The
Knapp Study, 1971
Prevalence rates (per 1,000 persons) for oral mucosal
lesions found in
clinical exams
of 181,338 Army recruits,
predominantly men 18-22 years of age.
|
Clinical Diagnosis |
# Lesions |
# Lesions/1,000 Persons |
|
Papillary hyperplasia |
1292 |
7.12 |
|
Papilloma |
405 |
2.23 |
|
Irritation fibroma |
216 |
1.19 |
|
Other, includes 49 different diagnoses |
111 |
0.61 |
|
Inflammatory ulcer |
87 |
0.48 |
|
Epulis fissuratum |
67 |
0.37 |
|
Oral tonsils, hyperplastic (lingual & other) |
48 |
0.26 |
|
Mucocele |
44 |
0.24 |
|
Leukoplakia |
37 |
0.20 |
|
Frictional keratosis (cheek bite) |
34 |
0.19 |
|
Verruca vulgaris |
22 |
0.12 |
|
Hemangioma |
21 |
0.12 |
|
Pyogenic granuloma |
15 |
0.08 |
|
Lichen planus |
13 |
0.07 |
|
Dental fistula |
13 |
0.07 |
|
Geographic tongue |
12 |
0.07 |
|
Median rhomboid glossitis |
12 |
0.07 |
|
Amalgam tattoo |
10 |
0.06 |
|
Hairy tongue (black) |
6 |
0.03 |
|
Erythema multiforme |
6 |
0.03 |
|
Angular cheilitis |
4 |
0.02 |
|
Smokeless tobacco keratosis |
4 |
0.02 |
|
Nicotine palatinus |
2 |
0.01 |
|
White sponge nevus |
2 |
0.01 |
|
Candidiasis |
2 |
0.01 |
|
Actinic cheilosis |
1 |
0.01 |
|
Darier's disease |
1 |
0.01 |
|
Mucoepidermoid carcinoma |
1 |
0.01 |
Knapp MJ. Oral disease in 181,338 consecutive oral examinations. J Amer Dent Assoc 1971; 83:1288-1293.