Resumo Este artigo descreve como o aplicativo WhatsApp é utilizado na relação entre pacientes e médicos do ambulatório de pediatria e obstetrícia da Fundação Santa Casa de Misericórdia do Pará, Brasil, e discute suas implicações éticas. Dados foram levantados em pesquisa de campo qualitativa por meio de questionário semiestruturado aplicado a oito médicos. Como resultado, observou-se que entre as situações de uso preferencial do WhatsApp citadas pelos respondentes está o esclarecimento de dúvidas (62,5%). Entre as desvantagens mencionadas pelos participantes está a banalização do uso desse tipo de serviço por parte dos pacientes (37,5%), e 62,5% acham que a utilização do aplicativo seja ética. Conclui-se que faltam pesquisas sobre o assunto e regulamentação do uso do aplicativo na área da saúde.

Abstract This article describes how the WhatsApp application is used in the physician-patient relationship at the pediatrics and obstetrics outpatient clinic of the Santa Casa de Misericórdia Foundation in the State of Pará, Brazil, and discusses its ethical implications. Data was collected in qualitative field research using a semi-structured questionnaire applied to eight physicians. As a result, it was observed that among the situations of preferential use of WhatsApp mentioned by the respondents is the clarification of doubts (62.5%). Among the disadvantages mentioned by the interviewees is the trivialization of the use of this type of service by patients (37.5%), and 62.5% consider the use of the application ethical. We conclude that there is a lack of research on the subject addressed and of regulation of the use of the application in the health area.

Resumen Este artículo describe cómo se utiliza la aplicación WhatsApp en la relación entre médicos y pacientes del ambulatorio de pediatría y obstetricia de la Fundación Santa Casa de Misericordia del Pará, Brasil, y discute sus implicancias éticas. Los datos fueron recogidos en una investigación de campo cualitativa, por medio de un cuestionario semiestructurado aplicado a ocho médicos. Como resultado, se observó que entre las situaciones de uso preferencial del WhatsApp citadas por los médicos entrevistados aparece el esclarecimiento de dudas (62,5%). Entre las desventajas mencionadas por los participantes está la banalización del uso de este servicio por parte de los pacientes (37,5%), y el 62,5% no creen que sea ético el uso de la aplicación. Se concluye que faltan investigaciones sobre el tema y una regulación del uso de la aplicación en el área de la salud.

OBJECTIVE: This study aimed to evaluate the effects of heat treatment on the tribochemical silica coating and silane surface conditioning and the bond strength of rebonded alumina monocrystalline brackets. MATERIAL AND METHODS: Sixty alumina monocrystalline brackets were randomly divided according to adhesive base surface treatments (n=20): Gc, no treatment (control); Gt, tribochemical silica coating + silane application; Gh, as per Gt + post-heat treatment (air flux at 100ºC for 60 s). Brackets were bonded to the enamel premolars surface with a light-polymerized resin and stored in distilled water at 37ºC for 100 days. Additionally, half the specimens of each group were thermocycled (6,000 cycles between 5-55ºC) (TC). The specimens were submitted to the shear bond strength (SBS) test using a universal testing machine (1 mm/min). Failure mode was assessed using optical and scanning electron microscopy (SEM), together with the surface roughness (Ra) of the resin cement in the bracket using interference microscopy (IM). 2-way ANOVA and the Tukey test were used to compare the data (p>0.05). RESULTS: The strategies used to treat the bracket surface had an effect on the SBS results (p=0.0), but thermocycling did not (p=0.6974). Considering the SBS results (MPa), Gh-TC and Gc showed the highest values (27.59±6.4 and 27.18±2.9) and Gt-TC showed the lowest (8.45±6.7). For the Ra parameter, ANOVA revealed that the aging method had an effect (p=0.0157) but the surface treatments did not (p=0.458). For the thermocycled and non-thermocycled groups, Ra (µm) was 0.69±0.16 and 1.12±0.52, respectively. The most frequent failure mode exhibited was mixed failure involving the enamel-resin-bracket interfaces. CONCLUSION: Regardless of the aging method, Gh promoted similar SBS results to Gc, suggesting that rebonded ceramic brackets are a more effective strategy.