Inhibition of apoptosis in early tooth development alters tooth shape and size.

Abstract:

:Apoptosis plays important roles in various stages of organogenesis. In this study, we hypothesized that apoptosis would play an important role in tooth morphogenesis. We examined the role of apoptosis in early tooth development by using a caspase inhibitor, z-VAD-fmk, concomitant with in vitro organ culture and tooth germ transplantation into the kidney capsule. Inhibition of apoptosis at the early cap stage did not disrupt the cell proliferation level when compared with controls. However, the macroscopic morphology of mice molar teeth exhibited dramatic alterations after the inhibition of apoptosis. Crown height was reduced, and mesiodistal diameter was increased in a concentration-dependent manner with z-VAD-fmk treatment. Overall, apoptosis in the enamel knot would be necessary for the proper formation of molar teeth, including appropriate shape and size.

journal_name

J Dent Res

authors

Kim JY,Cha YG,Cho SW,Kim EJ,Lee MJ,Lee JM,Cai J,Ohshima H,Jung HS

doi

10.1177/154405910608500610

subject

Has Abstract

pub_date

2006-06-01 00:00:00

pages

530-5

issue

6

eissn

0022-0345

issn

1544-0591

pii

85/6/530

journal_volume

85

pub_type

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