This randomized prospective clinical study will be conducted at the postgraduate clinics,
Department of Conservative Dentistry, at Jordan University of Science and Technology.
Ethical approval will be sought from the JUST Institutional ethics and human Research
Board (IRB) committee.
Sample size and randomization A total of 44 adult patients will be recruited for this
clinical trial. Participants will be randomly allocated to one of the two treatment
modalities. Randomization will be carried out by sealed envelope online software.
For the observational part of the study, no randomization or blinding will be applied.
Patients will be treated free of charge and their travel expenses will be compensated for
all follow up visits.
Preoperative management :
Clinical and radiographic assessment :
- The patient demographic information, chief complaint and history of the chief
complaint, medical and dental history will be registered. A thorough extra-oral and
intra-oral examination will be undertaken (an existing swelling , sinus tracts,
quality of coronal restoration margins and its history, occlusal relations, gingival
biotype , any gingival recession and periodontal assessment ) will be registered .
Percussion and palpating tests will be applied. Pre-operative parallel Digital view will
be obtained using film holder showing the entire lesion and at least 2 mm beyond it.
Limited view cone beam computed tomography scan of the diseased tooth will be obtained
for each patient preoperatively (SFV).
Root length and axis, Lesion size and features, bone crest level and any radiographic
abnormality will be interpreted and registered.
All patients will receive periodontal scaling a week or two before the surgery. Surgical
procedure Prior to surgery , patients will be asked to rinse their mouth with
chlorhexidine 0.12% . After which, local anesthesia containing epinephrine will be given.
The surgical flap design and procedure will be selected as per case deem , and the flap
will be elevated gently and retracted.
The Root apex will be located and osteotomy will be applied. The resected root will be
rinsed , dried and and stained with 1% methylene blue dye after which , it will be
inspected carefully under high magnification, to identify possible reasons for the non
surgical root canal treatment failure. Subsequently, ultrasonic apical preparation will
be performed. After achieving adequate haemostasis with Epinephrine pellets (Gingi-Pak ,
California state , USA),Biodentine retrograde filling material will be placed. The flap
will be re-approximated and interrupted suture using non-absorbable monofilament size 5-0
suture will be applied. Finally, Post-operative parallel Digital view will be obtained
using film holder showing the entire lesion and at least 2 mm beyond it.
Post-operative management :
Immediately after the microsurgery the patients will be asked to apply cold ice packs on
the surgical site for 20 mins at the clinic, during this time the post-operative
instructions will be given .