Evaluation by dental cone-beam computed tomography of the incidence and sites of branches of the inferior dental canal that supply mandibular third molars

Ogawa, Atsushi; Fukuta, Yoshiyasu; Nakasato, Hiroshi; Nakasato, Shigeki

doi:10.1016/j.bjoms.2016.08.007

Cited by 20 publications

(14 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The frequency of the RMF described in human dry mandible studies is between 3.2% [ 9 ] and 72% [ 5 ]. The diameter of the RMF in the specimen reported herein falls within the lower limit of the range described in the literature of between 0.2 mm [ 10 ] and 3.29 mm [ 4 ]. Consistent with the findings of Haas [ 7 ], the RMF with a diameter greater than 1 mm was in a more anterior position.…”

Section: Discussionsupporting

confidence: 72%

First Report of Tripled Retromolar Foramina

Iwanaga

Truong

et al. 2017

Cureus

View full text Add to dashboard Cite

The retromolar foramen (RMF) is the bony entrance of the retromolar canal, through which a neurovascular bundle runs. It is essential to locate such anatomic variants in a patient in order to avoid complications in surgery, implant placement, or anesthesia of the area. To our knowledge, there has only been one case report of supernumerary RMF, which reported one bilateral doubled retromolar foramina and one doubled left RMF. We present an extremely rare case in which a right triple RMF was observed on cone beam computed tomography in a cadaver. Diameters of the RMF were 0.8 mm, 1.0 mm and 1.1 mm, respectively. Distances from the distal edge of the third molar were measured as 4.0 mm, 3.6 mm, and 0.5 mm, respectively. RMF was not found on the left side of the mandible.

show abstract

Section: Discussionsupporting

confidence: 72%

First Report of Tripled Retromolar Foramina

Iwanaga

Truong

et al. 2017

Cureus

View full text Add to dashboard Cite

show abstract

“…Regarding linear measurements, the present study found the distance between the RMF and the distal surface of the second molar to be 14.70 ± 5.07, which was comparable to the results of Han et al who found the distance to be 14.08 ± 3.85, von Arx et al who found the distance to be 15.16 ± 2.39 mm, and Park et al who found the distance to be 12.1 ± 3.3 mm [14,15,21]. Park et al and Ogawa et al found the distance between the RMF and the third molar to be 5.8 ± 3.6 mm and 5.5 ± 2.1, respectively, which are not much different from our findings of 4.26 ± 4.21 mm [15,42].…”

Section: Discussioncontrasting

confidence: 67%

Incidence of retromolar canal in Egyptian population using CBCT: a retrospective study

Badry

El-Badawy

Hamed

2020

Egypt J Radiol Nucl Med

View full text Add to dashboard Cite

Background: Many studies have been done to investigate the incidence and the course of the retromolar canal (RMC) in different populations either osseous studies using cadavers or dry mandibles, panoramic studies, or cone beam computed tomography (CBCT) studies. The location of the RMC is in the retromolar area distal to the third mandibular molar. The retromolar area is considered an imperative site where many dental surgeries are being held. The aim of this study is to determine the incidence of RMC in the Egyptian population using CBCT and measure the distance between the RMF and neighboring anatomical landmarks to better allocate the RMC and RMF and avoid the complications. Two hundred and fourteen CBCT scans were examined to detect the presence of RMC. Their course was classified to 3 main types A, B, and C, and linear measurements were done from the retromolar foramen (RMF) to the 2nd and 3rd molars in anteroposterior direction and from the RMF to the mandibular foramen (MF) in anteroposterior and mediolateral directions. Results: The RMC was present in 24 scans from the 214 with 11.2% incidence rate. The most common type was found to be type A, and type C was the rarest. The RMC has no significant difference between males and females, unilateral and bilateral distribution, and right and left sides. The linear measurements from the RMF to the 2nd and 3rd molars are 14.70 ± 5.07 mm and 4.26 ± 4.21 mm, respectively, and from the RMF to the MF in anteroposterior and mediolateral directions are 15.69 ± 3.43 mm and 2.62 ± 1.60 mm, respectively. Conclusions: The incidence rate of RMC in Egyptian population represents 11.2%. The use of CBCT is quite important in the evaluation of the retromolar area to visualize the presence of the RMC or RMF and avoid the complications occurring due to different dental surgical procedures performed in the aforementioned site.

show abstract

“…Panoramic radiography (%) *CT/ ǂ CBCT (%) Nortje, Farman, and de V Joubert (1977) and Nortje, Farman, and Grotepass (1977 Kang et al, 2014;Kuribayashi et al, 2010;Li et al, 2017;Luangchana et al, 2019;Naitoh et al, 2009;Neves et al, 2014;Ogawa et al, 2016;Okumu & Dumlu, 2019;Orhan et al, 2011;Orhan et al, 2013;Rashsuren et al, 2014;Shah et al, 2018;Sonneveld et al, 2018;Villa et al, 2016;Yang et al, 2017;Yi et al, 2015;Yoon et al, 2018;Zhang et al, 2018), and two have used only CT (Fu et al, 2014;Lins et al, 2015). These CT and CBCT studies reported a higher prevalence of BMC, in the range 0.05 to 69.0% (Table 1).…”

Section: Dry Mandible/mri (%)mentioning

confidence: 99%

The clinical anatomy of accessory mandibular canal in dentistry

Ngeow

Chai

2020

Clinical Anatomy

View full text Add to dashboard Cite

The mandibular canal is a conduit that allows the inferior alveolar neurovascular bundle to transverse the mandible to supply the dentition, jawbone and soft tissue around the gingiva and the lower lip. It is not a single canal but an anatomical structure with multiple branches and variations. The branches are termed accessory, bifid or trifid canals depending on their number and configuration. A bifid mandibular canal is an anatomical variation reported more commonly than the trifid variant. Because of these variations, it is of the utmost importance to determine the exact location of the mandibular canal and to identify any branches arising from it prior to performing surgery in the mandible. This article reviews the prevalence, classification and morphometric measurements of these accessory mandibular canals, emphasizing their clinical significance.

show abstract

Evaluation by dental cone-beam computed tomography of the incidence and sites of branches of the inferior dental canal that supply mandibular third molars

Cited by 20 publications

References 13 publications

First Report of Tripled Retromolar Foramina

First Report of Tripled Retromolar Foramina

Incidence of retromolar canal in Egyptian population using CBCT: a retrospective study

The clinical anatomy of accessory mandibular canal in dentistry

Contact Info

Product

Resources

About