Prevalence of middle mesial canals and Isthmi in mandibular molars in a subpopulation of Andhra Pradesh: an in vivo investigation using CBCT

Sajjan, Girija S; Rajashekar, Ch; Varma, K Madhu; R, Kalyan Satish; Rishitha, T; Gadicherla, Srikanth

doi:10.37983/ijdm.2021.3102

Cited by 3 publications

(7 citation statements)

References 30 publications

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“…Two studies were excluded because the studies did not include the MMC in mesial root configuration ( Pawar et al, 2017 , Zhang et al, 2015 ), four studies were excluded because they did not state the voxel size and the CBCT machine ( Al Shehadat et al, 2019 , Babu and Anjaneyulu, 2020 , Perlea et al, 2019 , Reddy et al, 2021 ), and one study was excluded because the voxel size used in the study was more than 400 µm ( Tredoux et al, 2021 ). Finally, 28 studies were included in the meta-analysis ( Abarca et al, 2020 , Akbarzadeh et al, 2017 , Aldosimani et al, 2021 , Arayasantiparb et al, 2017 , Bhatti et al, 2022 , Demirbuga et al, 2013 , Hasheminia et al, 2021 , Hosseini et al, 2020 , Hu et al, 2019 , Inaty et al, 2020 , Kantilieraki, 2019 , Kuzekanani et al, 2020 , Ni et al, 2018 , Nur et al, 2014 , Palottil et al, 2021 , Pan et al, 2019 , Qiao et al, 2020 , Rehman et al, 2020 , Roshdy and El Khodary, 2018 , Sajjan et al, 2021 , Senthil and Solete, 2021 , Shah and Khan, 2019 , Shakeri et al, 2019 , Srivastava et al, 2018 , Tahmasbi et al, 2017 , Torres et al, 2015 , Xu et al, 2020 , Yang et al, 2020 ). The main features of the included studies are summarized in Table 1 .…”

Section: Resultsmentioning

confidence: 99%

“…This result was consistent with a previous study that reported a prevalence of 4.8% of MMC in mandibular first molars ( Rehman et al, 2020 ). Additionally, another study showed a 4.5% MMC prevalence in mandibular first molars ( Sajjan et al, 2021 ). In contrast, a higher prevalence of MMC in mandibular first molars was reported by several studies to vary from 10.8% to 59% ( Akbarzadeh et al, 2017 , Bhatti et al, 2022 , Hu et al, 2019 , Inaty et al, 2020 , Roshdy and El Khodary, 2018 , Senthil and Solete, 2021 , Srivastava et al, 2018 ).…”

Section: Discussionmentioning

confidence: 96%

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Prevalence of middle mesial canal using cone beam computed tomography: A systematic review and meta-analysis

Bukhary,

Alkahtany,

Bukhari

et al. 2023

The Saudi Dental Journal

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 96%

Prevalence of middle mesial canal using cone beam computed tomography: A systematic review and meta-analysis

Bukhary,

Alkahtany,

Bukhari

et al. 2023

The Saudi Dental Journal

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“…In Indian population, a CBCT study reported type I isthmus was present in 38.67% of mesial root and 12.33% of distal root of mandibular rst molars [39]. Another similar study on the same population reported isthmus prevalence rates of 30.34% in coronal, 15% in middle, and 4% in apical third of mesial root of mandibular molars, respectively, without classifying the isthmus types [40]. A Study using clearing technique, reported type I ranging from 3 to 18% in mesial and distal roots of mandibular molars [13], while another micro-CT study showed prevalence rate of 52.9% in mesial root of mandibular molars [11].…”

Section: Discussionmentioning

confidence: 97%

Prevalence and Morphological Analysis of Isthmuses in Mandibular Molars of Indian Population: A Micro-Computed Tomographic Study

