The Importance of Cone-Beam Computed Tomography in Endodontic Treatment of a Mandibular Premolar With Atypical Anatomy: A Case Report.

The objective of this case study is to report the endodontic treatment of a mandibular premolar with a C-shaped root canal configuration based on the use of cone-beam computed tomography (CBCT) as a diagnostic aid and in treatment planning. A 14-year-old patient was referred for endodontic treatment of tooth No. 21. Upon examination of the CBCT, C-shaped canal anatomy was verified. The chemical-mechanical preparation was carried out with a rotary file system (rotary files 25.08, 30.05, and 35.05) and the use of 2.5% sodium hypochlorite as an auxiliary chemical substance. Clinical and radiographic follow-up was performed 6 months and 1 year after endodontic treatment. A periapical radiolucency revealed a progressive reduction, suggesting the evolution of tissue repair. This case study confirms that to achieve a favorable prognosis of endodontic treatment, in-depth knowledge of the internal anatomy of the root canal system, along with its variations, is necessary. In this regard, CBCT is an important tool to assist in obtaining the correct diagnosis and understanding the anatomical complexity to be treated. Variations of C-shaped canals are challenging due to difficulties encountered during the stages of chemical-mechanical preparation and filling. Thus, means of enhancing disinfection are needed.

Prevalência da queilite actínica em agricultores de uma região do sertão brasileiro / Prevalencia de queilitis actínica en agricultores de una región del interior brasileño / Prevalence of actinic cheilitis in Brazilian semi-arid region farmers

Introdução: A queilite actínica é uma lesão inflamatória com potencial de transformação maligna e desenvolvimento associado à exposição solar excessiva. Objetivo: Avaliar a prevalência de queilite actínica em um grupo de agricultores, bem como a percepção e conhecimento desse grupo sobre a lesão. Métodos: O estudo observacional de levantamento epidemiológico envolveu uma população de agricultores de uma região do sertão brasileiro. A amostra foi obtida por acessibilidade a essa população, e alcançou-se o total de 219 agricultores. Além do exame físico intraoral, utilizou-se um questionário estruturado para coleta dos dados. Resultados: A queilite actínica foi diagnosticada em 30,6 porcento dos agricultores examinados. A lesão foi encontrada com maior frequência no sexo masculino (86,6 porcento), com mais de 60 anos (64,2 porcento) e leucodermas (58,2 porcento). A maioria dos indivíduos com queilite actínica se expunham à radiação solar por mais de 30 anos (65,7 porcento), por mais de 6h por dia (73,1 porcento) e não se protegiam adequadamente (94 porcento). Sexo, idade, escolaridade, hábito de beber e tempo de exposição solar tiveram uma correlação estatisticamente significante com a presença da queilite actínica (p<0,05). Verificou-se que 76,1 porcento dos participantes não notavam sinais e 61,2 porcento não percebiam sintomas da lesão. O conhecimento sobre queilite actínica foi baixo para 97 porcento dos indivíduos com lesão. Conclusões: Os resultados demonstraram alta prevalência de queilite actínica, além de uma baixa percepção e conhecimento sobre esta lesão, o que indica a necessidade de realização de ações de educação em saúde(AU)

Introducción: La queilitis actínica es una lesión inflamatoria con potencial de transformación maligna y desarrollo asociado con la exposición excesiva al sol. Objetivo: Evaluar la prevalencia de queilitis actínica en un grupo de agricultores brasileños y la percepción y conocimiento que estos tienen sobre la lesión. Métodos: Estudio observacional epidemiológico. Incluyó una población de agricultores de una región rural brasileña. La muestra, constituida por 219 agricultores, se obtuvo por accesibilidad a esta población. Además del examen físico intraoral, se utilizó un cuestionario estructurado para recopilar los datos. Resultados: Se diagnosticó queilitis actínica en el 30,6 por ciento de los agricultores examinados. La lesión se encontró con mayor frecuencia en hombres (86,6 por ciento), mayores de 60 años (64,2 por ciento) y leucodermos (58,2 por ciento). La mayoría de las personas con queilitis actínica estuvieron expuestas a la radiación solar durante más de 30 años (65,7 por ciento), más de seis horas al día (73,1 por ciento) que no se protegieron adecuadamente (94 por ciento). El género, la edad, el nivel de educación, los hábitos de bebida y el tiempo de exposición al sol tuvieron una correlación estadísticamente significativa con la presencia de queilitis actínica (p < 0,05). Se encontró que el 76,1 por ciento de los participantes no notó signos y el 61,2 por ciento no percibió síntomas de la lesión. El conocimiento sobre la queilitis actínica fue bajo para el 97 por ciento de las personas con lesiones. Conclusión: Los resultados mostraron una alta prevalencia de queilitis actínica, además de una baja percepción y conocimiento al respecto de esta lesión, lo que indica la necesidad de acciones de educación para la salud(AU)

Introduction: Actinic cheilitis is an inflammatory, potentially malignant lesion associated with excessive sun exposure. Objective: To evaluate the prevalence of actinic cheilitis in a group of farmers, as well as the perception and knowledge of that group about this lesion. Methods: The observational epidemiological study included Brazilian semi-arid region farmers. The sample was obtained for accessibility to this population and a total of 219 farmers was reached. A structured questionnaire was used to collect the data in addition to the intraoral physical examination. Results: Actinic cheilitis was diagnosed in 30.6 percent of the examined farmers. The lesion was found more frequently in males (86.6 percent), older than 60 years (64.2 percent), and leukoderma (58.2 percent). Most individuals with actinic cheilitis were exposed to solar radiation for more than 30 years (65.7 percent), for more than 6 hours a day (73.1 percent), and did not adequately protect themselves (94 percent). Sex, age, education level, drinking habits, and time of sun exposure had a statistically significant correlation with the presence of actinic cheilitis (p < 0.05). It was found that 76.1 percent of the participants did not notice signs and 61.2 percent did not perceive symptoms of this injury. Knowledge about actinic cheilitis was low for 97 percent of individuals with the lesion. Conclusions: The results showed a high prevalence of actinic cheilitis, in addition to low perception and knowledge about it, which indicates the need for health education actions(AU)

The Use of Cone-Beam Computed Tomography in the Endodontic Treatment of a Maxillary Central Incisor With Two Roots: Case Report.

Atypical anatomy in the maxillary incisor is extremely rare, with only a few case reports describing these variations. Cone-beam computed tomography (CBCT) is an effective way to accurately diagnose anatomical disparities and determine the 3-dimensional location of roots and canals. The aim of this article is to report on the diagnosis and endodontic treatment of a rare case of a double-rooted maxillary central incisor, supported by CBCT scanning as a diagnostic imaging technique. Clinical examination of a 72-year-old patient who was referred for endodontic treatment of tooth No. 9 revealed a coronary fracture and no response to thermal sensitivity tests. Based on the periapical radiographs, the presence of anatomical variations was suspected. This prompted a CBCT scan for the acquisition of a more accurate diagnosis, and two roots were detected. This article details the successful endodontic treatment performed. The results demonstrate that in a case of abnormal anatomy in a maxillary incisor an effective diagnosis along with adequate treatment may allow for a favorable prognosis in the long term.