الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
This study was conducted to evaluate the accuracy of the keyless sleeveless stereolithographic surgical stent and its effect on perimplant soft tissues.
The study was designed as a single armed clinical trial on ten adult patients having a missing maxillary tooth indicated for implant rehabilitation. Patients were selected from the outpatient clinic of the Oral Medicine, Periodontology, Oral Diagnosis and Oral Radiology department, Faculty of Dentistry, Alexandria University.
Implants positions were virtually planned using 3D planning software (Mimics 19) based on a preoperative CBCT. Surgical guides were designed and printed.
Implants were placed using printed keyless sleeveless stereolithographic surgical stent and immediately loaded using a prefabricated PMMA crown.
An immediate postoperative CBCT was carried out and superimposed to the virtual plan to assess the horizontal and vertical deviations of actual implants to the virtual ones.
After six weeks of the implant placement, perimplant soft tissues were evaluated:
1- The level of the interdental papillae mesial and distal to the implant was recorded using the Papilla presence index.
2- The difference of the level of the facial gingival margin around the restored implant and the correspondent contralateral tooth was measured in relation to a reference maxillary occlusal plane using Mimics Innovation Suite 19™ software.
Results showed that implants placed with keyless sleeveless stereolithographic surgical stents had minimal horizontal, vertical and angular deviations compared to the virtual plan.
These minimal deviations did not have any effect on perimplant soft tissues.