Posición de las terceras molares mandibulares según la clasificación de Pell y Gregory en radiografías panorámicas en un Centro Radiológico De Huancayo – Perú 2018.

The third mandibular molars are involved in various pathologies due to the lack of space for their eruption or associated with other pathologies that can cause complications in people's health. Therefore, most of them require their extraction. By the exposed, main justification of this work is social because it allows for better decision making when carry out planning and surgical intervention, avoiding or minimizing post-operative complications. The main objective was to determine the most frequent position of third mandibular molars, according to Pell and Gregory classification in panoramic x rays at the -ZERO, Huancayo 2018. Regarding the methodology used by the sequence of studies period, it is retrospective crosssectional and according to its level it was descriptive. The sample was not probabilistic, for convenience, consisting of 396 panoramic radiographs in an age range of 18 to 40 years. In relation to the results, it is observed that a total 792 third mandibular molars, excluding missing parts, there is a higher prevalence of class II position B with 37.5 percent (n = 297), followed by class II position A with 22.5 percent (n = 178) and class I position A with 18.8 percent (n = 149) of the total. Therefore, it was concluded that there is a higher prevalence of class II position B, in both sexes and in most age groups in the panoramic x-rays evaluated.