Abstract
We studied quantitatively differences in consistency of normal gingiva, gingiva affected with squamous cell carcinoma, and that with leukoplakia to evaluate its potential for the preoperative diagnosis of gingival carcinoma. Twenty-nine patients with gingival squamous cell carcinoma, 24 with leukoplakia, and 120 with normal gingiva were examined using an instrument capable of measuring consistency as a function of the load (in grams) needed to displace gingiva by 1.0mm by a probe 1.0mm in diameter. The mean values of consistency in normal gingiva were 67.9±4.8g, 68.1±4.3g, 59.7±4.6g, and 67.4±4.2g, corresponding to the maxillary labial, maxillary buccal, mandibular labial, and mandibular buccal, respectively. The mean value of consistency in gingival carcinoma and leukoplakia was 24.5±3.3g, and 52.4±7.1g, respectively. Differences in consistency among gingival carcinoma, leukoplakia, and normal gingiva were significant (p<0.001). It was concluded that the consistency in gingival lesions was objectively and quantitatively evaluated by this instrument.
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