Objective: To analyze the prevalence and severity of Molar Incisor Hypomineralization (MIH) and its relationship with dental caries in public school children in Manaus/AM. Material and Methods: Overall, 2,062 primary school children aged 6-10 years were examined to obtain MIH, DMFT, dmft and DDE indexes. The participation of five schools in each district of the city of Manaus was randomly determined, totaling 40 schools, and in each of them, two classes of each grade of elementary school in two shifts were selected, totaling 10 classes. Clinical examinations were conducted by two previously calibrated examiners in school environment under natural lighting. Data collected were submitted to descriptive statistical analysis by Chi-square, Fisher's Exact and Mann-Whitney tests at 5% significance level. Results: The prevalence of MIH in Manaus was 9.12% and no significant association with gender and age of schoolchildren was found. The mandibular arch was the most affected, with greater number of teeth being affected on the left side. The most frequently affected teeth were the mandibular permanent first molars, followed by maxillary counterparts and maxillary/mandibular central incisors. The most frequent diagnosis was mild MIH. The DMFT of children with MIH was 1.58 and dmft was 2.47, higher than those of the unaffected group. A correlation was found between DDE and MIH. Conclusion: Early diagnosis of MIH is imperative, since children affected show high risk for the development of dental caries.

BackgroundTutored laboratorial activities could be a manner of improving the competency development of students. However, its impact over conventional theoretical classes has not yet been tested. Additionally, different university contexts could influence this issue and should be explored.ObjectiveTo assess the impact of a tutored theoretical-practical training for teaching undergraduate students to detect caries lesions as compared with theoretical teaching activities. The impact of these teaching/learning activities will be assessed in terms of efficacy, cost/benefit, retention of knowledge/acquired competences, and student acceptability.MethodsSixteen centers (7 centers from Brazil and 9 centers from other countries throughout the world) are involved in the inclusion of subjects for this protocol. A randomized controlled study with parallel groups will be conducted. One group (control) will be exposed to a 60- to 90-minute conventional theoretical class and the other group (test) will be exposed to the same theoretical class and also a 90-minute laboratory class, including exercises and discussions based on the evaluation of a pool of images and extracted teeth. The mentioned outcomes will be evaluated immediately after the teaching activities and also in medium- and long-term analyses. To compare the long-term outcomes, students who enrolled in the university before the participating students will be interviewed for data collection and these data will be used as a control and compared with the trained group. This stage will be a nonrandomized phase of this study, nested in the main study. Appropriate statistical analysis will be performed according to the aims of this study. Variables related to the centers will also be analyzed and used to model adjustment as possible sources of variability among results.ResultsThis ongoing study is funded by a Brazilian national funding agency (CNPq- 400736/2014-4). We expect that the tutored theoretical-practical training will improve the undergraduate students’ performance in the detection of caries lesions and subsequent treatment decisions, mainly in terms of long-term retention of knowledge. Our hypothesis is that tutored theoretical-practical training is a more cost-effective option for teaching undergraduate students to detect caries lesions.ConclusionsIf our hypothesis is confirmed, the use of laboratory training in conjunction with theoretical classes could be used as an educational strategy in Cariology to improve the development of undergraduate students’ skills in the detection of caries lesions and clinical decision-making.

Introdução Dentes natais são aqueles presentes na cavidade oral no nascimento. Aparecem comumente na mandíbula, podendo interferir na alimentação. Objetivo: Relatar o caso clínico de um paciente de vinte e quatro meses de vida, do gênero masculino, levado pela mãe à clínica de odontopediatria, com dificuldade de alimentação. Método: Durante a anamnese, a mãe relatou a presença de dentes no lactente, desde o nascimento, e a perda de peso. Ao ser submetido a exame clínico, observaram-se dois dentes na região de incisivos inferiores, com bastante mobilidade. Em seguida, ao ser submetido a exame radiográfico, constatou-se que eram os dentes 71 e 81. Resultado: Optou-se por extraí-los, pois não estavam bem implantados, havendo o risco de aspiração pelo bebê. Após dez dias, verificou-se que houve ganho de peso e a abordagem mostrou-se indicada e eficaz. Conclusão A decisão de tratamento depende do conhecimento científico do cirurgião-dentista, da avaliação radiográfica, do grau de mobilidade dentária e da avaliação da amamentação.

