Objectives: To address a literature gap by evaluating, in a larger set of samples, the clinical and radiographic outcomes of pulpectomy in primary maxillary incisors using ZOE and calcium hydroxide/iodoform paste. To also identify the predisposing factors for treatment outcomes.
Study Design: Medical charts of 124 patients (aged 16 to 60 months) and radiographs of their incisors (309 incisors) were reviewed (128 with ZOE and 181 with Metapex). All incisors were restored with composite resin crowns.
Results: The radiographic success rates for ZOE and Metapex were: 85.9% and 82.9% at the 12-month recall, and 69.2% and 64% at the 24-month recall, with no statistically significant difference between the two groups. Clinical failures occurred more frequently in the Metapex group (P = 0.006), as clinical signs of pain and soft tissue pathosis were found in 6.2% of the Metapex cases at 24 months but none in the ZOE group. Significant predisposing factors for radiographic success were type of tooth, degree of obturation at recalls, and preoperative root resorption.
Conclusions: The radiographic success rates are comparable between the ZOE and Metapex groups. Clinical pathological manifestations such as pain and soft tissue pathosis are seen in the Metapex group at recalls, but none in the ZOE group. Predisposing factors such as type of incisor, preoperative root resorption, and extent of filling at recalls are associated with the radiographic success rate.
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