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VOLUME 17 , ISSUE 7 ( July, 2016 ) > List of Articles

RESEARCH ARTICLE

Single vs Two-session Root Canal Treatment: A Preliminary Randomized Clinical Study using Cone Beam Computed Tomography

Claudia de Castro Rizzi-Maia, Etevaldo M Maia-Filho, Raquel AB Segato, Francisco WG Paula-Silva, Sângela M da Silva Pereira, Léa AB da Silva

Citation Information : de Castro Rizzi-Maia C, Maia-Filho EM, Segato RA, Paula-Silva FW, da Silva Pereira SM, da Silva LA. Single vs Two-session Root Canal Treatment: A Preliminary Randomized Clinical Study using Cone Beam Computed Tomography. J Contemp Dent Pract 2016; 17 (7):515-521.

DOI: 10.5005/jp-journals-10024-1882

Published Online: 01-07-2016

Copyright Statement:  Copyright © 2016; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aims

To compare root canal treatment of teeth with apical periodontitis (AP) in a single or two visits, using cone beam computed tomography (CBCT).

Materials and methods

Twenty-six pairs of teeth (13 patients) were assigned to two groups: Group single-session (GSS): Instrumentation and root canal filling in the same session; and group two-session (GTS): A calcium hydroxide intracanal medication (Calen® paste) was used for 14 days between two sessions. Cone beam computed tomography scans were obtained before and 12 months after treatment. The pre- and postoperative volume of the AP lesions was measured in mm3. The percentages of volume reduction was compared using Student's t-test and the existence of significant difference between the groups for cases with ≤50% or > 50% lesion volume reduction was assessed by chi-squared test ratio likelihood test (α = 5%).

Results

The volume reduction was greater in GTS (79.25%) than GSS (68.35%), though without significant difference (p > 0.05). After 12 months, complete repair was not observed in any specimen. Lesion volume reduction > 50% was significantly greater with the use of an intracanal medication (p < 0.05).

Conclusion

Twelve months posttreatment, CBCT did not show complete repair in any of the teeth, suggesting that this follow-up period is not sufficient for complete lesion regression. In both groups, similar AP lesion volume reduction was observed after 12 months, with a more advanced repair (> 50% volume reduction) in the teeth medicated with calcium hydroxide intracanal dressing.

Clinical significance

Calcium hydroxide intracanal dressing provided clinical evidence to indicate its use in teeth with apical periodontitis prior to definitive root canal filling.

How to cite this article

de Castro Rizzi-Maia C, Maia-Filho EM, Nelson-Filho P, Segato RAB, de Queiroz AM, Paula-Silva FWG, da Silva Pereira SM, Borges AH, da Silva LAB. Single vs Twosession Root Canal Treatment: A Preliminary Randomized Clinical Study using Cone Beam Computed Tomography. J Contemp Dent Pract 2016;17(7):515-521.


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