Results 201 to 210 of about 236,266 (245)

The position and topography of the apical canal constriction and apical foramen

International Endodontic Journal, 1984
Abstract. Two hundred and seventy extracted human teeth of unknown age were evaluated for apex to foramen and apex to constriction distances, in addition the topography of the apical portion of the root canal was studied under × 20 magnification. The mean A–F distance was 0.38 mm and the mean A–C distance 0.89 mm, although it must be stressed that a ...
P M, Dummer, J H, McGinn, D G, Rees
openaire   +2 more sources

Effect of Three NiTi Files on Transportation of the Apical Foramen

International Endodontic Journal, 2014
AbstractAimTo compare landed and nonlanded rotary file overinstrumentation on transportation of the apical foramen in the curved canals of extracted teeth.MethodologySeverely curved molar root canals (n = 45) were distributed into three equal groups (n = 15) according to angle (mean 54°) and radius of curvature (mean 5 mm). Canals were overinstrumented
T Švec
exaly   +3 more sources

The effect of apical foramen patency on condensation stresses

Dental Traumatology, 1986
Abstract Mathematical models and computer‐based engineering tools were used to evaluate the effect of a patent or closed apical foramen on stresses that are produced within gutta‐percha during condensation. We examined a mathematical model of a tapered canal with a definite constriction and compared the results when the apical foramen was closed or ...
D R, Gimlin, C H, Parr, G, Aguirre-Ramirez   +2 more
openaire   +2 more sources

The ability of the radiograph to determine the location of the apical foramen

International Endodontic Journal, 1991
Summary. An in‐vitro radiographic study of human teeth was performed in order to evaluate the ability of radiographs to determine the location of the apical foramen. The tip of an endodontic file was positioned at the apical foramen of each canal in 117 extracted human teeth (213 canals) and in 56 teeth (92 canals) still within the alveolus of dried ...
A K, Olson, A C, Goerig, R E, Cavataio, J, Luciano   +3 more
openaire   +2 more sources

Mental Foramen and Apical Foramen: A Dangerous Anatomical Proximity

Australian Endodontic Journal
AbstractThe study evaluated the spatial position of the mental foramen (MF) using 300 cone‐beam computed tomography. The spatial position was analyzed with the horizontal location and relative location (distance between apical foramen and MF). The horizontal location was assessed through three positions (positions 1, 2, and 3).
Deniz Yanık, Ahmet Mert Nalbantoğlu
exaly   +5 more sources

The Morphology of the Apical Foramen in Posterior Teeth in a North Indian Population

International Endodontic Journal, 2009
AbstractAim  To determine the position and shape of the apical foramina in posterior teeth derived from an Indian population.Methodology  A total of 800 freshly extracted maxillary and mandibular premolar and molar teeth from a native Haryana population were collected.
Sanjay Tewari
exaly   +3 more sources

The relationship of the apical foramen to the anatomic apex of the tooth root

Oral Surgery, Oral Medicine, Oral Pathology, 1972
Abstract Eight hundred and seventy-seven teeth were examined to determine the frequency, direction, and distance of deviation of the major formen from the anatomic root apex. The frequency of deviation averaged 92.4 per cent, depending on the class of tooth examined.
J G, Burch, S, Hulen
openaire   +2 more sources

Topographical Evaluation of the Major Apical Foramen in Permanent Human Teeth

International Endodontic Journal, 2009
AbstractAim  To determine the distance from the anatomical root apex to the major apical foramen and the position of the major foramen on the root apex.Methodology  Crowns of 926 human teeth were sectioned at the cementum‐enamel junction. Specimens were mounted on microscope slides for measurement parallel to the long axis of the teeth.
Carmen María Ferrer-Luque, Josué Martos   +1 more
exaly   +3 more sources

Ex Vivo Evaluation of the Accuracy of Electronic Foramen Locators in Root Canals With an Obstructed Apical Foramen

Journal of Endodontics, 2015
The objective of the present study was to evaluate the accuracy of electronic foramen locators (EFLs), Root ZX II (RZX; J. Morita, Tokyo, Japan), Propex II (Dentsply Maillefer, Ballaigues, Switzerland), and Apex ID (AID; SybronEndo, Glendora, CA), in root canals with an obstructed apical foramen (OAF) and to compare them with those 1.0 mm short of the ...
Nilton Vivacqua-Gomes, Rodrigo Ricci Vivan, Pedro Duarte   +2 more
exaly   +3 more sources

Morphology of apical foramen in permanent molars and premolars in a Turkish population

Acta Odontologica Scandinavica, 2012
To determine the number, shape and diameter of minor apical foramina, the distance between apical foramina and anatomical apex and the frequency of accessory foramina in a Turkish population.Eight hundred permanent maxillary and mandibular teeth were collected.
YEŞİLDAL YETER, KÜBRA, AYRANCI, LEYLA BENAN, KÖSEOĞLU, MUSTAFA, ARSLAN, HAKAN   +3 more
openaire   +4 more sources