Oral Surgery, Oral Medicine, Oral Pathology最新文献

A new method for analyzing diagnostic accuracy is introduced. A diagnostic accuracy curve may be obtained by plotting receiver operating characteristic analysis data, P(A), as a function of exposure. By means of diagnostic accuracy curves the effects on diagnostic accuracy of tube potential, exposure, and size of carious lesions was studied. It was found that the effect of the tube potential on the accuracy of caries diagnosis is negligible. About 25% of the variation in diagnostic accuracy depends on the exposure and about 80% on lesion depth. With the lesion depth constant, about 75% of the variance in diagnostic accuracy depended on observer performance. The peak of a diagnostic accuracy curve indicates optimum performance. This is found at an exposure that gives a radiographic density of about 1 in enamel and dentin although the tolerable exposure increases with increased lesion depth.

A Brazilian family with hereditary gingival fibromatosis is described with multiple affected subjects in four generations. A total of 50 (48%), of 105 at-risk offspring in a family of 132 members were affected, consistent with an autosomal dominant mode of inheritance. This family appears to represent the largest pedigree with this condition reported in the literature.

A case of proliferative myositis arising in the tongue is described. Light and electron micrographs revealed the characteristic infiltrative growth pattern and cellular pleomorphism of this lesion. A review of the literature disclosed 50 reported cases of proliferative myositis, including 10 that originated in the head and neck. The rapid growth rate and unusual gross and histologic appearance of this infiltrative lesion have contributed to its relatively frequent misdiagnosis and inappropriate treatment. Consequently it is hoped that this report will help clarify its benign nature.

The present study examines interpretations of subtraction images of pairs of radiographs taken at 0 degrees, 1 degree, or 2 degrees of angle discrepancy. The radiographs were taken at each of 48 alveolar crestal sites on 15 dried human skulls. Computer-simulated lesions were induced at the sites on three fourths of the radiographs. Ten instructed dentists were asked to interpret the subtraction images as to the presence or absence of crestal change. A 2-degree angle discrepancy between radiographs resulted in a significant difference in sensitivity from that of radiographic pairs with a 0-degree discrepancy. However, we found no significant difference in sensitivity between 1-degree and 0-degree pairs of radiographs. In conclusion, a 1-degree geometric difference between pairs of radiographs does not significantly contribute to errors in interpretation of subsequent subtraction images.

Forty-nine patients with burning mouth syndrome were simultaneously evaluated through a psychiatric interview and a psychopathologic questionnaire (SCL-90). The same protocol was applied to a control group (n = 47) free of oral complaints and with a similar age and sex distribution. The subgroup with burning mouth syndrome and associated psychiatric disorders differed from the subgroup of patients without psychiatric disorders in that the former exhibited significantly more symptoms of anxiety, depression, obsession, somatization, and hostility. This latter parameter appears to be present particularly among depressed persons. No significant psychopathologic differences were observed between the subgroup with BMS who exhibited no psychiatric disorders and the controls who were free of oral disorders.

A case of diffuse, recurrent, suppurative sialadenitis and sialodochitis is presented. I believe this entity to be analagous to cheilitis glandularis and propose the name suppurative stomatitis glandularis.

A southeastern dental educational institution formalized a Percutaneous and Mucous Membrane Exposure Protocol in 1990. This article outlines the development, implementation, and administration of the protocol including risk assessment and rationale for testing health care workers and source persons. Pretest and posttest counseling for HIV testing is also discussed.

Ten temporomandibular joints with the closed lock in 10 patients who were successfully treated clinically nonsurgically with the occlusal splint, were studied with magnetic resonance imaging. In all patients, the pretreatment images of temporomandibular joints showed anteriorly dislocated disks that failed to recapture together with various changes in disk morphology. Three to four months after the treatment, all patients could open their mouths more than 47 mm at the incisor position and were asymptomatic. But the follow-up magnetic resonance images showed that the disks were still anteriorly displaced and deformed and their relationships with the condyles were unchanged. The reestablishment of mouth opening appeared to occur not by recapturing of the disks but by improvement in condylar mobility and the adaptation of the posterior attachment.