Comparación de las características anatómicas del conducto nasopalatino en pacientes dentados y desdentados mediante tomografía computarizada de haz cónico. Lima 2018-2020 / Comparison of the anatomic characteristics of the nasopalatine duct in toothed and edentulous patients by cone beam computed tomography. Lima 2018-2020

Objetivo : Comparar las características anatómicas del CNP en pacientes dentados y desdentados mediante Tomografía Computarizada de Haz Cónico (TCHC) del Servicio de Radiología Bucomaxilofacial realizadas en el Centro Dental Docente de la Universidad Peruana Cayetano Heredia. Material y métodos : Se evaluaron todas las TCHC adquiridas entre los años 2018 y 2020, que cumplan con ciertos criterios; donde se comparó las características anatómicas del CNP. Los datos fueron registrados en una base de datos, luego representados en tablas. Resultados : Se evaluaron 216 volúmenes tomográficos (VT), divididos en dos grupos: dentados y desdentados. La forma cilíndrica y la forma de canal único fueron las más encontradas en ambos grupos. La longitud y la distancia fueron mayores en pacientes dentados, no se encontró asociación con relación al diámetro; la inclinación fue mayor en pacientes desdentados, encontrándose asociación con relación a la inclinación entre los grupos comparados. Conclusiones : Se encontraron múltiples diferencias anatómicas del CNP entre los pacientes dentados y desdentados evaluados con TCHC con relación al sexo y la edad.

Objective : To compare the anatomical characteristics of the NPC in dentate and edentulous patients using Cone Beam Computed Tomography (CBCT) of the Bucomaxillofacial Radiology Service performed at the Centro Dental Docente of the Universidad Peruana Cayetano Heredia. Material and methods : All TCHC acquired between the years 2018 and 2020, which meet certain criteria, were evaluated; where the anatomicals characteristics of the CNP were compared. The data were recorded in a database, then represented in tables. Results : 216 tomographic volumes were evaluated, divided into two groups: dentate and edentulous. The single cylindrical shape and the single channel shape were the most found in both groups. The length and distance were greater in dentate patients, no association was found in relation to the diameter, the inclination was greater in edentulous patients, finding an association in relation to the inclination between the compared groups. Conclusions : Multiple anatomical differences of the CNP were found between the dentate and edentulous patients evaluated with TCHC in relation to sex and age.

Morphometric study of incisive, greater and lesser palatine foramina: a novel point of maxillary nerve block in a Thai population / Estudio morfométrico del foramen palatino incisivo, mayor y menor: un punto novedoso de bloqueo del nervio maxilar en una población tailandesa

SUMMARY: To study the morphometric location of the incisive, greater, and lesser palatine foramina for maxillary nerve block. Two hundred Thai dry skulls were randomly organized from the Forensic Osteology Research Center. The distances of the parameters were measured via Vernier caliper.: Thedistances from the incisive foramen to the incisive margin of the premaxilla were 10.93?2.42 mm in males and 10.98?2.06 mm in females. From the left side, the incisive foramen to the greater palatine foramen (GPF) was39.07?2.23mm in males and 38.57?2.41 mm in females, and from the right side were 39.81?2.37 mm in males and 38.62?2.53mm in females. From the left side, the incisive foramen to the lesser palatine foramen (LPF) was 43.16?2.23 mm in males and 41.84?2.42mm in females and from the right side were 42.93?2.14 mm in males and 41.76?2.61 mm in females. The GPF found at medial to the maxillary third molar were 94-95 % in males and 84 % in females. These findings suggest that the medial position to the third molar teeth be used as a landmark for a palatine nerve block in Thais. These findings will help dentists to perform local anesthetic procedures, especially the nasopalatine and greater palatine nerve blocks, more effectively.

