Radiovisiography versus conventional radiography for detection of small instruments in endodontic length determination. II. In vivo evaluation.
Radiovisiography was compared clinically to conventional D-speed and E-speed radiographs viewed with X 2 magnification using the mesiobuccal root of maxillary molars of 22 patients. Clarity of size 8 and 10 endodontic file tips in relation to the radiographic apex was the object of comparison. Five images of radovisiography, (original, enhanced, negative-to-positive mode), were compared to D-speed and E-speed radiographs. D-speed radiographs were also compared to E-speed radiographs. D-speed radiographs were statistically superior to all five radiovisiography images. Four of the radiovisiography images were equivalent to E-speed radiographs. D-speed radiographs provided superior recognition of small file tips when compared to E-speed radiographs 100% of the time. Accurate identification of the small file tips was achieved on 95% of D-speed and 70% of E-speed radiographs. With radiovisiography, identification was achieved on 95% of the zoom images in the negative-to-positive mode, 86% of enhanced, 82% of standard zoom, and 77% of the images in negative-to-positive conversion.
Ellingsen
M A
MA
Department of Endodontics, University of Washington, Seattle, WA 98195, USA.
Hollender
L G
LG
Harrington
G W
GW
D000328:Adult; D003786:Dental Pulp Cavity / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008963:Molar / Q000000981:diagnostic imaging; D009811:Odontometry / Q000379:methods*; D011856:Radiographic Image Enhancement; D011861:Radiography, Dental / Q000379:methods*; D018915:Root Canal Preparation / Q000295:instrumentation*; D014092:Tooth Root / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D014962:X-Ray Film