Regenerating a predictable inter-implant papilla is the most complex and challenging aspect of implant dentistry. The aim of the study was to compare the efficacy of I shaped incision technique and conventional midcrestal incision technique for interimplant papilla reconstruction in a 6 month clinical trial.

A total of 40 implants were placed in 12 patients. Groups were determined at second stage surgery, I shape technique used in test group and mid-crestal technique used in control group. The clinical parameters, including modified plaque index, modified sulcus bleeding index, probing depth, keratinized tissue level were recorded baseline, 3 and 6 month. The vertical distance between the crests top-contact point was evaluated with digital periapical radiographs at baseline 3 and 6 month. Also the clinical photographs were taken baseline, 3 and 6 month. Two T shaped full-round hexagonal straight filaments, each 5 mm, were used in the taking of standardized images. With these images the ratio of the papilla area in proportion to the embrasure area and the papilla classification was measured. Non-parametric test were used for statistically analysis.

Inclusion Criteria:

• No sistemic condition, and age > 18 years,
• healthy soft tissue (bleeding on probing (BOP) ≤ 20%, Plaque Index ≤ 15%,
• in a need of at least two collateral implants in the maxilla from second premolar to second premolar
• sufficient keratinized tissue
• no bone augmentation procedures before implant placement
• use of tobacco 10N ≥ cigarettes daily
• sufficient distance between opposite occluding dentition at the proposed implant sites

Exclusion Criteria:

• history of aggressive periodontitis,
• systemic diseases such as diabetes
• pregnant or lactating women
• radiation therapy in the head and neck area wihtin the previous 12 months,
• heavy smokers
• bruxism.