Relationship Between Volume of Pterygopalatine Fossa and Block Anesthesia of Maxillary Nerve: A Pilot Study Relaci車n entre el Volumen de la Fosa Pterigopalatina y la Anestesia Troncular del Nervio Maxilar: Un Estudio Piloto

作者：Pedro Aravena Torres; Nicole Cresp Sinning; Katherine Buchner Sagredo; Carlos Muoz Rocha

来源：International Journal of Morphology, 2011.

• Nervio maxilar
• Anestesia
• Fosa pterigopalatina
• Lidocaina
• Exodoncia
• Maxillary nerve
• Anesthesia
• Pterygopalatine fossa
• Lidocaine
• Tooth extraction

Block anesthesia of maxillary nerve 9BAMN) is achieved by depositing anesthesia through greater palatine canal into the pterygopalatine fossa. Authors differ in the amount of anesthesia to be administered and the rate of complications (diplopia and hematomas), Coronado et al., (2008), measured the size of the pterygopalatine fossa finding an average of 1.2 ml, suggesting that amount of anesthesia for BAMN. The aim of this study is to compare the effectiveness of low doses of 1.2 ml (LD)versus traditional dose of 1.8 m. (TD) of anesthesia for BAMN and its adverse effects. A quasi experimental exploratory clinical study was performed involving 82 patients where the anesthetic technique was suitable for tooth extraction procedure; patients were randomized in LD and TD groups, 2% lidocaine with 1:50.000 epinephrine was used. Demographic (sex and age), clinical (tooth for extraction and anesthetic dose) as well as anatomical variables (upper facial and cranial index) were recorded. The anesthetic success (AS) was defined as the possibility to perform the tooth extraction with no pain or minimal pain as measured by visual analogue scale (VAS). For statistical analysis chi-square and t test (p %26lt;0.05) were used. The results show that the pain and AS were 2.93 and 61.67% in LD group and 3.09 and 59.09% in TD group respectively, there were 6 cases of diplopia with no significant statistical difference between groups. El bloqueo troncular del nervio maxilar (BTNM) se logra depositando anestesia v赤a canal palatino mayor en la fosa pterigopalatina. Los autores difieren en la cantidad de anestesia a depositar y la tasa de complicaciones asociadas (diplop赤a y hematomas). Coronado et al. (2008) midi車 el volumen de la fosa pterigopalatina encontrando un promedio de 1,2ml, sugiriendo dicha cantidad de anestesia para el BTNM. El objetivo del presente trabajo es comparar la eficacia de dosis bajas de 1,2ml (DB) versus dosis tradicional de 1,8ml (DT) de anestesia para el BTNM y sus efectos adversos. Se realiz車 un estudio cl赤nico cuasiexperimental de car芍cter exploratorio, participaron 82 pacientes donde la t谷cnica anest谷sica estaba indicada para un procedimiento de exodoncia, los que fueron aleatorizados en los grupos DB y DT, administr芍ndoles lidoca赤na al 2% con 1:50.000 de epinefrina. Se registraron variables demogr芍ficas (sexo y edad), cl赤nicas (pieza a extraer y dosis administrada) y anat車micas (赤ndices facial superior y craneal). El 谷xito anest谷sico (EA) se defini車 como la posibilidad de realizar la exodoncia con nulo o m赤nimo dolor, medido con escala visual an芍loga (E