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Maxillary Sinus clinical trials

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NCT ID: NCT06376708 Completed - Maxillary Sinus Clinical Trials

Comparison Between PEEK With Platelet-rich Fibrin and PEEK Alone in Maxillary Sinus Augmentation

Start date: September 1, 2022
Phase: N/A
Study type: Interventional

comparison between the resulted bone during maxillary sinus elevation by PEEK with and without platelet rich fibrin

NCT ID: NCT06265467 Completed - Clinical trials for Alveolar Ridge Augmentation

Evaluation of Two Different Techniques for Sinus Elevation, Open Versus Closed .

Start date: January 1, 2022
Phase: N/A
Study type: Interventional

A clinical Trial, comparing two different techniques to elevate the maxillary sinus floor membrane to allow for simultaneous dental implant placement in the severely atrophied maxillary ridges.Both using allogenic bone substitute as the bone graft material. One technique is the open lateral window technique and the second is the closed crestal technique.

NCT ID: NCT05957705 Completed - Dental Implants Clinical Trials

Maxillary Sinus Augmentation With Xenogeneic Bone Graft Associated or Not With Fibrin Rich in Platelets and Leukocytes Produced by Horizontal Centrifugation: A Randomized Clinical Trial.

Start date: March 17, 2021
Phase: N/A
Study type: Interventional

The objective of study is to evaluate the influence of the use of Platelet Rich Fibrin (PRF) from the patient's produced by a new horizontal centrifugation protocol associated with particulate xenogenous bone graft in the rehabilitation of atrophic maxillary sinus for early osseointegrated implants plancement. In a split-mouth model, twelve patients in need of rehabilitation with at least two bilateral implants in the regions of atrophic maxillary sinus will simultaneously undergo bone reconstruction using deproteinized particulate xenogenous bone (Bio-Oss Small®; Geistlich AG, Wolhusen , Switzerland). Randomly, one of the surgical sites of each patient will be reconstructed using the associated technique of solid PRF + Liquid PRF with the xenogen material, where at the end of the grafting procedure, both sites will be protected by a collagen membrane (Bio-Gide® Compressed; Geistlich AG, Wolhusen, Switzerland) positioned over the surgical access of the maxillary sinus. During the research, cone-beam computed tomography scans will be performed preoperatively, immediately after surgical procedure, 3 months after maxillary sinus reconstruction, after immediate implants placement and 12 months after functional load of the implants for comparative volume measurement of tissue gain and the maintenance of the grafted tissue. During the implant surgery, bilateral biopsies will be collected after 4 months of the regenerative surgical procedure during the early dental implants surgery by virtually guided surgery. The stability of the implants will be measured by means of resonance frequency analysis (ISQ) after the immediate postoperative period and 6 postoperative months as the clinical success rates of the implants after 12 months with functional load. The tissue samples will be used for histological, histomorphometric, immunohistochemistry and microtomographic analysis. All data obtained will be statistically analyzed.

NCT ID: NCT05922410 Not yet recruiting - Maxillary Sinus Clinical Trials

Different Maxillary Sinus 3D Shapes Assessment Using CBCT Volumetric Segmentation

Start date: August 1, 2023
Phase:
Study type: Observational

the study aims to assist the different 3D shapes of maxillary sinus in adult individuals among Egyptian population,The data collection will be obtained from the data base available at the department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Cairo University. CBCT images will be obtained from Egyptian patients who were referred to the CBCT unit in oral and maxillofacial radiology department for different purposes. The following radiographic examination will be done in Oral and Maxillofacial Radiology Department, Faculty Dentistry, Cairo University. semiautomated segmentation will be performed for the maxillary sinus in both side and then linear and 3D volume will be assessed for each sinus.

NCT ID: NCT05907083 Not yet recruiting - Maxillary Sinus Clinical Trials

Sexual Dimorphism of Sphenoid and Maxillary Air Sinuses Via 3D Volumetric Segmentation of CBCT

Start date: August 1, 2023
Phase:
Study type: Observational

Sexual dimorphism from skeletal remains a crucial step towards biological profile reconstruction since these are some of the last structures to remain after death. Paranasal sinuses remain intact even in extreme situations and are able to resist adverse environmental conditions due to their unique properties. The maxillary sinus is the largest of all paranasal sinuses and is considered as characteristic entity like human fingerprints for each person. Also, sphenoid air sinus is located deeply in the skull and is enveloped by different structures inside the sphenoid body. It is the least possibly affected by external deteriorating factors. Owing to limited research on the Egyptian population on the role of 3D volumetric assessment of paranasal sinuses in forensics, this study will be designed to investigate the significance of the volume of both sphenoid and maxillary sinuses in sexual discrimination.

