A Study of the Microstructure of Mineralised Tissues in 50 Human Primary Teeth
Background: Mineralised hard tissues in human primary teeth have some peculiarities, in spite of similarities in permanent and primary teeth. Aims and Objectives: To analyse structural and histological features of mineralised tissues in human primary teeth and their correlation with single-rooted and multi-rooted teeth. Materials and Methods: Study comprises of 50 human primary non-carious teeth which were sectioned by ground technique into two samples from each tooth. Single rooted teeth were sectioned in facio-lingual direction and multi-rooted teeth in mesio-distal direction. Sectioned primary teeth were examined under light and polarised microscope to analyse mineralised microstructure in human primary teeth. Results: Tufts, spindles, lamellae were constantly present in dental samples. Low prevalence of Hunter Schreger bands was observed. Non-scalloped dentino-enamel junction and edge to edge cemento-enamel junction are commonly present in primary teeth. Interglobular dentin was not present in all primary teeth. Dead tracts were mainly observed in single-rooted teeth below areas of dental attrition. Areas of cellular and acellular cementum were observed in two dental types. Conclusion: Human primary teeth have some microstructural variation as compared to established structure of permanent teeth and are better observed in polarised microscopy.
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