O objetivo deste trabalho foi avaliar in vivo, a confiabilidade do localizador eletronico Bingo,
na determinacao do comprimento de trabalho, em situacoes de polpa vital e necrosada. Foram
realizadas 56 afericoes eletronicas em pacientes entre 15 e 65 anos de idade, em tratamento na
Disciplina de Endodontia da Universidade Luterana do Brasil (ULBRA – Canoas/RS). Dos dentes
estudados, 25 possuiam canais com polpas vitais e 31, com polpa necrosada. Apos isolamento absoluto
e abertura coronaria, estando a alca labial devidamente posicionada, introduziu-se, no interior do canal
radicular, uma lima endodontica de 25 ou 31 mm conectada a um dos polos do aparelho, de diâmetro
compativel com a anatomia do terco apical. Quando o visor do localizador eletronico acusava estar a
ponta do instrumento a 1mm da saida foraminal, os dentes foram radiografados. Com o auxilio de uma
lupa, regua milimetrada e negatoscopio, foi mensurada, na radiografia, a distância entre a ponta do
instrumento e o vertice radiografico. Medidas compreendidas entre 0,5mm e 1,5mm foram
consideradas confiaveis. Os resultados obtidos mostraram indice de confiabilidade de 92% para dentes
com polpa viva e 83,87% para dentes com polpa mortificada. O localizador apical Bingo constitui-se
em um excelente recurso auxiliar na odontometria, quando corretamente empregado.
UNITERMOS: odontometria; canal radicular; endodontia.
SUMMARY
The aim of this study was to determine, in vivo, the ability of Bingo electronic apex locator to
determine root length in vital and non vital teeth. For this purpose, 56 measurements were proceeded
in patients aging 15 to 65 years, undergoing treatment at the Endodontics Discipline of the Brazilian
Lutheran University (ULBRA – Canoas/RS). The teeth comprised of 25 vital pulp root canals and 31
with necrotic pulps. Following rubber dam placement and access cavity, with the liphook adequately
positioned, a # 25 to 31 K-file, connected to the Bingo device was placed within the root canal. The
file diameter was compatible to the canal at the root apex. When the screen would denote the file to be
1mm short of the apex, radiographs were taken. With the help of magnifying lenses and a ruler, the
distance between the tip of the instrument and the radiographic vertex was measured. Values between
0.5 and 1.5mm were considered adequate. The results showed 92% of measurements within the
adequate limits in teeth with vital pulps and 83.87% in cases of necrotic pulps. Bingo apex locator was
considered an axcelent means to help root length determination, when used adequately.
UNITERMS: root length; root canal; endodontics.
[1]
A. Kielbassa,et al.
Clinical evaluation of the measuring accuracy of ROOT ZX in primary teeth.
,
2003,
Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics.
[2]
E A BeGole,et al.
An in vivo evaluation of an electronic apex locator that uses the ratio method in vital and necrotic canals.
,
1998,
Journal of endodontics.
[3]
K Gulabivala,et al.
An in vivo evaluation of the ENDEX and RCM Mark II electronic apex locators in root canals with different contents.
,
1995,
Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics.
[4]
C Kobayashi,et al.
Electronic canal length measurement.
,
1995,
Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics.
[5]
J. Simon,et al.
In vivo measurement accuracy in vital and necrotic canals with the Endex apex locator.
,
1993,
Journal of endodontics.
[6]
R. T. Leonardo,et al.
Neutralizaçäo progressiva (coroa/ápice) do conteúdo séptico-tóxico do canal radicular
,
1991
.
[7]
João Humberto Antoniazzi,et al.
Endodontia: bases para a pratica clinica
,
1991
.
[8]
R. Olson,et al.
Clinical evaluation of five electronic root canal length measuring instruments.
,
1990,
Journal of endodontics.
[9]
T. Saito,et al.
Electronic determination of root canal length by newly developed measuring device. Influences of the diameter of apical foramen, the size of K-file and the root canal irrigants.
,
1990,
Dentistry in Japan.
[10]
C M Bramante,et al.
A critical evaluation of some methods of determining tooth length.
,
1974,
Oral surgery, oral medicine, and oral pathology.
[11]
N Inoue,et al.
An audiometric method for determining the length of root canals.
,
1973,
Journal of the Canadian Dental Association.
[12]
F. Weine,et al.
Position of the apical foramen in relation to endodontic therapy.
,
1971,
Journal of the Canadian Dental Association.
[13]
O. E. Langland,et al.
A study of radiographic longitudinal distortion of anterior teeth using the paralleling technique.
,
1966,
Oral surgery, oral medicine, and oral pathology.
[14]
I. Sunada.
New Method for Measuring the Length of the Root Canal
,
1962
.
[15]
Y. Kuttler,et al.
Microscopic investigation of root apexes.
,
1955,
Journal of the American Dental Association.