Second Canal in Mesiobuccal Root of Maxillary Molars Is Correlated with Root Third and Patient Age: A Cone-beam Computed Tomographic Study

Reis, Adriana Gurgel de Araújo Rebouças; Grazziotin‐Soares, Renata; Barletta, Fernando Branco; Fontanella, Vania Regina Camargo; Mahl, Célia Regina Winck

doi:10.1016/j.joen.2013.01.003

Cited by 98 publications

(102 citation statements)

References 20 publications

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“…This is in contrast to the results obtained by Silva et al (2014), with frequencies of 42.65% for the maxillary first molar and 34.32% for the second molar, and those obtained by Reis et al (2013), with 91% and 79.3% for the first and second molar, respectively. These differences in frequency reveal the anatomical variability of the mesial root in maxillary molars, which could be explained by the sample size, the observation technique (Peeters et al, 2011) and the patients' ethnicity (Cleghorn et al;Zhang et al, 2011).…”

Section: Discussioncontrasting

confidence: 97%

Assessment of Mesial Root Morphology and Frequency of MB2 Canals in Maxillary Molars using Cone Beam Computed Tomography

Abarca

Gómez²,

Zaror

et al. 2015

Int. J. Morphol.

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SUMMARY:The aim of this study was to assess the morphology of the mesial root canal system of maxillary molars and the frequency of MB2 canals using cone-beam computed tomography (CBCT). A total of 1374 teeth, first maxillary (1MS, n= 802) and second maxillary molars (2SM, n= 572) of 508 Chilean patients between 8 to 77 years were evaluated through CBCT. The mesiobuccal root was evaluated in all three thirds. Root canal morphology was classified according to Vertucci's method. Data were analyzed by Pearson's Chi-square and Cuzick trend tests. MB2 canal frequency in 1MS was 73.44% and in 2MS 42.48%. The most frequent morphology in 1MS and 2MS were Vertucci type II and I, respectively. No statistically significant association was found between frequencies and side or according to gender (P>0.05). A positive association was found as the age increased in both 1MS and 2MS (P<0.001 and P= 0.023, respectively). Given the anatomical complexity of the mesiobuccal root and the frequent presence of the MB2 canal, the clinician must assume the existence of two canals in this root. CBCT scanning is a good way to initially identify this canal in the different root thirds.

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Section: Discussioncontrasting

confidence: 97%

Assessment of Mesial Root Morphology and Frequency of MB2 Canals in Maxillary Molars using Cone Beam Computed Tomography

Abarca

Gómez²,

Zaror

et al. 2015

Int. J. Morphol.

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“…Esto además es apoyado por lo que observamos en relación a los itsmos, ya que en un 60% de las secciones no se registró su presencia, correspondientes a raíces MB con canal único. La observación microscópica coincide con lo observado por Reis et al (2013) mediante CBCT, donde los canales MB2 son menos frecuentes en los tercios medio y apical que en el tercio coronal.…”

Section: Discussionunclassified

Evaluación de la Frecuencia, Ubicación y Tipos De Itsmos en Raíces Mesiobucales de Primeros Molares Maxilares: Un Estudio ex vivo

Matus

Cantín

2016

Int. J. Morphol.

