Purpose: to investigate the importance of obturation in healing of periapical periodontitis.
N= 56 root canals in 28 3rd and 4th bilateral lower premolar teeth with completely formed apices in 7 dogs.
- PA lesions were induced in all the teeth by pulp extirpation and leaving the canals open to the oral environment.
- The teeth were divided into 2 groups: control and experiment group.
- teeth in the control group were accessed, instrumented irrigated and oburated by cold lateral compaction.
- teeth in the experiment group were accessed, instrumented irrigated but not obturated.
- In both groups, the teeth were sealed coronally.
- after 6 months, animals were killed, 5-m thick sections were obtained from each root and stained with for histological
Most highlighted Results:
- The control group (with obturation) showed less cementum and dentin resorption in comparison with test group (no obturation) (P<0.05)
- No statistically significant difference was found in other parameters between the control and test groups (table 1).
- No difference in healing of apical periodontitis between the 2 groups
obturation is not significant for endodontic treatment success.