scholarly journals A retrospective radiographic evaluation of the anterior loop of the mental nerve: Comparison between panoramic radiography and cone beam computerized tomography

2015 ◽  
pp. e239-e245 ◽  
Author(s):  
A. Vujanovic-Eskenazi ◽  
JM. Valero-James ◽  
MA. Sanchez-Garces ◽  
C. Gay-Escoda
Keyword(s):  
Computerized Tomography ◽  
Panoramic Radiography ◽  
Cone Beam ◽  
Radiographic Evaluation ◽  
Mental Nerve ◽  
Anterior Loop ◽  
Cone Beam Computerized Tomography

Accuracy of Cone Beam Computerized Tomography and a Three-Dimensional Stereolithographic Model in Identifying the Anterior Loop of the Mental Nerve: A Study on Cadavers

2012 ◽  
Vol 38 (6) ◽  
pp. 668-676 ◽  
Author(s):  
Ruben R. Santana ◽  
Jaime Lozada ◽  
Alejandro Kleinman ◽  
Aladdin Al-Ardah ◽  
Alan Herford ◽  
...  
Keyword(s):  
Computerized Tomography ◽  
Mean Difference ◽  
Cone Beam ◽  
Nerve Plexus ◽  
Mental Nerve ◽  
Stl Model ◽  
Anterior Loop ◽  
Significant Difference ◽  
Cone Beam Computerized Tomography ◽  
The Mean

The objective of this ex vivo cadaver study was to determine the accuracy of cone beam computerized tomography (CBCT) and a 3-dimensional stereolithographic (STL) model in identifying and measuring the anterior loop length (ANLL) of the mental nerve. A total of 12 cadavers (24 mental nerve plexus) were used for this study. Standardized CBCT scans of each mandible were obtained both with and without radiographic contrast tracer injected into the mental nerve plexus, and STL models of the two acquired CBCT images were made. The ANLL were measured using CBCT, STL model, and anatomy. The measurements obtained from the CBCT images and STL models were then analyzed and compared with the direct anatomic measurements. A paired sample t test was used, and P values less than .05 were considered statistically significant. The mean difference between CBCT and anatomic measurement was 0.04 mm and was not statistically significant (P = .332), whereas the mean difference between STL models and anatomic measurement was 0.4 mm and was statistically significant (P = .042). There was also a statistical significant difference between CBCT and the STL model (P = .048) with the mean difference of 0.35 mm. Therefore, CBCT is an accurate and reliable method in determining and measuring the ANLL but the STL model over- or underestimated the ANLL by as much as 1.51 mm and 1.83 mm, respectively.

Assessment of the Anterior Loop of the Mental Nerve Using Cone Beam Computerized Tomography Scan

2015 ◽  
Vol 41 (6) ◽  
pp. 632-639 ◽  
Author(s):  
Chun-I Lu ◽  
John Won ◽  
Aladdin Al-Ardah ◽  
Ruben Santana ◽  
Dwight Rice ◽  
...  
Keyword(s):  
Computerized Tomography ◽  
Age Groups ◽  
Inferior Alveolar Nerve ◽  
Mental Foramen ◽  
Cone Beam ◽  
Mental Nerve ◽  
Anterior Loop ◽  
Significant Difference ◽  
Cone Beam Computerized Tomography ◽  
The Mean

The purpose of this study is to use cone-beam computerized tomography (CBCT) scans with oblique-transverse reconstruction modality to measure and compare the anterior loop length (AnLL) of the mental nerve between gender and age groups and to compare the difference between the right and left sides. Sixty-one female and 61 male CBCT scans were randomly selected for each age group: 21–40, 41–60, and 61–80 years. Both right- and left-side AnLLs were measured in each subject using i-CATVision software to measure AnLLs on the oblique transverse plane using multiplanar reconstruction. The anterior loop was identified in 85.2% of cases, with the mean AnLL of the 366 subjects (732 hemimandibles) being 1.46 ± 1.25 mm with no statistically significant difference between right and left sides or between different gender groups. However, the mean AnLL in the 21–40 year group (1.89 ± 1.35 mm) was larger than the AnLL in the 41–60 year group (1.35 ± 1.19 mm) and the 61–80 year group (1.13 ± 1.08 mm). In conclusion, when placing implants in close proximity to mental foramina, caution is recommended to avoid injury to the inferior alveolar nerve. No fixed distance anteriorly from the mental foramen should be considered safe. Using CBCT scans with the oblique-transverse method to accurately identify and measure the AnLL is of utmost importance in avoiding and protecting its integrity.

