[The embryological development of the nerve fibers of the tooth. An analysis of their formation and development correlated with the different evolutionary stages of the dental structures].
In this review the research on the growth and development of nerve fibers in the dental pulp have been summarized. The first part present the distribution, type, morphology and way of impulse transmission as well as the role of the pulpal nerves. The second part present the growth of the nerve fibers in the dental structures. Through the analysis of all the research done on this subjects two important thighs can be deduced: the developing innervation correlates with the stage of the development of individual teeth rather than the chronological age of the animal, and the dental pulp compared to other structures is relatively late in maturing. This is why the axons don't penetrate into the dental papilla until crown formation commences. Then the probable role of the pulpal nerves in tooth growth (dentinogenesis) has been analysed, but this activity, even though unessential, is evident only in developing final phases and not in the early ones; this is why the axons are separated from the early growing tissues. Concluding, our review shows the variation in number, type and function of the pulpal nerves from their developing period to their complete formation until senescence.
Fanali
S
S
Facoltà di Medicina e Chirurgia, Corso di Laurea in Medicina e Chirurgia, Università degli Studi G. D'Annuzio Chieti.
Rametta
D
D
Di Vincenzo
F
F
D003782:Dental Pulp / Q000196:embryology / Q000294:innervation*; D006801:Humans; D009412:Nerve Fibers / Q000648:ultrastructure*; D009413:Nerve Fibers, Myelinated / Q000648:ultrastructure*; D009805:Odontogenesis; D014083:Tooth Germ / Q000196:embryology
Lo sviluppo embriologico delle fibre nervose del dente. Analisi della loro formazione e sviluppo correlata ai vari stadi di evoluzione delle strutture dentarie.