Estudo comparativo da atividade antifúngica de cimentos endodônticos e do agregado de trióxido mineral (MTA) / Comparative study of the antifungal activity of endodontic sealers and mineral trioxide aggregate (MTA)

O objetivo deste estudo in vitro, foi avaliar a atividade antifúngica do ProRoot MTA (agregado de trióxido mineral) e de sete cimentos endodônticos contra as seguintes espécies: Candida albicans, Candida glabrata, Candida tropicalis e Saccharomyces cerevisiae. O teste de difusão em ágar foi o método utilizado. Placas de Petri contendo o meio triptcase-soja ágar foram inoculadas com cada espécie de fungo testada ou com saliva humana, representativa de uma cultura microbiana mista. Os resultados permitiram classificar os cimentos testados em ordem decrescente de eficácia antifúngica: Intrafil, AH Plus, Kerr Pulp Canal Sealer, Epiphany, MTA, Sealer 26, Acroseal e Roeko Seal. Nenhum material foi eficaz contra todas as espécies testadas.

Postoperative pain following the use of two different intracanal medications.

This study evaluated the incidence of postoperative pain after intracanal dressings with either 0.12% chlorhexidine digluconate gel (CHX) or a calcium hydroxide/camphorated paramonochlorophenol/glycerin paste (CH/CPMC). Overall, 138 asymptomatic teeth had their canals instrumented under irrigation with 2.5% NaOCl and then dressed with either CH/CPMC or CHX. The incidence of different intensity levels of postoperative pain was registered for the period between appointments. Data revealed that 84% of the total number of cases treated with either medicament showed absence of any level of pain. No case medicated with CH/CPMC and four cases (5.8%) medicated with CHX were categorized as flare-ups. There were no statistically significant differences between all possible comparisons involving the two medicaments in treatment/retreatment cases and teeth with/without apical periodontitis lesions. The low incidence of postoperative pain after the use of both medications, coupled to their antimicrobial effectiveness, gives support to using one or the other in routine treatment/retreatment.

Incidence of postoperative pain after intracanal procedures based on an antimicrobial strategy.

The purpose of this prospective study was to evaluate the incidence of postoperative pain after intracanal procedures based on an antimicrobial strategy. Data were examined from 627 teeth that had necrotic pulps or required retreatment. Information was obtained for each patient treated with regard to presence of preoperative pain. Occurrence of periradicular bone destruction detected by radiographs was also recorded. The operators consisted of undergraduate students, who were in their first year of clinical training. Root canals were instrumented and then medicated with a calcium hydroxide/camphorated paramonochlorophenol paste. No systemic medication was prescribed. Approximately 1 week after the initial appointment, patients were asked about the occurrence of postoperative pain and the level of discomfort was rated as no pain, mild pain, moderate pain, or severe pain. Data were statistically analyzed using the Chi-square test. Mild pain occurred in 10% of the cases, moderate in 3.3%, and severe (flare-up) in 1.9%. Postoperative pain was significantly associated with the treatment of previously symptomatic teeth without periradicular lesions (p < 0.01). No other correlations were detected between the occurrence of postoperative discomfort and other clinical conditions. There was also no difference regarding the incidence of postoperative pain between treatment and retreatment (p > 0.01). The intracanal procedures used in this study to control root canal infections showed a small incidence of postoperative pain, particularly flare-ups, even performed by inexperienced undergraduate dental students.