Odontogenic myxoma is an aggressive benign odontogenic tumor, accounting for 3-6% of all the odontogenic tumors in adults. The incidence among children is lower. Due to its clinical behavior, there is no consensus on the best treatment. In this paper, the authors report the case of a 9-year-old girl with the diagnosis of odontogenic myxoma. The panoramic X-ray showed an extensive radiolucent lesion involving the left mandibular body causing teeth displacement. The treatment consisted of tumor enucleation followed by vigorous curettage of the bone walls. Both the base of the mandible and the inferior alveolar nerve were preserved. The patient is asymptomatic after 6 months of surgery. The age of the patient and the radiographic features were taken into account when deciding in favor of the conservative treatment.

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Surgical dental treatment for cancer patients requires more alertness in propaedeutics when in comparison to normoreactive subjects. Therapy must always be appropriate to the individual's clinical and systemic condition. Under those circumstances, we report a female patient, 51 years old, leucoderma, with a previous history of breast carcinoma. She underwent surgical excision, radiotherapy, and reconstruction of the right breast. The patient described experiencing pain around the 14 tooth area. Clinical and radiographical observations revealed the presence of a protuberance in the vestibule-distal region and in the alveolar ridge of the tooth. The protuberance is related to the local anatomy and previous exodontia, which occurred due to extensive coronary loss, deflection of the remaining cusps, presence of gingival hyperplasia covering the crown, endodontic treatment with the absence of gutta-percha in the region of the pulp chamber, and ankylosis. In her medication history, there was no use of anti-resorptive drugs, which would represent a surgical contraindication. The surgical planning for the region of the 14 tooth included flap making and vestibular and bone spike osteoplasty, with beveling of the osteotomy margins. An antibiotic was prescribed for 7 days and the patient should start taking it 2 days before the surgery. The subject had good post-surgical tissue repair and probable posterior prosthetic rehabilitation. Therefore, it is fair to conclude that careful anamnesis sets up an adequate surgical propaedeutics with a good prognosis, which may improve the quality of life of cancer patients.

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Gushiken, pelos bons momentos de convívio e aprendizado, e em especial ao Wellington Yanaguizawa, pelas imensas contribuições, suporte e disponibilidade para a realização deste trabalho.Ao departamento e aos professores da disciplina de Estomatologia, Prof. Dr. Norberto NobuoSugaya pela amizade e orientação, Prof. Dr. Celso Augusto Lemos Júnior e Profa. Dra. Andrea Lusvarghi Witzel, pelo acolhimento e ensinamentos, e ao Prof. Dr. Fábio de Abreu Alves, pela amizade e suporte para este estudo, abrindo as portas do A.C. Camargo Cancer Center para contribuir com meu conhecimento e crescimento profissional. Estendo meus sinceros agradecimentos ao Prof. Dr. Cláudio Mendes Pannuti da disciplina de Periodontia, Prof. Dr. Claudio Costa e Prof. Dr. Marcelo Cavalcanti da disciplina de Radiologia, que disponibilizou o Laboratório de Imagem em 3D (LABI-3D) para as análises deste trabalho, e a Profa. Dra. Martha Simões Ribeiro, do Instituto de Pesquisas Energéticas e Nucleares (IPEN-USP), pelas contribuições científicas, além do suporte das secretárias do departamento Iracema Mascarenhas, Maria Aparecida Pinto e ao técnico Laerte Zanon.A meus pais que se dedicaram a me sustentar, apoiar meus caminhos e celebrar minhas vitórias, priorizando minha educação e fazendo dela sua principal ambição.A meu irmão, Lucas Vicente de Oliveira, por existir e ser o único e melhor companheiro que meus pais poderiam me dar. Aos inestimáveis amigos Amália Cataruci, Gabriel Mariano, Gabriela Schwab, Karina Haibara e Roberta Bueno, pela parceria sempre presente e sincera. Sou grata, ainda, pela pessoa que apostou cegamente no meu potencial e me faz acreditar que sou capaz de conquistar minhas próprias vitórias. À minha amiga, Marcia Bueno Freire Arold, pelos braços abertos e fé.

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Tongue squamous cell carcinoma is one of the most prevalent and aggressive head and neck carcinomas. When diagnosed in an advanced stage is associated with a reduced overall survival rate due to the increased risk of locoregional recurrence and distant metastases. This article discusses the dental care strategies that were adopted regarding the progression to an incurable state of a 52-year-old man diagnosed with advanced tongue squamous cell carcinoma, which was initially treated with exclusive radiotherapy.In a 5-year-period, this patient developed severe lesions of osteoradionecrosis and also local tumor recurrence without the possibility of curative treatment. Palliative care in the dental context must be adopted in order to provide physical and emotional health still at the final moments in the patient's life.