View clinical trials related to Edentulous Jaw.
Filter by:This study is a randomized clinical trial comparing the conventional method of recording occlusal vertical dimension using Willis gauge from the base of the nose to the base of the chin with the other method using vernier caliper for the length of the index finger to access the satisfaction level of edentulous patients acquiring complete dentures.
The digital workflow in dental implantology has been used for planning the cases with the intraoral scanners and computer tomography, together helping clinicians to be more accurate and precise. Today, thanks to digital technology clinicians can plan from surgical to the final prosthesis using 3D models and cad-cam machines. The aim of this research is to validate the full digital workflow for the single-tooth implant rehabilitation. A total of 19 patients (22 implants) were included in the present study with mean follow-up time of 2 years. A full-digital workflow was performed on each patient through the design and printing of a surgical guide, the taking of the impression with an intraoral scanner and the CAD-CAM design of the crowns.
The palatal rugae, refer to asymmetrical and irregular elevations of the mucosa located in the anterior third of the palate, on each side of the median palatal raphe and behind the incisive papilla. The lack of the rugae area on the polished areas of the dentures has been suggested to impact phonetics in denture patients due to lack of tactile feedback. Therefore, the aim of this randomized crossover clinical trial was to compare patients' reported satisfaction with their complete dentures and oral health related quality of life, when provided with a denture with a rough palatal surface in the rugae area compared with a polished palatal surface or an open palatal surface.
This study aims to assess the treatment outcomes (clinical, functional and subjective) of full arch rehabilitations supported by implants with or without an immediate loading protocol. In this randomized clinical trial 20 fully edentulous patients were treated with full arch rehabilitations on dental implants. In half of the sample, the implants were loaded immediately by means of abutments after emplacement of the implant; but in the counterparts these abutments were connected to implants two months after the surgery (conventional protocol), and until that time the dentures were retained by healing abutments. Treatment outcomes were assessed at 2, 6 and 12 months after surgery. Clinical outcomes were quantified on the basis of implant failure rate, marginal bone loss and the peri-implant gingival index. Functional outcomes were calculated according to masticatory performance, estimated by the mixed fraction of a two-coloured chewing gum after 5, 10 and 15 chewing strokes, by the occlusal force recorded by pressure-sensitive sheets and by the bioelectrical muscular activity. The subjective outcomes of the treatment were assessed using both the oral satisfaction scale (visual analogue scale) and the Spanish version of the Oral Health Impact Profile (OHIP-20).
Platelet concentrates obtained from blood have been used as regenerative biomaterials in periodontal surgery. Along with the migration and proliferation of osteogenic cells, platelets accelerate bone regeneration by increasing the formation of blood vessels and inducing inflammatory reactions. Experimental studies revealed that growth factors released from platelets enhance osteoblastic differentiation on the implant surface, and enlarge the contact surface of the bone and implant. Platelet-rich fibrin (PRF), a platelet concentrate, was introduced by Choukroun in 2001, and it contains a significant amount of cytokines. Advanced-platelet rich fibrin (A-PRF), discovered in 2014, is a PRF derivative with a denser leukocyte concentration and a softer consistency. Concentrated growth factor (CGF), another platelet derivative, differs from A-PRF since it contains many concentrated growth factors trapped in a more rigid fibrin structure. It was reported that both A-PRF and CGF, obtained with variable centrifuge speeds, accelerated the proliferation and differentiation of bone cells. Stimulated osteoblasts and osteocytes initiate the remodelling process by producing macrophage colony-stimulating factor and receptor activator of nuclear factor-kappa B ligand (RANKL).Previous studies reported that TNF-α initiated bone resorption independently of RANKL.Osteoprotegerin (OPG) is a soluble cytokine receptor of the TNF family and is produced by osteoblasts, fibroblasts, and a number of host cells. OPG binds to RANKL and prevents the RANKL-RANK interaction Therefore, it inhibits osteoclastic activity. The RANKL/OPG ratio is used as an indicator for estimating bone remodelling, osteoclastic activity, or osteogenesis. The interactions among cytokines, growth factors, chemokines, and chemical mediators during blood clot formation result in a complex signalling process. High concentrations of cytokines and growth factors in the wound promote the migration of macrophages, neutrophils, and lymphocytes. Therefore, it was reported that the cytokines released from the fibrin matrix might affect those signaling pathways. In this study, investigators hypothesised that the application of CGF or A-PRF in dental implantation would contribute to inflammation, proliferation and the remodeling process. Therefore, the aim of this study was to investigate the effects of CGF and A-PRF on the osseointegration of dental implants in clinical, radiographic, and biochemical aspects.
To evaluate in a comparative way the patient's perception in implant surgery in the posterior mandibular quadrants depending on whether the operation is performed under trunk anaesthesia or infiltrative anaesthesia, in both cases with Articaine. Randomized and multicenter prospective study to be developed in eight centers with similar socio-professional characteristics, with the same operative protocol. A significant sample of patients will be randomized to undergo the same intervention (surgery to place implants in the posterior mandible) under one or another type of anesthesia (inferior alveolar block nerve or infiltrative) and data will be collected using a Numerical Rate scale on four occasions (after the incision, after drilling, after suturing and after 12h).
Purpose: Evaluation of patients' satisfaction, biting force measurement and radiographic evaluation of abutment teeth of tooth implant supported bridge, unilateral attachment and conventional partial denture in mandibular distal extension cases. Materials and methods: Twenty four patients were selected and divided into three equal groups, each of eight patients: patients of group I Patients received a fixed tooth implant supported bridge, patients of group II Patients received a removable unilateral attachment partial denture and group III Patients received a conventional removable partial denture.Evaluation included patient satisfaction and biting force measurement radiographic evaluation of terminal abutments.
The study population comprises 20 completely edentulous patients aged 60 years and older with severe mandible resorption. Each patient receives two inter-foraminal implants (Neoss Ltd., Harrogate, UK). Following randomization, implants are loaded either immediately after dental implant surgery or three months after implant placement with the Locator®-abutment system. At follow-up visits 3, 6 12, 24 and 36 months after loading, implant stability is evaluated with Periotest® and Ostell®.
Purpose: To determine if adjustment of full-arch zirconia frameworks processed on a model obtained with an intraoral scanner and an auxiliary device is not inferior to that of identical frameworks obtained from an elastomeric impression. Materials and methods: Eight consecutive patients ready for a full-arch rehabilitation on already osseointegrated implants were selected. Two sets of impressions were taken, one open tray with polyether and splinted impression copings and a second one with an intraoral scanner. A verification plaster jig was used for the elastomeric impression and a prefabricated auxiliary device was used to adjust the optical intraoral impressions. Two full-zirconia frameworks with the same design were processed and tested on the patient by two independent calibrated operators. Accuracy of both frameworks was measured by calibrated blinded operators, who determined tactile adjustment, Sheffield test, radiographic adjustment, and screwing torque. Overall perception of adjustment was used to determine the better framework to be delivered to the patient. Hº: Frameworks obtained from an impression taken with an intraoral scanner are not inferior in accuracy to those obtained from a conventional elastomeric impression
This will be a prospective, observational multicenter study. All implants will be placed in the anterior maxilla or mandible and immediately loaded with a provisional prosthesis out of occlusion. Final restorations insertion will take place no later than 6 months following implant placement surgery. All implants will be restored with a single crown or splinted to a pre-existing implant if in the pre-molar region (no 2 adjacent edentulous sites).