Tooth size discrepancies in Irish orthodontic patients among different malocclusion groups

O'Mahony, Gerard; Millett, Declan T; Barry, Mark K.; McIntyre, Grant T; Cronin, Michael

doi:10.2319/050610-246.1

Cited by 35 publications

(66 citation statements)

References 27 publications

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“…We were unable to find any statistically significant differences in the mean overall and anterior tooth size ratios between the different malocclusion groups. This is in accordance to Uysal and Sari [17] who identified no differences in tooth size ratios between malocclusion groups in a Turkish population, also in accordance to O'Mahony and Millett [11] who identified no statistical difference in tooth size ratios between malocclusion groups in an Irish population, but contrasts with Nie and Lin [12] who identified a higher prevalence of increased overall tooth size ratios in Class III malocclusions compared to Class I and Class II malocclusions in a Chinese population.…”

Section: Discussionsupporting

confidence: 84%

“…Bishara [8] found that males have larger teeth than females. Despite the difference most studies have found that there is little impact of gender on interarch ratios [8][9][10][11][12][13]. Smith et al found that males had a larger ratio than females but the differences were small and much less than one SD from Bolton norms [14].…”

Section: Journal Of Orthodontics and Endodontics Issn 2469-2980mentioning

confidence: 99%

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Tooth Size Discrepancy among Different Malocclusion Groups in a Sudanese Sample

Nm¹,

He²,

Ao³

2017

J Orthod Endod

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Introduction: The standard model of orthodontic treatment can be divided into three different stages as stated by Proffit, namely leveling and alignment, working and finishing phases. Each of these presents different challenges. In particular the final, or "finishing" phase, constitutes the most complicated for the complexity of the various factors that need to be taken into account if an optimum result is to be achieved at the end of treatment. One of these factors, often a primary cause of difficulty, is Tooth Size Discrepancy (TSD). Problems arising from this can be alleviated if the existence of TSD forms part of the initial diagnosis and is considered when formulating a treatment plan for the individual patient.Objectives: The present research aimed at determining the extent and prevalence in a representative orthodontic population in Sudan and to investigate the dimensions of TSD in this population that comprised a clinically significant factor. Materials and methods:The sample comprised 107 pretreatment study casts with fully erupted and complete permanent dentitions from first molar to first molar, which were selected randomly from records of the orthodontic patients. The mesiodistal diameters of the teeth were measured at contact points using a stainless steel digital caliper and Bolton analysis was carried out on them.Results: A clinically and statistically significant anterior TSD (p=0.002) existed in comparison to Bolton's anterior tooth ratio. Measurements of the overall and anterior TSD between malocclusion groups showed no significant differences (P=0.572, P=0.976 respectively). In terms of gender, no significant differences were observed for the overall TSD data (P=0.102). In Class II division 1 mean overall ratio was lower than Bolton's, and Class II division 2 mean overall ratio higher than Bolton's [overall ratio (91.3%, SD ± 2), anterior ratio (77.2, SD ± 2)]. Conclusion:Class II division 1 patients showed a tendency towards excessive maxillary tooth material and Class II division 2 patients showed a tendency towards excessive mandibular tooth material.

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Section: Discussionsupporting

confidence: 84%

Section: Journal Of Orthodontics and Endodontics Issn 2469-2980mentioning

confidence: 99%

Tooth Size Discrepancy among Different Malocclusion Groups in a Sudanese Sample

Nm¹,

He²,

Ao³

2017

J Orthod Endod

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“…To evaluate this relationship, various linear measurements by sliding calipers and digital models have been used 3,14,[16][17][18][19] . Digital dental models were considered as a valid and reliable tool for different tooth size measurements 17,19,20,32) .…”

Section: Discussionmentioning

confidence: 99%

“…Linear measurements have been incorporated into various dental model analyses to help the clinician to measure the tooth size and tooth size discrepancies to establish the most appropriate treatment plan [1][2][3] .…”

Section: Introductionmentioning

confidence: 99%

A New Method to Measure and Assess Tooth Size and Tooth Size Discrepancy Via Circumferential Measurements using Stereomicroscope

Shahid

Alam

Khamis

et al. 2015

J. Hard Tissue Biology.

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An accurate evaluation of tooth size and tooth size discrepancy is critically important in orthodontic diagnosis and treatment planning. The purpose of this study was to establish a new method to measure and assess tooth size and tooth size discrepancy with accuracy and reproducibility, named as circumferential tooth size (CFT), circumferential anterior tooth size ratio (CAR), circumferential overall tooth size ratio (COR) respectively. Total 128 dental models were scanned via Hirox digital stereomicroscope for the fabrication of the digital models. Dental models were selected on the basis of inclusion criteria. All the measurements were obtained with the accuracy of 0.1×10 -6 mm; the mean and the SD for the CFT, CAR and COR were calculated. The developed norms for the CFT, demonstrated significantly greater values for males in relation to females. More precisely, there were statistically significant differences observed in different variables (*p 0.05 to ***p 0.001). CAR and COR ratio show slight greater value for males without any statistically significant differences. The findings provide valuable information that CFT cover the tooth size in all dimensional aspects. For the prediction of ideal occlusion to be achieved at the finishing stage, orthodontist needs to evaluate CAR and COR ratios via proposed method.

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“…Plaster casts, whose importance has been widely supported by many authors, are generally used for the analysis and treatment of agenesis. Currently, the use of three‐dimensional (3D) images of cast models has increasingly become a relevant tool in the diagnostic and treatment of several clinical dental conditions …”

Section: Introductionmentioning

confidence: 99%

Digital Analysis of Anterior Dental Esthetic Parameters in Patients with Bilateral Maxillary Lateral Incisor Agenesis

Pini

De-Marchi

Gribel

et al. 2013

J Esthet Restor Dent

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The digital analysis of esthetic principles, such as those investigated in this study involving maxillary incisor agenesis, is paramount to successful esthetic treatment planning. The results of the present study, as well as those found in the literature, indicate that clinicians should use esthetic parameters, such as those investigated herein, when treatment planning extensive oral rehabilitation cases.

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Tooth size discrepancies in Irish orthodontic patients among different malocclusion groups

Cited by 35 publications

References 27 publications

Tooth Size Discrepancy among Different Malocclusion Groups in a Sudanese Sample

Tooth Size Discrepancy among Different Malocclusion Groups in a Sudanese Sample

A New Method to Measure and Assess Tooth Size and Tooth Size Discrepancy Via Circumferential Measurements using Stereomicroscope

Digital Analysis of Anterior Dental Esthetic Parameters in Patients with Bilateral Maxillary Lateral Incisor Agenesis

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