Assessment of root canal anatomy of maxillary and mandibular canine teeth: a cone-beam computed tomography study / Evaluación de la anatomía del canal radicular de caninos maxilares y mandibulares: un estudio de tomografía computarizada de haz cónico

Abstract To investigate the root canal anatomy of permanent maxillary and mandibular canines in a Turkish subpopulation using cone beam computed tomography (CBCT). Retrospective CBCT data of 300 patients admitted to our clinic between 2016 and 2018 were screened and evaluated. A total of 235 patients, 100 males and 135 females, aged 14-76 years (mean age 37.27±13.40) were included in this study. A total of 191 (44,8%) maxillary canine teeth and 235 (55,2%) mandibular canine teeth were examined. The number of roots and root canal morphology according to Vertucci's classification, the presence of accessory canals, and the position of the apical foramen of the root were analyzed. The effect of gender and age on the incidence of root canal morphology was also investigated. The majority of the teeth had a Type I canal configuration in both maxillary canines (100%) and mandibular canines (92,8%). In the mandibular canines the other canal patterns found were Type III (6,8%), and Type II (0,4%). Apical foramen was centrally positioned in the majority of the teeth, 70,2% and 66,8% in maxillary and mandibular canines, respectively. The occurrence of two roots in mandibular canines was 3,8% and the root canal separation was found 53,8% and 46,2% in the middle and cervical third of the root, respectively. No significant statistical difference was observed effect of gender and age on the incidence of the root canal morphology and the position of the apical foramen. Due to the diverse morphology and the potential presence of a second canal for canine teeth among the Turkish subpopulation, dentists should perform endodontic treatments with greater care. CBCT is an accurate tool for the morphological assessment of the root canals.

Resumen Investigar la anatomía del conducto radicular de los caninos maxilares y mandibulares permanentes en una subpoblación turca utilizando la tomografía computarizada de haz cónico (CBCT). Se examinaron y evaluaron los datos CBCT retrospectivos de 300 pacientes ingresados en nuestra clínica entre 2016 y 2018. Un total de 235 pacientes, 100 hombres y 135 mujeres, de entre 14 y 76 años (edad media de 37,27±13,40) fueron incluidos en este estudio. Se examinaron un total de 191 (44,8%) dientes caninos maxilares y 235 (55,2%) dientes caninos mandibulares. Se analizó el número de raíces y la morfología del conducto radicular según la clasificación de Vertucci, la presencia de conductos accesorios y la posición del foramen apical de la raíz. También se investigó el efecto del sexo y la edad en la incidencia de la morfología del conducto radicular. La mayoría de los dientes tenían una configuración de conductos de tipo I tanto en los caninos maxilares (100%) como en los caninos mandibulares (92,8%). En los caninos mandibulares los otros patrones de conductos encontrados fueron el Tipo III (6,8%) y el Tipo II (0,4%). El foramen apical estaba situado en posición central en la mayoría de los dientes, 70,2% y 66,8% en los caninos maxilares y mandibulares, respectivamente. La ocurrencia de dos raíces en los caninos mandibulares es del 3,8% y la separación del conducto radicular se encontró en el tercio medio y cervical de la raíz en el 53,8% y el 46,2%, respectivamente. No se observó ninguna diferencia estadística significativa en el efecto del sexo y la edad sobre la incidencia de la morfología del conducto radicular y la posición del foramen apical. Debido a la diversa morfología y a la posible presencia de un segundo conducto en los dientes caninos entre la subpoblación turca, los odontólogos deberían realizar los tratamientos endodónticos con mayor cuidado. La CBCT es una herramienta precisa para la evaluación morfológica de los conductos radiculares.

Mandibular Canine with Two Canals: A Case Report in Saudi Arabia

The Knowledge of the root canal morphology is essential for the success of the endodontic treatment. The most common anatomical configuration in mandibular canines is to have one root with one canal. However, previous studies reported 4.6% to 15% of the cases to have a second canal. In order to increase the knowledge about root canal morphology in the Saudi population, we reported a clinical case about successful endodontic management of mandibular canine with two joined canals (Vertucci type II) in Saudi females.

