الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
This study was conducted on 15 dental implants placed in five patients (3 females and 2 males) selected from the Outpatient Clinic of the Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Alexandria University. Patients had missing mandibular posterior teeth indicated for ridge splitting and implant placement. The selected patients age ranged from 28-50 years old with a mean of 42 years old.
Implants were placed using the CAD-CAM stereolithographic surgical stents. This work aimed to evaluate piezotomed ridge splitting with the aid of surgical guide for implant placement.
All patients were operated under local anesthesia. The stereolithographic surgical template was checked for proper seating. A flapless approach was performed at the planned ridge splitting site. The incision and osteotomy was performed through the slot guided by the surgical stent. Drilling points of implants were initiated (guided by the surgical stent.), followed by stent removal. Expansion was then done with RS Kit (expanders) followed by implant placement and suturing.
Clinical results revealed good operating time with minimal postoperative complications. There was mild pain among two patients that lasted for 1-2 days and traces of edema among also two patients which subsided by the 2nd postoperative day.
Radiographically, the mean of total angular difference in implant with stereolithographic stent were 10.9 ± 9.4°. The Mean of total coronal differences in stereolithographic guided implant were 0.96 mm ± 0.7 mm. The Mean of total apical differences in stereolithographic guided implant were 1.8 ± 1.3 mm. In summary, the accuracy of the stereolithograpthic guides used for the current study was well accepted within the range of results reported by previous authors.
The mean bone width value immediately postoperative was found to be 7.8 ± 1.1 mm and this was statistically significant (p-value < 0.001). At 6 months postoperative the bone width value was found to be statistically insignificant in comparison to immediately postoperative value.. The immediate postoperative bone density value was found to be 1606.4 ± 227.2 HU and this was statistically significant (p-value < 0.001). At 6 months postoperative, the increase in the bone density was found to be statistically insignificant in contrast to immediately postoperative value. This clarifies that such a technique results in a significant increase in bone width and density immediately postoperative and maintains such increase with no upcoming bone resorption after 6 months postoperatively.
Also this technique represents a minimally invasive procedure avoiding large flap elevation thus preserving the periosteum for better blood supply to the alveolar ridge with minimal bleeding and postoperative complications.