James Kohner, DDS, is a Denver-based periodontist. A national and international lecturer with more than 35 years of clinical experience, he teaches hands-on surgical training workshops on crown lengthening, soft tissue grafting, and periodontal surgery for the Perio Institute (Perio.com), dental school continuing education programs, and at association meetings in the United States and Canada. He can be reached at JamesKohnerDDS@gmail.com.
Inadvertently placing crown margins too close to the bone and impinging on the soft tissues of the biologic width can cause complications, but clinicians can avoid such sequelae with crown lengthening.
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