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ASSOCIATION BETWEEN INTERNAL AND EXTERNAL CAROTID ARTERY CALCIFICATIONS IN PATIENTS UNDERGOING DENTAL IMPLANT THERAPY
OOOO Volume 127, Number 1 Materials and Methods: After institutional review board approval, a preliminary study was performed on patients undergoing either preimplantation assessment of jaws or evaluation of atypical facial pain, and measurements were recorded. A total of 50 CBCT volumes were identified for the selected craniocervical cephalometric measurements. Analysis of the CBCT volumes and cephalometry were performed to record various craniocervical measurements and determine the potential risk of atlantoaxial atlanto-occipital instability. The measurements were done by using the midsagittal-view CBCT images. These measurements included BAI, BDI, VAAI, and PR. It was anticipated that these measurements would provide a risk estimate for cervical instability that could potentially result in spinal cord injury. All CBCT volumes were acquired by using the Carestream CS9300 machine (Carestream, Atlanta, GA). Results: Based on the preliminary results, the average VAAI measurement was 0.7626, the average BAI was 4.970 mm, the average BDI was 5.043 mm, and the average PR was 0.6961. Discussion: Apart from VAAI, BDI, and BAI, the PR3 was utilized in this study to find out the atlantoaxial dissociation (normal PR = 1:1). A ratio over 1 indicates atlanto-occipital dissociation (AOD. BAI is the horizontal distance between basion and the posterior cortex of the axis (normal 12 mm). BDI is the distance between the basion and the tip of the dens (normal 8.5 mm). Both BAI and BDI are used to diagnose AOD injuries.
References 1 Kulkarni AG, Goel AH, Vertical atlantolaxial index: a new craniovertebral radiographic index. J Spinal Disord Tech. 2008;21:4-10. 2 Chamberlain WE. Basilar impression (platybasia): a bizarre developmental anomaly of the occipital bone and upper cervical spine with striking and misleading neurological manifestations. Yale J Biol Med. 1939;11:487-496. 3 Powers B, Miller MD, Kramer RS, Martinez S, Gehweiler JA, Jr. Traumatic anterior atlanto-occipital dislocation. Neurosurgery. 1979;4(1):12-17. 4 Rojas CA, Bertozzi JC, Martinez CR, et al. Reassessment of the craniocervical junction: normal values on CT. AJNR Am J Neuroradiol. 2007;28:1819-1823. Conflict of Interest: None.
ASSOCIATION BETWEEN INTERNAL AND EXTERNAL CAROTID ARTERY CALCIFICATIONS IN PATIENTS UNDERGOING DENTAL IMPLANT THERAPY. S. MUTALIK, A. TADINADA. UNIVERSITY OF CONNECTICUT SCHOOL OF DENTAL MEDICINE, FARMINGTON, CT. Background: Vascular calcifications are often carefully assessed by oral and maxillofacial (OMF) radiologists on cone beam computed tomography (CBCT) scans. This is done because of the risk for cerebral ischemia and legal liabilities. Scans with a large field of view (FOV) often depict both extra- and intracranial carotid calcifications. Because of radiation dose concerns, the FOV is often reduced in certain examinations that tend to show extracranial carotid calcifications more often than intracranial vessels. It is valuable to predict the presence of intracranial carotid calcifications, which often pose a higher risk for cerebral ischemia in the presence of extracranial carotid calcification.
ABSTRACT
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Therefore, the current study aimed to assess the association between extra- and intracranial carotid calcifications. Materials and Methods: Retrospective evaluation of 1000 CBCT scans of patients referred for dental implant therapy was done, and on the basis of FOV, 450 CBCT scans that included both the intra- and extracranial carotid calcifications were chosen for evaluation. The scans were evaluated for the presence/absence of vascular calcifications. The association between intra- and extracranial carotid calcifications was evaluated by using the x2 test. Results: Overall, 171 (38%) extracranial and 172 (38.2%) intracranial calcifications were detected. Of the 171 extracranial findings, 74 were bilateral, 45 were on the left, and 52 were on the right. Of the 172 intracranial findings, 112 were bilateral, 29 were on the left, and 31 were on the right. When extracranial calcification was present, intracranial calcifications were also noted in 61.9% cases. There was a strong association between extra- and intracranial calcifications (Pearson x2 107.643; P < .0001). Conclusions: In this patient population, there is a significant association between extra- and intracranial carotid artery calcifications. Future studies should be performed on a larger patient population to better understand this association.
References 1 Damaskos S, Aartman IH, Tsiklakis K, van der Stelt P, Berkhout WE. Association between extra- and intracranial calcifications of the internal carotid artery: a CBCT imaging study. Dentomaxillofac Radiol. 2015;44:20140432. 2 Damaskos S, Tsiklakis K, Syriopoulos K, van der Stelt P. Extra- and intra-cranial arterial calcifications in adults depicted as incidental findings on cone beam CT images. Acta Odontol Scand. 2015;73:202-209. 3 da Silveira HL, Damaskos S, Ar us NA, Tsiklakis K, Berkhout EW. The presence of calcifications along the course of internal carotid artery in Greek and Brazilian populations: a comparative and retrospective cone beam CT data analysis. Oral Surg Oral Med Oral Pathol Oral Radiol. 2016;121:81-90. Conflicts of Interest: None.
