25% sodium hypochlorite solution (NaOCI) positioned 1-2 mm below the root canal orifice
In dilacerated teeth, the accepted basic endodontic techniques must be strictly followed, that is, good preoperative and working radiographs, unobstructed access to the root canal orifice
, as direct access as possible to the apical-third of the canal, thorough irrigation and hermetic seal.
A metallic device, 7mm in height, 2cm in diameter, and with a central opening slightly larger than the diameter of the root canal orifice
was used to hold the tooth sections.
The root canal orifice
in group D was covered with Cavit and all the surfaces were covered with two layers of nail varnish.
Exploration of the root canal orifices
resulted in finding one buccal and two palatal orifice (Initially).
New technologies such as the dental operating microscope and dental loupes should not be underes- timated as they offer magnification and illumination of the operating field and substantially improve the visualization of root canal orifices
A cone-beam computed tomography study of the root canal morphology of mandibular first premolars and the location of root canal orifices
and apical foramina in a Chinese subpopulation.
Diagnostic measures such as multiple pre-operative radiographs examination of the pulp chamber floor with a sharp explorer toughing of grooves with ultrasonic tips staining the chamber floor with 1% methylene blue dye performing the sodium hypochlorite champagne bubble' test and visualizing canal bleeding points are important aids in locating root canal orifices
Coronal flaring for all root canal orifices
was performed with Gates Glidden drills.
Diagnostic measures such as multiple pre-operative radiographs, RVG, CT scan, examination of pulp chamber floor with a sharp explorer, Troughing of grooves with ultrasonic tips, staining the chamber floor with 1% methylene blue dye, performing the NaOCl 'champagne bubble' test and visualizing canal bleeding points are important aids in locating root canal orifices