RESUMEN: El objetivo de este trabajo fue estudiar la localización morfométrica de los forámenes palatinos incisivos, mayores y menores para el bloqueo del nervio maxilar. Se organizaron al azar doscientos cráneos secos tailandeses del Centro de Investigación de Osteología Forense. Las distancias de los parámetros se midieron mediante un calibre Vernier. Las distancias desde el foramen incisivo hasta el margen incisivo de la premaxila fueron 10,93 ? 2,42 mm en hombres y 10,98 ? 2,06 mm en mujeres. Desde el lado izquierdo, el foramen incisivo al foramen palatino mayor (FPM) fue de 39,07 ? 2,23 mm en los hombres y 38,57 ? 2,41 mm en las mujeres, y del lado derecho fue de 39,81 ? 2,37 mm en los hombres y 38,62 ? 2,53 mm en las mujeres. Del lado izquierdo, el foramen incisivo al foramen palatino menor (LPF) fue de 43,16 ? 2,23 mm en hombres y 41,84 ? 2,42 mm en mujeres y del lado derecho 42,93 ? 2,14 mm en hombres y 41,76 ? 2,61 mm en mujeres. El FPM encontrado medial al tercer molar maxilar fue 94-95 % en hombres y 84 % en mujeres. Estos hallazgos sugieren que la posición medial de los terceros molares se utilice como punto de referencia para un bloqueo del nervio palatino en individuos tailandeses. Estos hallazgos ayudarán, de manera más eficaz, a los dentistas a realizar procedimientos anestésicos locales, especialmente los bloqueos nasopalatinos y del nervio palatino mayor.

Morphological Analysis of Length and Shape Nasopalatine Canal onHuman Dry Skulls

Background:To assess length and shape of nasopalatine canal on human dry skulls. Subjects and Methods:Fifty- four dry human skulls of either gender was recruited for the study. The length of the nasopalatine canal was measured from the definite point (interproximal region) of the central incisors to the distal end of the incisive foramen. Incisive foramen diameter was calculated in the sagittal plane by measuring the anteroposterior distance of the oral entrance of the NPC. Shape was categorized into 4 types, Cylindrical, funnel, hourglass and spindle shape.Results:The mean length of nasopalatine canal was 16.2 mm in males and 13.4 mm in females. A significant difference was observed (P< 0.05). A non- significant difference in male (5.3 mm) and females (4.9 mm) incisive foramen diameter was observed. The most common shape of nasopalatine canal was cylindrical in 23, funnel in 7, hourglass in 21 and spindle shape in 3 skulls. A significant difference was observed (P< 0.05).Conclusion: Nasopalatine canal morphology assessment is essential to prevent iatrogenic injury to the anatomical structures. Mostcommon shape found to be hour glass and cylindrical

Caracterización anatómica del conducto nasopalatino mediante tomografía computarizada de haz cónico en una población peruana / Anatomic characterization of the nasopalatine canal through cone beam computed tomography in a Peruvian population

RESUMEN El Conducto Nasopalatino (CNP) es una estructura importante que puede ser susceptible de daño durante procedimientos quirúrgicos en el maxilar superior anterior; por lo tanto examinar meticulosamente la anatomía y variantes del CNP se hace imperativo para un buen diagnóstico y un apropiado plan de tratamiento. Objetivo: Realizar una caracterización anatómica del CNP utilizando Tomografía Computarizada de Haz Cónico (TCHC). Material y métodos: Se evaluaron 154 imágenes de TCHC, en las que se analizó CNP en cuanto a su longitud, forma, e inclinación con respecto al paladar duro y el diámetro anteroposterior del foramen incisivo (FI) en hombres y mujeres de 18 años de edad en adelante. Resultados: A la evaluación del CNP en cortes sagitales de TCHC presentó diferentes formas; se encontró que la forma más común fue la cilíndrica en 89 pacientes (58%), seguida de la forma de embudo en 38 (25%), y las menos frecuentes fueron la forma a de reloj de arena en 20 (13%) y de huso en 7 (5%). La longitud promedio del CNP fue de 10,83 mm (± 2,13), el promedio del diámetro anteroposterior del FI fue de 3,44 mm (± 0,80) y la angulación promedio en relación al paladar duro fue de 16,44° (± 7,32). Conclusiones: El estudio mostró la variabilidad del CNP en la población peruana, tanto en la forma, longitud e inclinación, así como también en el diámetro del FI.

SUMMARY Nasopalatine Canal (NPC) is an important structure that may be susceptible to damage during surgical procedures in the anterior maxilla, therefore a thorough examination of the anatomy and variants of the NPC is imperative for a good diagnosis and an appropriate treatment plan. Objective: To perform an anatomic characterization of NPC using Computed Beam Computed Tomography (CBCT). Material and methods: 154 images of CBCT were evaluated, in which the NPC was analyzed in terms of length, shape, and inclination with respect to the hard palate and the maximum anteroposterior of the incisive foramen (IF) in men and women of 18 years of age and onwards. Results: to the evaluation of the NCP in sagittal slices of CBCT, it presented different forms, it was found to the cylindrical shape as the most common in 89 patients (58%), followed by the funnel shape in 38 (25%), and the less frequent were the shape of hourglass in 20 (13%) and spindle (5%). The average length of the NCP was 10.83 mm (± 2.13), the average of the anteroposterior diameter of the FI was 3.44 mm (± 0.80) and the average angulation of the CNP in relation to the hard palate was 16.44 ° (± 7.32). Conclusions: The study showed the variability of NCP in the Peruvian population, like in shape, length and inclination, as well as the diameter of the FI.

