Quantitative evaluation of maxillary interradicular bone with cone-beam computed tomography for bicortical placement of orthodontic mini-implants

Yang, Lun; Li, Feifei; Cao, Meng; Chen, Hong; Wang, Xi; Chen, Xue-Peng; Weiran, Gao; Petrone, Joseph; Ding, Yin

doi:10.1016/j.ajodo.2015.02.018

Cited by 27 publications

(14 citation statements)

References 26 publications

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“…Other authors measured the space between the roots at different heights on panoramic radiographs 10 or CBCTs. 13 , 14 , 16 , 18 , 20 , 33 A systematic review of the available literature concluded that ideal sites for orthodontic miniscrew placement, defined by appropriate quantity and quality of bone, are the buccal and lingual interradicular spaces between the second premolar and the second molar, both in the maxilla and the mandible. 11…”

Section: Introductionmentioning

confidence: 99%

Correlation between tooth size-arch length discrepancy and interradicular distances measured on CBCT and panoramic radiograph: an evaluation for miniscrew insertion

Tepedino

Cornelis

Chimenti

et al. 2018

Dental Press J. Orthod.

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Introduction: The selection of appropriate sites for miniscrew insertion is critical for clinical success. Objectives: The aim of the present study was to evaluate how interradicular spaces measured on panoramic radiograph compare with Cone-Beam Computed Tomography (CBCT), and how crowding can influence the presence of available space for miniscrew insertion, in order to define a new “safe zones” map. Methods: A total of 80 pre-treatment panoramic radiographs and 80 CBCT scans with corresponding digital models were selected from the archives of the department of Dentistry, Aarhus University. Crowding was measured on digital models, while interradicular spaces mesial to the second molars were measured on panoramic radiographs and CBCTs. For panoramic radiographs, a magnification factor was calculated using tooth widths measured on digital models. Statistical analyses were performed to investigate the correlation between the amount of crowding and the available interradicular space. Visual maps showing the amount of interradicular spaces measured were drawn. Results: The most convenient interradicular spaces are those between the second molar and the first premolar in the mandible, and between the central incisors in the maxilla. However, some spaces were revealed to be influenced by crowding. Conclusions: Calibration of panoramic radiographs is of utmost importance. Generally, panoramic radiographs underestimate the available space. Preliminary assessment of miniscrew insertion feasibility and the related selection of required radiographs can be facilitated using the new “safe zone” maps presented in this article.

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Section: Introductionmentioning

confidence: 99%

Correlation between tooth size-arch length discrepancy and interradicular distances measured on CBCT and panoramic radiograph: an evaluation for miniscrew insertion

Tepedino

Cornelis

Chimenti

et al. 2018

Dental Press J. Orthod.

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“…In recent years, maxillofacial cone beam computed tomography (CBCT) has been widely used in dental implanting [ 7 , 8 ], assessment of orthodontic treatment, complex alveolar surgery, oral local system reconstruction and treatment of tooth and dental pulp diseases. CBCT is advantageous in high spatial resolution, short scan time and rapid image acquisition [ 9 – 13 ].…”

Section: Introductionmentioning

confidence: 99%

Comparison of digital panoramic radiography versus cone beam computerized tomography for measuring alveolar bone

2017

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BackgroundCone beam computerized tomography (CBCT) has been widely used in dental implanting. However, the local hospitals usually don’t have access to CBCT due to the cost and medical investment, especially in West of China. The doctors in local hospitals have to make reasonable dental planting using orthopantomography (OPG) to reduce risks. Therefore, it is clinically meaningful to determine the magnification rate of OPG to obtain correct diagnosis. This study investigated the magnification rate of OPG in measuring different maxillofacial loci compared with CBCT.MethodsEighty-six patients demanding dental implanting were scanned by CBCT and OPG. The vertical distance between the alveolar ridge crest of the maxillary first molar and the sinus bottom of the upper jaw, the distance between the alveolar ridge crest of the mandibular first molars and the top of nerviduct in the mandibular alveolar, and the distance between the alveolar ridge crest of the maxillary central incisors and the bottoms of the nasal cavities were measured. The horizontal distance in those loci were also measured. The distances derived from CBCT were used as reference. The distances between the two methods were compared using paired t-test. The magnification rates at these positions were calculated. The relationship between the data acquired from the two methods was analyzed Pearson correlation.ResultsThe correlation coefficients (R) between the paired samples obtained from OPG and CBCT were highly related (P < 0.05) with R values varying from 0.840 and 0.959 in vertical distances and R values varying from 0.703 and 0.904 in horizontal distances. Compared with data obtained from CBCT, the mean vertical magnification rates were 11.38% and 12.95% vertically and 8.55% and 9.43% horizontally for the first molars in the right and left maxilla respectively; 7.26% and 6.35% vertically and 5.33% and 4.96% horizontally for the first molars in the right and left mandible respectively; and 5.55% and 4.84% vertically and 6.53% and 7.47% horizontally for the central incisors in the upper right and left jaws respectively.ConclusionThe magnification rates of OPG at these teeth are different. The distances measured by OPG were highly correlated with that measured by CBCT.

