الفهرس 
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Abstract
Aim of the Study
Evaluate the effectiveness of soft tissue augmentation procedures using the modified roll flap in transforming thin gingival biotype into a more stable thick biotype.
Conclusion
Based on the findings of the present work, the following could be concluded:
1- Thin peri-implant gingival biotype is more liable to recession few months after the abutment connection.
2- Soft tissue augmentation using MRF is an effective and feasible method for transforming thin peri-implant biotype into a thick one.
3- Thick peri-implant gingival biotype would be the best guarantee to high esthetic outcome for the dental implant restoration than thin gingival biotype.