Resumo

PINHEIRO, José Thadeu; BARROS, Gláucia Alves do Rêgo; ASANO, Priscila Naomi Kawamura  e  CAMARA, Andréa Cruz. Radiographic comparative study of the apparent tooth length through two evaluation methods. Odontol. Clín.-Cient. (Online) [online]. 2011, vol.10, n.1, pp. 65-68. ISSN 1677-3888.

The aim of this research was to evaluate the apparent tooth length, obtained by the endodontic millimetered ruler, compared with those obtained through the compass needle point in periapical radiographs of the endodontic treatment at Clinical of Endodontics II of the Federal University of Pernambuco. Two hundred periapical radiographs were analyzed in the light box with the aid of a magnifying lens with 5X magnification. The apparent tooth length's measurements were performed with a millimetered ruler and compass needle point. The data were statistically analyzed. The error's margin in the decision of the statistical tests was 5.0%. The concordance correlation coefficient between the two methods was 0.80 with interval 0.75 to 0.84. The average length was 0.62mm higher when the method was the compass needle point measurement than the millimetered ruler measurement. According to the methodology used, it was concluded that there was no agreement between the two evaluation methods. The average of the apparent tooth length was higher when the measurement was taken with the compass needle point than with the endodontic millimetered ruler.

Palavras-chave : Root canal; Compass needle point; Working length; Odontometry; Endodontic millimetered ruler.