Ameloblastic fibroma: a rare case appearing as a mixed radiographic image

Ameloblastic fibroma (AF) is a benign tumor of mixed odontogenic origin, which affects predominantly young individuals. AF appearing as a mixed radiographic image is very rare. This report describes a case of AF in a 12- year-old male identified during a routine radiographic exam for orthodontic treatment planning. The panoramic radiography revealed a well-defined multilocular mixed image located in the mandible between the roots of the left mandibular second premolar and first molar. The lesion was excised under local anesthesia. Histopathological analysis revealed islands of epithelial cells and columnar peripheral cells showing a nucleus in inverted polarization, interspersed with spindle-shaped cells and abundant extracellular matrix deposition. No atypia was observed. The diagnosis of AF was established. No tumor recurred up to 30 months after treatment. Although rare, AF should be also considered in the differential diagnosis of mixed radiographic images of the jaws in young patients

Mandibular destructive radiolucent lesion: the first sign of multiple myeloma

The occurrence of a mandibular lesion as the first sign of multiple myeloma (MM) is uncommon. This report describes a case of MM diagnosed because of a mandibular lesion. A 62-year-old woman presented a destructive radiolucent lesion in the right mandibular ramus. The lesion caused rupture of the anterior cortical bone and extended from the retromolar area to the coronoid process. An incisional biopsy was performed. Histopathological examination revealed numerous pleomorphic plasma cells, some with binucleated nuclei. The tumor cells showed kappa lightchain restriction. Bone marrow biopsy showed findings of massive infiltration of neoplastic plasma cells, besides lesions in the vertebrae. The diagnosis of MM was established. The patient underwent autologous hematopoietic stem-cell transplantation. Currently, the patient is under regular follow up after 40 months of initial treatment. In conclusion, MM should be considered in the differential diagnosis of destructive mandibular lesions

The relationship between temporomandibular dysfunction and head and cervical posture

OBJECTIVE: This study aimed to evaluate the possibility of any correlation between disc displacement and parameters used for evaluation of skull positioning in relation to the cervical spine: craniocervical angle, suboccipital space between C0-C1, cervical curvature and position of the hyoid bone in individuals with and without symptoms of temporomandibular dysfunction. MATERIAL AND METHODS: The patients were evaluated following the guidelines set forth by RDC/TMD. Evaluation was performed by magnetic resonance imaging for establishment of disc positioning in the temporomandibular joints (TMJs) of 30 volunteer patients without temporomandibular dysfunction symptoms and 30 patients with symptoms. Evaluation of skull positioning in relation to the cervical spine was performed on lateral cephalograms achieved with the individual in natural head position. Data were submitted to statistical analysis by Fisher's exact test at 5% significance level. To measure the degree of reproducibility/agreements between surveys, the kappa (K) statistics was used. RESULTS: Significant differences were observed between C0-C1 measurement for both symptomatic (p=0.04) and asymptomatic (p=0.02). No statistical differences were observed regarding craniocervical angle, C1-C2 and hyoid bone position in relation to the TMJs with and without disc displacement. Although statistically significant difference was found in the C0-C1 space, no association between these and internal temporomandibular joint disorder can be considered. CONCLUSIONS: Based on the results observed in this study, no direct relationship could be determined between the presence of disc displacement and the variables assessed

A review of oral biopsies in children and adolescents: a clinicopathological study of a case series

Objective: The aim of this study was to evaluate the clinicopathological features of oral lesions in children and adolescents diagnosed in an Oral Pathology Laboratory. Study design: Between 2000 and 2010, all oral lesions diagnosed in patients younger than 18 years old, from the Oral Pathology Laboratory, Federal University of Pernambuco, Brazil, were selected for the study. The clinical data were obtained from the patient charts filed in the Laboratory. All cases were microscopically reviewed and the diagnosis classified into 10 categories. Results: From the 2395 lesions, 315 (13.1%) occurred in this age group. The lesions were more common in the female gender (59%) during the second decade of life (69%). The inflammatory/reactive lesions were the most common (64.4%), followed by the epithelial and soft tissue neoplasms (8.6%). The mucocele (33.3%) was the most common lesion, with the lip mucosa representing the most affected site (48%). In 61.5% there was concordance between clinical hypothesis of diagnosis and histopathological diagnosis. Conclusions: Inflammatory/reactive lesions were the most common biopsied lesions and the lip the most frequent site. Similar studies are important, reinforced by the low correlation between clinical diagnosis and histopathological diagnosis

Quality of information about oral cancer in Brazilian Portuguese available on Google, Youtube, and Instagram

