Linear arch dimension and tooth size

Carey, C.W.

doi:10.1016/0002-9416(49)90148-7

Cited by 67 publications

(16 citation statements)

References 4 publications

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“…[12] A significant linear correlation between ∑I and the maxillary and mandibular ∑CPP has been recognized since 1949. [18] Subsequently, a number of linear regression equations have been advocated for different populations. [5161920]…”

Section: Discussionmentioning

confidence: 99%

Mixed dentition analysis in Libyan schoolchildren

2013

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Objectives:The primary aim of the present study was to assess the applicability of Tanaka and Johnston and Moyers’ methods of prediction in Libyan subjects and secondary aim was to develop a new prediction method for the examined population if required.Materials and Methods:The study sample comprised 343 Libyan schoolchildren with age ranged from 12 to 17 years; 169 males age matched with 174 females, all with no craniofacial abnormalities and orthodontically untreated. The mesiodistal (MD) tooth widths were measured and compared with the estimated values derived from Tanaka and Johnston equations and from Moyers’ probability tables at 35%, 50% and 75% respectively using Paired t-tests. The constants a and b in the linear regression equation (y = a + bx), the correlation coefficient, the coefficient of determination and the standard errors of estimate were computed.Results:Significant sexual dimorphism in lower incisors mesiodistal width was observed. There were significant discrepancies between the current measurements and those estimated from Tanaka and Johnston's equation and Moyers’ tables. New linear regression equations were derived for both sexes to allow precise prediction for Libyan subjects. The correlation coefficients between the total MD width of the mandibular permanent incisors and that of the maxillary and mandibular canines and premolars were found to be 0.66 and 0.68 for males and 0.57 and 0.58 in females, respectively.Conclusions:It appears that there is a limitation in the application of Tanaka and Johnston's equation and Moyers’ methods to Libyan subjects. The developed prediction equation is more accurate for predicting the MD widths of unerupted canine and premolars of Libyan population.

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Section: Discussionmentioning

confidence: 99%

Mixed dentition analysis in Libyan schoolchildren

2013

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“…The degree of mandibular crowding was measured using Carey's analysis. 6,7 Gender was not equally distributed, with 44 women and 17 men. Patients were distributed into one of three groups as mild (20), moderate (22), or severe (19).…”

Section: Methodsmentioning

confidence: 99%

Changes in mandibular incisor position and arch form resulting from Invisalign correction of the crowded dentition treated nonextraction

Duncan

Piedade

Lekic

et al. 2015

The Angle Orthodontist

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“…Arch perimeter analysis[28] and Carey's analysis[29] were conducted on both the maxillary and mandibular dental arches, respectively. A brass wire (diameter 0.25 mm) was used to compute the arch perimeter.…”

Section: Methodsmentioning

confidence: 99%

An odontometric study of tooth size in normal, crowded and spaced dentitions

Bugaighis

Elorfi

2013

J Orthodont Sci

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Objective:To assess the mesio-distal tooth width in normal, crowded, or spaced dentitions.Materials and Methods:A sample of 192 maxillary and mandibular dental casts of Libyan subjects was selected from a larger cohort. These subjects did not present with craniofacial anomaly, hypodontia, significant attrition, caries, restorations, or history of permanent tooth extraction or orthodontic treatment. The sample was divided into normal, crowded, and spaced groups according to tooth size/arch length discrepancy. Each group included 32 upper and lower dental casts with equal numbers of males (mean (SD) age = 14.7 (1.9) years) and females (mean (SD) age = 15.7 (2.5) years). The mesiodistal (MD) tooth width, sum of the MD tooth widths mesial to the first molars (TTM), sum of the MD width of the four incisors (I), and the sum of the MD width of canine and first and second premolars (CPP) were calculated for each group. The independent Student t-test was applied sequentially to detect significant differences between paired groups. The ANOVA test was undertaken to explore significant differences between the three groups. Pearson coefficient of correlation was used to evaluate the correlation between I and the corresponding CPP in maxillary and mandibular arches.Results:MD tooth width, TTM, I, and CPP were significantly wider in the crowded compared to normal and spaced dentitions (P<0.001), except for the width of the upper left lateral incisors in both normal and crowded groups. Although there was a trend for smaller tooth widths in spaced dentitions compared to normal ones, this was only significant in the maxillary left central incisor, maxillary right and left lateral incisors, maxillary right first premolar, mandibular right lateral incisor, and mandibular right canine (P<0.05). However, the maxillary TTM, I, and CPP in the normal group were significantly greater than in the spaced group (P<0.05). Significant positive correlations existed between the mean values of I and CPP in both the maxillary and mandibular dentitions of all groups (P<0.01).Conclusions:It appears that in the studied Libyan population, the MD tooth width is a significant component of crowding/spacing.

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Linear arch dimension and tooth size

Cited by 67 publications

References 4 publications

Mixed dentition analysis in Libyan schoolchildren

Mixed dentition analysis in Libyan schoolchildren

Changes in mandibular incisor position and arch form resulting from Invisalign correction of the crowded dentition treated nonextraction

An odontometric study of tooth size in normal, crowded and spaced dentitions

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