Trephine osteotomy was used for lateral sinus lifting technique associated with sinus floor augmentation using the autogenous bone resulting from implant drilling using specialized trephine drills.

The study includes 14 patients in whom the lateral sinus lift technique was performed using the trephine osteotomy with simultaneous implant placement.

Sinus floor augmentation with autogenous bone graft resulting from implant site preparation with trephine drills.

Implant stability and rate of complications such as Schneiderian membrane perforation and bleeding will be assessed.

Patients will also provide their subjective assessment of postoperative pain and swelling. Vertical bone height, that will be gained, will be assessed radiographically

Inclusion Criteria:

• Patients of both genders requiring implant placement in the posterior maxilla.
• Age between 20-50 years.
• Tooth extractions at the implant sites were performed at least 4 months before surgery.
• Residual bone height between the alveolar bone crest and the sinus floor ranges from 4 to 6 mm.
• Patients who are willing and fully capable to comply with the study protocol

Exclusion Criteria:

• Maxillary sinus pathologies (sinusitis, long standing nasal obstruction)
• Any disease contraindicating surgery (e.g. uncontrolled diabetes)
• Heavy smokers
• Acute oral infections
• Poor oral hygiene
• A history of radiotherapy or chemotherapy of the head and neck region