Tooth size changes with age in a Spanish population: Percentile tables

Abstract

Objectives: The aims of this work were: firstly, to draw up tables of percentile tooth sizes similar to those of Sanin and Savara for three age groups of a Spanish population; secondly, to describe changes in tooth size between those groups over time, as well as observing any sexual dimorphism and, finally, to compare both the Spanish and Sanin and Savara's American population samples. Material and methods: The sample included 359 patients and was divided into three age groups: adolescents, young adults and adults, of both genders. After dental cast digitalization, mesiodistal tooth-size was measured on each dental cast using a digital method. Dental size tables organized by percentiles for each group of age and gender were drawn up. Percentiles under 30 were considered as small, between 30 and 70 as average, and above 70 as large. As symmetry was found between contralateral teeth, the mean between the teeth of the two semi-arches was considered. Results: The mesiodistal tooth sizes of adolescents did not present statistically significant differences between genders, in contrast to the two other age groups. Conclusions: Mesiodistal tooth diameters tended to diminish with age, especially in women, in the Spanish population. The values obtained for our dental tables, organized by percentiles, were slightly higher than those found by Sanin and Savara in an American population, especially for women.

Maturational changes of the normal occlusion: A 40-year follow-up

“…A significant reduction in the mesiodistal tooth size was observed over the 47year follow-up (Table IV), corroborating previous studies that reported an interproximal wear and reduction in the tooth size. 15,16,34 However, no study followed untreated individuals with a normal occlusion. A mean reduction of 0.35 mm in the mesiodistal tooth size was found in the present study from 13 to 60 years.…”

“…14 Decrease in the mesiodistal tooth size as a result of interproximal attrition with age was previously described. [14][15][16] Begg reported a 10.5 mm mesiodistal tooth wear in the lower arch in primitive Australian aborigines. 15,17 A mean reduction of 0.15 and 0.32 mm per tooth was described from adolescence to 50 years of age in modern civilization.…”

“…15,17 A mean reduction of 0.15 and 0.32 mm per tooth was described from adolescence to 50 years of age in modern civilization. 16 Changes in tooth size and clinical crown length with age were not evaluated in individuals with normal occlusion and might influence the arch dimensions and the smile esthetics. 18 From April of 2015 to May of 2016, the sample was recalled and dental models were performed (T3).…”

Dimensions of central incisors, canines, and first molars in subjects with Down syndrome measured on cone-beam computed tomographs

“…39 Some authors have reported that sexual dimorphism is significant in adults but not in adolescents, and age would therefore appear to be a relevant factor for establishing the sex discrimination potential of teeth. 40 The delay in tooth maturation and eruption described in DS allows us to speculate that tooth size could increase with age; however, paradoxically, we observed progressive reductions in tooth sizes in the DS group, due mainly to reductions in crown height and mesiodistal diameter. It has been suggested that dental wear facets could be a predictive sign for the identification of persons with DS, corroborating the idea that a common consequence of clenching or grinding the teeth is their generalized wear.…”

Comparison of microesthetic patterns in normal occlusion in relation to class I malocclusion treated with extractions of four premolars

“…However it has been reported that this variable only showed significantly changes in the late growth period (40 th decade of life), while no significant effects has been reported in young adults. 26,37 Since patients in this study were young adults, influence of sex could not be expected.…”