Transmigración de canino mandibular: etiología, manejo quirúrgico y consideraciones especiales / Mandibular canine transmigration: etiology, surgical management and special considerations

En raras ocasiones, el canino mandibular derecho o izquierdo se coloca en el lado opuesto al habitual. Esta perturbación se define como la transmigración. Existen diversas teorías de su etiología, así como factores que la condicionan. La transmigración mandibular es un término que no está descrito en la literatura contemporánea y son pocos los casos reportados a nivel mundial. Presentamos un caso de trasmigración de canino mandibular derecho, posicionado por debajo del agujero mentoniano de lado izquierdo, cerca del borde basal mandibular, el cual se extrajo bajo anestesia general. Presentamos la etiología, técnica quirúrgica y consideraciones especiales en casos de trasmigración de canino mandibular (AU)

In rare occasions right or left mandibular canine is positionated at opposed side of habitual. This disturbance is defined as transmigration. There exist diverse theories about its etiology as well as conditioning factors. Mandibular transmigration is a non described term in modern literature and there are only a few reported cases at world level. We present one case of right canine transmigration positionated intimately below of left side mentonian hole near of mandibular basal edge which it was extracted under general anesthesia. We present also the etiology, surgical technique and special considerations of mandibular canine transmigration cases (AU)

Non Surgical Management Of Intra Oral Sinus In Mandibular Canine With Two Canals And Mandibular First Premolar With Two Roots: A Case Report

The root canal morphology of teeth is more often highly complex and variable. Therefore, any attempt to perform successful endodontic treatment must be preceded with thorough and detailed knowledge of the root canal morphology and its possible variations.1 The majority of mandibular canines are single rooted with one root canal. The possibility of having two canals in mandibular canines is reported to be infrequent.2,3 Mandibular first premolars have also been typically described in literature as single–rooted with incidence of extra roots to be rarely present.4 This paper describes a case report on non surgical management of intra oral sinus with presence of two root canals in mandibular canine (Vertucci Type II) and two rooted mandibular first premolar (Vertucci Type IV) in same patient, which is a rare entity.

Sexual dimorphism using mandibular canine in establishing sex identity among Kashmiri population – A clinical study

Gender determination in forensic investigation is of immense medico legal importance especially in mass disaster. Teeth are excellent tools for identification as they are resistant to physical and chemical agents. The aim of the present study was to investigate gender dimorphism by measuring the linear dimensions of mandibular canine width and inter canine width among Kashmiri population. The study consists of 125 subjects selected from outpatient clinic of oral medicine and radiology, 64 were males and 61 were females. The age groups selected were in range from 18-24 years. There was statistically significant difference in canine width on right and left sides and inter canine distance between males and females (p value less than 0.05). These parameters can be helpful in determining the gender of the unknown deceased person in forensic investigations among Kashmiri population

Clinical report and literature review of right mandibular canine with two roots and two root canals / 口腔疾病防治

@#The mandibular canine usually has a single root with a single canal. It is rarely to see a mandibular canine with two roots and two toot canals. A case of a patient who has a right mandibular canine with two roots and two root canals was reported. Cone beam computed tomography (CBCT) comprehensively demonstrated the root canal system and especially provided the information of canal varieties and complex canal before operation. CBCT can improve the discovery rate of canal varieties, guide root canal treatment and prevent missed roots in tooth extraction.

Sensibilidad y Especificidad Clínica del Indice Mandibular Canino y del Ancho Mesiodistal del Diente Canino Para Estimar el Sexo: Ajuste de un Modelo Predictivo / Clinical Sensitivity and Specificity of Mandibular Canine Index and Mesiodistal Canine Width to Estimate Sex: Adjustment of a Predictive Model

