It is estimated that about 1 and 5 million third molar extractions are performed each year in the UK and USA, respectively. Despite the existence of defined indications and contraindications for the extraction of these teeth, there is some controversia about the treatment when the third molar is asymptomatic, even in literature. To analyse the indications regarding the extraction of asymptomatic mandibular 3M in a group of experienced Portuguese and Spanish dentists we performed na epidemiological oservational cross-sectional study. We observed that 59.3% of the practicians choose not to proceed with the extraction when facing an asymptomatic 3M and in 93% of the cases, Spanish give the extractions a higher score in terms of difficulty. Degree of difficulty is lower among those with more clinical experience (p0.05; CI 95%). Portuguese dentists are those who tend to extract these teeth more often. We concluded that clinical decision when facing asymptomatic mandibular third molar is related to dentists academic education and surgical experience. Keywords: Asymptomatic third molar, Oral surgery