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International journal of odontostomatology

versión On-line ISSN 0718-381X

Resumen

RAMIREZ OSSA, Diana; UPEGUI ZEA, Juan Carlos; ESPINAL BOTERO, Gabriel Emilio  y  CHAURRA MARIN, Rosa Cristina. Characterization of Permanent Mandibular Second Molars Impaction in a Southamerican Population. Int. J. Odontostomat. [online]. 2017, vol.11, n.2, pp.165-172. ISSN 0718-381X.  http://dx.doi.org/10.4067/S0718-381X2017000200008.

The objective of this study was to describe the epidemiological characteristics of unilateral permanent mandibular second molars impacted, in a sample from Medellín, Colombia. It was a retrospective study in which we evaluated panoramic radiographs of 6785 patients, for a total of 28 radiographs analyzed in the final sample. The mandibular second molar impacted (study group) and the contralateral not impacted (control group) were correlated, with respect to three reference angles (intermolar, of the oclussal plane and interplanar), sex and impaction side. We found a prevalence of 3.5 for every 1000 radiographs evaluated. The most frequent side of impaction was the right side; two of the three angular measurements (intermolar and interplanar) had the biggest differences between the study and control group. We did not find significant statistical differences between males and females. It was concluded that the prevalence of impacted permanent mandibular second molars is low, there is a highest impaction in the right side, there are no differences between genders, and the use of the interplanar angle is preferable as a measurement to predict the impaction of permanent mandibular second molars (>7.9°).

Palabras clave : impacted tooth; molar; panoramic x-ray; epidemiology.

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