Peri-Implant Cystic Lesion With Unusual Cellular Changes: A Case Report.

Introduction: This report describes the history and management of a cyst developing in anatomic contact with an immediately placed dental implant.

Case Presentation: The lesion presented clinically as a facial swelling of the gingiva adjacent to an osseointegrated and restored maxillary right lateral incisor implant. Radiographs showed a well-circumscribed radiolucency, which was contiguous with the implant surface.

Stability of treated angular and horizontal bony defects: a retrospective radiographic evaluation in a private periodontal practice.

Background: This retrospective radiographic evaluation provided a comparative assessment of long-term alterations of alveolar bone levels at sites with angular and horizontal bony defects that underwent open-flap debridement and did not undergo resective or regenerative periodontal therapy.

Methods: The investigation included 50 patients (27 met inclusion criteria) who had periodontal surgery and periodontal maintenance every 3 to 6 months and who presented with sites demonstrating radiographic angular defects and sites on adjacent or contralateral teeth that demonstrated horizontal bone loss. Subsequent to surgical therapy, alterations in bone levels at the alveolar crest of horizontal defects and at the base of angular defects were evaluated by comparing radiographs from the initial examination to those obtained after a period of periodontal maintenance (6 to 16 years; mean: 8.