Geometric accuracy of magnetic resonance imaging<scp>–</scp>derived virtual <scp>3‐dimensional</scp> bone surface models of the mandible in comparison to computed tomography and cone beam computed tomography<scp>:</scp> A porcine cadaver study

Probst, Florian; Burian, Egon; Malenova, Yoana; Lyutskanova, Plamena; Stumbaum, Maria Juliane; Ritschl, Lucas M.; Kronthaler, Sophia; Karampinos, Dimitrios C.; Probst, Monika

doi:10.1111/cid.13033

Cited by 11 publications

(11 citation statements)

References 55 publications

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“…Numerous studies have compared the differences between two 3-dimensional models using RMSE values. 16,20,27,32 The 3-dimensional shape of the required implanted bone block and bone harvesting site were also designed for the control group and provided to the surgeon for reference. This might provide more guidance to surgeons than the routine imaging data, thereby improving surgical outcomes.…”

Section: Discussionmentioning

confidence: 99%

“…Specifically, the RMSE values in the guide and control groups were 0.37 ± 0.16 and 0.72 ± 0.29 mm ( p < 0.001), respectively, indicating that using the combination of guides could improve the predictability and outcomes of the block bone grafting procedure as compared to the conventional free‐hand surgery. Numerous studies have compared the differences between two 3‐dimensional models using RMSE values 16,20,27,32 . The 3‐dimensional shape of the required implanted bone block and bone harvesting site were also designed for the control group and provided to the surgeon for reference.…”

Section: Discussionmentioning

confidence: 99%

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Fully digital versus conventional workflow for horizontal ridge augmentation with intraoral block bone: A randomized controlled clinical trial

Zhu

Liu

et al. 2022

Clin Implant Dent Rel Res

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Objectives To compare the outcome and efficiency of the computer‐aided intraoral block bone grafting procedure with those of the conventional technique for the augmentation of horizontal ridge defects. Materials and Methods A total of 28 patients with single missing tooth in esthetic zone with class IV horizontal alveolar bone defect in need of dental implant restoration were recruited. Computer‐aided design of the implant restoration and intraoral block bone grafting was performed for all the participants. The patients were randomly and equally divided into guide and control groups. A fully guided bone harvesting, trimming, and grafting surgery was executed in the guide group. The control group patients underwent surgery without any guide. After 6 months, all the patients underwent implant placement. The primary outcomes were the root mean square estimate (RMSE) values between the outer contours of the actual implanted and planned bone block as well as the RMSE values between the inner surface of the implanted bone block and the original bone surface of the recipient site immediately after surgery. The secondary outcomes were the trimming time of bone block and the surgery‐associated complications. The postoperative visual analog scale (VAS) of pain, swelling, and mouth opening difficulty was recorded. Results All 28 patients underwent intraoral block bone grafting, followed by the placement of implant after 191.8 ± 19.69 days. The RMSE values between the outer contours of the implanted and planned bone blocks were significantly lower in the guide group (0.37 ± 0.16 mm) as compared to those in the control group (0.72 ± 0.29 mm) (p = 0.0007). The RMSE values between the inner contours of the graft block and original bone at the recipient site were lower in the guide group (0.35 ± 0.15 mm) as compared to those in the control group (0.48 ± 0.17 mm) (p = 0.043). The duration of bone block trimming was shorter in the guide group (401.51 ± 97.60 s) as compared to the control group (602.36 ± 160.57 s) (p = 0.0005). In the control group, two patients received secondary bone grafting, one patient experienced bleeding of donor site and temporary hypoesthesia of the lower lip and chin skin, and one patient developed temporary sensitivity of the adjacent tooth. Conclusions As compared to the conventional procedure, the fully digital workflow in the present study seemed to be a more accuracy and effective protocol for horizontal ridge augmentation with intraoral block bone. Trial registration: http://chictr.org.cn (ChiCTR2000036390).

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Fully digital versus conventional workflow for horizontal ridge augmentation with intraoral block bone: A randomized controlled clinical trial

Zhu

Liu

et al. 2022

Clin Implant Dent Rel Res

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“…No additional hardware or specific software is needed to acquire and interpret the images. Furthermore, the geometric accuracy of the deployed 3D T1 GRE sequence compared to CT and CBCT has been shown before [ 23 ]. Furthermore, MRI does not only give information about the osseous anatomy but at the same time acquires information regarding trauma to the surrounding soft tissue.…”

