Bassam Hassan

Ahmadu Bello University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Daniël Wismeijer

Vrije Universiteit Amsterdam

P.F. van der Stelt

Academic Center for Dentistry Amsterdam

Azin Parsa

University of Maryland, Baltimore

Norliza Ibrahim

University of Malaya

Reinhilde Jacobs

KU Leuven

Irene H. A. Aartman

Academic Center for Dentistry Amsterdam

David Anssari Moin

University of Amsterdam

Hesam Mirmohammadi

Academic Center for Dentistry Amsterdam

Guillermo Pradíes

Universidad Complutense de Madrid

Francisco Haiter‐Neto

Universidade Estadual de Campinas (UNICAMP)

Cooperative Institutions

Division of Undergraduate Education

American Association of Endodontists

Academic Center for Dentistry Amsterdam

Clinical Research Management

Universidade Estadual de Campinas (UNICAMP)

Universidade de São Paulo

John Wiley & Sons (United States)

Université Paris Cité

University of Amsterdam

Laboratory Orofacial Pathologies, Imaging and Biotherapies

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

A comparative evaluation of Cone Beam Computed Tomography (CBCT) and Multi-Slice CT (MSCT)

European Journal of Radiology (2009)

Xin Liang Reinhilde Jacobs Bassam Hassan Limin Li Ruben Pauwels

Mandibular canal

Visibility

Mental foramen

Cone-Beam CT

Image noise

10.1016/j.ejrad.2009.03.042

Cite

Citations (391)

Table of Contents

Journal of Prosthetic Dentistry (2017)

Anja Liebermann Caroline Freitas Marc Ramberger Josef Schweiger Claudia Angela

Table (database)

Table of contents

10.1016/s0022-3913(17)30194-4

Cite

Citations (0)

Influence of object location in cone beam computed tomography (NewTom 5G and 3D Accuitomo 170) on gray value measurements at an implant site

Oral Radiology (2013)

Azin Parsa Norliza Ibrahim Bassam Hassan P.F. van der Stelt Daniël Wismeijer

DICOM

10.1007/s11282-013-0157-x

Cite

Citations (14)

Clinical evaluation comparing the fit of all-ceramic crowns obtained from silicone and digital intraoral impressions

Clinical Oral Investigations (2015)

Cristina Zarauz Arelhys Valverde Francisco Martínez‐Rus Bassam Hassan Guillermo Pradíes

Impression

10.1007/s00784-015-1590-5

Cite

Citations (91)

Reliability of voxel gray values in cone beam computed tomography for preoperative implant planning assessment.

PubMed (2012)

Azin Parsa Norliza Ibrahim Bassam Hassan Alessandro Motroni P.F. van der Stelt

To assess the reliability of cone beam computed tomography (CBCT) voxel gray value measurements using Hounsfield units (HU) derived from multislice computed tomography (MSCT) as a clinical reference (gold standard).Ten partially edentulous human mandibular cadavers were scanned by two types of computed tomography (CT) modalities: multislice CT and cone beam CT. On MSCT scans, eight regions of interest (ROI) designating the site for preoperative implant placement were selected in each mandible. The datasets from both CT systems were matched using a three-dimensional (3D) registration algorithm. The mean voxel gray values of the region around the implant sites were compared between MSCT and CBCT.Significant differences between the mean gray values obtained by CBCT and HU by MSCT were found. In all the selected ROIs, CBCT showed higher mean values than MSCT. A strong correlation (R=0.968) between mean voxel gray values of CBCT and mean HU of MSCT was determined.Voxel gray values from CBCT deviate from actual HU units. However, a strong linear correlation exists, which may permit deriving actual HU units from CBCT using linear regression models.

Hounsfield scale

Multislice computed tomography

Multislice

Source

Cite

Citations (83)

Computer‐assisted template‐guided custom‐designed 3D‐printed implant placement with custom‐designed 3D‐printed surgical tooling: an in‐vitro proof of a novel concept

Clinical Oral Implants Research (2016)

David Anssari Moin Wiebe Derksen Hugo Waars Bassam Hassan Daniël Wismeijer

The aim of this study was to introduce a new concept for computer-assisted template-guided placement of a custom 3D-designed/3D-printed implant with congruent custom 3D-designed/3D-printed surgical tooling and to test the feasibility and accuracy of this method in-vitro.One partially edentulous human mandibular cadaver was scanned with a cone-beam computed tomography (CBCT) system and intra-oral scan system. The 3D data of this cadaver were imported in specialized software and used to analyse the region of a missing tooth. Based on the functional and anatomical parameters, an individual implant with congruent surgical tooling and surgical guided template was designed and 3D-printed. The guided osteotomy was performed, and the custom implant inserted. To evaluate the planned implant position in comparison with the placed implant position, the mandible with implant was scanned again with the CBCT system and software matching was applied to measure the accuracy of the procedure.The angular deflection with the planned implant position was 0.40°. When comparing the 3D positions of the shoulder, there is a deviation of 0.72 mm resulting in an apical deviation of 0.72 mm.With the use of currently available technology, it is very well feasible to create in a virtual simulation a custom implant with congruent custom surgical tooling and to transfer this to a clinical setting. However, further research on multiple levels is needed to explore this novel approach.