Los dientes son un excelente material de investigación en personas vivas y cadáveres, en el ámbito antropológico, genético, odontológico y forense, por sus características (dureza, resistencia al ataque químico, fuego y descomposición). El diente canino mandibular es el menos afectado por enfermedad periodontal, menos extraído, más resistente a traumas severos y el que presenta mayor dimorfismo sexual. Se puede usar para la estimación de sexo, calculando el Índice Mandibular Canino (IMC). El propósito de este estudio es determinar la certeza del IMC en la estimación de sexo respecto al ancho mesiodistal del canino. El estudio fue realizado en 150 sujetos (H:M= 65:85), entre 18­24 años. El ancho mesiodistal del canino y la distancia canina fueron medidos en los modelos obtenidos y el IMC fue calculado. Se calculó la sensibilidad y especificidad para cada uno de los índices en cuestión. El IMC tuvo una sensibilidad del 33,85 % y una especificidad de 75,29 % en la estimación de sexo. El ancho mesiodistal del canino tuvo una sensibilidad de 66,15 % y una especificidad de 84,71 %. El ancho mesiodistal del canino tiene mayor sensibilidad y especificidad que el IMC en la estimación médicolegal de sexo.

Teeth are an excellent research material in living persons and in corpses, in the anthropological, genetic, dental and forensic fields, because of their characteristics (hardness, resistance to chemical attack, fire and decay). Mandibular canine teeth are the least affected by periodontal disease, the least extracted teeth, are more resistant to severe trauma and have a greater sexual dimorphism. They can be used for sex estimation, through the Mandibular Canine Index (MCI). The purpose of this study is to determine the accuracy of the MCI in sex estimation, compared to the mesiodistal canine width method. The study was conducted on 150 subjects (M:F= 65:85), aged 18­24. The mesiodistal width of canine and the intercanine distance were measured on the obtained models, and the MCI was calculated. The sensitivity and specificity for each of the two indexes were also calculated. MCI had a sensitivity of 33.85% and a specificity of 75.29 % in sex estimation. The mesiodistal width of canine had a sensitivity of 66.15 % and a specificity of 84.71 %. The mesiodistal width of canine has a higher sensitivity and specificity than the MCI in the medicolegal estimation of sex.

A case series of unusual root canal morphology

Aim: The thorough knowledge of tooth morphology and its variations is essential for successful endodontic treatment. Case report: This article reports an unusual root canal configuration that was detected in a maxillary central incisor with two root canals , mandibular canine with two canals and mandibular canine with two roots and root canals. Conclusions: These case reports increase the awareness of clinicians on variations in the root canal anatomy so that complete disinfection and obturation of the root canal system is possible.

Ectopic Eruption of a Transmigrated Mandibular Canine: A Rare Case Report.

Migration of teeth, both physiological as well as pathological, is a well-documented phenomenon. Transmigration, on the other hand, is a rare phenomenon where a tooth crosses the midline and migrates to the opposite side without any pathological influence. An impacted tooth especially canines migrate to a location some distance away but do not usually cross the midline. Even so, the tooth remains impacted. Here is a unique case of transmigration of a left mandibular canine, which has erupted labial to its counterpart on the right mandibular arch. Transmigration of the mandibular canine is a rare phenomenon. Even rare is an eruption of this transmigrated canine into the opposite arch where it can be mistaken as a supernumerary tooth.

A variation anatomy of mandibular canine with successful endodontic management.

Knowledge of development of the teeth and their natural anatomy is applicable to clinical practice, especially during root canal therapy. Although endodontic treatment of mandibular canine generally offers no difficulties, it is advisable to always be aware of the possibility of variations in its internal anatomy. Mandibular canines are recognized as usually monoradicular i.e., single rooted, in most of the cases although approximately 15% may have two canals. Further the incidences of two rooted canine with two root canals is as low as 1.7%. This article presents a case of mandibular canine having two roots with two canals and its successful endodontic management.

CBCT assisted diagnosis and treatment of mandibular canine with apical periodontitis and double root canals in a case / 实用口腔医学杂志

A case of mandibular canine with apical periodontitis and double root canals was treated by CBCT assisted diagnosis and root ca-nal therapy.CBCT distinctly demonstrated the morphology of the root canal system in three dimensions and provided the information of canal varieties,prevented missed canals and conserved dentin.CBCT can guarantee the success of root canal therapy for the tooth with canal vareties.