Lavanya

Tewari

Ali

et al. 2023

Preprint

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Objectives This study evaluated the prevalence, configurations, and correlation of isthmuses at coronal, middle, and apical root thirds in mandibular molars of the Indian population using micro-computed tomography. Materials & Methods 105 permanent mandibular molar teeth were scanned under micro-CT. The axial sections were analyzed at the coronal, middle, and apical thirds of the root for isthmus types and classified according to Hsu and Kim's classification. Descriptive statistics for each isthmus type were calculated. The correlations between the apical, middle, and coronal thirds of the root were determined using Pearson's correlation coefficient. Results Type IV isthmus was most common in the coronal third of mesial root of mandibular first molar (42.9%), while type V was prevalent in coronal third of mesial root of second molar (42.9%). Type I isthmus was found to be highly prevalent in the middle third (71.4%) and apical third (61.9%) of mesial roots of first molars, and in the middle third (71.4%) and apical third (42.9%) of mesial roots of second molars. Type V isthmus was the most prevalent in all the thirds of the distal roots of both first and second molars, ranging from 40–50%. Also, a strong correlation of 0.965 (P < 0.01) was found between the isthmuses in the apical and middle thirds of roots. Conclusion There are variations in the prevalence and type of isthmuses across different sections of the root, including the presence of atypical isthmuses. Micro-CT with high-resolution imaging and 3D reconstruction is crucial for investigating root canal morphology. Clinicians could benefit from considering demographic characteristics to better predict the presence of isthmus variations. Clinical relevance: The isthmus configurations and frequency differs at each section of mandibular teeth.

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“…In the groove within both of the main canals, the middle canal orifice can be found beneath a dentinal projection. When a single root extension is unable to close itself off and forms a constriction, an isthmus is formed [ 17 ]. The dentin layer in this groove is paler in color than the dentin surrounding it.…”

Section: Discussionmentioning

confidence: 99%

“…Based on a previous study [ 17 ], sample calculation was performed using 95% confidence intervals as N = [Z(1- α/2)]^2 *P*Q/(D)^2, α: Type I Error at 5% level of significance (l.o.s.) = 1.96, β: Type II Error at 20% (1-β) = 0.8, Estimated Proportion (P) =4.5%=4.5, Estimation of Error (D) = 4%, N = 1.96 * 0.045*(0.955)/(0.05)2=104.…”

Section: Methodsmentioning

confidence: 99%

Unveiling Hidden Canals: Middle Mesial Canal Prevalence in Mandibular First Molars Using Cone-Beam Computed Tomography Analysis in Central India

Singi,

Ikhar,

Sibal

et al. 2023

Cureus

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Background The most frequent reason involving failure of root canal treatment in molar teeth is the inability to locate additional canals. While much research has been conducted on the morphology of mandibular molars, little is known about isthmuses and middle mesial (MM) canals in the Indian population. The primary aim of the present research was to determine the prevalence of MM canals and isthmuses of mandibular first molars in the Central India population using cone-beam computed tomography (CBCT) images. Methodology CBCT of 140 mandibular first molar teeth was analyzed from the institutional database images in the coronal, sagittal, and axial planes. Data concerning the number of root canals, the presence of middle mesial canals, and the presence of isthmus were noted. Information collected was transferred into an Excel sheet and analyzed using the Statistical Package for Social Sciences (IBM Corp., Armonk, NY, USA). Results Eight images (5.71%) revealed the presence of middle mesial canals with no statistically significant occurrence. The incidence of isthmi in the mandibular first molar was 84.3%, and the presence of isthmi in the coronal third was about 38.6%. This showed a considerable presence. Conclusion There is incidence of the middle mesial canal, which emphasizes the need to locate extra canals in patients undergoing root canal endodontic treatment. The implementation of CBCT will help identify the extra canal before the treatment. This will help ultimately in providing better patient care.

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Prevalence of middle mesial canals and Isthmi in mandibular molars in a subpopulation of Andhra Pradesh: an in vivo investigation using CBCT

Cited by 3 publications

References 30 publications

Prevalence of middle mesial canal using cone beam computed tomography: A systematic review and meta-analysis

Prevalence of middle mesial canal using cone beam computed tomography: A systematic review and meta-analysis

Prevalence and Morphological Analysis of Isthmuses in Mandibular Molars of Indian Population: A Micro-Computed Tomographic Study

Unveiling Hidden Canals: Middle Mesial Canal Prevalence in Mandibular First Molars Using Cone-Beam Computed Tomography Analysis in Central India

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