3d printed

3d printer

10.1111/clr.12838

Cite

Citations (7)

The effect of scan parameters on cone beam CT trabecular bone microstructural measurements of the human mandible

Dentomaxillofacial Radiology (2013)

Norliza Ibrahim Azin Parsa Bassam Hassan P.F. van der Stelt Irene H. A. Aartman

The objective of this study was to investigate the effect of different cone beam CT scan parameters on trabecular bone microstructure measurements. A human mandibular cadaver was scanned using a cone beam CT (3D Accuitomo 170; J.Morita, Kyota, Japan). 20 cone beam CT images were obtained using 5 different fields of view (4×4 cm, 6×6 cm, 8×8 cm, 10×10 cm and 10×5 cm), 2 types of rotation steps (180° and 360°) and 2 scanning resolutions (standard and high). Image analysis software was used to assess the trabecular bone microstructural parameters (number, thickness and spacing). All parameters were measured twice by one trained observer. Intraclass correlation coefficients showed high intraobserver repeatability (intraclass correlation coefficient, 0.95-0.97) in all parameters across all tested scan parameters. Trabecular bone microstructural measurements varied significantly, especially in smaller fields of view (p = 0.001). There was no significant difference in the trabecular parameters when using different resolutions (number, p = 0.988; thickness, p = 0.960; spacing, p = 0.831) and rotation steps (number, p = 1.000; thickness, p = 0.954; spacing, p = 0.759). The scan field of view significantly influences the trabecular bone microstructure measurements. Rotation steps (180° or 360°) and resolution (standard or high) selections are not relevant.

Repeatability

10.1259/dmfr.20130206

Cite

Citations (34)

A comparative evaluation of Cone Beam Computed Tomography (CBCT) and Multi-Slice CT (MSCT). Part II: On 3D model accuracy

European Journal of Radiology (2009)

Xin Liang Ivo Lambrichts Yi Sun Kathleen Denis Bassam Hassan

Gold standard (test)

Multidetector computed tomography

Cone-Beam CT

10.1016/j.ejrad.2009.04.016

Cite

Citations (213)

COVID-19 Infection Related Bowel Perforation

Cureus (2022)

Dina Alnabwani Nagapratap Ganta Smriti Kochhar Veera Jayasree Latha Bommu Bassam Hassan

During an ongoing pandemic of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a novel virus, new discoveries about its complications and treatment are made every day. Bowel perforation is another rarely reported complication due to the virus itself leading to ischemia or can be due to the treatment with antiviral drugs that reduces the integrity of epithelial barriers. This makes the bowel more prone to perforation even in patients with no prior history of bowel disease. We report a case of bowel perforation in a 72-year-old male patient with severe COVID-19 infection.

Bowel perforation

Perforation

Pandemic

Coronavirus

10.7759/cureus.21830

Cite

Citations (2)

Influence of object location in different FOVs on trabecular bone microstructure measurements of human mandible: a cone beam CT study

Dentomaxillofacial Radiology (2013)

Norliza Ibrahim Azin Parsa Bassam Hassan P.F. van der Stelt Irene H. A. Aartman

The aim of this study was to assess the influence of different object locations in different fields of view (FOVs) of two cone beam CT (CBCT) systems on trabecular bone microstructure measurements of a human mandible. A block of dry human mandible was scanned at five different locations (centre, left, right, anterior and posterior) using five different FOVs of two CBCT systems (NewTom™ 5G; QR Verona, Verona, Italy and Accuitomo 170; Morita, Kyoto, Japan). Image analysis software (CTAn software v. 1.1; SkyScan, Kontich, Belgium) was used to assess the trabecular bone microstructural parameters (thickness, Tb.Th; spacing, Tb.Sp; number, Tb.N; bone volume density, BV/TV). All measurements were taken twice by one trained observer. Tb.Th, Tb.Sp and Tb.N varied significantly across different FOVs in the NewTom 5G (p < 0.001) and the Accuitomo 170 (p < 0.001). For location, a significant difference was observed only when measuring BV/TV (p = 0.03) using the NewTom 5G. The trabecular bone microstructural measurements obtained from CBCT systems are influenced by the size of FOVs. Not all trabecular bone parameters measured using different CBCT systems are affected when varying the object location within the FOVs.

Mandible (arthropod mouthpart)

Cone-Beam CT

10.1259/dmfr.20130329

Cite

Citations (22)