MR-Imaging of teeth and periodontal apparatus: an experimental study comparing high-resolution MRI with MDCT and CBCT

Abstract

This experimental study shows the diagnostic feasibility of MRI in visualization of teeth and periodontal anatomy. Detection of periodontal structures was significantly better with MRI than with MDCT or CBCT. Prospective trials have to evaluate further the potential benefit of MRI in a clinical setting.

Early detection of pulp necrosis and dental vitality after traumatic dental injuries in children and adolescents by 3-Tesla magnetic resonance imaging

“…Nevertheless, already in the late 1990s, Gahleitner et al was able to demonstrate all teeth, the dental pulp, and the content of the mandibular canal using low-field-strength 1.5T MRI (Gahleitner et al, 1999). By analyzing new sequences, even without using contrast media, highresolution 3T MRI was discovered to have growing investigative potential and the ability to visualize dental structures, e.g., periodontal structures and the dental pulp (Gaudino et al, 2011;Assaf et al, 2014). As already mentioned by other authors, we agree about the importance of direct positioning of the head and neck coil next to the jaw being very important for the illustrative quality of taken MRI images (Fedde et al, 1993;Stehling et al, 2007;Krasny et al, 2012).…”

“…This was performed in comparison to nonaffected teeth with clinical vitality and without any additional past treatment. All observers had to analyze the images using the following rating scale regarding to alterations of signal intensity of the dental pulp at nT1w, fsT1w, and fsT2w at distinct time intervals (1 ¼ no signs of alterations of signal intensity of the dental pulp between affected and non-affected teeth, 2 ¼ slightly alterations of signal intensity of the dental pulp between affected and nonaffected teeth, and 3 ¼ obvious alterations of signal intensity of the dental pulp between affected and nonaffected teeth) (Liang et al, 2010a(Liang et al, , 2010bGaudino et al, 2011;Assaf et al, 2014).…”

Dental age estimation of living persons: Comparison of MRI with OPG

“…Mineralization and eruption stages of the molars of all four quadrants (teeth 16, 17, 18; 26, 27, 28; 36, 37, 38; 46, 47, 48) were evaluated, based on the fact that good visibility of dental and periodontal structures had been demonstrated using MRI [16]. Mineralization was assessed according to the staging system established by Demirjian and Mincer using the stages A -H [4,7,19], eruption was evaluated using the stages A-D according to Olze [8].…”

“…To date, dental MRI is not often used in clinical dentistry even if there exist some initial studies, e.g., to detect dental abnormalities M a n u s c r i p t 3 and dental illnesses as well as abnormalities of the jaw [15][16][17], and has been shown to be suitable for children and adolescents [18].…”

High isotropic resolution magnetic resonance imaging of the mandibular canal at 1.5 T: a comparison of gradient and spin echo sequences

“…5 Additionally, several comparisons with X-ray-based methods such as CBCT have shown good agreement between MRI and CBCT. 6,7 One focus for the application of MRI in dental imaging was the localization of the mandibular nerve [7][8][9][10] for diagnostic or pre-surgical evaluation of the nerve's course relative to dental roots. Although CBCT allows acquiring three-dimensional (3D) high-resolution images (typically 0.4 mm resolution 11 ), the contrast between the nerve and its surrounding tissue (i.e.…”