Section: Discussionmentioning

confidence: 93%

Imaging of traumatic mandibular fractures in young adults using CT-like MRI: a feasibility study

et al. 2022

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Objectives To assess and compare the diagnostic performance of CT-like images based on a three- dimensional (3D) T1-weighted spoiled gradient-echo sequence (3D T1 GRE) with CT in patients with acute traumatic fractures of the mandible. Materials and methods Subjects with acute mandibular fractures diagnosed on conventional CT were prospectively recruited and received an additional 3 T MRI with a CT-like 3D T1 GRE sequence. The images were assessed by two radiologists with regard to fracture localization, degree of dislocation, and number of fragments. Bone to soft tissue contrast, diagnostic confidence, artifacts, and overall image quality were rated using a five-point Likert-scale. Agreement of measurements was assessed using an independent t-test. Results Fourteen subjects and 22 fracture sites were included (26 ± 3.9 years; 4 females, 10 males). All traumatic fractures were accurately detected on CT-like MRI (n = 22, κ 1.00 (95% CI 1.00–1.00)). There was no statistically significant difference in the assessment of the fracture dislocation (axial mean difference (MD) 0.06 mm, p = 0.93, coronal MD, 0.08 mm, p = 0.89 and sagittal MD, 0.04 mm, p = 0.96). The agreement for the fracture classification as well as the inter- and intra-rater agreement was excellent (range κ 0.92–0.98 (95% CI 0.96–0.99)). Conclusion Assessment of mandibular fractures was feasible and accurate using CT-like MRI based on a 3D T1 GRE sequence and is comparable to conventional CT. Clinical relevance For the assessment of acute mandibular fractures, CT-like MRI might become a useful alternative to CT in order to reduce radiation exposure particularly in young patients.

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“…Recently, Van der Cruyssen et al and Juerchott et al have shown that by optimizing sequence protocols, direct visualization of small trigeminal branches and even complex structures like the dental pulp is possible, which improves our understanding of nerve physiology in vivo [36][37][38][39]. Furthermore, using T1-based imaging or ultrashort or zero echo time sequences, even the visualization of hard tissues like the mandibular bone and pathological alterations in the course of periodontitis or osteonecrosis has been feasible [9,27,40,41].…”

Section: Discussionmentioning

confidence: 99%

“…In periodontics, Probst et al described water-sensitive STIR sequences to detect bone edema in generalized periodontitis, and Juerchott et al described the use of MRI for the evaluation of furcation defects [9,19]. In oral surgery, the use of MRI for implant planning and third molar removal demonstrated good diagnostic accuracy [27][28][29]. In orthodontics, a recent MRI study showed reliable 3D cephalometric analysis when compared to CBCT [30].…”

Section: Introductionmentioning

confidence: 99%

Visualization of clinically silent, odontogenic maxillary sinus mucositis originating from periapical inflammation using MRI: a feasibility study

et al. 2023

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Objectives Maxillary sinus mucositis is frequently associated with odontogenic foci. Periapical inflammation of maxillary molars and premolars cannot be visualized directly using radiation-based imaging. The purpose of this study was to answer the following clinical question: among patients with periapical inflammatory processes in the maxilla, does the use of magnetic resonance imaging (MRI), as compared to conventional periapical (AP) and panoramic radiography (OPT), improve diagnostic accuracy? Methods Forty-two subjects with generalized periodontitis were scanned on a 3 T MRI. Sixteen asymptomatic subjects with mucosal swelling of the maxillary sinus were enrolled in the study. Periapical edema was assessed using short tau inversion recovery (STIR) sequence. Apical osteolysis and mucosal swelling were assessed by MRI, AP, and OPT imaging using the periapical index score (PAI). Comparisons between groups were performed with chi-squared tests with Yates’ correction. Significance was set at p < 0.05. Results Periapical lesions of maxillary premolars and molars were identified in 16 subjects, 21 sinuses, and 58 teeth. Bone edema and PAI scores were significantly higher using MRI as compared to OPT and AP (p < 0.05). Using the STIR sequence, a significant association of PAI score > 1 and the presence of mucosal swelling in the maxillary sinus was detected (p = 0.03). Conclusion Periapical inflammation and maxillary mucositis could be visualized using STIR imaging. The use of MRI may help detect early, subtle inflammatory changes in the periapical tissues surrounding maxillary dentition. Early detection could guide diagnostic criteria, as well as treatment and prevention.

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Geometric accuracy of magnetic resonance imaging–derived virtual 3‐dimensional bone surface models of the mandible in comparison to computed tomography and cone beam computed tomography: A porcine cadaver study

Cited by 11 publications

References 55 publications

Fully digital versus conventional workflow for horizontal ridge augmentation with intraoral block bone: A randomized controlled clinical trial

Fully digital versus conventional workflow for horizontal ridge augmentation with intraoral block bone: A randomized controlled clinical trial

Imaging of traumatic mandibular fractures in young adults using CT-like MRI: a feasibility study

Visualization of clinically silent, odontogenic maxillary sinus mucositis originating from periapical inflammation using MRI: a feasibility study

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