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Background: Success of any bone augmentation procedure is dependent on several factors. Because complications occur in some cases, the aims of this study are to analyze adverse events associated with placement of fresh-frozen bone allografts (FFBAs) during alveolar ridge augmentation and to assess 1-year survival of dental implants placed in reconstructed sites., Methods: Fifty-eight consecutive patients (15 males and 43 females, aged 38 to 76 years; mean age: 58 ± 9.2 years) requiring maxillary bone reconstruction prior to implant placement were enrolled in this study. A total of 268 implants was subsequently placed in sites reconstructed with FFBAs. There were 22 posterior grafted sites, 19 anterior, and 17 full-arch sites. After a 4- to 6-month integration period, all patients received an implant-supported fixed prostheses. Complications occurring during treatment and the 12-month follow-up period were recorded and evaluated., Results: Thirteen of 58 (22.41%) patients experienced some kind of complication in the receptor site. Infection occurred in six (10.34%) individuals, dehiscence in five (8.62%), and mucosal perforation in seven (12.07%). Adverse outcomes categorized as partial and total graft loss occurred in four (6.90%) and three (5.17%) patients, respectively. Implant failure rate was 16 (5.97%) of the 268 fixtures placed in 12 (20.70%) of 58 patients., Conclusions: Infection and suture dehiscence are significantly correlated with graft loss in a maxillary FFBA augmentation. Patients with full-arch grafting reconstructions lost significantly more implants. Early diagnosis and prompt management of adverse events seem to be of great importance in prevention of total graft loss.

Background: Sarcoidosis is an inflammatory granulomatous systemic disease that rarely affects the oral cavity. Gingival involvement has been reported in only a very limited number of cases, occasionally as the first manifestation of the disease. This article reports a case of sarcoidosis affecting the gingiva and alveolar mucosa in a patient previously treated for the systemic disease and considered under long-term clinical control., Methods: A 57-year-old white female presented with a chief complaint of gingival pain in the maxillary right area lasting 3 years. Clinical examination revealed an erythematous, ill-defined erosive macule on the buccal aspect of the maxillary right gingiva extending from the canine to the third molar. The medical history included a diagnosis of sarcoidosis 16 years prior to presentation, which was considered to be under clinical control for the last 11 years. An incisional biopsy was obtained., Results: Histopathology indicated the presence of an intense chronic inflammatory infiltrate and focal areas with non-caseating granulomas. Periodic acid-Schiff and Grocott's stains were negative for microorganisms, and the diagnosis was compatible with sarcoidosis. Systemic evaluation showed no involvement of other areas and organs, and the patient was managed with topical steroid therapy using silicone trays in conjunction with conventional periodontal therapy and oral hygiene instructions. Complete response was achieved after 6 months, and the patient remains in clinical follow-up., Conclusion: Although sarcoidosis is a systemic disease that rarely affects the gingiva, the possibility of gingival involvement as the sole manifestation of the disease should be considered in the differential diagnosis of gingival lesions.