Good quality soft tissue determines the possibility not only to obtain full primary wound closure during the bone defect reconstruction, but also assures effective implant treatment and stability of peri-implant condition.Moreover, it is very important to assure the proper emergence profile of the implant supported restorations, which give the opportunity to achieve the highest aesthetic appearance. In the long-term, the correct width and thickness of the attached keratinized tissue is the key point to ensure the stable position of the mucosal line around the implant's neck. The promising outcomes of laser on soft and hard tissue have been demonstrating in a variety of studies. Therefore, the aim of this clinical study is to evaluate the efficacy of LLDLT on enhancing osseointegration and on the peri-implant mucosal tissue around delayed dental implants.

Inclusion Criteria:

• Patients are systemically medically free.
• Ability to maintain good oral hygiene as evidenced in recall visits.
• Sufficient mesiodistal and interocclusal space and have an intact buccal bone contours which does not require bone augmentation procedures.
• Adequate bone quality.
• Keratinized tissue ≥ 2mm.
• Thickness of the gingiva ≥ 1 mm.

Exclusion Criteria:

• Presence of any systemic disease that could influence the outcome of the therapy.
• Presence of any risk factor e.g.; smoker, pregnant, lactating patients or any disease affect bone healing.
• Previous history of periodontal surgical treatment in quadrant selected for the study.
• Restorations or caries in the area to be treated and non-vital tooth.
• Adjacent teeth are tilted or rotated.
• Patients taking medications known to cause affect bone quality.
• Traumatic occlusion or Para-functional habits such as clenching or bruxism.
• Participation in other clinical trials.