The Study of Inferior Alveolar Canal at the Lower Third Molar Apical Region With Cone Beam Computed Tomography

Abstract

Background The aim of this study was to determine the distance between the impacted mandibular third molar (IMTM) and the inferior alveolar canal (IAC) at different reference points through panoramic radiographs and cone beam computed tomography (CBCT). Methods A total of 45 male and 45 female patients with bilateral IMTM at a mean age of 27 years were recruited for this study. With the aid of panaromic radiographs and CBCT, the mandible width, the buccal bone width, IAC width, the lingual bone width, IAC height, the alveolar bone height, and the distance from the lowest part of the IMTM to the superior border of the canal were measured. Statistical analysis was done with independent samples t -test and Mann-Whitney U test for finding the difference between genders. Paired t -test and Wilcoxon signed-rank test were used for comparing both sides at P value = 0.05. Results The mandible width, IAC width, and IAC height were different between male and female patients. The IMTM roots displayed intimate contact with the IAC in 96.67% of the cases. The location of the IAC was mostly lingual in both genders. The diameter of the IAC was significant larger in men compared to in the women in terms of width and height. Conclusions This study is useful for the dental surgeon to avoid or prevent postoperative numbness or pain, because the awareness of the common location of the IAC and its approximation with the IMTM roots could allow a more cautious and precise approach during IMTM intervention.

Relación anatómica del conducto alveolar inferior con respecto a los terceros molares clase II mediante la técnica Cone-Beam

“…La deformación del CAI se presentó en la mayoría de las muestras en sentido vestíbulolingual con una distancia con el punto más cercano a la raíz de 0 mm. tercios de la raíz de los terceros molares mandibulares, se encuentra en el tercio apical en un mayor porcentaje (77%), muy parecido a lo reflejado por algunos estudios, 10,24,26 donde la mayoría de los terceros molares tenían un contacto estrecho con el CAI, concordando con Gu y colaboradores 12 donde 88.1% de la muestra de estudio presentó una estrecha relación del conducto con los terceros molares a nivel del tercio apical de la raíz y en el estudio de Rytkonen y Venta 27 donde se reafirma que los pacientes jóvenes tienen mayor tendencia a tener una relación cercana entre sus terceros molares y el CAI.…”

“…A su vez, se pudo determinar que, sí existe desplazamiento de esta estructura anatómica y el mismo es hacia lingual en la mayoría de los casos, coincidiendo con algunas investigaciones 3,12,26,28 las cuales mencionan que el conducto recorre la mandíbula mayormente hacia la tabla ósea lingual.…”

Mandibular canal vs. inferior alveolar canal: Evidence‐based terminology analysis

“…The most recent, consecutive 50 articles containing “inferior alveolar canal” or “inferior alveolar nerve canal” were included (defined as the IAC/IANC group) (Adibi, Shahidi, Nikanjam, Paknahad, & Ranjbar, 2017; Afsa & Rahmati, 2017; Al‐Ekrish et al, 2018; Al‐Ekrish et al, 2020; Ali, Mosleh, & Shawky, 2018; Aljarbou, Aldosimani, Althumairy, Alhezam, & Aldawsari, 2019; Arbel et al, 2019; Atef & Mounir, 2018; Česaitienė, Česaitis, Junevičius, & Venskutonis, 2017; Y. Chen, Liu, Pei, Liu, & Pan, 2018; Clark, Barbu, Lorean, Mijiritsky, & Levin, 2017; Demirel & Akbulut, 2020; Dutra et al, 2019; Elkhateeb & Awad, 2018; Ghai & Choudhury, 2018; Goller Bulut & Köse, 2018; Gumusok, Alkurt, Museyibov, & Ucok, 2016; He, Wang, Hu, & Liu, 2019; Ishii, Abe, Moro, Yokomizo, & Kobayashi, 2017; Kablan, Abu‐Sobeh, Lorean, & Levin, 2020; Khojastepour, Khaghaninejad, Hasanshahi, Forghani, & Ahrari, 2019; Kubota, Imai, Nakazawa, & Uzawa, 2020; S. Lee, Lee, Kim, & Nam, 2019; Liu, Sidell, Huon, & Torre, 2018; Luangchana, Pornprasertsuk‐Damrongsri, Kitisubkanchana, & Wongchuensoontorn, 2019; Mortazavi, Baharvand, & Rezaeifar, 2018; Mortazavi, Baharvand, Safi, & Behnaz, 2019; Mortazavi, Baharvand, Safi, Dalaie, et al, 2019; Patil, Pai, Vineetha, Rajagopal, & Dkhar, 2019; Patrick, Birur, Gurushanth, Raghavan, & Gurudath, 2017; Pour, Sedaghati, & Shamshiri, 2020; Prakash et al, 2018; Qi et al, 2019; Rytkönen & Ventä, 2018; Saha, Kedarnath, & Singh, 2019; Şahin, Odabaşı, Demiralp, Kurşun‐Çakmak, & Aliyev, 2019; Sharifi, Beshkar, Mobayeni, & Hasheminasab, 2018; Shokry et al, 2019; Sirin, Yildirimturk, Horasan, & Guven, 2020; Tabrizi et al, 2019; Tachinami, Tomihara, Fujiwara, Nakamori, & Noguchi, 2017; Tudtiam et al, 2019; Uchida, Motoyoshi, Namura, & Shimizu, 2017; Uzun, Sumer, & Sumer,…”

Avaliação morfológica do canal mandibular por meio da tomografia computadorizada de feixe cônico: um estudo de revisão

“…A TCFC é um aparelho extraoral capaz de criar uma imagem tridimensional, sem distorção, sem sobreposição de imagens e com muita nitidez (TUDTIAM et al, 2019). Portanto, para Vieira, Veloso e Lopes (2018), a utilização desse aparelho garantiria uma melhor visualização das estruturas anatômicas, sendo possível perceber detalhes como localização, morfologia e a relação com estruturas circunvizinhas.…”

“…Como a TFCF tem um perfil imaginológico tridimensional e de clareza de imagens permitindo um padrão de escolha e excelência para percepção das relações anatômicos de outras estruturas com o canal mandibular, subsidiando o cirurgião-dentista em diversos procedimentos (RIBEIRO et al, 2016). Assim, esse equipamento possui a capacidade de representar exatamente a posição do canal mandibular, bem como seus relacionamentos com estruturas circunvizinhas (TUDTIAM et al, 2019).…”