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Study aim
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Evaluation of clinical and radiographic conditions of implants placed with closed sinus lift technique with and without bone graft
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Design
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Clinical trial with control group, double-blind, randomized, on 40 patients. A random number table was used for randomization using closed envelopes
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Settings and conduct
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A total of 40 patients in need of implants in the posterior maxilla region with a minimum bone height of 5 mm referred to prosthodontics and implant dentistry, Mashhad Dental School, are selected for the study. Patients are randomly sorted into two groups of closed sinus lifts with and without bone graft materials by a random number table. The closed sinus lift surgical procedure for both groups is as follows: before the implant is placed, the Sinus lift is closed. Then, in one group, the bone graft material is used simultaneously as elevating the sinus lift. In the other group, this procedure is performed without the graft material, and then the implant is placed. Dental CBCT images are taken before surgery and six months after surgery. In addition, PA radiographic images are also taken before surgery, instantly after surgery, 3and 6 months later. Bone height is measured and evaluated at different distances with those images.
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Participants/Inclusion and exclusion criteria
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Inclusion criteria:
1. Patients over 18 years of age
2.The missing tooth in the posterior maxillary area
3. At least 5 mm bone height
exclusion criteria:
1.Having a Medical contraindication for implant surgery
2.Rupture of the sinus membrane during surgery
3.Implant loss
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Intervention groups
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In the intervention group, the bone graft is placed concurrently with elevating the sinus in a closed method to increase the thickness and height of the bone, and then an implant is placed.
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Main outcome variables
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vertical bone gain, pain, swelling