Table 2. Differential Diagnosis between Milder
Forms of Dental Fluorosis (Questionable, Very Mild, And Mild) and
Nonfluoride Opacities of Enamel.
| Characteristic |
Milder Forms of Fluorosis |
Nonfluoride Enamel Opacities |
| Area affected |
Usually seen on or near tips of cusps or incisal edges. |
Usually centered in smooth surface; may affect entire
crown. |
| Shape of lesion |
Resembles line shading in pencil sketch; lines follow
incremental lines in enamel, form irregular caps on cusps. |
Often round or oval. |
| Demarcation |
Shades off imperceptibly into surrounding normal enamel. |
Clearly differentiated from adjacent normal enamel. |
| Color |
Slightly more opaque than normal enamel; paper-white.
Incisal edges, tips of cusps may have frosted appearance. Does not show
stain at time of eruption (in these milder degrees, rarely at any time).
|
Usually pigmented at time of eruption often creamy-yellow
to dark reddish-orange. |
| Teeth Affected |
Most frequent on teeth that calcify slowly
(cuspids (canines), bicuspids (premolars), second and third
molars). Rare on mandibular incisors. Usually seen on six or
eight homologous teeth. Extremely rare in deciduous teeth. |
Any tooth may be affected. Frequent on labial
surfaces of mandibular incisors. May occur singlely. Usually
one to three teeth affected. Common in deciduous teeth. |
| Gross hypoplasia |
None. Pitting of enamel does not occur in the milder
forms. Enamel surface has glazed appearance, is smooth to point of explorer.
|
Absent to severe. Enamel surface may seem etched, be
rough to explorer. |
| Detection |
Often invisible under strong light; most easily detected
by line of sight tangential to tooth crown. |
Seen most easily under strong light on line of sight
perpendicular to tooth surface. |
Russell AL. The differential diagnosis of fluoride and nonfluoride
enamel opacities. J Public Health Dent 1961;21:143-6.
|