A right mandibular canine with two root canals:A case report of a Hui nationality patient / 实用口腔医学杂志

The mandibular canine usually has a single-root with a single canal.A case of a Hui nationality patient who has a mandibular ca-nine with two root canals is reported in this paper.

Mechanical responses from mandibular canine with different movement types in Invisalign treatment / 医用生物力学

Objective To compare mechanical responses from mandibular canine with different movement types in orthodontic treatment with Invisalign. Methods Based on computed tomography images of the teeth and their supporting tissues, the finite element model of the mandible and periodontal ligaments was established. The translation, inclination and rotation movements of the canine in buccolingual direction were simulated to obtain displacements and stresses of the canine and periodontal ligaments under the three different movements. Results The initial movements of the canine and stress distributions on periodontal ligaments were mainly determined by different movement types of the canine. The stress distributions on periodontal ligaments were similar when the canine was in translation and inclination movements. The bodily movement trend of the canine was much larger in rotation movement than that in translation movement under the same displacement magnitude. Conclusions The mechanical responses and its degrees from canine would be different under different movement types. To get better understanding with such different responses can help design more reasonable orthodontic treatment with Invisalign, avoid the damage to periodontium and achieve the orthodontic treatment with less time.

Bilateral two-rooted mandibular canines in the same individual: a case report / Caninos mandibulares birradiculares bilaterales en el mismo individuo: presentación de un caso

The normal anatomy of canines teeth comprises one root and one large canal centered through its axis; however some canines may present two roots and two canals. Thus, the knowledge of normal root canal anatomy and their variations is essential to minimize the possibility of occurrence of accidents during the development of dental treatments. In this report we describe a case of bilateral mandibular canines with two roots and two canals found radiographically in the same individual.

La anatomía normal de los dientes caninos comprende una raíz y un gran canal centrado a través de su eje, sin embargo algunos dientes canino pueden presentar dos raíces y dos canales. Así, el conocimiento de la anatomía normal de canal de la raíz y sus variaciones son esenciales para minimizar la posibilidad de accidentes durante el desarrollo de tratamientos dentales. En este informe se describe el caso de dientes caninos mandibulares con dos raíces y dos canales bilateralmente hallados radiográficamente en el mismo individuo.

Canino mandibular con dos raíces / Mandibular canine with two roots

El canino inferior es un diente con raíz larga y ancha que le permite una adecuada implantación en el arco dentario. Es considerado un pilar valioso en muchos tratamientos rehabilitadores. Con la finalidad de mantener este elemento dentario es necesario realizar un correcto diagnóstico, para lo que se tendrá en cuenta el conocimiento de las variaciones anatómicas. El objetivo del artículo es presentar un caso de canino mandibular con dos raíces con sus respectivos canales radiculares .Paciente femenina de 21 años, que acudió a la Clínica de Radiología de la Facultad de Odontología de Piracicaba con indicación de una radiografía panorámica para valorar cirugía de terceros molares. Llamó la atención una configuración inusual de las raíces de los caninos mandibulares. En el examen de tomografía computarizada de haz cónico se observó que el canino mandibular del lado derecho presentaba dos raíces separadas, cada una con sus respectivos canales radiculares. Se concluyó que a pesar de la baja prevalencia de las variaciones anatómicas, estas pueden ocurrir en el número de raíces y canales de los caninos mandibulares, tal como se presenta en este reporte de caso(AU)

The mandibular canine is a robust and long tooth which allows an adequate implantation in the dental arch. It is considered a valuable pillar in many rehabilitating treatments. In order to maintain this important dental element, it is necessary to make a correct diagnosis, for which the knowledge of the different anatomic variations should be kept in mind. The objective of this article is to present a case of a mandibular canine with two roots with their respective root canals. A 21-year-old female patient went to the Radiology Clinic at the Faculty of Odontology of Piracicaba with the indication of a panoramic radiography for preoperative third molars surgery. An unusual root configuration of the mandibular canines was observed. In the cone beam CT, it was observed that the right mandibular canine presented two separate roots, each one with their respective radicular canals. It was concluded that, despite of the low prevalence of anatomical variations, these can occur in the root system of the mandibular canines, as presented in this case report(AU)

Prevalence of two root canals in human mandibular anterior teeth in an Iranian population.