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“…Se han usado diversos planos de referencia para las medidas de cortical y espesor óseo para la colocación de minitornillos, entre ellos el plano oclusal, el plano horizontal perpendicular al plano medio sagital, el plano de Frankfort y el plano palatino ( 2,17,29,30,32 ). En este estudio, se utilizó un plano tangente al reborde de la cresta alveolar debido a que se utilizaron tomografías de un sector donde no se podía usar el plano oclusal, que es el más utilizado.…”

Section: Discussionunclassified

“…Entre ellos, Baumgaertel et al ( 5 ) midieron el espesor de hueso cortical a 2, 4, y 6 mm de la cresta alveolar, pero en 30 cráneos secos y en el área interdental. Han reportado que el espesor de hueso cortical es mayor en mandíbula que en maxilar ( 5,30 ), al medir la cortical de la cresta infracigomática a nivel del primer molar a 7 mm sobre la cresta alveolar reportaron una medida de 2,6 mm de cortical. Teniendo en cuenta estas mediciones de la cortical ósea de la zona medida en este estudio y las medidas del espesor de la cresta infracigomática se puede sugerir la colocación de mini tornillos de 6 a 8 mm de longitud ( 18,30,33 ).…”

Section: Discussionunclassified

Evaluación del espesor de la cresta infracigomática para la colocación de minitornillos mediante tomografía computarizada de haz cónico

Agudelo-Botero

María²

2019

Rev Cient Odontol (Lima)

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Introducción: Para colocar miniimplantes de anclaje ortodóncico es necesario evaluar el hueso en el sitio de implantación. El objetivo de este estudio fue determinar la existencia de hueso infracigomático midiendo la altura y el espesor a nivel de la raíz mesiovestibular del segundo molar superior, a 2, 4 y 6 mm de la cresta alveolar, utilizando la tomografía computarizada de haz cónico (TCHC). Método: Se revisaron 127 TCHC de sujetos entre 17 a 75 años. Se determinó la existencia de hueso basados en el criterio de altura y presencia de contacto entre raíz y cortical. Cuando la altura de la cresta infracigomática era > 10 mm se tomaban medidas de espesor a 2, 4, y 6 mm de la cresta alveolar, y se compararon por género. Resultados: De 127 TCHC se midió la altura de la cresta solo en 70 TCHC. El intervalo del 95% de confianza para esta medida fue de 8,64 a 9,76 mm, pero solamente en 28 (40%) era > 10mm. Las medidas de espesor se tomaron solamente en esos 28 casos, obteniendo un promedio de 9,2 mm, 8,3 mm y 6,6 mm cuando se midió a 2, 4 y 6 mm, respectivamente. No se encontraron diferencias significativas entre géneros. Conclusiones: Tanto la apreciación cualitativa del hueso como las mediciones de altura y espesor de la cresta infracigomática indican que la región a nivel del segundo molar superior no es un sitio seguro para la colocación de minitornillos.

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Quantitative evaluation of maxillary interradicular bone with cone-beam computed tomography for bicortical placement of orthodontic mini-implants

Cited by 27 publications

References 26 publications

Correlation between tooth size-arch length discrepancy and interradicular distances measured on CBCT and panoramic radiograph: an evaluation for miniscrew insertion

Correlation between tooth size-arch length discrepancy and interradicular distances measured on CBCT and panoramic radiograph: an evaluation for miniscrew insertion

Comparison of digital panoramic radiography versus cone beam computerized tomography for measuring alveolar bone

Evaluación del espesor de la cresta infracigomática para la colocación de minitornillos mediante tomografía computarizada de haz cónico

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