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CANTÍN, M. Evaluación de la frecuencia, ubicación y tipos itsmos en raíces mesiobucales de primeros molares maxilares. Un estudio ex vivo. Int. J. Morphol.,34(2):804-810, 2016. RESUMEN:El objetivo fue describir la configuración interna del sistema canalicular de la raíz mesiobucal (MB) del primer molar maxilar, identificando el número de canales junto a la frecuencia, ubicación y tipos de itsmo a 1, 3 y 5 mm del ápice. Esta investigación fue aprobado por el comité de ética. Se realizó un estudio descriptivo ex vivo de corte transversal. Molares extraídos fueron limpiados, desinfectados y fijados en formalina al 10 %. Se identificó la raíz MB y se obtuvieron cortes transversales (3) a 1, 3 y 5 mm desde apical a coronal, identificadas como secciones A, B y C. Ciento cincuenta secciones fueron teñidas con azul de metileno y observadas bajo microscopio óptico, tanto en la superficie apical como coronal, y analizadas mediante el programa ImageJ. Se obtuvieron estadísticas descriptivas (media ± DE), y mediante las prueba ANOVA y chi-cuadrado de Pearson se compararon las secciones a diferentes niveles. Se observaron un total de 445 canales radiculares, 289 correspondieron a canales accesorios. El 41,6 % fueron canales mesiobucales secundarios (MB2) y 5,1 % un tercer canal accesorio. Se observaron con mayor frecuencia istmos Tipo I (48), seguidos de Tipo IV (26); los Tipos II, III y V no superaron el 15 %. De acuerdo con la prueba de chi-cuadrado de Pearson, existen diferencias significativas entre los tipos istmos y distancia del ápice (p> 0,001). La incidencia del Tipo I fue mayor cerca del ápice, con un descenso hacia los 3,0 mm. Se observó una compleja morfología del sistema canalicular apical en la raíz MB, que explica su baja tasa de éxito cuando son tratados con endodoncia. Las variaciones anatómicas, tales como MB2 o más canales accesorios e istmos deben ser considerados en la planificación y realización del tratamiento de endodoncia convencional o cirugía apical, con el fin de lograr procedimientos más exitosos. Se recomienda que las apicectomías se extiendan por lo menos a 3,3 mm del ápice. INTRODUCCIÓNEl tratamiento de endodoncia tiene por objetivo la conformación, limpieza y obturación con un material de relleno inerte de todos los espacios de la cavidad dentinaria ocupada por el tejido pulpar (Cleghorn et al., 2006). Conocer la morfología de los canales radiculares y sus frecuentes variaciones, es un requisito básico para el tratamiento endodóntico. En general se acepta que la mayor causa de fracaso en el tratamiento endodóntico es la incapacidad de reconocer y, por tanto, tratar adecuadamente todos los canales del sistema radicular (Verma & Love, 2010).Los primeros molares maxilares, en particular su raíz mesiobucal (MB), suelen ser tratados endodónticamente con una baja tasa de éxito (Imura et al., 1998). Estudios confirman la compleja morfología de la raíz MB, reportando diversas variaciones anatómicas (Al Shalabi et al., 2000) tales como dos canales en más del 50 % de los casos, itsmos o canales y fora...

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“…Bu konfigürasyon Tip II kanal konfigürasyonudur ve DB ve palatinal kökte bir kanal, MB kökte ise iki kanal olarak ortaya çık-maktadır. 4 Zheng ve ark. çoğu üçüncü büyük azı dişinin üç ayrı köke (%97,29) sahip olduğunu ortaya koymuştur.…”

Section: Discussionunclassified

“…[2][3][4][5][6][7][8][9][10][11][12] KIBT endodontik uygulamalarda ve dişlerin morfolojik analizlerinde üç farklı düzlemde görüntü elde ederek klinisyene büyük avantaj sağlamaktadır. Sagittal, koronal ve aksial KIBT görüntülerinin kombinasyonu anatomik yapıların süperpozisyonunu elimine eder.…”

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Investigation of the Root Canal Configuration of Maxillary Permanent First and Second Molars Using Cone-Beam Computed Tomography in a Turkish Population

