Distortions in denta–scan tomography
Abstract
One of the methods of image diagnosis in implantology is the computed axial tomography, the reference plane used to carry out the study is the Horizontal Plane that is taken parallel to the roof of the palatine vault. Instead, the surgical reference is the Oclusal Plane (Prothetic Camper Plane). Then, if we changed the reference used in the tomography, to the Occlusion Plane, we could have a realer image of the bone. To carry out the experience, 15 maxillary superior toothless skulls were selected, those had belonged to mature people that had lost their jag pieces prior to their decease. To each one of them, they were made a wax bun, with the Plane Oclusal reference (Cámper Prothetic Plane), and they were placed a witness implants of10 mmx3.3 mm. To each skull they were taken two tomography, one with the conventional technique and another using the Cámper Prothetic Plane. The tomography used was the helical type, Philips trademark MX8000 with courts of1.3 mmeach 0.6mm. To be able to carry out the comparative measurement between one and another technique, it was used a caliper trademark VIS (made in Poland). The results obtained with each technique and each samples were evaluated. One could observe that speaking in percentage, the standard technique (Horizontal) showed a magnification of 19.20% with regard to the technique in study (Oclusal), that showed a 16.5% magnification. The study showed distortions with regard to the real measures of the witness. These distortions were minimized for the case of the Oclusal Technique but none of them gave with the absolute representative of the patron measure.
Keywords: tomography, prothesis, oclusal plane, implant.
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References
Batista FC, Batista J, Eraldo L, Rodrigues FB. (1999).O uso da tomografia computadorizada na implantodontia / Applications of computed tomography in implantology BCI;6(1):65-71, jan.-mar.
Bellota AR. (1999). Incógnitas Biológicas de un Implantólogo Imaginario. Edit. Del Instituto Salesiano de Artes Gráficas. Argentina. pp. 61-65.
Calgaro A, Bison L, Bellis GB, Pozzi Mucelli R. (1999). Dentascan computed tomography of the mandibula r incisive canal. Its radiologic anatomy and the therapeutic implications. Istituto di Radiologia, Universita degli Studi, Trieste, TS. Radiol Med (Torino) Nov;98(5):337-341.
Cavalcanti MG, Yang J, Ruprecht A, Vannier MW. (1999). Accurate linear measurements in the anterior maxilla u sing orthoradially reformatted spiral computed tomography. Department of Radiology, Faculty of Odontology, University of Sao Paulo, Brazil. Dentomaxillofac Radiol May; 28(3):137-140.
Cucchiarelli D. (1996).La Precisión en el Ajuste Marginal. Tesis de Doctorado. F.O.L.P. U.N.L.P.
Drücke W, Klemt B. (1991). Bases de la Prótesis Dental Total. Edición Española. Barcelona. pp. 257-260.
Giannì E. (1989). La Nueva Ortognatodoncia. Piccin Nuova Libraria S.p.A., Padova, Italia.
Jacobs R, Adriansens A, Naert I, Quirynen M, Hermans R, Van Steenberghe D. (1999).Predictability of reformatted computed tomography for pre-operative planning of endosseous implants. Department Periodontology, Catholic University of Leuven, Belgium. Dentomaxillofac Radiol Jan;28(1):37-41.
James J, Abrahams MD. (2001). Dental Ct Imaging: A Look at the Jaw. From the Department of Diagnostic Radiology, Yale University School of Medicine. Radiology; 219:334-335.
Jeffcoat M. (1999). Periodontitis induced alveolar bone loss and its treatments in Favus MJ (ed) Primer on the metabolic bone diseases and disorders of mineral metabolism; Lippincott Williams & Wilkins, Philadelphia.
Junqueira LC, Carneiro J. (1987). Histología Bá sica. Tercera Edición. Salvat Editores, Barcelona, España.
Kohavi D, Bar-Ziv J, Marmary Y. (1997). Effect of axial plane desviation on cross-sectional height in reformatted computed tomagraphy pf the mandible. Dentomaxillofac. Radiol. May; 26(3):189-191.
Listgarten MA. (1996). Soft and hard tissue response to endosseous dental implants. Anatomical Rec. 245:410-425.
Solar P, Gahleitner A. (1999. Dental CT in the planning of surgical procedures. Its significance in the oro-maxillofacial region from the viewpoint of the dentist. Abteilung fur Orale Chirurgie, Universitatsklinik fur Zahn-, Mund- und Kieferheilkunde Wien. Radiologe Dec;39(12):1051-1063.
Thunthy KH. (2000). Interrelationship between cross-sectional and sagittal imaging in computer-assisted dental implant tomography. Department of Oral Diagnosis, Medicine and Radiology, School of Dentistry, Louisiana State University, Dentomaxillofac Radiol Mar;29(2):65-69.
Truhler RS, Orenstein IH, Morris HF, Ochis S. (1997). Distribution of bone quality in patients receiving endosseous dental implants; J. Oral Maxilofac. Surg. 55:38-45.
Yelin GE. (1999). La tomografía Helicoida l Computada y su Rol en la Implantología Dental (Denta-Scan). Revista del Círculo Odontológico de Rosa rio. Volumen 65.1.Diciembre. pp.10-16.
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