Sibling Similarities in Dental Development

Age estimation charts for a modern Australian population

“…It has been estimated that the contribution of genetic control over the rate of dental development is as much as 90% [10][11][12]. The timing of the emergence of deciduous incisors has also been shown to be under strong genetic control [13].…”

“…Consistent with other body systems, variation in dental development increases with increasing age. The early developmental stages of early forming teeth are notably less variable than the later developmental stages of the later forming teeth [10,16], thus with increasing age, the range of variation for age estimation must also rise.…”

Radiographic Study of the Calcification and Eruption of the Permanent Teeth in Inuit and Indian Children

“…Garn et al ( 1958) give mean ages of alveolar emergence fon the first and second molars and bhe first and second prenolars, in their work on the sex difference in toobh calcification. Lewis and Garn (1960) lÍkewise vÍew alveolar emergence as one st,age of dental development but estimate no mean ages. Fanning (1961) notes bhaü bhe root of the first nolar is about 1/J complete at the time the tooth penetrates the alveolar bone.…”

“…However, calcification is observed by Denisch and f,rartman (1956) Lauterstein (1961:164) found that there was rran intimate developmental relatÍonship between root age and bone agerr wíbh a rank order corelation as high as 0.437. InvestigaüÍng the relationship between booth formabion and other maturational factors, Lewis and Garn ( 1960) Nanda (1960) who found only a low eorrelat,ion between the age at conplete emergence of the permanent dentit,ion, the age at the maximun rate of the circumpubertal growth spurt in height in both sexes, and the age at menarche in gÍnls. Moorrees et al (1963) (Catlell, 1928;Hellman, 1943;Clements et al, 1953a;Hurne, 1948Hurne, , 1949 (Hurme, 1949; CLenents et al ", 1953a;Dahlberg and Menegaz-Bock, 1958;Caru, 1962 (Cattelt, 1928;Hellnan, 1943;Hurne, 1948Hurne, , 1949Adler, 1958;Magnusson, 1976).…”

Mesial Migration Effect on Root Morphology of Mandibular Third Molars

“…3 Although many studies have described the effect of genetic factors on dental development, [4][5][6] it is not clear whether the angulation of the roots is related to genetic disorders or whether it has multiple causes, including environmentally acquired conditions such as infection, trauma, scar formation, orthodontic treatment, inadequate space, or tooth migration during tooth formation. 2,[7][8][9][10] .…”