الفهرس 
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Abstract
This study was conducted for the purpose of comparing between osteotomies performed with piezoelectric drilling and osteotomies performed with conventional surgical drilling, for placement of implants in the maxillary arch (clinical and radiographic study)
The study included 10 patients selected from the Out-patient Clinic of the Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Alexandria University. Their ages were from 30-50 years.
All patients had undergone implant placement in both sides of the maxillary arch at the same time , where one side represented the study side (implant was placed using Piezotome) and the other side represented the control side (implant was placed using the supplier surgical kit).
Patients were Assessed through clinical and radiographic assessments immediately post-operative, at 3 months and at 6 months.
Assessments included:
• Measurements of the Implant Stability Quotient (ISQ) values using Osstell device.
• Measurements of peri-implant marginal bone loss.
• Measurements of post-operative pain and edema throughout the first week of the healing period
The study results showed the following:
First: Clinical results
The procedures used in the study showed that the ISQ values in the study group (piezotome) were significantly higher than the ISQ values in the control group (conventional drills) throughout the healing period.
There were no statistical difference between both groups regarding post-operative pain and edema.
Second: Radiographic results
The peri-implant marginal bone loss values were lower in the study group compared to the control group at 3 and 6 months with a statistical significant difference.