. Elementary and dental radiography / by Howard Riley Raper . ht swelling and an annoying painwould last for a few days, then disappear for a month or so. There wasno discharging sinus. The first molar bore a gold shell crown, the secondbicuspid held a large mesio-occluso-distal amalgam filling, and the firstbicuspid had a small filling of amalgam in the occlusal surface. Thethree teeth—the first molar and the two bicuspids—were isolated one at a 182 DENTAL RADIOGRAPHY time and tested with cold water. The patient was uncertain as to whetherhe received any sensation when the cold was applied to
. Elementary and dental radiography / by Howard Riley Raper . ht swelling and an annoying painwould last for a few days, then disappear for a month or so. There wasno discharging sinus. The first molar bore a gold shell crown, the secondbicuspid held a large mesio-occluso-distal amalgam filling, and the firstbicuspid had a small filling of amalgam in the occlusal surface. Thethree teeth—the first molar and the two bicuspids—were isolated one at a 182 DENTAL RADIOGRAPHY time and tested with cold water. The patient was uncertain as to whetherhe received any sensation when the cold was applied to the shell-crownedmolar, but thought that he did. The second bicuspid responded well, andthe first bicuspid did not respond at all. This seemed to indicate a vitalpulp in the mola* and second bicuspid, and a devitalized one in the firstbicuspid. But, when looking for a dead pulp, one would naturally sus-pect either the molar with the shell crown, or the second bicuspid withthe large filling, instead of the first bicuspid with the small occlusal Fig. 182. The roots of the shell crowned first molar are not properly filled. Only the upper third of the distal canal is filled and the mesial canals are not filled at all. The tooth was sore and caused annoying neuralgic pains. The temperature test is a valuable one, but it cannot be depended uponabsolutely. A radiograph (Fig. 180) was made. It shows the canals ofthe molar and second bicuspid unfilled. The tissues at the apices of theroots of these teeth are healthy, which, together with the positive reactionto the cold tests indicates that their pulps are vital and healthy. Thesimple occlusal filling in the first bicuspid enters the pulp chamber slightly,the canals of the tooth are unfilled, and the light area at the apex of theroot indicates disease (inflammation) of the bone in that region. Thesethings, together with the fact that the tooth did not react to the cold test,indicate a putrescent pulp in the first bicuspid
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