Comparison of Piezoelectric split-crest technique versus expansion using Hand Driven Ridge Expanders in treatment of Maxillary Narrow Ridges

Inclusion Criteria:

• Participants are free from any systemic diseases.
• Participant have missing one or two premolars or molars with sufficient alveolar ridge height and insufficient alveolar ridge buccolingual (BL) width that interfere with conventional straight forward implant placement.
• The minimum BL ridge width included in the study will be 3.5 mm to facilitate ridge splitting and expansion

Exclusion Criteria:

• Patients with residual infections in the edentulous areas.
• Medically compromised groups.
• Smokers and patients with poor oral hygiene.