DENTAL RADIOGRAPHIC PRESCRIBING PRACTICES: SURVEY OF DENTAL HYGIENISTS IN THE U.S.. K.B. MUZZIN, D.J. FLINT, E. SCHNEIDERMAN. TEXAS A&M UNIVERSITY COLLEGE OF DENTISTRY, DALLAS, TX. Background: Potential harm from ionizing radiation has led to the development of guidelines to protect patients and practitioners from unnecessary radiation exposure; however, these guidelines may or may not be followed in practice. Objective: This study surveyed U.S. dental hygienists with regard to radiology policies in the workplace. Methods: The survey, consisting of 62 knowledge and practice items regarding use of dental radiography, was based on the 2012 publication by the American Dental Association (ADA) and the U.S. Food and Drug Administration (FDA): “Dental Radiographic Examinations: Recommendations for Patient Selection & Limiting Radiation Exposure.” The study was granted exempt status by the Texas A&M University Baylor College of Dentistry (TAMU-BCD) institutional review board. The survey link was emailed to 10,000 subscribers of the
References 1 Kulkarni AG, Goel AH, Vertical atlantolaxial index: a new craniovertebral radiographic index. J Spinal Disord Tech. 2008;21:4-10. 2 Chamberlain WE. Basilar impression (platybasia): a bizarre developmental anomaly of the occipital bone and upper cervical spine with striking and misleading neurological manifestations. Yale J Biol Med. 1939;11:487-496. 3 Powers B, Miller MD, Kramer RS, Martinez S, Gehweiler JA, Jr. Traumatic anterior atlanto-occipital dislocation. Neurosurgery. 1979;4(1):12-17. 4 Rojas CA, Bertozzi JC, Martinez CR, et al. Reassessment of the craniocervical junction: normal values on CT. AJNR Am J Neuroradiol. 2007;28:1819-1823. Conflict of Interest: None.
ASSOCIATION BETWEEN INTERNAL AND EXTERNAL CAROTID ARTERY CALCIFICATIONS IN PATIENTS UNDERGOING DENTAL IMPLANT THERAPY. S. MUTALIK, A. TADINADA. UNIVERSITY OF CONNECTICUT SCHOOL OF DENTAL MEDICINE, FARMINGTON, CT. Background: Vascular calcifications are often carefully assessed by oral and maxillofacial (OMF) radiologists on cone beam computed tomography (CBCT) scans. This is done because of the risk for cerebral ischemia and legal liabilities. Scans with a large field of view (FOV) often depict both extra- and intracranial carotid calcifications. Because of radiation dose concerns, the FOV is often reduced in certain examinations that tend to show extracranial carotid calcifications more often than intracranial vessels. It is valuable to predict the presence of intracranial carotid calcifications, which often pose a higher risk for cerebral ischemia in the presence of extracranial carotid calcification.
ABSTRACT
e41
Therefore, the current study aimed to assess the association between extra- and intracranial carotid calcifications. Materials and Methods: Retrospective evaluation of 1000 CBCT scans of patients referred for dental implant therapy was done, and on the basis of FOV, 450 CBCT scans that included both the intra- and extracranial carotid calcifications were chosen for evaluation. The scans were evaluated for the presence/absence of vascular calcifications. The association between intra- and extracranial carotid calcifications was evaluated by using the x2 test. Results: Overall, 171 (38%) extracranial and 172 (38.2%) intracranial calcifications were detected. Of the 171 extracranial findings, 74 were bilateral, 45 were on the left, and 52 were on the right. Of the 172 intracranial findings, 112 were bilateral, 29 were on the left, and 31 were on the right. When extracranial calcification was present, intracranial calcifications were also noted in 61.9% cases. There was a strong association between extra- and intracranial calcifications (Pearson x2 107.643; P < .0001). Conclusions: In this patient population, there is a significant association between extra- and intracranial carotid artery calcifications. Future studies should be performed on a larger patient population to better understand this association.
References 1 Damaskos S, Aartman IH, Tsiklakis K, van der Stelt P, Berkhout WE. Association between extra- and intracranial calcifications of the internal carotid artery: a CBCT imaging study. Dentomaxillofac Radiol. 2015;44:20140432. 2 Damaskos S, Tsiklakis K, Syriopoulos K, van der Stelt P. Extra- and intra-cranial arterial calcifications in adults depicted as incidental findings on cone beam CT images. Acta Odontol Scand. 2015;73:202-209. 3 da Silveira HL, Damaskos S, Ar us NA, Tsiklakis K, Berkhout EW. The presence of calcifications along the course of internal carotid artery in Greek and Brazilian populations: a comparative and retrospective cone beam CT data analysis. Oral Surg Oral Med Oral Pathol Oral Radiol. 2016;121:81-90. Conflicts of Interest: None.
DENTAL RADIOGRAPHIC PRESCRIBING PRACTICES: SURVEY OF DENTAL HYGIENISTS IN THE U.S.. K.B. MUZZIN, D.J. FLINT, E. SCHNEIDERMAN. TEXAS A&M UNIVERSITY COLLEGE OF DENTISTRY, DALLAS, TX. Background: Potential harm from ionizing radiation has led to the development of guidelines to protect patients and practitioners from unnecessary radiation exposure; however, these guidelines may or may not be followed in practice. Objective: This study surveyed U.S. dental hygienists with regard to radiology policies in the workplace. Methods: The survey, consisting of 62 knowledge and practice items regarding use of dental radiography, was based on the 2012 publication by the American Dental Association (ADA) and the U.S. Food and Drug Administration (FDA): “Dental Radiographic Examinations: Recommendations for Patient Selection & Limiting Radiation Exposure.” The study was granted exempt status by the Texas A&M University Baylor College of Dentistry (TAMU-BCD) institutional review board. The survey link was emailed to 10,000 subscribers of the