Abstract This study employed e-Vol DXS cone beam computed tomography (CBCT) software to assess dentin remnants in the furcation area of mesial canals in mandibular molars during root canal retreatment (RCR). Four groups (Reciproc®, ProTaper Next®, Race Evo®, Protaper Gold®) were subjected to RCR, and CBCT images were captured before (T1) and after (T2) treatment. Measurements of remaining dentin thickness at 1 mm and 3 mm below the furcation were scrutinized. Results revealed no significant differences in mean thicknesses of mesiobuccal (MB) and mesiolingual (ML) canals at 1 mm and 3 mm from the furcation pre-treatment (T1). Post-treatment (T2) showed analogous findings, with no significant differences in mean thicknesses. However, disparities were found between MB and ML canals at both distances, both before and after retreatment. In essence, the evaluated instruments exhibited safety in RCR, implying that they are appropriate for use in critical areas of mandibular molars without inducing excessive wear. This study underscores the reliability of these instruments in navigating danger zones during RCR, and contributes valuable insights for dental practitioners who handle complex root canal scenarios in mandibular molars. eVol e Vol (CBCT RCR. RCR . (RCR) Reciproc®, Reciproc (Reciproc® Next Next® Evo Evo® Gold® Gold T1 T (T1 T2 (T2 treatment scrutinized (MB (ML pretreatment pre T1. Posttreatment Post findings However distances essence wear (RCR Reciproc® (Reciproc (T

Resumo Introdução A detecção precoce e o pronto tratamento têm importante papel na redução da morbidade e mortalidade por câncer. No Brasil, a Lei nº 12.732/2012 define o prazo máximo de 60 dias para o início do tratamento após o diagnóstico. Objetivo Identificar fatores com o potencial de contribuir para o atraso do início do tratamento dos pacientes diagnosticados com câncer de boca em um Centro de Assistência de Alta Complexidade em Oncologia (CACON) na Região Centro-Oeste do Brasil. Material e método Neste estudo observacional retrospectivo, analisaram-se os prontuários de 122 pacientes atendidos de 2010 a 2016 cujos tratamentos sofreram um atraso superior a 60 dias após a confirmação do diagnóstico. Os dados de cada prontuário foram identificados e transcritos em uma planilha. Resultado Seis fatores que podem ter contribuído para o atraso no tratamento foram identificados e classificados em três dimensões: paciente, profissional de saúde e serviços de saúde. O fator mais frequente foi relacionado aos serviços de saúde, e envolveu falhas na disponibilidade de serviços (90,2%), especialmente quanto ao tempo de espera para a realização de diversos exames. Na dimensão profissional de saúde, destacaram-se as dúvidas acerca do diagnóstico e tratamento (65,6%). Os fatores menos frequentes foram relacionados à dimensão paciente, e envolveram aspectos comportamentais (23,8%) e socioeconômicos (15,6%). Conclusão Observou-se uma alta frequência de fatores com o potencial de contribuir para o atraso do início do tratamento do câncer de boca, destacando-se os relacionados aos serviços de saúde, em especial ao tempo de espera para a realização de exames. Brasil 127322012 12 732 2012 12.732/201 6 CACON (CACON CentroOeste Oeste retrospectivo analisaramse analisaram se 201 planilha dimensões paciente 90,2%, 902 90,2% , 90 2 (90,2%) exames destacaramse destacaram 65,6%. 656 65,6% . 65 (65,6%) 23,8% 238 23 8 (23,8% 15,6%. 156 15,6% 15 (15,6%) Observouse Observou destacandose destacando 12732201 1 73 12.732/20 20 90,2 9 (90,2% 65,6 (65,6% 23,8 (23,8 15,6 (15,6% 1273220 7 12.732/2 90, (90,2 65, (65,6 23, (23, 15, (15,6 127322 12.732/ (90, (65, (23 (15, 12732 12.732 (90 (65 (2 (15 1273 12.73 (9 (6 ( (1 127 12.7 12.

Abstract Introduction Early detection and prompt treatment play an important role in reducing morbidity and mortality from cancer. In Brazil, Law No. 12,732/2012 defines a maximum period of 60 days for starting treatment after diagnosis. Objective To identify factors that may contribute to delays in initiating treatment for patients diagnosed with oral cancer at a High Complexity Oncology Care Center (CACON) in the Central-West region of Brazil. Material and method This retrospective observational study analyzed the medical records of 122 patients whose treatments, conducted between 2010 and 2016, were delayed by more than 60 days following confirmation of their diagnosis. Data from each medical record was collected and transcribed into a spreadsheet for analysis. Result Six factors potentially contributing to treatment delays were identified and classified into three dimensions: patient-related, health professional-related, and health services-related. The most prevalent factor was related to health services, specifically failures in service availability (90.2%), particularly regarding waiting times for various tests. Within the professional health dimension, concerns related to diagnosis and treatment were the most prevalent factors (65.6%). The least frequent factors were linked to the patient-related dimension, encompassing behavioral (23.8%) and socioeconomic (15.6%) aspects. Conclusion A high frequency of factors potentially contributing to delays in initiating treatment for oral cancer was observed, with those related to health services being the most prevalent, especially the waiting times for various tests. Brazil No 127322012 12 732 2012 12,732/201 6 CACON (CACON CentralWest Central West treatments 201 2016 analysis dimensions patientrelated, patientrelated patient related, professionalrelated, professionalrelated professional-related servicesrelated. servicesrelated related. services-related 90.2%, 902 90.2% , 90 2 (90.2%) tests dimension 65.6%. 656 65.6% . 65 (65.6%) 23.8% 238 23 8 (23.8% 15.6% 156 15 (15.6% aspects observed 12732201 1 73 12,732/20 20 90.2 9 (90.2% 65.6 (65.6% 23.8 (23.8 15.6 (15.6 1273220 7 12,732/2 90. (90.2 65. (65.6 23. (23. 15. (15. 127322 12,732/ (90. (65. (23 (15 12732 12,732 (90 (65 (2 (1 1273 12,73 (9 (6 ( 127 12,7 12,

Abstract The aim of this study was to investigate the epidemiological and clinical characteristics of chronic inflammatory periapical diseases in different regions of Brazil and to compare with data from the literature. A multicenter study was carried out in four Brazilian referral centers in oral diagnosis. Histopathological records were reviewed, and all cases diagnosed microscopically as periapical granuloma, radicular cyst, and periapical abscess were included. Demographic and clinical data were collected. Descriptive statistics and Pearson’s chi-square test were performed. A total of 10,381 cases of chronic inflammatory periapical diseases were found (13.8% of 74,931 archived specimens) over a period of 65 years. Radicular cysts were the most common lesion (59.9%). Women (56.1%) with a mean age of 37.01 years old (range 13 to 100 ± 14.42) and people of white skin color (59.2%) were the most affected individuals by chronic inflammatory periapical diseases. The lesions were generally asymptomatic (28.1%), located in the maxilla (60.1%), and posterior region (49.8%). The radicular cysts were larger when compared to periapical granulomas (p < 0.001). The disagreement between the clinical and histopathological diagnoses was higher when the final diagnosis was a periapical granuloma (p < 0.001). Chronic inflammatory periapical diseases continue to be common lesions affecting mainly adults. This should be a consequence of the burden of untreated caries in permanent teeth. Women are more affected and radicular cyst was the most common lesion.