11. The trabecular dentine contains a large number of fibres in the dorsal half of the spine. 12. :: : Chewing anti-nicotine gum for a prolonged period caused me to lose dentine . 13. The dentine is composed of two types : primary dentine and secondary dentine ( often called osteodentine ). 14. The dentine is composed of two types : primary dentine and secondary dentine ( often called osteodentine ). 15. The dentine is composed of two types : primary dentine and secondary dentine ( often called osteodentine ). 16. It is thought that excessive removal of dentine during procedures such as root canal treatment weakens the tooth. 17. You might cause abrasion or attrition of the enamel instead thus exposing the sensitive dentine to your oral environment. 18. The hypochlorite dissolves the decayed dentine , while the amino acids act as a buffer, preventing damage to healthy tissue. 19. The base and crown of these are composed of dentine separated by an uncalcified layer and they are replaced at intervals. 20. Within each row, the long axis of the enamel rod generally is perpendicular to the underlying enamel-dentine junction.
