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Paroxysmal nocturnal hemoglobinuria (PNH) is a hematological disorder that affects hematopoietic stem cells. An association with other hematological diseases, such as hemolytic anemia and neutropenia, is observed with a high occurrence of aplastic anemia. The aim of the present study is to report a case of dental infection in a patient with PNH exhibiting exuberant gingival involvement. A 45‐year‐old male patient sought the Federal University of Ceara reporting severe toothache associated with tooth 24. Clinical examination revealed that the tooth was associated with an apparent fistula and a yellowish lesion with smooth surface located in the palate. The patient had interrupted the medication to control PNH. Blood transfusion was requested due to deficient hematological parameters. Tooth extraction and excisional biopsy were performed under antibiotic coverage. In the postoperative period, low‐level laser therapy (LLLT) was performed. Histopathological examination revealed connective tissue showing extensive necrotic areas, accumulation of basophilic material, numerous cyst‐like cavities, and degenerated cells. Histopathological findings were compatible with the initial clinical diagnosis of gingival necrosis. The patient evolved with febrile neutropenia, requiring hospitalization for 1 month. Improvement in the overall health was observed after the administration of antibiotics, eculizumab, and weekly LLLT at the biopsy site.

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Background Malignant neoplasms that affect children and adolescents are predominantly embryonic and generally affect blood system cells and supporting tissues. Aim This study aimed to summarize the scientific evidence about the prevalence of malignant lesions in the oral cavity of children and adolescents. Design In this systematic review and meta‐analysis (PROSPERO CRD42020158338), data were obtained from seven databases and the gray literature. Cross‐sectional observational studies on the prevalence of biopsied oral pediatric malignancies were included. The Newcastle‐Ottawa Scale assessed the quality of the included studies, and the GRADE approach evaluated the evidence certainty. The meta‐analysis prevalence was calculated using MedCalc® software, adopting a 95% confidence level (CI; random‐effect model). Results Forty‐two studies were included in the meta‐analysis. Of the 64,522 biopsies, the prevalence of malignant lesions was 1.93% (n = 1,100; 95% CI = 1.21%‐2.80%). Countries with a low socioeconomic profile showed the highest prevalence. The sample size did not influence the prevalence of oral malignancies, and unspecified lymphomas (12.08%; 95% CI = 5.73%‐20.37%) and rhabdomyosarcoma (10.53%; 95% CI = 7.28%‐14.30%) were the most common lesions. Conclusions Oral malignant lesions biopsied in children and adolescents had a prevalence of <3%, and lymphomas and sarcomas were the most prevalent lesions.

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Salivary gland tumors account for only 3%–5% of all tumors in the head and neck, 10%–15% of which originate from minor salivary glands. Pleomorphic adenoma is a benign lesion of the salivary gland, most commonly occurring in the region of the hard and soft palates. The treatment of choice for pleomorphic adenomas is with the partial or total function of the extension of the lesion, and placing palatal obturators are one method of reestablishing masticatory function and facial esthetics. This study aimed to rehabilitate a patient using a palatal implant following partial maxillectomy for the removal of a pleomorphic adenoma. A young patient with pleomorphic adenoma of the hard palate underwent a partial right-sided maxillectomy procedure which removed the hard palate and alveolar regions of the molars. Prior to surgery, the patient was assessed to make a surgical guide for resection of the tumor, as well as a provisional obturator plate using orthodontic wire clasps. After healing, the patient was rehabilitated using a palatal obturator which had been incorporated into a removable partial denture. The clinical sequence used to fabricate the final prosthesis was as follows: initial molding after surgery, prosthesis design, preparation of the mouth, work molding, structure testing and orientation planning, teeth testing and installation, and periodic maintenance. Thus, we can conclude that the palatal obturator is an excellent means of restoring a patient’s oral function, facial esthetics, and overall quality of life.

Bone marrow transplantation (BMT) has been used to treat numerous malignant and non-malignant hematological diseases, genetic and immunological diseases with a high risk of oral mucositis (OM) due to the action of antineoplastic drugs. As photobiomodulation therapy (FBMT) with low-level laser is a proven non-invasive treatment for OM, the objective of this study was to evaluate the incidence of OM in patients on BMT undergoing FBM. 53 patients undergoing treatment received FBMT (red laser, 2J, 20s, 100mW) as a preventive protocol. If MO was observed, an infrared laser (4J, 40s, 100W) was administered. The following data were collected from patients' medical records: sex, age, chemotherapy protocol (QT) and type of BMT. An incidence of 34% was observed in the population studied (20% grade I, 11.3% grade II and 1.9% grade III). Prevention protocols using FBMT significantly reduced the incidence of oral mucositis (p = 0.004). Now, young patients with myeloid leukemia, the time between QT and BMT (p = 0.010) and time of QT (p = 0.018) were directly associated with the increased incidence of oral mucositis. It was concluded that low-intensity preventive laser therapy was associated with a reduction in the incidence of oral mucositis, showing the importance of this therapy in the management of patients undergoing BMT.