To evaluate the quality of oral cancer information in Brazilian Portuguese on Google, YouTube, and Instagram. The first 100 links of each platform characterized the initial sample. The websites and Instagram were evaluated using the JAMA benchmarks, the Discern instrument, and the Flesch readability index (Flesch Reading Ease). The existence of Health on the Net (HON) code was also registered on websites. The usefulness of each video on YouTube was classified as not useful, slightly useful, moderately useful, or very useful. Thirty-four websites, 39 Instagram posts, and 57 videos were evaluated, of which 18 (33.3%) websites and 19 (48.7%) Instagram posts covered only 2 of the 4 JAMA benchmarks. For the Discern instrument, 20 (37%) and 18 (33.3%) websites exhibited low and moderate reliability, respectively, while 26 (66.7%) Instagram posts were of low confidence. The level of intelligibility of both websites and Instagram was difficult. Only three websites exhibited the HONcode. Forty-one (71.9%) videos on YouTube were moderately useful. Information on oral cancer on the Internet in Brazilian Portuguese is of low quality. Thus, educational and governmental institutions have a responsibility to produce and indicate reliable sources of information for the population

Self-regulated learning perception of undergraduate dental students during the COVID-19 pandemic : a nationwide survey in Brazil

This study aimed to evaluate the perception of self-regulated learning of Brazilian undergraduate dental students during the COVID-19 pandemic. Material and Methods: A nationwide cross-sectional survey was conducted. Data were collected in

Effects of Zoledronic Acid in Experimental Periapical Lesions in Rats: An Imaging and Histological Analysis

Joannis J. de. Note sur une nouvelle espèce de Microlépidoptère d'Algérie, Tineola infuscatella . In: Bulletin de la Société entomologique de France, volume 2 (5),1897. pp. 109-111

Knowledge and Attitudes of Primary Health Care Dentists Regarding Oral Cancer in Brazil

Cilj: Željeli su se procijeniti znanje i stajališta o oralnome raku brazilskih doktora dentalne medicine u jedinicama primarne zdravstvene zaštite. Materijali i metode: Provedeno je prospektivno, presječno, epidemiološko istraživanje. Sa 71 doktorom dentalne medicine iz primarne zdravstvene zaštite kontaktiralo se na njihovu radnom mjestu i svi su se složili sa sudjelovanjem u istraživanju. Podatci su prikupljeni na temelju upitnika s 31 pitanjem s višestrukim izborom o glavnim kliničkim značajkama i rizičnim čimbenicima za karcinom usne šupljine. Upitnik je bio podijeljen u dva dijela – na pitanja koja se odnose na opće podatke i samopoimanje sudionika o osobnom znanju o oralnom karcinomu te na objektivna pitanja povezana s općim informacijama o oralnom karcinomu (klinička obilježja, karakteristike, svojstva i rizični čimbenici). Podatci su upisani u tablice i analizirani deskriptivnom statistikom. Rezultati: Sudionici su bile uglavnom žene (81,5 %) mlađe od 40 godina (57,7 %) koje su završile školovanje prije 10 do 20 godina (47,9 %). Većina (66,2 %) smatra da je razina njihova znanja o oralnom karcinomu zadovoljavajuća. No samo 26,8 % istaknulo je da može obaviti dijagnostičke postupke u slučaju raka usne šupljine. Većina (95,8 %) je bila zainteresirana za sudjelovanje na tečajevima osposobljavanja za postavljanje oralne dijagnoze, a 56,3 % izjavilo je da nisu bili ni na kakvoj edukaciji ili nisu dobili smjernice o tome kako obaviti pregled za otkrivanje raka usne šupljine tijekom dodiplomskog školovanja. Zaključak: Ovi nalazi u skladu su s dosadašnjim izvješćima i upućuju na to da su potrebne nove javnozdravstvene smjernice kako bi se omogućila rana dijagnoza raka usne šupljine i obavila revizija kurikula o oralnoj medicini u školama dentalne medicine.Objective: The aim of this study was to evaluate the knowledge and attitudes of dentists working in Primary Health Care Units from a Brazilian city, regarding oral cancer. Materials and methods: A prospective, cross-sectional, epidemiologic survey was performed. Seventy-one dentists from Primary Health Care Units were contacted at their workplace, and participated of the study. Data were collected through a self-administered questionnaire of 31 multiple-choice questions addressing the main clinical features and risk factors for oral cancer. The questionnaire was divided into two sections: questions related to general data and self-perception of the participants regarding personal knowledge of oral cancer, and objective questions related to general information on oral cancer (clinical features, characteristics, traits, and risk factors). The data were tabulated and analyzed by descriptive statistics. Results: Participants were mostly females (81.5%), less than 40 years of age (57.7%), who underwent training 10–20 years ago (47.9 %). Most respondents (66.2%) considered their level of knowledge about oral cancer to be satisfactory. However, only 26.8% of tem felt that they were able to carry out diagnostic procedures for oral cancer. Most of them (95.8%) were interested in participating in training courses on Oral Diagnostics; 56.3% of them reported not having received any training or guidance on how to conduct an examination to detect oral cancer during undergraduate training. Conclusions: These findings are consistent with previous reports and point to the need for new public policies to enable early diagnosis of oral cancer and a review of training in Oral Diagnostics in dental schools