Background: Complete debridement and obturation of the root canal system is a key factor in successful endodontic treatment and the operator should therefore have thorough knowledge of the root canal morphology of the teeth. Numerous studies have been carried out to investigate the canal configuration of different tooth types in various populations. Aims: The aim of the present study was to investigate the internal anatomy of mandibular incisors and canines in an Iranian population. Materials and Methods: A total of 463 mandibular anterior teeth, including 186 centrals, 128 laterals, and 149 canines, were examined. A standard clearing technique was used to make the teeth transparent. India ink was injected into the canals of the teeth and the samples were examined with a magnifying glass. The root canal configurations were categorized according to the Vertucci classification. Results: All the incisors in this study had one root, and 12.08% of the canines had two roots. We found a slightly higher prevalence of the second canal in incisors than in canines (36.62% vs. 20.48%). However, the probability of canines having two separate apical foramina was higher than that for incisors (12.08% vs. 0.64%). Conclusions: In view of the high prevalence of two-canaled mandibular anterior teeth found in this study, it would be prudent to assume that any mandibular anterior tooth being treated is two-canaled until a thorough search proves otherwise.

Study of mandibular canine teeth dimorphism in establishing sex identity in Gujarat region.

Mandibular canines exhibit the greatest sexual dimorphism amongst all teeth. The present study was performed on 368 healthy MBBS students of Medical College, Bhavnagar (216 males, 152 females) of 18 – 24 years with the aim to investigate whether any correlation existed between odontometric measures including mandibular canine index, and sex determination in the year of 2006. Mean value of intercanine distance was higher in males than females and the difference was statistically highly significant (p value<0.01). Comparison of mean values of left and right mandibular canine widths exhibited lesser values in females. The variation in right and left mandibular canine width between males and females was highly significant (p value<0.01). The right and left mandibular canine index (MCI) among genders showed significant difference. Our study conclusively establishes the existence of a definite statistically significant sexual dimorphism in mandibular canines and MCI.

Techniques In Detection of Superfluous Root Morphology : A Review And Case Report of A Mandibular Canine With Two Roots.

The Endodontic paradigm is based on thorough debridement, disinfection followed by three-dimensional obturation of root canal system. A comprehensive knowledge of canal anatomy and its variation is crucial because untreated root canals can lead to endodontic failure. The prognosis of endodontic treatment in teeth exhibiting a complex anatomy is unfavourable if clinicians fail to recognize extra canals. Many investigators have reported anatomical variations associated with mandibular canine. Mandibular canines are recognized as usually having one root and one root canal in most cases, although approximately 6% may have two canals and sometimes two roots (1.2%). This case demonstrates the successful endodontic treatment of a right mandibular canine with an extra root.

Concomitant occurrence of canine transmigration and symmetrical agenesis of incisors – A case report.

Transmigration of mandibular canine is an unusual phenomenon characterized by movement of the impacted canine crossing the mandibular midline. Mandibular canine are rarely found impacted in a horizontal position in the mandible. Most of the time, this entity occurred as an isolated finding. However there are reports showing association of dentigerous cyst and a hyperdontia. The purpose of this report is to present a case of transmigrated canine associated with agenesis of mandibular both central incisors which is not reported previously.

Correlation of odontometric measures in sex determination.

Mandibular canines exhibit the greatest sexual dimorphism amongst all teeth. The present study was performed on 400 healthy volunteers (200 males, 200 females) of 17 - 21 years with the aim to investigate whether any correlation existed between odontometric measures including mandibular canine index, and sex determination. Mean value of intercanine distance was higher in males than females and the difference was statistically highly significant (p value<0.01). Comparison of mean values of left and right mandibular canine widths exhibited lesser values in females. The variation in right and left mandibular canine width between males and females was highly significant (p value<0.01). The right and left mandibular canine index (MCI) among genders showed no significant difference. A mesio-distal canine width greater than 7.3 mm was suggestive of male sex. Our study conclusively establishes the existence of a definite statistically significant sexual dimorphism in mandibular canines and that MCI is of limited value.