Four-Rooted Mandibular First Molar with an Unusual Developmental Root Fusion Line: A Case Report

Kottoor, Jojo; Albuquerque, Denzil Valerian; Velmurugan, Natanasabapathy; Mylswamy, Sumitha

doi:10.1155/2012/237302

Cited by 7 publications

(5 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The prevalence of these radix entomolaris is different in different population. It is observed up to 3% in African population, 5% to 30% in Mongoloid population [5]. In Eurasian and Indian population it is less than 5% [6].…”

mentioning

confidence: 94%

See 1 more Smart Citation

Walking 6 Year Molar

Rao¹

2015

Dentistry

View full text Add to dashboard Cite

The intension of this letter is to intensify the complexity of anatomical variation of mandibular first molars. Complete knowledge about the root and canal morphology and also their morphological variations will help the dentist in planning the treatment and improving the better prognosis. Careful examination of the pre-operative radiographs will help to decrease the failure rates of root canal therapy.

show abstract

mentioning

confidence: 94%

“…These additional extra roots are first mentioned in literature by Carabelli. These extra distolingual roots are called as radix entomolaris [5]. The prevalence of these radix entomolaris is different in different population.…”

mentioning

confidence: 99%

Walking 6 Year Molar

Rao¹

2015

Dentistry

View full text Add to dashboard Cite

show abstract

“…Amongst all human teeth, the mandibular first molar is often affected by caries and usually requires root canal treatment, even at an early age [ 8 ]. Variation in the number of roots, which ranges from one [ 9 ] to four [ 10 ], and in the morphology of the root, such as proximal grooves [ 11 ], are common anatomical variations in mandibular first molars. The occurrence of a distolingual (radix entomolaris) or mesiobuccal (radix paramolaris) supernumerary root was not uncommon in this tooth type and found to be closely associated with many ethnicities, such as Mongoloid, Brazilian, and Chinese [ 12 – 14 ].…”

Section: Introductionmentioning

confidence: 99%

Root and canal anatomy of mandibular first molars using micro-computed tomography: a systematic review

et al. 2023

View full text Add to dashboard Cite

Background A thorough understanding of root and canal anatomy is crucial for successful root canal treatment outcomes. This systematic review aims to explore the published micro-CT studies investigated the anatomy of root and canal system in permanent mandibular first molars. Method An electronic search was performed on Web of science, PubMed, and Scopus. Micro-CT journal studies investigated the root and canal anatomy of permanent double-rooted mandibular first molars were included. Data on study characteristics, objectives of interest, specifications of the studies, and micro-CT specifications were extracted. Risk of bias assessment (ROB) of the included studies was performed using Anatomical Quality Assessment (AQUA) tool. The extracted data were presented in tables and figures to present and synthesise the results. A meta-analysis was performed for the studies related to the prevalence of Vertucci's canal configurations, middle mesial canal (MMC) configurations, and Fan's isthmus types. Results Amongst 1358 identified studies, thirty met the inclusion criteria. In terms of the objectives, the selected studies showed high anatomical variability in mandibular first molars. Twenty-two (73%), 25 (83%), and 12 (40%) of the studies reported the population/ethnicity, micro-CT specifications, and ethical approval, respectively. 28 (93%) studies did not disclose the method of sample size estimation. In only 6 (20%) of the studies, the authors had calibrated the assessment approaches. Mostly, a potential ROB was reported in domain 1 (objective(s) and subject characteristics) and domain 3 (methodology characterization). Whilst, low risk was reported in domains 2 (study design), 4 (descriptive anatomy), and 5 (reporting of results). The overall ROB was reported to be ''moderate'' in the vast majority of the studies (27/30). Meta-analysis results showed high levels of heterogeneity among the studies related to MMCs (I2 = 86%) and Fan's isthmus (I2 = 87%). As for the root canal configuration, pooled prevalence showed that Vertucci type IV and type I were the most prevalent in mesial and distal root canals, respectively. Conclusion Based on moderate risk of bias level of evidence, micro-CT studies have shown wide range of qualitative and quantitative data presentations of the roots and canals in mandibular first molars. Protocol and registration. The protocol of this systematic review was prospectively registered in the Open Science Framework database (https://osf.io) on 2022–06-20 with the registration number 10.17605/OSF.IO/EZP7K.

show abstract

“…Amongst all human teeth, the mandibular first molar is often affected by caries and usually requires root canal treatment, even at an early age (7). Variations in the number of roots, which ranges from one (8) to four (9), and in the morphology of the root, such as deep proximal grooves (10), are common anatomical variations in mandibular first molars. Other root canal features include the presence of accessory/lateral canals, apical delta, isthmuses, and intercanal connections, and the wide range of variations in the root apex anatomy such as bifid roots and different locations of the major and minor apical foramina (11).…”

Section: Introductionmentioning

confidence: 99%

Root and canal anatomy of mandibular first molars using micro-computed tomography: A systematic review

AL-Rammahi

Chai

Nabhan

et al. 2023

Preprint

View full text Add to dashboard Cite

Background A thorough understanding of root and canal anatomy is crucial for successful root canal treatment outcomes. This systematic review aims to explore the published micro-CT based literature about the anatomy of root and canal system in permanent mandibular first molars. Method An electronic search was performed on Web of science, PubMed, and Scopus. Published micro-CT journal articles in English that present the root and canal anatomy of permanent 2-rooted mandibular first molars were included. Data on study characteristics, objectives of interest, specifications of the studies, and micro-CT specifications were extracted following the PRISMA statement guidelines. Risk of bias assessment of the included studies was performed using Anatomical Quality Assessment (AQUA) tool. The extracted data were presented in tables or figures to present and synthesise the results. A meta-analysis was performed for the studies related to the prevalence of Vertucci's canal configurations, middle mesial canal (MMC) configurations, and Fan's isthmus types. Results Amongst 1358 identified studies, thirty met the inclusion criteria. In terms of the objectives, the selected studies showed high anatomical variability in mandibular first molars. Twenty-two (73%), 25 (83%), and 12 (40%) of the studies reported the population/ethnicity, micro-CT specifications, and ethical approval, respectively. 28 (93%) studies did not disclose the method of sample size estimation. In only 6 (20%) of the studies, the authors had calibrated the assessment approaches. Mostly, a potential risk of bias was reported in domain 1 (objective(s) and subject characteristics) and domain 3 (methodology characterization). Whilst, low risk was reported in domains 2 (study design), 4 (descriptive anatomy), and 5 (reporting of results). Meta-analysis results showed high levels of heterogeneity among the studies related to MMCs (I2 = 86%) and Fan's isthmus (I2 = 87%). As for the root canal configuration, pooled prevalence showed that Vertucci type IV and type I were the most prevalent in mesial and distal root canals, respectively. Conclusion There is a considerable heterogeneity in the methodological procedures used to study root canal anatomy in micro-CT studies, however, all involved studies showed that the root canal anatomy of the permanent mandibular first molar is highly variable. Protocol and registration The protocol of this systematic review was prospectively registered in the Open Science Framework database (https://osf.io) on 2022-06-20 with the registration number 10.17605/OSF.IO/EZP7K.

show abstract

Four-Rooted Mandibular First Molar with an Unusual Developmental Root Fusion Line: A Case Report

Cited by 7 publications

References 19 publications

Walking 6 Year Molar

Walking 6 Year Molar

Root and canal anatomy of mandibular first molars using micro-computed tomography: a systematic review

Root and canal anatomy of mandibular first molars using micro-computed tomography: A systematic review

Contact Info

Product

Resources

About