Haemorrhage following coronectomy of an impacted third molar associated with a bifid mandibular canal: a case report and review of the literature

Linares, C. Verea; Mohindra, A.; Evans, Martin

doi:10.1111/ors.12206

Cited by 5 publications

(4 citation statements)

References 12 publications

(18 reference statements)

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“…After CBCT imaging, it was confirmed that the implants interfered with bifid canals and a significant reduction in pain was noted following the removal of the implants. A severe hemorrhagic complication related to the presence of a bifid canal was reported by Verea linares et al [ 43 ]. A partially erupted third molar, closely associated with a bifid canal, was treated with coronectomy.…”

Section: Discussionmentioning

confidence: 99%

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Prevalence and Characteristics of Accessory Mandibular Canals: A Cone-Beam Computed Tomography Study in a European Adult Population

et al. 2022

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The purpose of this observational study is to evaluate the prevalence and main characteristics of bifid canals within a European adult population, analyzing cone-beam-computed tomography (CBCT). The population study examined 300 subjects. The CBCTs were performed between 2012 and 2019, using PaX-Zenith3D with a standard protocol of acquisition. The parameters analyzed were the presence and lengths of the bifid mandibular canals. The sample included 49% male and 51% female participants. The mean age of the patients was 47.07 ± 17.7 years. Anatomical variants of the mandibular canal were identified in 28.8% of the sides and 50.3% of the patients. In 7.3% of the subjects, the anatomical variants were present bilaterally. The most frequently encountered bifid canal was Type 3 (40.5%), followed by the Type 1 canal (39.3%), the Type 2 canal (14.5%), and the Type 4 canal (5.9%), 40% on the right side and 60% on the left side. The average length of the bifid canals located on the right side of the mandible was 11.96 ± 5.57 mm, compared to 11.38 ± 4.89 mm for those measured on the left side. The bifid mandibular canal is a common anatomical variation of the mandibular canal. It is fundamental to performing an accurate preoperative evaluation using CBCT analysis to avoid and/or reduce intraoperative and postoperative complications.

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Section: Discussionmentioning

confidence: 99%

“…The authors suggested performing a CBCT for appropriate surgical planning in a suspected bifid canal. Furthermore, they recommended complete removal of the tooth rather than coronectomy to allow direct access to the source of bleeding [ 43 ].…”

Section: Discussionmentioning

confidence: 99%

Prevalence and Characteristics of Accessory Mandibular Canals: A Cone-Beam Computed Tomography Study in a European Adult Population

et al. 2022

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“…Therefore, these roots must be extracted immediately in order to limit an infectious complication as confirmed in the study by Pogrel MA [12] . Also, the lesion of the inferior alveolar nerve, the lingual nerve are represented as very rare complications that can occur [20] , [26] , [27] , [28] , without forgetting the risk of developing alveolitis or abscess postoperatively [30] .…”

Section: Discussionmentioning

confidence: 99%

Coronectomy of mandibular wisdom teeth: A case series

Hallab

Samir

Marouane

et al. 2022

International Journal of Surgery Case Reports

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Introduction and importance Coronectomy represents a common procedure performed in oral surgery, mostly involving the lower wisdom teeth when the extraction presents a risk of injury to the inferior alveolar nerve (NAI). The surgical approach can be described as a coronal separation of the tooth and leaving the roots intact in the socket. The result is impressive with the disappearance of the symptomatology at first and especially the root migration, which occurs most frequently in the first 6 months. Cases series presentation We present a series of clinical cases of coronectomy involving the lower wisdom tooth which was performed by respecting the preoperative, perioperative, and postoperative measures and whose indications were established correctly. Discussion and conclusion Besides the previously mentioned indication, this procedure can be associated with other clinical situations such as dentigerous cysts. However, there are several circumstances in which coronectomy is contraindicated. According to our study, we can conclude that coronectomy of mandibular wisdom teeth represents a reassuring alternative to the preservation of NAI. Complications may occur but follow-up remains a key point in visualizing the progression of the roots away from the mandibular canal.

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“…Due to the neurovascular content, the BMC poses a risk for the patient as well as a challenge to the clinician. Several case reports have described intra-or postoperative complications related to damage of the BMC (Maqbool et al 2013;Aljunid et al 2016;Verea Linares et al 2016).…”

Section: Introductionmentioning

confidence: 99%

The bifid mandibular canal in three-dimensional radiography: morphologic and quantitative characteristics

Von Arx,

Bornstein

2021

Swiss Dent. J. SSO

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The mandibular canal is a prominent anatomical structure and it is of great clinical importance since it contains the inferior alveolar nerve. The clinician is advised to proceed cautiously in the vicinity of the mandibular canal to avoid any damage to its neurovascular content. Based on observations in dry mandibles, in panoramic radiographs, and recently in three-dimensional radiography, various anatomical variations of the mandibular canals have been described. One such variant is the so-called bifid mandibular canal (BMC). Embryologically, multiple canals develop and subsequently fuse to form a single mandibular canal; however, occasionally fusion fails or is incomplete resulting in one or multiple BMCs. Clinically relevant issues with regard to the BMCs include hemorrhagic or neurological disorders following damage to these aberrant canals. This literature review presents morphological and quantitative data about BMCs from studies using three-dimensional radiography, i.e. CT and/or CBCT. The reported frequencies of BMCs per patient ranged from 9.8 - 66.5% and per mandibular side from 7.7 - 46.5%. Gender, age or side predilection is currently inconclusive with regard to the occurrence of BMCs. Various types of BMCs have been described in the literature, such as retromolar, dental, forward, or buccolingual canals. BMCs may originate from the mandibular canal along its entire course, but bifurcation appears to be more frequent in the posterior compared to the anterior canal portions. Mean BMC length was reported to range from 10.2 - 16.9 mm, and mean BMC diameter from 0.9 - 2.3 mm. In conclusion, the presence of a BMC must be taken into consideration for treatment planning and anesthetic, endodontic, or surgical interventions in the mandible.

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Haemorrhage following coronectomy of an impacted third molar associated with a bifid mandibular canal: a case report and review of the literature

Cited by 5 publications

References 12 publications

Prevalence and Characteristics of Accessory Mandibular Canals: A Cone-Beam Computed Tomography Study in a European Adult Population

Prevalence and Characteristics of Accessory Mandibular Canals: A Cone-Beam Computed Tomography Study in a European Adult Population

Coronectomy of mandibular wisdom teeth: A case series

The bifid mandibular canal in three-dimensional radiography: morphologic and quantitative characteristics

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