Quality Resource Guide l Pre-Prosthetic Periodontal Surgery 1st Edition 6 www.metdental.com Reducing soft-tissue thickness - In cases of excessive sink depth (distance from the implant platform to the gingival margin), subsequent thinning of soft-tissue volume while maintaining an adequate zone of keratinized tissue should be considered, especially in cases with severely limited prosthetic space and significant thickness of overlying soft tissues. One notable rationale for soft-tissue reduction is the availability of attachments of sufficient height. That is, if the sink depth is high, an increased height of prosthetic attachments or abutments may be required. If such abutment heights are unavailable, the thinning of soft tissue in cases with excessive soft-tissue volume could allow for shorter implant attachments, which, in turn, will increase available prosthetic space. 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Biologic and clinical considerations can positively impact the outcomes of oral reconstruction. All members of the dental treatment team should understand the considerations to achieve optimal results.