Fig. 5.

Bright field microscope photomicrographs showing loss of integrity of dentinal tubules at 96 days. Polarized microscopy photomicrographs of the same sections showing loss of stratification of birefringent colours, patchy and haphazard birefringence. Apple cider (A–D), vinegar (E–F), Coca–cola (G–H), red bull drink (I–J), mountain dew (K–L). No significant changes observed in tomato ketchup (m–n) and orange juice (O–P) which show good integrity of dentinal tubules and striae of Retzius with uniform and stratified distribution of birefringent colours.