Morphological features of the incisive canal in patients of the first adult age

The incisive canal and its contents are often subject to intervention in maxillofacial surgery, otorhinolaryngology, and various areas of dentistry. The purpose of this paper is to study the variability of the dimensional and topographic characteristics of the incisive and nasal foramina of the incisive canal depending on the gender, shape, and parameters of the craniofacial complex in the first adult age. The authors have studied the parameters of the craniofacial complex, such as the morphological facial height, the upper morphological facial height, and the morphological facial breadth. They also have determined the Garson facial index and the upper face index. Cone-beam computerized tomography has been used in order to determine the number of foramina of Stensen and incisive foramina, their mesiodistal and vestibulo-lingual diameters, the shape of the incisive foramen; the distance from the incisive foramen to the labial inferior and palatal inferior points of the alveolar process; the distance from the incisive foramen to the central incisors, lateral incisors, canines of the maxilla; the bone density around the incisive canal; the length, shape, and type of incisive canal. Quantitative data were processed by variational statistical methods using the Statistica software package for Windows v 10.0. The significance of differences between groups was assessed using the Kolmogorov- Smirnov criterion at a significance level of p<0.05. It has been discovered that the incisive canal, the nasal and incisive foramina had a pronounced individual variability in size, shape, and topography depending on the gender, shape, the Garson facial index and upper face index, as well as the presence of correlations between the diameters and the number of nasal and incisive foramina. The authors have determined the values of bone tissue density in the area of the nasal and incisive foramina.

Morphometric Study Of The Greater Palatine Foramen In The Dried Bones Of Eastern India

Introduction: Greater palatine foramen is a very important landmark for administering anesthesia in maxillofacialand dental surgeries. Getting the anesthesia correct each time is a technical manoeuvre, which require sufficientamount of clinical skill and experience. The anatomical landmark has been described by many authors but asper the data in the eastern Indian population it is sparse. This study aims to define the greater palatine foramenaccording to various landmarks.Materials and Methods: One hundred and three skulls from two medical colleges of eastern India were studiedby the first and second authors separately and consecutively. All the skulls were examined for any broken partsin the hard palate and in the greater palatine foramen region. Only the skulls that were intact in these areas wereconsidered for the study.Result: The mean distance of the greater palatine foramen to the incisive foramen was 35.45mm in the males and34.82mm in the females. The average distance between the greater palatine foramen and the midline maxillarysuture was 13.22mm in the males and 12.98 mm in the females. In 85.92% cases we found the GPF to be oval inshape and it opened in to the oral cavity antero-medially in 58% of the cases. With respect to the molar teeth, in42.71% of the cases the greater palatine foramen was present opposite the anterior ½ of the 3rd molar.

Anatomic study of the incisive canal in relation to midpalatal placement of mini-implant / 대한치과교정학회지

OBJECTIVE: The purpose of this study was to reveal the position of the incisive foramen in relation to the incisive papilla and cusp tips. METHODS: Plaster models and CT images of 25 adult orthodontic patients were used to measure the width of the incisive canal and positions of the anterior and posterior borders of the incisive foramen in relation to the incisive papilla. RESULTS: The palatal surface distance from the interdental papilla between the maxillary central incisors to the posterior border of the incisive foramen along the palatal surface was 1.7 fold of the distance from the interdental papilla between the central incisors to the posterior border of the incisive papilla. The distance between the posterior border of the incisive papilla and posterior border of the incisive foramen along the palatal surface was 6.15 +/- 1.75 mm. The anteroposterior position of the posterior border of the incisive foramen was slightly anterior to the lingual cusp tips of the maxillary 1st premolars. The width of the incisive foramen was 4.03 +/- 0.64 mm, therefore it is recommended to position the mini-implant more than 3 mm laterally when placing a mini-implant lateral to the incisive foramen, from the center. CONCLUSIONS: These results can be used as a reference in presuming the position of the incisive foramen when placing mini-implant in the anterior palate area.