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Eficacia anestesica da prilocaina lipossomal em tecnica infiltrativa na maxila

Authors: Zago, Patrícia Maria Wiziack, 1982-;

Eficacia anestesica da prilocaina lipossomal em tecnica infiltrativa na maxila

Abstract

Abstract: Animal studies have shown that liposome encapsulation increases prilocaine anesthetic efficacy in soft tissues. This randomized, blind, crossover, three period study evaluated the anesthetic efficacy of liposome-encapsulated 3% prilocaine compared to 3% plain prilocaine and 3% prilocaine with 0.03IU/mL felypressin, after 1.8mL infiltration in the buccal sulcus of the maxillary right canine, in 32 volunteers. The formulations were randomly applied in three sessions, spaced one week apart. Anesthesia success and onset and duration of pulpal anesthesia in the lateral incisor, canine and first premolar were evaluated by using an electric pulp tester; onset and duration of soft tissue anesthesia were evaluated by pinprick test in the buccal attached gingiva of maxillary right canine. Injection pain was analyzed through Visual Analogue Scale (VAS). Anesthesia was considered successful when the onset time was less than 10 minutes and the duration was at least 10 minutes. The volunteers and the researcher who evaluated anesthesia parameters were blind to the formulations injected. Results were submitted to Kruskal-Wallis (onset and duration of pulpal anesthesia), Tuckey (VAS), Friedman (duration of gingival anesthesia), Log-Rank and McNemar tests (anesthesia success), (?=5%). Liposomal prilocaine showed similar results in comparison to plain prilocaine (p>0.05), and lower anesthesia success and duration for canine and premolar and for duration of gingival anesthesia (p0.05); plain prilocaine presented lower success rate and slower onset of anesthesia for this tooth in comparison to prilocaine with felypressin (p0.05). In conclusion, liposomal prilocaine presents similar anesthetic efficacy in relation to plain prilocaine and lower efficacy in comparison to prilocaine with felypressin in maxillary infiltration. Therefore, there is no advantage in the use of this formulation

Resumo: Estudos em animais têm demonstrado que a encapsulação lipossomal da prilocaína aumenta sua eficácia anestésica em tecidos moles. Este estudo randomizado, cruzado e cego teve por objetivo avaliar a eficácia anestésica da formulação lipossomal de prilocaína 3% comparada à prilocaína 3% sem aditivos e prilocaina 3% com felipressina 0,03UI/mL, aplicadas por técnica infiltrativa na região vestibular do canino superior direito em 32 voluntários. As formulações foram aplicadas em 3 sessões, com ordem aleatória de aplicação e intervalo mínimo de 1 semana. O sucesso, a latência e a duração da anestesia pulpar foram avaliados com aplicação de estímulo elétrico no incisivo lateral, canino e primeiro pré-molar superiores; a latência e duração da anestesia em tecidos moles foram avaliadas por pressão com instrumento rombo na gengiva inserida da região vestibular do canino superior direito e a dor à injeção por meio da escala analógica visual (EAV). Considerou-se como sucesso anestésico quando a latência foi menor ou igual a 10 minutos com duração mínima de 10 minutos. Os voluntários e o pesquisador que avaliou as anestesias não tinham conhecimento da formulação aplicada. Os resultados foram submetidos aos testes Kruskal-Wallis (latência e duração da anestesia pulpar), Tuckey (EAV), Friedman (duração da anestesia gengival), Log Rank e McNemar (sucesso). A formulação lipossomal apresentou resultados semelhantes à formulação sem aditivos (p>0,05) e estatisticamente inferiores à prilocaína com felipressina (p0,05) e a prilocaina sem aditivos apresentou menor sucesso e maior latência (p0,05). Conclui-se que a prilocaína lipossomal apresenta eficácia anestésica semelhante à solução sem aditivos e menor eficácia do que a solução de prilocaína com felipressina em infiltração na maxila, não havendo, portanto, vantagem no seu uso

Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba

Orientadores: Maria Cristina Volpato, Eneida de Paula, Francisco Carlos Groppo

Farmacologia, Anestesiologia e Terapêutica

Mestre em Odontologia

Mestrado

Keywords

Lipossomos, Anestesia local, Dental anesthesia, Liposomes, Anestesia Dentária, Anesthesia, Local

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average