Introduction:

periapical radiography constitutes the classic and more used method in Dentistry, which can be carried out with bisectal direction or by parallelism, reaching this last one, a generalization and marked efficacy due to the development of system positioners and a coating approach.

Objective:

to determine the effectiveness of periapical radiographic methods by bisection and parallelism at Antonio Briones Montoto Dentistry Teaching Clinic.

Methods:

a cross-sectional descriptive study was carried out between December 2017 and April 2018 in the Radiology Department of the chosen dentistry clinic in a sample of 80 patients, who were given a periapical radiography by bisection and another by parallelism of the region of bicuspids and/or upper molars by trained students of the fourth academic-year of dentistry studies and comparing the images obtained.

Results:

partial images were produced in 12,5 % and 4 % with bisection and parallelism respectively. The most frequent distortions were the overlapping of the maxillary sinus and zygomatic floor to the roots in 45 and 26,5 % with bisectal direction, 10 and 5 % with parallelism; while the need to repeat X-rays was 25 and 6,25 % respectively.

Conclusions:

by the periapical and parallelism methods using XCP systems, all the images produced presented a total approach, with scarce and slight distortions of the images saving resources because the need to repeat X-rays was minimal, in addition, it was very easy to learn and perform by novel personnel.

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