Demirbuğa¹,

Büyük²,

Şekerci³

et al. 2015

Turkiye Klinikleri J Dental Sci

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Ö ÖZ ZE ET T A Am ma aç ç: : Bu çalışmanın amacı, üst birinci ve ikinci büyük azı dişlerinin kök kanal morfolojilerinin konik ışınlı bilgisayarlı tomografi (KIBT) ile incelenmesidir. G Ge er re eç ç v ve e Y Yö ön nt te em ml le er r: : Altı yüz beş hastanın üç boyutlu üst birinci (n=894) ve ikinci büyük azı dişleri (n=944) içeren KIBT görün-tüleri şu değerlendirmeleri yapmak üzere incelenmiştir. (i) Köklerin sayısı ve morfolojisi; (ii) Her bir kökteki kanal sayısı; (iii) Fazla kök kanallarının insidansı ile kanal konfigürasyonlarının tipi (Vertucci sınıflamasına göre) ve (iv) C-şekilli kanal sisteminin oranı. B Bu ul lg gu ul la ar r: : Hem üst birinci büyük azı (%93,6) ve üst ikinci büyük azı (%69,1) dişlerinde en sık üç ayrı kök morfolojisi sıklıkla gözlenmektedir. Tüm köklerde en sık gözlenen tip I kanal konfigürasyonudur. Meziobukkal (MB) kökler diğer köklerle kıyaslandığında, hem birinci hem de ikinci büyük azı dişlerde en fazla varyasyon gösteren kanal konfigürasyonlarına sahiptir (p<0,05). C-şekilli kanal sistemi ikinci büyük azı dişlerinde %0,52 olarak bulunmuştur. Ayrıca, birinci ve ikinci büyük azı dişlerinde fazladan kanal tipine rastlanmamıştır. İkinci meziobukkal kanal (MB2) insidansı (birinci ve ikinci büyük azı diş-leri için; kadınlarda %39,3 ve erkeklerde %43,3) cinsiyetler arasında istatistiksel olarak farklılık göstermiştir (p<0,05). S So on nu uç ç: : Üst büyük azı dişlerindeki MB kökler distobukkal veya palatinal kök-lerden daha fazla kanal varyasyonlarına eğilim göstermektedir ve MB2 insidansı üst birinci büyük azı dişlerinde üst ikinci büyük azı dişlerinden daha yüksek orana sahiptir. Bu veriler başarılı endodontik tedaviyi kolaylaştırmaktadır.A An na ah ht ta ar r K Ke el li im me el le er r: : Konik ışınlı bilgisayarlı tomografi; kök kanal tedavisi A AB BS ST TR RA AC CT T O Ob bj je ec ct ti iv ve e: : The aim of this study is to investigate the root canal morphology of maxillary first and second molars using cone beam computed tomography (CBCT) in a Turkish subpopulation. M Ma at te er ri ia al l a an nd d M Me et th ho od ds s: : The three-dimensional CBCT images of maxillary first (n=894) and second molar (n=944) teeth from 605 Turkish patients were analyzed to make the following observations: (i) the number of roots and their morphology; (ii) the number of canals per root; (iii) the incidence of accessory root canals, the types of canal configurations (according to Vertucci's classification), and (iv) the frequency of C-shaped canal system. R Re es su ul lt ts s: : The most common root morphology was that of three separate roots in both first (93.6%) and second molars (69.1%). While, type 1 canal configuration was the most frequent in all roots. The mesiobuccal roots (MBRs) had significantly more variations in canal configuration when compared with other roots in both the first and second molars (p<0,05). C-shaped canal system were found as 0.52% in second molars. And so, no additional canal types were identified in the first and second molars. The incidence of a second mesiobuccal ...

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Second Canal in Mesiobuccal Root of Maxillary Molars Is Correlated with Root Third and Patient Age: A Cone-beam Computed Tomographic Study

Cited by 98 publications

References 20 publications

Assessment of Mesial Root Morphology and Frequency of MB2 Canals in Maxillary Molars using Cone Beam Computed Tomography

Assessment of Mesial Root Morphology and Frequency of MB2 Canals in Maxillary Molars using Cone Beam Computed Tomography

Evaluación de la Frecuencia, Ubicación y Tipos De Itsmos en Raíces Mesiobucales de Primeros Molares Maxilares: Un Estudio ex vivo

Investigation of the Root Canal Configuration of Maxillary Permanent First and Second Molars Using Cone-Beam Computed Tomography in a Turkish Population

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