Old Orchard Periodontics is the professional in Crown Lengthening Periodontal Service in Wilmette. Crown lengthening is a common periodontal surgery that is completed to elongate or show more of the crown of the tooth. Our professional team of dentists The crown of the tooth is that the part that shows above the gum line. within the crown lengthening procedure, the periodontist removes gum and/or bone tissue to point out more of the crown. Our motto is to form your smile attractive.