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Subclassification and Clinical Management of Extraction Sockets with Labial Dentoalveolar Dehiscence Defects Subclassification and Clinical Management of Extraction Sockets with Labial Dentoalveolar Dehiscence Defects

Author(s):

Stephen J. Chu, DMD, MSD, CDT;Dennis P. Tarnow, DDS;Guido O. Sarnachiaro, DDS; Mark N. Hochman, DDS

Date Added:

8/5/2015


Summary:

Immediate implant therapy involving implants placed into intact Type 1 extraction sockets has become a consistent clinical technique. The classification of Type 2 extraction sockets, where the mucosal tissues are present but there is a midfacial osseous dehiscence defect, has been described according to the extent of the buccal bone plate absence. The literature has offered different techniques in the treatment of Type 2 sockets; however, the extent of the defect has never been defined or delineated. In this article, the authors describe a subclassification of Type 2 sockets: Type 2A presents with a dehiscence defect roughly 5mm to 6mm from the free gingival margin (FGM) involving the coronal one-third of the labial bone plate; Type 2B presents with a dehiscence defect involving the middle onethird of the labial plate, approximately 7mm to 9mm from the FGM; and in Type 2C the dehiscence defect involves the apical one-third of the labial osseous plate roughly 10mm or greater from the FGM. The authors also offer a protocol and technique employing immediate implant placement, guided bone regeneration, and bone graft containment with a custom two-piece healing abutment that can lead to consistent and satisfactory clinical outcomes in low-smile-line patients. The treatment protocol and sequence is outlined in a clinical case presentation involving a Type 2B socket.

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