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ISSN 2007-4360 (Print)
Asociación Mexicana de Periodontología, Colegio de Periodoncistas A.C

2012, Number 2

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Rev Mex Periodontol 2012; 3 (2)

Frecuency of lower molars with radix

Cañizares CA, Vega YA, Fayad HS

Language: Spanish
References: 15
Page: 72-76
PDF size: 549.68 Kb.


ABSTRACT

Background: Mandibular molars may present anatomic variations; one of which is the one called radix entomolaris or paramolaris, depending on its location. This extra root, has been widely described in the endodontic field, but in periodontics is not well known. There are several prevalence studies, finding differences between races. The purpose of this retrospective radiographic analysis is both to identify the prevalence of radix in first and second mandibular molars, and to remark some of the considerations that may facilitate the observation of this anatomic variation. Material and methods: Periapical radiographs of patients with a minimum of a first or second mandibular molar were analyzed. Three examiners were trained according to specific observation parameters to determine the frequency of molars with three roots. Results: Fifteen hundreed files were examined, where the 4.13% of patients presented mandibular molars with three roots, with a unilateral occurrence of 79.03% and bilateral occurrence of 20.97%. Of the total of molars studied, 1.95% had this anatomic variation, being 2.44% first molars and 0.11% for second molars. Conclusions: Data obtained suggests that the percentage of mandibular molars with three roots is low, but still is an important contributing factor for periodontal disease, treatment and prognosis.


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