Fallibility of Pont's index in a Bangladeshi population

Alam, Mohammad Khursheed; Purmal, Kathiravan; Begum, S; Saifuddin, Mohammed; Sikder, Md. Asaduzzaman

doi:10.1016/j.odw.2014.03.003

Cited by 8 publications

(11 citation statements)

References 11 publications

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“…It is suggested that some polygenetic inheritance controls the maxillary dimensions and the Pont's index may vary across different populations and races. [ 24 ] Such prediction index cannot be relied without consideration of extra oral features. As for the reliability of such analysis, investigations on innumerable racial groups considered their population craniofacial features too.…”

Section: Discussionmentioning

confidence: 99%

Cone-beam computed tomography evaluation of Pont′s index predictability for Malay population in orthodontics

et al. 2015

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Introduction:In orthodontic treatment, three-dimensional (3D) dental casts has a significant role in diagnosis and treatment planning. The aim of this study was to evaluate Pont's index predictability in orthodontics.Materials and Methods:Premolar arch width, molar arch width and mesiodistal width of the maxillary incisors were measured three-dimensionally to assess shape of dental arches. The data source was cone beam computed tomography (CBCT) high volumetric data acquisitions from Malay ethnic background. Arch widths were measured and recorded from 53 subjects (32 male and 21 female with the mean age, 25.81), both the maxillary and mandibular arches, to obtain CBCT high volumetric data. All measurements were obtained through CBCT Planmeca Romexis TM Software 2.3.1.R (Helsinki, Finland).Results:Pont's formula overestimated the upper and lower interpremolar distance, with mean differences of 8.35 ± 3 mm and 12.02 ± 3.20 mm, respectively. Furthermore, the formula overestimated the upper and lower intermolar distance, with mean differences of 7.87 ± 3 mm and 16.14 ± 5.86 mm, respectively.Conclusions:The results indicate that Pont's index is not practical for use with the Malaysian population since the index overestimated interpremolar and intermolar widths. This raises questions whether the index is a true predictor of arch width measurements.

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Section: Discussionmentioning

confidence: 99%

Cone-beam computed tomography evaluation of Pont′s index predictability for Malay population in orthodontics

et al. 2015

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“…Indices were based on mesiodistal incisors width was investigated on various populations around the globe with agreements and disagreements 19,21,22,[25][26][27][28][29][30][31] . Aimed at the successful orthodontic treatment the tooth size discrepancy should be evaluated before treatment 32) as the tooth size and arch dimension has sexual disparities 17,32 .…”

Section: Discussionmentioning

confidence: 99%

A New Anterior and Posterior Maxillary Expansion Index in Orthodontics via Digital Dental Models

Shahid

Alam

Khamis

et al. 2015

J. Hard Tissue Biology.

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The aim of this study was to determine the maxillary expansion index (MEI) for Pakistani population. Also to determine the sexual disparities in sum of incisors perimeter, arch width and expansion indices of maxillary arch. Hirox digital stereomicroscope was used for the fabrication of the digital models. The estimated sample size was 128 Pakistanis (64 females and 64 males; age range from18 -24 years). The perimeters of the maxillary permanent incisors, as well as intercanine, interpremolar, and intermolar arch widths, were measured on digital dental models. Significant sexual disparities were observed (***p < 0.001). There was significant difference observed in arch length and arch perimeter group of maxilla. For the prediction of ideal arch width in intercanine, interpremolar, and intermolar region to be achieved at the finishing stage, orthodontist can forecast the arch width before the initiation of orthodontic treatment. The new formula and the new indexes of arch width can be a helpful adjunct in the orthodontic treatment.

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“…6,20 • Mandibular interpremolar widths were measured between the buccal cusp tips. 13 • Mandibular intermolar widths were measured between the distal cusp tips. 13 Arch length, arch perimeter measurement and grouping 18,19 Arch length…”

Section: Arch Dimensions Measurementsmentioning

confidence: 99%

Application of Pont’s index to a Pakistani population: a digital stereomicroscopic study

Shahid

Alam

Khamis

et al. 2017

Australasian Orthodontic Journal

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To investigate the applicability of Pont's index for predicting maxillary and mandibular dental arch widths in a Pakistani population. Materials and methods: A Hirox digital stereomicroscope (SM) (HIROX KH7700 Japan) was used to construct digital models of fabricated plaster casts. Gender differences in the measured totals of the incisor widths, arch widths and expansion indices were evaluated. Pont's correlations were computed between measured and predicted arch widths. An analysis of variance (ANOVA) was applied to determine the differences between arch length and arch perimeter groups. Results: Males had significantly larger mean values for the sums of the incisors, arch widths and expansion indices compared with females (p ≤ 0.05). There were significant differences observed between the large and small, average and small and the average and large arch length groups (p ≤ 0.05) in the maxilla, while a significant difference was observed only between the large and small arch length groups in the mandibular arch. Pont's index predictions were consistently less than the actual interpremolar and intermolar arch widths for both genders. The dissimilarity in the predictions for interpremolar width averaged -4.33 mm for males and -4.21 mm for females while the intermolar width averages were -4.93 mm for males and -4.92 mm for females. Conclusion:The results indicated that Pont's index should not be applied to the Pakistani population. Maxillary and mandibular arch length groups and arch perimeters should be carefully investigated before applying any prediction formulae.

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Fallibility of Pont's index in a Bangladeshi population

Cited by 8 publications

References 11 publications

Cone-beam computed tomography evaluation of Pont′s index predictability for Malay population in orthodontics

Cone-beam computed tomography evaluation of Pont′s index predictability for Malay population in orthodontics

A New Anterior and Posterior Maxillary Expansion Index in Orthodontics via Digital Dental Models

Application of Pont’s index to a Pakistani population: a digital stereomicroscopic study

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