RESUMOO objetivo deste estudo foi analisar as radiografias intrabucais realizadas no Setor de Radiologia, determinando o tipo de erro mais comum e relacionando-o com o tempo e região radiografada. Para tal, dois examinadores previamente calibrados entre si (Kappa= 0,83) observaram as radiografias quanto ao erro de técnica e erro de processamento. Os dados foram analisados pela estatística descritiva e através do teste do qui-quadrado de Pearson e Fisher, quando aplicável. Os resultados demonstraram que, do total de 281 radiografias analisadas, em 224 (79,7%) foi identificado algum tipo de erro. Quanto aos erros de técnica, a maior porcentagem ocorreu por angulagem vertical incorreta em 79 (28,1%), e quanto aos erros de processamento, 42 (14,9%) por manchas. Quando avaliada a relação do tipo de erro com a arcada radiografada, a angulagem vertical manteve-se como o erro mais comum na arcada superior 58 (41,1%), porém, na arcada inferior o erro mais comum foi por corte do dente ou parte dele, 39 (35,5%). Quando avaliado o tempo da disciplina e o tipo de erro, observou-se diferença estatisticamente significante entre o início e o término da Disciplina quanto à presença de erro de angulagem vertical (p=0,001). Pode-se concluir que o erro de técnica mais comum foi angulagem vertical e de processamento (manchadas), havendo diminuição durante a prática do ensino. Descritores: Fotografia dentária • Radiografia dentária • Controle de qualidade ABSTRACTThe aim of this study was to analyze the intraoral radiographs performed in the Radiology, determining the most common type of error and relating it to the time and region imaged. To this end, two calibrated examiners together (Kappa = 0.83) observed radiographs as technical and processing errors. The data were analyzed using descriptive statistics and chi-square test and Fisher, when applicable. The results showed that from a total of 281 analyzed radiographs, in 224 (79.7%) were identified some types of error. The errors of technique, the highest percentage was incorrect vertical angulation by 79 (28.1%), and processing errors, 42 (14.9%) of spots. When evaluating the relationship of the type of error with the arcade imaged, the vertical angulation remained as the most common mistake in the upper arch, 58 (41.1%); however, in the lower arch was the most common mistake by cutting the tooth / 39 part of it (35.5%). When measured time of discipline and type of error, there was a statistically significant difference between the beginning and the end of the Discipline for the presence of vertical angulation error (p = 0.001). It can be concluded that the most common technique error was the vertical angulation and processing (stained), with decrease during teaching practice.

Objective: To characterize the profile of patients with special needs assisted at a Dentistry School of a Brazilian University. Material and Methods: A retrospective and descriptive study was carried out through the analysis of 329 dental records from individuals with special needs assisted at the Dentistry for Special Needs Patients discipline between 2012 and 2017. Data on gender, age, race, monthly family income, schooling, medical diagnosis of the disabling condition, drug used and type of dental procedures performed were reviewed. Data were analyzed by descriptive and inferential statistics (Shapiro-Wilk and t-student tests) with 5% significance level. Results: There was higher prevalence of females (50.5%) aged 45-54 years (18.7%), low schooling (36.2%) and monthly income of 1 minimum wage (61.9%). Most special needs were chronic systemic diseases (67.2%) and endocrine-metabolic diseases (16.7%). Among patients investigated, 66.3% used anti-hypertensive (38.3%) and anti-inflammatory (20.6%) drugs. Of dental procedures performed, curative procedures were the most prevalent in the majority of patients (90.6%). Conclusion: The profile of most patients with special needs was characterized by females with chronic systemic diseases and mean age of 39.6 years, low schooling and monthly family income of up to 1 minimum wage, whose main reason for the visit was the search for curative dental treatment.