The research will be conducted to report which type of surface treatment of dental implants that can be successful and aids in increasing bone to implant contact and how it affects the bony changes around the implants installed in mandibular arches for completely edentulous patients or whether there are specific precautions to be taken into consideration during implant planning concerned with the type of surface microstructure treatment and recommendations needed.

Primary objective:

PICO P: Completely edentulous patients I: Laser surface treatment of implants C: Sandblasted Acid etched surface treatment O: Bony changes

Each Participants will have 2 implants;one laser surface treated implants and another sandblasted acid-etched implant (split-mouth) installed in the intra-foraminal area of mandibular arch prosthetically driven by the prepared conventional denture. MS and AF are responsible for delayed-loading of the denture and will measure bony changes around laser treated surface implants using radiographic assessment using long paralleling technique periapical digital x-ray(SOREDEX™ DIGORA™ Optime)

Inclusion Criteria:

• Completely edentulous patients
• Angle's class 1 skeletal relationship
• Normal facial asymmetry
• Cooperative patients
• Adequate inter-arch spcae not less than 12mm

Exclusion Criteria:

• Tempromandibular joint disorder
• Uncontrolled diabetes
• Bleeding disorders or anticoagulant therapy
• Flabby tissues or sharp mandibular residual ridge
• Heavy smoker
• Patient's with neuromuscular disorders
• Patients on chemotherapy or radiotherapy
• Severe psychiatric disorders