCeram implants serve as a suitable alternative for implant therapy especially in the aesthetic zone The survival rate of Straumann Ceramic implants should be at least 85% (max 6 implant losses out of 40 patients) after the first year

A dental implant is an alloplastic material surgically inserted in a residual bone ridge, mainly with a prosthetic foundation. Nowadays the most widely used implants and with a higher degree of scientific evidence are the titanium root-form endosseous implants. In addition to the root component, the prosthodontic systems that allow the crown to be connected to the implant are very important. The aim of this project is to compare a classic anti-rotational straight esthetic multi-position attachment with the new anti-rotational straight esthetic slim multi-position abutment, both placed at the time of implant surgery. A multicenter randomized single-blind (for the patient) split-mouth randomized clinical trial will be performed to compare the composition, distribution and structure of the peri-implant tissues around the classic straight (control) and Slim (test) intermediate prosthetic abutments of the manufacturer Galimplant (Sarria; Lugo, Spain). The objective is to study which abutment design obtains a better biological seal from the clinical and histomorphometric point of view. For this purpose, 60 dental implants will be placed for the replacement of bilateral posterior absences in 30 patients attending the Master of Oral Medicine, Oral Surgery and Implantology of the University of Santiago de Compostela, Spain.

Patients who had had systematic periodontal treatment (antiinfective treatment with subgingival debridement under local anaesthesia and if required periodontal surgery) at the Dept. of Periodontology starting from October 2004 are re-examined 10 years +/- 12 months after accomplishment of active periodontal therapy (re-evaluation 1 or 2, start of supportive periodontal treatment) until 100 patients have been enroled. Radiographs (periapicals or panoramics) from start of treatment should be available.