Browsing by Author "Ghoneima, A."

Now showing 1 - 7 of 7
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    3D Printed Cast and Interim Obturator for Maxillectomy with Pedicled Buccal Fat Pad Flap
    (2022) Bellicchi, T.; Jacobs, C.B.T.; Wood, Z.M.; Ghoneima, A.; Levon, J.; Morton, D.
    This poster presents a hybrid workflow using intra-oral digital scanning, 30 printing, Biocryl vacuform matrix, and soft denture reline material to obturate a partiallyhealed pedicled buccal fat pad flap maxillectomy. The goal of this poster is to demonstrate an effective workflow for interim obturation with recent post-surgical reconstruction patients unable to tolerate traditional intraoral impression techniques and materials.
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    Endodontic Obturation: A Volumetric Analysis Using 3D Imaging Technology
    (Office of the Vice Chancellor for Research, 2015-04-17) Daetwyler, M.; Riad, K.; Ehrlich, Y.; Ghoneima, A.
    Abstract: A Root Canal (RC) obturation that fully occupies that prepared canal space contributes to treatment success. Invasive methods that involve sectioning of treated teeth have been used evaluate the quality of RC obturation. The aim of this study was to measure the amount of filling material in RC treated teeth using imaging methods: Cone Beam Computed tomography (CBCT) and 3D volumetric imaging software. These methods will be applied in an analysis of both Warm Vertical (WV) and Cold Lateral (CL) obturation methods. This noninvasive approach may be a preliminary step for future in vivo research. A noninvasive 3D imaging method was able to measure volume of RC fillings. Canals filled using WV contained a greater percentage of empty space than canals filled using the CL method in this study. This method could prove to be an efficient, cost effective tool for evaluating obturation material.
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    Facial Scanning, Digital Sculpting, Stereolithographic Rapid Prototyping: Auricular, Orbital, and Nasal Prosthetic Case Reports
    (2022) Bellicchi, T.; Jacobs, C.B.T.; Wood, Z.M.; Ghoneima, A.; Diaz-Rubayo, D.; Alderson, N.; Levon, J.; Morton, D.
    This poster presents a digital workflow for three maxillofacial prosthetic patients. The goal of this poster is to demonstrate the use of facial surface imaging, computer-aided design, and rapid prototyping resin molds for fabrication of silicone facial prosthetics. Pre-surgical scan data and contralateral anatomy informs prosthetic design. A workflow for immediate prosthetic rehabilitation involving intraoperative facial scanning at the time of tumor resection is presented.
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    Molar-Incisor hypomineralization in controls vs CLP with primary or prior to secondary alveolar grafts
    (Office of the Vice Chancellor for Research, 2016-04-08) Allam, E.; Ghoneima, A.; Tholpady, S.; Eckert, G.; Klene, C.; Kula, K.
    Molar incisor hypomineralization (MIH) is a congenital defect of unknown etiology that can affect both esthetics and cariogenic susceptibility. The objective of this study was to determine whether MIH is greater in patients with cleft lip and palate (CLP) who underwent primary alveolar grafting (PAG) as compared to CLP prior to secondary alveolar grafting (SAG) and to controls. A retrospective analysis of intraoral photographs of 13 (10M:3F; 8.9 ± 1.2 yrs) CLP patients who underwent a PAG, 27 (18M:9F;10.0 ± 2.1 yrs) CLP prior to SAG, and 60 (30M:30F; 12.4 ± 1.8 yrs) controls without CLP was performed. Mantel-Haenszel chi-square tests were used to compare the three groups for differences in MIH scores and Wilcoxon Rank Sum tests were used to compare the groups for differences in average MIH scores. A 5% significance level was used for all tests. MIH scores were significantly higher for the PAG and SAG groups compared to the control group (p<0.001). The PAG group had significantly higher incisor MIH (p=0.016) than the SAG group. MIH average scores were significantly higher for the two graft groups compared to the controls (p<0.0001). The PAG group had significantly higher average MIH score and average MIH score for incisors than the SAG group (p=0.03). The results suggest that CLP patients, in general, have significantly greater MIH compared with controls and CLP with PAGs have significantly greater MIH in the incisor region than CLP waiting for SAGs. The increased severity of MIH could be related to the grafting during the time of incisor crown formation.
