pulp inflammation. Necrosis of pulp
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Inclusion criteria: Patients who are assigned to extract two premolar teeth in one jaw for orthodontic treatment plan will be included; Their parents need to read and sign a fully informed form; They shouldn't have any systematic complication or take any medicine during the period of study; The teeth need to be free of any symptom, caries and decalcification; They should give a normal response to pulp sensitivity tests (cold test) compared to the control tooth on the same quadrant; The teeth need to be free of mobility or swelling in the surrounding soft tissues and any sensitivity on palpation or percussion; On radiographic examination no apical lucency or PDL widening should be detected. Exclusion criteria: Any sign of crack; filling; caries or hypocalcification on teeth will cause exclusion. Also the teeth showing apical lucency or PDL widening will be excluded; Any sensitivity to cold, heat or bite will lead to exclusion; The responses beyond the normal limits to pulp vitality testing and any medicine consumption would cause exclusion.
Exclusion criteria
Exclusion criteria:
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Dentinal bridge formation. Timepoint: six weeks after intervention. Method of measurement: microscopic evaluation.;Appearance of the dentinal bridge compared to normal dentin. Timepoint: six weeks after intervention. Method of measurement: microscopic evaluation of appereance of the dentinal bridge compared to normal dentin.;Thickness of the dentinal bridge compared to normal dentin. Timepoint: six weeks after intervention. Method of measurement: microscopic evaluation of thickness of the dentinal bridge compared to normal dentin. | — |
Secondary
| Measure | Time frame |
|---|---|
| Inflammatory status of the pulp. Timepoint: six weeks after intervention. Method of measurement: microscopic evaluation : inflammatory cell count and their distribution. | — |
Countries
Iran (Islamic Republic of)
Contacts
Islamic Azad University, Dental Branch, Tehran