scholarly journals Anterior loop of the mental nerve in Saudi sample in Riyadh, KSA. A cone beam computerized tomography study

2020 ◽  
Author(s):  
Osama Saeed Alyami ◽  
Mazen Saeed Alotaibi ◽  
Pradeep Koppolu ◽  
Abdulrahman Alosaimy ◽  
Ashraf Abdulghani ◽  
...  
Keyword(s):  
Computerized Tomography ◽  
Cone Beam ◽  
Mental Nerve ◽  
Anterior Loop ◽  
Cone Beam Computerized Tomography

Location of the Mandibular Incisive Canal Related to the Placement of Dental Implants: A Case Report

2019 ◽  
Vol 45 (6) ◽  
pp. 474-482 ◽  
Author(s):  
Dong-Jin Choi ◽  
Kee-Deog Kim ◽  
Bock-Young Jung
Keyword(s):  
Case Report ◽  
Panoramic Radiography ◽  
Anatomical Variations ◽  
Mental Foramen ◽  
Cone Beam ◽  
Incisive Canal ◽  
Anterior Loop ◽  
Cone Beam Computerized Tomography ◽  
Mental Canal

Cone-beam computerized tomography (CBCT) can show an uncommon mandibular incisive canal that cannot be detected by panoramic radiography, which is used preoperatively to form the initial plan of the size and length of an implant fixture for surgical placement in the mandibular interforaminal area. Determination of the position and anatomical configuration of the mandibular incisive canal is challenging. The purpose of this case report is to discuss anatomical variations in the mandibular incisive canal and the mental canal by reviewing previous studies. Furthermore, we propose that the anterior loop length of the mental canal near the mental foramen, as well as the diameter of the mandibular incisive canal, should be verified by CBCT prior to performing implant surgery in the anterior mandibular area to prevent possible nerve damage.

Anterior Loop of the Inferior Alveolar Canal: A Cone-Beam Computerized Tomography Study of 494 Cases

2016 ◽  
Vol 42 (4) ◽  
pp. 333-336 ◽  
Author(s):  
Halil Sahman ◽  
Yildiray Sisman
Keyword(s):  
Statistical Analysis ◽  
Computerized Tomography ◽  
Cone Beam ◽  
Loop Length ◽  
Anterior Loop ◽  
Cbct Image ◽  
Inferior Alveolar Canal ◽  
Cone Beam Computerized Tomography ◽  
The Mean ◽  
The Right

The aim of this study was to use cone-beam computerized tomography (CBCT) images of patients to assess the prevalence of different types, especially anterior loop, of the mental portion of the inferior alveolar canal and to evaluate the anterior loop lengths. CBCT images of 494 patients providing inclusion criteria were examined by 2 oral radiologists. Sagittal, axial, and multiplanar reformatted images were used to detect the type of mental portion of the inferior alveolar canal. The anterior loop length was measured in the respective sections of each CBCT image. Statistical analysis was performed using SPSS v. 15, and t tests were used for statistical analysis. Of the 494 patients, 217 anterior loops were detected in 141 (28.5%) patients. The mean anterior loop lengths for the right side and the left side were 2.19 ± 1 mm and 2.08 ± 0.89 mm, respectively. The difference between males and females in the mean anterior loop length was statistically significant for both sides (Right: P < .05; Left: P < .05). A presurgical CBCT image examination is necessary prior to implant insertion to reveal the presence of anterior loop and to detect actual anterior loop length.

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