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    Mucosal Thickening of Maxillary Sinuses of CLP vs non-CLP patients
    (Office of the Vice Chancellor for Research, 2015-04-17) Kula, K.; Starbuck, J.; Hale, L.; Tholpady, S.; Ghoneima, A.
    Objectives: The objective of this retrospective radiographic study was to compare mucosal thickening of maxillary sinuses of patients with cleft lip and palate (CLP) vs. non-CLP. Methods: Following IRB approval, three-dimensional cone beam computerized tomographs (CBCT; i-CAT) of children with unilateral CLP and children without CLP (age and gender matched; 8-14yoa; n=15ea) were selected randomly from pre-existing orthodontic records. Following reliability studies, one investigator segmented both sinuses from each CBCT using Dolphin-3D Imaging software. The sinuses were separated coronally into .4mm slices anterioposteriorly. Bony sinuses and airspaces were outlined manually on each slice. Software calculated total sinus and airspace area. Areas were summed and multiplied by slice thickness to determine volume. Mucosal thickening was the difference between total sinus and airspace volumes. Percent mucosal thickening was calculated. Since no significant differences existed between cleft (left) and noncleft (right) sides of either patient group (p>.05), sinuses for each group were pooled (n=30 ea). Significant differences in total sinus, airspace, mucosal thickening volumes and % mucosal thickening were determined using paired t-tests, accepting p<0.05 as significant. Principal Component Analysis (PCA) scatterplots were used to determine patterns of multivariate variation based on group, age, and sex. MANOVA was used to confirm PCA findings. Reliability was determined using Intraclass Correlations (ICC). Results: Reliability was excellent (ICC>0.99). The CLP total sinus and airspace volume were significantly smaller and mucosal thickening and % mucosal thickening were significantly greater than non-CLP sinuses (all p<.024). PCA showed that 89.6% of sample variance was explained by PC axis 1 and 2 (group and age). Age group 8-9yrs showed more separation with 13-14yrs than with 10-12yrs. MANOVA confirmed a significant effect of sample (p=.001) and age (p=.007).
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    Three-dimensional airway volumes and most constricted areas in children
    (Office of the Vice Chancellor for Research, 2012-04-13) Kula, K.; Ahn, E.J.; Liu, S.; Stewart, K.; Eckert, G.; Halum, S.; Dillehay, J.; Eraso, F.; Ghoneima, A.
    Objective: The objectives of this retrospective study using cone beam computed tomography (CBCT) were to determine if there are differences in the volume of various airway segments and the most constricted area (MCA) of children with different dentoskeletal patterns. Methods: The initial CBCTs of 83 orthodontic patients (30 Angle’s Class I; 26 Class II; and 27 Class III) were collected from a private orthodontic office. Following reliability studies, various parameters of the craniofacial complex, airway volume, and MCA were measured utilizing Dolphin 3D software. Comparisons among the three dental and the skeletal malocclusion classes were performed using one-way ANOVA and Fishers Protected Least Significant. Associations of the airway volumes and the MCA with other parameters were determined using correlation coefficients, accepting p < 0.05 as significant for all tests. Results: Maxillary right sinus volume was the only airway segment showing significant difference among different dental classes. Maxillary sinus volume also correlated moderately with anterior facial height and mandibular length. No significant differences were found between the MCA and different dentoskeletal classifications. Conclusions: The only significant difference in airway parameters among the dentoskeletal classes was that the dental Class II subjects had greater right sinus volume than the other classes. Shorter anterior facial height or mandibular length could be indicators for decreased airway volume in children. Funding: IUSD Graduate Research Committee, IUPUI Three-Dimensional Imaging of the Craniofacial Complex Center, Jarabak Endowed Professorship
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    Virtual Surgical Planning for Implant Supported Auricular Prosthetics: Three Scanning Techniques
    (2022) Bellicchi, T.; Ghoneima, A.; Wood, Z.; Jacobs, C.B.T.; Levon, J.
    The purpose of this poster is to determine the most efficient and accurate method for auricular scanning in implant-supported auricular prosthetics. Implant-supported auricular prosthetics are ideally suited for virtual surgical planning. Most patients have an intact contralateral ear that may be used to digitally model the missing ear due to cancer, trauma, or congenital defect. Imaging data may be acquired by a variety of 3-dimensional data acquisition methods. Once data is captured from the intact ear, it can be copied, mirrored, and placed in the appropriate position for virtual implant planning and surgical guide design.