pulpitis
Conditions
Interventions
Experimental group TruNatomy group
:Gold heat treated Ni-TI file TruNatomy (Dentsply, USA)
Control group Hyflex CM group:Hyflex CM (Coltene, Switzerland)
Sponsors
Peking University Stomatological Hospital
Eligibility
Sex/Gender
All
Age
18 Years to 70 Years
Inclusion criteria
Inclusion criteria: (1) Patients were =18 years old with complete apical development; (2) The affected teeth were the first and second molars of the maxillary and mandibular; (3) The affected teeth had not received root canal therapy; (4) The affected teeth had S-shaped curvature assessed by CBCT before surgery, with each curvature =25o; (5) The affected teeth had no severe periodontitis, with each degree of mobility =Io; (6) Chronic pulpitis.
Exclusion criteria
Exclusion criteria: (1) patients with severe systemic or systemic diseases; (2) patients with obvious calcification or abnormal morphology of root canal; (3) root fracture, apical and root canal internal and external absorption; (4) acute/chronic periapical periodontitis.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Clinical treatment: root canal preparation time, working length variation, instrument fracture, and other adverse morphology.;Quality of root canal preparation:Preoperative CBCT and postoperative CBCT were compared to record the straightening and deviation of the root canal.;Pain after root canal preparation;number of cyclic fatigue,NCF; | — |
Secondary
| Measure | Time frame |
|---|---|
| Nickel-titanium file surface micro crack, thread loosening, thread tightening and other abnormal morphology.;Phase transition behavior of nickel-titanium file; | — |
Countries
China
Contacts
Public ContactWenxin Chen
Peking University Stomatological Hospital second outpatient department
Outcome results
None listed