Methods (differential diagnosis, investigations, and
treatment method)
the treatment started with the administration of local anesthesia using
a buccal infiltration of 1.8 ml of 2% lidocaine with 1:100000
epinephrine (Daroupakhsh, Tehran, Iran). A rubber dam was placed to
ensure an aseptic environment. The access cavity was prepared using a
high-speed diamond round bur No. 2 (Jota AG, Rüthi, Switzerland) under
continuous water spray.
The orifices were negotiated with #8 and #10 K‐files (Mani Inc.,
Utsunomiya, Japan). Working length was determined as 25mm by an
electronic apex locator (Dempex, DEM Ltd., Barnstaple, Devon, England),
which was confirmed radiographically
(Figure 2.B).Root
canal were chemomechanically prepared by crown‐down technique with M3
rotary files (UDG, Changzhou, China) up to size 25/04 under copious
irrigation with 5.25% sodium hypochlorite and normal saline,
alternately. After taking cone‐fitting confirmation radiograph
(Figure 2.C),
all canals were dried with sterile paper points (META, Chugbuk, South
Korea) and obturated with gutta‐percha (META, Chugbuk, South Korea) and
AH plus sealer (Dentsply DeTrey, Konstanz, Germany) using warm vertical
technique by FastFill warm obturator (Fast Fill Obturation System,
Eighteeth, china).The irrigation of root canal system process followed
the protocol described in Case 1. Cavit (Cavisol, Tehran, Iran) was
applied as a temporary restoration
(Figure 2D)
and the patient was referred to the department of prosthetics for
permanent restoration.