الفهرس 
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Abstract
Localized ridge defects are frequently found in partially edentulous patients that impair the prosthetic restoration of the damaged ridge area, causing aesthetic, phonetic, and oral hygiene complications. These defects are associated with the deficit in the volume of bone and soft tissues within the alveolar process resulting from tooth extractions, external trauma, and tumors. The extent of the defect may include soft tissue, bone, or combination. Topographical aberrations in the residual edentulous ridge often prevent the establishment of an ideal pontic-to-ridge relationship, and in such cases, residual ridge augmentation surgery may be indicated.
Different surgical procedures are used for the reconstruction of deformed, partially edentulous ridges. Grafting tissues and materials available for soft tissue augmentation are classified as autogenous, allograft, xenograft, and alloplast. The classic procedures using autogenous soft tissue materials could be classified into 3 major groups: - free gingival grafts (FGG), subepithelial connective grafts (SCTG), and various types of roll and pedicle flaps.
This study aimed to compare modified pedicle roll flap with subepithelial connective tissue graft in soft tissue augmentation in the maxillary esthetic zone.
Twenty healthy participants with class I ridge defect according to Seibert classification were equally divided and randomly allocated to the test and the control groups. The test group consisted of ten patients and received modified pedicle roll flap, and the control group consisted of ten patients and received free subepithelial connective tissue graft. Alginate impressions were taken presurgical and 3 months after surgery and poured into cast models. These casts were scanned and superimposed to determine the volume of soft tissue gained. Pain, healing, and patient discomfort were also evaluated.
The results of the study revealed that there was greater volume gain with the modified pedicle roll flap in comparison to the sub-epithelial connective tissue graft 3 months after surgery. Moreover, the modified pedicle roll flap caused less pain and discomfort than the subepithelial connective tissue graft. Furthermore, the modified pedicle roll flap has a faster healing time than the subepithelial connective tissue graft clinically.