Fig. 6.

Morphologic changes of teeth under development six weeks after 5 × 15 Gy radiotherapy. H&E stained sections of developing teeth of non-irradiated control rats (A, a) and 5 × 15 Gy irradiated rats (B, b). The histologic examination demonstrates disturbed enamel, dentin and cementum formation after irradiation, as seen from the overview section B) compared to A). Scale bar indicates 1 mm. Furthermore, disturbed and unorganized dentin formation and necrosis of odontoblasts and pulp was evident after irradiation, as seen from the close up section b) compared to a). Scale bar indicates 100 μm