[Roentgenographic evidences of condensing osteitis caused by periodontal disease (author's transl)].

The increased radiopacity of localized areas relating to the dental disease are often encountered in dental roentgenogram. Condensing osteitis is the representative lesion of this kind of radiopaque area.There are several indications suggesting the presence of condensing osteitis caused by the periodontal disease, however, there is no controlled study supporting the scientific evidences of this suggestion.Full mouth dental X-ray films taken from 408 subjects (male 155 & female 253) between the age of 13-76 comprised the material. Condensing osteitis was classified according to the possible etiologic factors. Condensing osteitis was found in 25.7% of the subjects examined. The incidense of condensing osteitis seems to increase as the age become higher. Condensing osteitis was most frequently observed at the mandibular molar area regardless of their etiologic factors. Surprisingly high rate of emergence (34.9%) was observed for the condensing osteitis caused by periodontal disease, on the other hand, the condensing osteitis related to periapical lesion occupied 33.9% of all condensing osteitis. The sujects with condensing osteitis caused by periodontal disease have found to show high alveolar Bone Count indicating higher alveolar bone destruction.