History of Dental Radiography PDF

HISTORY OF Christian M. DENTAL RADIOGRAPHY Beltran, DDM Objectives: ❖ State when x-rays were discovered and by whom ❖ Trace the history of radiography, noting the prominent contributors ❖ List two historical developments that made dental x-ray machines safer....

HISTORY OF Christian M. DENTAL RADIOGRAPHY Beltran, DDM Objectives: ❖ State when x-rays were discovered and by whom ❖ Trace the history of radiography, noting the prominent contributors ❖ List two historical developments that made dental x-ray machines safer. BELTRAN, C.M... How was X-ray Discovered? BELTRAN, C.M. Discovery of the x-ray ❖ Professor Wilhelm Conrad Roentgen (pronounced as ‘rent’ ‘gun’ ❖ Experimented in Bavaria (Germany) on November 8, 189 ❖ Experiment with a vacuum tube called Crooke’s tub ❖ Observed that a uorescent screen near the tube began to glow when the tube was activated by passing an electric current through it. BELTRAN, C.M. e fl ) 5 BELTRAN, C.M. Discovery of the x-ray ❖ P r o f e s s o r Wi l h e l m C o n r a d Roentge ❖ He was not certain on the nature of this invisible ray that he had discovered so he spoke of it as X-ray (x represents unknown ❖ Fellow scientists honored him by calling the invisible ray the ROENTGEN RAY and the image produced on photosensitive lm a ROENTGENOGRAPH. BELTRAN, C.M. n fi ) Discovery of the x-ray ❖ Professor Wilhelm Conrad Roentge ❖ Since a photographic negative and the x-ray lm have basic similarity and the x-ray closely resembles the radio wave, the pre x- radio and the suf x- graph have been combined into RADIOGRAPH. BELTRAN, C.M. n fi fi fi  Important Scientists and Researchers ❖ Dr. Friedrich Otto Walkhof ❖ German physicist, the rst to expose a prototype of a dental radiograph ❖ Accomplished by covering a small, glass photographic plate with black paper to protect it from light and then wrapping it in a sheath of thin rubber to prevent moisture damage during the 25 minutes that he held the lm in his mouth. BELTRAN, C.M.. fi f fi Important Scientists and Researchers ❖ Dr. William H. Rollins ❖ “dentistry’s forgotten man ❖ While working with x-rays in 1898, he suffered severe burns to his hand ❖ The rst advocate for the science of radiation protection. “father of radiation protection” BELTRAN, C.M. fi. ” Important Scientists and Researchers ❖ Dr. William J. Morton ❖ Known to have taken radiograph on skulls very early. The rst to discover impacted teeth radiographically. BELTRAN, C.M. fi Important Scientists and Researchers ❖ Dr. Charles Edmund Kells Jr. ❖ The rst to put the radiograph to practical use in dentistry. BELTRAN, C.M. fi Important Scientists and Researchers ❖ Dr. William D. Coolidg ❖ Ame r i ca n p h y s i c i s t a n d engineer who worked for the General Electric Compan ❖ Introduced the hot cathode tube (Coolidge tube) BELTRAN, C.M. e y Important Scientists and Researchers ❖ Dr. Howard R. Rape ❖ First dental educator to hold the title of “Professor of Radiology ❖ Wrote the rst dental radiology textbook (Elementary and Dental Radiology) ❖ Introduced bitewing radiographs in 1925 BELTRAN, C.M. fi ”. r Important Scientists and Researchers ❖ Gordon Fitzgeral ❖ He introduced the long cone paralleling technique in 194 ❖ Franklin McCormac ❖ He was the rst to put the paralleling technique into use in intraoral dental radiography. BELTRAN, C.M. fi d k 7 Important Scientists and Researchers ❖ Weston Pric ❖ He developed the Bisecting Angle technique in 1904 BELTRAN, C.M. e  Reference: ❖ Mallya S. and Lam, E. (2018). White and Pharoah’s Oral Radiology Principles and Interpretation. (8th ed.). Missouri: Mosby Elsevier Inc ❖ Pramod, John R. (2011). Textbook of Dental Radiology (2nd ed.) St. Louis, USA: Jaypee Brothers Medical Publisher ❖ Thomson, E. Johnson, O. (2012). Essentials of Dental Radiography for Dental Assistants and Hygienists (9th Edition). Pearson Education Inc. BELTRAN, C.M. s. Thank you!