Comparison Between M-Pro and ProTaper Next

Lower molars with symptomatic Irreversible pulpitis molars are selected according to the eligibility and exclusion criteria and patients are then randomized to receive treatment either using M-pro Files or ProTaper Next files. Postoperative pain is then assessed using the Numerical Rating scale 6, 12, 24, 48 and 72 hours post-operatively . After completing the treatment, patients will instructed to take placebo if they feel pain and will be asked to provide the quantity of placebo intake until 72 hrs. In case of pain not relieved by placebo, after recording the amount of pain, the patient will be instructed to take an alternative line of pain control (Ibuprofen 400mg tablets every 6 hours). The amount and frequency of Ibuprofen intake will be recorded.

Inclusion criteria

• 1- Males or Females.
• 2- Mandibular molar teeth with:

• Pre-operative sharp pain.
• Vital response of pulp tissue to cold pulp tester (ethyl chloride spray).
• Normal periapical radiographic appearance or slight widening in lamina dura using periapical index (PAI) score 1 as normal periapical structures or 2 as small changes in bone structures.

Exclusion criteria

• Patients having significant systemic disorders.
• Patients who are allergic to non-steroidal anti-inflammatory drugs.
• Patients with two or more adjacent teeth requiring root canal therapy.
• Teeth that have:

• Necrotic pulp tissues.
• Association with swelling or fistulous tract.
• Acute or chronic peri-apical abscess.
• Greater than grade I mobility.
• Pocket depth greater than 5mm.
• No possible restorability.
• Previous endodontic treatment.