Projection of the oblique line in periapical radiographs of mandibular molars

Authors

  • Ruchielli Loureiro Borghetti PUCRS
  • Vanessa Paim Nora PUCRS
  • Luis César da Costa Filho
  • Aline Rose Cantarelli Morosolli PUCRS
  • Maria Ivete Rockenbach PUCRS

Keywords:

Crestal bone, alveolar process, mandible

Abstract

Purpose: To identify and quantify the frequency of the projection of the oblique line over the alveolar crests of the mandibular molars in periapical radiographs. Methods: Five hundred periapical radiographs of the mandibular molar region were selected and evaluated for the presence or absence of the oblique line. When present, its interference on the image of the alveolar crest of the mandibular molars was analyzed. The data obtained was expressed as a percentage of the overlap of the oblique line to the alveolar crests of the mandibular molars. Results: The oblique line was observed in 363 out of the 500 periapical radiographs (72.6%). Out of the 363, 308 (84.8%) showed an overlap of the oblique line over the alveolar crests. However, 55 radiographs (15.1%) did not show such interference. Of the radiographs showing an overlap (308), the incidence of an overlap was 64.6% at a single site (199 radiographs), 33.4% at two sites (103 radiographs), and 1.9% (6 radiographs) at three sites. Conclusion: The overlap of the oblique line over the image of the alveolar crests in the mandibular molar region was observed in a significant portion of the total sample.

Author Biographies

Ruchielli Loureiro Borghetti, PUCRS

Dental School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil

Vanessa Paim Nora, PUCRS

Dental School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil

Aline Rose Cantarelli Morosolli, PUCRS

Dental School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil

Maria Ivete Rockenbach, PUCRS

Departamento de Cirurgia Professora das disciplinas de Radiologia, Anestesiologia e Estomatologia.

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Published

2010-11-21

Issue

Vol. 25 No. 4 (2010)

Section

Original Article

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