Summary:
Purpose: To evaluate radiographic healing of teeth with apical periodontitis treated in (a) 1 visit or (b) 2 visits, either without or with the addition of calcium hydroxide as an intracanal medicament
N= 102 cases Inclusion: Teeth with AP
Materials/Methods:
•The patients were assigned randomly into 3 treatment groups:
(O: single visit, C: multiple visits with CaOH for at least 1 week, E: multiple visits without CaOH)
•All the patients were treated by 1 operator with standardized instrumentation technique, irrigation with 2.5% NaOCl and obturation with laterally condensed GP and Roth 801 sealer.
•9 observers evaluated the healing radiographically after 1 year using (PAI) Scoring
Most highlighted Results:
When the base line PAl scores were controlled (PAI > 3):
•CaOH group: showed the most improvement in PAl score (3, 4, or 5 to 1 or 2), (74%) were healing •Single visit group: (64%) were healing
•The teeth that were left empty between visits had clearly inferior healing results
Clinical significance
The additional disinfecting action of CaOH before obturation resulted in a 10% increase in healing
