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NCT07162727
Aim \& Objectives: The aim of the present study was to clinically and radiographically evaluate the efficacy of titanium foil and collagen membrane in ridge augmentation. Patients and methods: 18 subjects participated in this study. One site in each subjects was randomly assigned into each of the following experimental groups; Test group: ridge augmentation with titanium foil and control group: ridge augmentation with collagen membrane. Radiographic parameters included bone height, bone width and bone density. Evaluations of these parameters were performed after 3 months and 6 months by using Dentium Rainbow software \& \[reg\]. Clinical parameters included the evaluation of Early Healing Score (EHS) during post operative healing period at 1 week and 1 month.
NCT05584566
This is a prospective randomized controlled parallel trial. The aim of this study is to evaluate bone formation and soft tissue healing after 4 and 8 months in patients with ridge deficiencies in simultaneous implantation approach. The trial will compare a (sugar cross linked) - SCL pericardium membrane OSSIX® Breeze vs native pericardium membrane (Jason®).
NCT06388837
The aim of the study: was to evaluate whether mandibular symphysis Onlay autogenous bone graft mixed with Injectable PRF could offer any advantages for patients undergoing horizontal alveolar ridge widening regarding increase alveolar ridge width compared to mandibular symphysis Onlay autogenous bone graft mixed with Xenograft
NCT06177899
The goal of this clinical study is to investigate the effectiveness of the split-box technique in systemically healthy, non-smoking, over 18 years of age, participants with narrow crests (\<5mm bone width) and adequate bone height (\>12mm). The main questions it aims to answer are: * The primary objective of the present study is to investigate the effectiveness of the split-box technique by evaluating the change in width and height of the alveolar bone. * The secondary objective is to evaluate the superiority of the split-box technique and its modifications in terms of the amount of bone gain. According to the 3D topography of the alveolar ridge of the patients before augmentation, split box or one of its modifications, reverse split box or sliding split box techniques were selected and applied. (split box was applied if the bone thickness was more than 3 mm at the top of the crest and did not increase towards the lower border at the alveolar bone, reverse split box technique was applied if the bone thickness was more than 3 mm at the top of the crest and increased towards the lower border at the alveolar bone, sliding split box was applied if the bone thickness was less than 3 mm at the top of the crest but the bone thickness increases towards the lower border at the alveolar bone.)
NCT05731063
10 patients having deficient anterior maxilla will be recruited and a preoperative CBCT will be done to evaluate the vertical and horizontal dimensions of the intended alveolar ridge. pre-operative manufacturing of the digital surgical guides performed for Harvesting of the chin cortical bone struts from the symphysial area in the donor site and for Placement of the grafted cortical bone struts and the implant in the recipient site. Intra operatively the donor site (Chin) will be prepared to harvest autogenous bone from the chin aided by the patient's prefabricated bone harvesting guide. The recipient site (Maxillary anterior defect) will be prepared to receive the chin grafts. Grafts will be screwed in position and implants will be screwed in its preparation until it gains primary stability from basal bone, using the prefabricated bone fixation-implant placement guide. Any gaps will be filled with autogenous bone particulates from the chin. A healing tie base Abutment will be screwed into the implant through the third cortex. Primary stability will be assessed using Osstell device. An immediate postoperative CBCT will be done and superimposed on the preoperative CBCT to measure accuracy of plan transfer to make sure the planning was followed accurately. Follow up after 6 months and CBCT will be done for bone formation and density assessment and implant exposure for implant stability measurement-using osstell and removal Healing abutment and consecutive prosthetic loading.
NCT05624697
10 Patients having horizontally deficient anterior maxillary areas will be recruited and a preoperative CBCT will be done. The plan is to graft the defective ridges with simultaneously placing dental implants using a PEEK shell that will be specifically designed, constructed and 3D printed to act as a surgical guide for osteotomy drilling and implant placement as well as housing both the implant and the sticky bone (using a mixture of autogenous bone harvested from the symphysis area and xenograft both mixed with plasmatic matrix); that will be added to augment the defective ridge; the PEEK shell will also act as a barrier membrane for Guided Bone Regeneration and will add more stability to the placed implants that will be fixed to the PEEK shell occlusally with a Ti - based abutment. Primary stability will be measured using Ostell and an immediate postoperative CBCT will be done and superimposed on the preoperative CBCT and an accuracy of plan transfer will be measured to make sure the planning was followed accurately. Then 6 months later, another CBCT will be done to check the bone gain and quality and a second surgery will be done to remove the PEEK shell and proceed with the conventional implant prosthetic phase.
NCT04720495
Fourteen patients having anterior maxillary undercut defect were selected to match a list of inclusion and exclusion criteria. The participants were randomly allocated using a computer system into two groups: Group A undergo inverted U-shaped maxillary ridge splitting using piezotomes with simultaneous implant placement in the same surgery. Group B undergo inverted U-shaped maxillary ridge splitting as a first stage and after four weeks, ridge expansion and implant placement will be performed with only envelop flap. Assessment included measurements of bone gain at the undercut defect and bone density labial to implants in each group from the cone-beam computed tomography
NCT03879967
Clinicians are increasingly faced with the challenge of reconstructing the alveolar ridge as more patients desire fixed implant-supported restorations. Reconstruction of large horizontal alveolar defects still remains a challenge in implantology. Although autogenous blocks from intraoral sites are proven effective for such defects, donor site morbidity and limited graft availability are major limitations. Allogenic bone blocks have been proposed to overcome these limitations, however, the outcomes reported in the literature are inconclusive. In this case series, the efficacy of allogenic blocks for lateral augmentation of atrophic ridges was evaluated, over a three-year period. In nineteen edentulous sites from ten patients, cortico-cancellous allogenic blocks (PHOENIX, TBF, France) were shaped to the defect and screw-fixated. A double-layer of autogenous chips and demineralized bovine bone (Bio-Oss, Geistlich Pharma AG, Switzerland) was used to fill the voids. The augmented site was covered by non-cross-linked collagen membrane (Bio-Gide, Geistlich Pharma AG, Switzerland). After a healing period of 9 months, implants were placed and CBCT analysis was performed post-implantation. Following a period of 34 months of function (range 22 to 44 months), patients were clinically and radiographically re-examined.
NCT01399775
1. Evaluation of dimensional changes in alveolar ridge following immediate implantation compared to delayed implantation 2. evaluation of the effect of gap dimensions between socket walls and dental implant in implant stability