NCT ID: NCT05847777 Not yet recruiting - Maxillary Sinus Clinical Trials

Correlation Between Maxillary Sinus (Linear and Volumetric Measurements) and Midface Width Using CBCT

Start date: August 1, 2023
Phase:
Study type: Observational

The objective of this study will be To assess the correlation of the 2-D and volumetric maxillary sinus dimensions with the linear measurement of the mid-face width in adult Egyptian individuals. The data collection will be obtained from the data base available at the department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Cairo University. CBCT images will be obtained from Egyptian patients who were referred to the CBCT unit in oral and maxillofacial radiology department for different purposes. The following radiographic examination will be done in Oral and Maxillofacial Radiology Department, Faculty Dentistry, Cairo University. semiautomated segmentation will be performed for the maxillary sinus in both side and then linear and volumetric measurements will be assessed for each sinus. Also the width of midface will be assessed.

NCT ID: NCT05777239 Completed - Dental Implant Clinical Trials

Dental Implant Approach for Crestal Sinus Elevation; A Novel Technique.

Start date: January 1, 2020
Phase: N/A
Study type: Interventional

Vertical bone height reduction after extraction in the posterior maxilla is inevitable and complicates the treatment plan. Crestal sinus elevation, using implants and different grafting procedures are considered some of the proposed treatment protocols. Ever since the introduction of implant dentistry and implant placement in the posterior maxilla has been a dilemma. The choice of the type of bone, anatomical landmarks and reduced remaining bone height are all obstacles faced when placing implants in this area. Vertical bone height reduction occurs post extraction of the maxillary molars and premolars by maxillary sinus pneumatization. Many protocols were suggested to overcome this phenomenon; placing short implants, 2nd premolar occlusion and finally maxillary sinus elevation. A recent systematic review evaluated osteotomes mediated sinus floor elevation with or without grafting material. It concluded a high long term survival rate in both procedures, however only one comparative study was used in the analysis that involved 12 participants only. Another systematic review assessed the survival of implants placed with lateral versus crestal sinus approach in 4-8 mm ridge height. It concluded that the ability of the less invasive crestal sinus approach to replace one-stage lateral approach, however, only one randomized control trial was presented that involved 4o patients, and were followed-up for 5 years. This emphasizes the gap of knowledge in literature with high quality evidence concerning these approaches. The purpose of the present study is to evaluate the radiographic vertical gain in bone height as well as the implant stability after implant placement without the use of bone grafts in posterior maxilla following sinus elevation using the crestal implant approach technique.

NCT ID: NCT05315791 Recruiting - Maxillary Sinus Clinical Trials

Clinical Application Strategies of Maxillary Sinus Buccal Bony Window

Start date: March 10, 2022
Phase: N/A
Study type: Interventional

Through randomized controlled trials, investigators will recruit participants who need maxillary sinus floor elevation with different residual bone height, and utilize the maxillary sinus buccal bony window during the surgery. Then investigators will gather the related information of participants, collect and analyze their CBCT data, in order to help surgeons select the best operating method for different patients.

NCT ID: NCT05134753 Not yet recruiting - Maxillary Sinus Clinical Trials

PRF Versus Advanced PRF in Sinus Augmentation

Start date: January 30, 2022
Phase: Phase 3
Study type: Interventional

In the present study the main hypothesis , Advanced PRF will improve the bone quality and quantity in sinus augmentation

NCT ID: NCT04510701 Completed - Maxillary Sinus Clinical Trials

Videoscope-assisted Lateral Maxillary Sinus Floor Elevation: Evaluation of the Schneiderian Membrane for Micro-tears

Start date: November 1, 2020
Phase:
Study type: Observational

This case series will recruit patients who require lateral maxillary sinus floor elevation surgery. This procedure will be carried out as per standard surgical protocol. The periodontal resident performing the surgery will evaluate the Schneiderian membrane at several points during the surgery to determine its integrity (beyond visual inspection). This will be completed by using the videoscope to evaluate the membrane. This evaluation will take place at at least 3 points during the surgery (before membrane elevation, half-way through membrane elevation, and prior to initiating bone grafting procedures). If the resident wishes to evaluate the membrane at other points during the surgery to inspect the integrity of the membrane, this may be accomplished. This evaluation will be recorded for later, further evaluation by experienced periodontists. If no visible perforation is evident, a 1% baby shampoo solution in normal saline (Johnson and Johnson) will be applied topically over the membrane prior to videoscope evaluation. At this point, the patient will lightly blow their nose; if any micro-tears not visible to the naked eye are present, these tears will produce a bubbling effect, which will be recorded by the videoscope. This evaluation will take place with the 1st and 2nd videoscope evaluations (before membrane elevation, and mid-way through elevation). Patients will be asked to complete a VAS questionnaire at their one-week follow-up appointment in order to determine how post-op healing has been progressing. After all procedures have been performed, three experienced periodontists will individually evaluate the videos post-surgically. They will evaluate each video and determine if, in their opinion, there is a membrane perforation (yes/no). Each video will be evaluated in a random fashion (each video being evaluated as a separate event, and not by case). The evaluating periodontists will also be masked to the results noted by the surgeon who completed the surgery, and blinded to the patient's information.