megadontiaとは 意味・読み方・使い方

名詞

megadontia (uncountable)

1. Malformation of megalodontia
2. (pathology, dentistry) Macrodontia.
   • 2008, R. A. Cawson; E. W. Odell, Cawson's Essentials of Oral Pathology and Oral Medicine, 8th edition, Edinburgh: Churchill Livingstone, page 22:

     Dens in dente, peg-shaped lateral incisors, microdontia, megadontia, fusion, gemination and connation, talon cusp, taurodontism, etc. Recognised by their appearance

   • 2012, P. J. M. Crawford; M. J. Aldred, “Anomalies of tooth formation and eruption”, in Richard Welbury; Monty S. Duggal; Marie Thérèse Hosey, editors, Paediatric Dentistry, 4th edition, Oxford: Oxford University Press, page 257:

     Isolated megadontia in the permanent dentition has been estimated to occur in approximately 1% of patients. The condition may be symmetrical. Generalized megadontia has been reported in association with pituitary gigantism, unilateral facial hyperplasia, and hereditary gingival fibromatosis.

   • 2014, AH Brook; J Jernvall; RN Smith; TE Hughes; GC Townsend, “The dentition: the outcomes of morphogenesis leading to variations of tooth number, size and shape”, in Australian Dental Journal, volume 59, number s1, page 136:

     With the thresholds added on the curves it also accounts for the higher prevalences of hypodontia and microdontia in females and the higher prevalences of megadontia and supernumeraries in males.