Seventh key of occlusion: Diagnostic significance in different angle′s class I, II and III malocclusions

Maurya, Raj Kumar; Gupta, Ankur; Garg, Jaishree; Mishra, Harsh Ashok

doi:10.4103/2321-3825.155991

Cited by 3 publications

(6 citation statements)

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“…Among the included studies, no study was of high quality. Moreover, 47 articles presented medium quality, of which 11 articles presented 8 points (Asma, 2013; Bugaighis et al, 2015; Cançado et al, 2015; Celikoglu et al, 2013; Ismail and Abuaffan, 2015; Machado et al, 2018; McSwiney et al, 2014; Nie and Lin, 1999; Shahid et al, 2016; Saritha et al, 2017; Ta et al, 2001) and 39 articles presented 7 points (Al-Duliamy et al, 2016; Al Sulaimani and Afify, 2006; Alkofide and Hashim, 2002; Carreiro et al, 2005; Chugh et al, 2015; Cİğer et al, 2006; Crosby and Alexander, 1989; Elsheikhi et al, 2017; Endo et al, 2007, 2009, 2010; Fernandes et al, 2010; Freire et al, 2007; Hashim et al, 2015; Hyder et al, 2012; Jindal and Bunger, 2013; Jóias and Scanavini, 2011; Jóias et al, 2010; Kansal et al, 2012; Lavelle, 1972; Lee et al, 2011; Lombardo et al, 2016; Machado et al, 2018; Manopatanakul and Watanawirun, 2011; Maurya et al, 2015; Mollabashi et al, 2019; Mulimani et al, 2018; O’Mahony et al, 2011; Oktay and Ulukaya, 2010; Patel et al, 2017; Ricci et al, 2013; Sakoda et al, 2016; Shahid et al, 2016; Shastri et al, 2015; Škrinjarić et al, 2018; Uysal et al, 2005; Vela et al, 2011; Zerouaoui et al, 2014). Five were of low quality (Anil and Mo...…”

Section: Resultsmentioning

confidence: 99%

“…After 1999 larger datasets were published on different continents. Fifty-two crosssectional studies from four different continents, namely Africa (12,30,34,36,(44)(45)(46), Asia (12,24,25,31,32,34,35,37,38,(40)(41)(42)(47)(48)(49)(50)(51)(52)(53)(54)(55)(56)(57)(58), South America (26,33,39,(59)(60)(61)(62)(63)(64)(65)(66), and Europe (12,22,43,(67)(68)(69)(70)(71)(72)…”

Section: Study Characteristicsmentioning

confidence: 99%

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A systematic review and meta-analysis on Bolton’s ratios: Normal occlusion and malocclusion

Machado¹,

Botelho²,

Mascarenhas³

et al. 2019

J Orthod

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Introduction: The purpose of this study was to seek and summarise the Bolton overall index (OI) and anterior index (AI) regarding normal occlusion and Angle’s malocclusion according to gender, and to assess if these indices support Bolton’s standards as general references. Methods: PubMed, LILACS, Embase, CENTRAL and Google Scholar databases were searched up to June 2019 (CRD42018088438). Non-randomised clinical studies, published in English and assessing Bolton’s OI and/or AI in normal occlusion and Angle’s malocclusion groups, were included. OI and AI means, sample size and SDs were collected. The National Heart, Lung, and Blood Institute’s Quality Assessment Tool for Observational Cohort and Cross-Sectional Studies was used to assess the risk of bias. Pairwise random-effects and multilevel Bayesian network meta-analyses were used to synthesise available data. Results: Fifty-three observational studies were included (11,411 participants; 3746 men, 4430 women; 15 studies lacked gender information). For normal occlusion, pooled estimates for OI and AI means were 91.78% (95% confidence interval [CI] = 91.42–92.14; I2 = 92.87%) and 78.25% (95% CI = 77.87–78.62; I2 = 90.67%), respectively. We could identify in Angle’s Class III patients meaningful OI and AI mean deviations from normal occlusion (0.76, 95% credible interval [CrI] = 0.55–0.98 and 0.61, 95% CrI = 0.35–0.87, respectively), while in Class II patients we found a meaningful mean deviation from normal occlusion only for OI (−0.28, 95% CrI = −0.52–−0.05). Concerning gender impact, male patients presented higher OI (0.30, 95% CI = 0.00–0.59) and AI (0.41, 95% CI = 0.00–0.83) mean values than female patients in Class I. Conclusion: Normal occlusion OI and AI mean values differ from Bolton’s original values. Class II division 2, for OI mean values, and Class III, for both OI and AI, are proportionally larger than normal occlusion patients. Gender had almost no impact on teeth mesiodistal proportion.

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Section: Resultsmentioning

confidence: 99%

Section: Study Characteristicsmentioning

confidence: 99%

A systematic review and meta-analysis on Bolton’s ratios: Normal occlusion and malocclusion

Machado¹,

Botelho²,

Mascarenhas³

et al. 2019

J Orthod

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Section: Study Characteristicsmentioning

confidence: 99%

“…Among the included studies, no study presented high quality. Moreover, forty-seven articles presented medium quality, of which eleven articles presented 8 points (30,33,37,43,44,48,52,53,58,67,75), and thirty-six articles presented 7 points (12,22,25,26,31,(34)(35)(36)38,39,42,(45)(46)(47)(48)(49)(50)(51)(54)(55)(56)(57)(59)(60)(61)(62)(63)(64)(65)67,68,(70)(71)(72)76). Five were of low quality (77-81) and, consequently, were excluded.…”

Section: Risk Of Bias Across Studiesmentioning

confidence: 99%

A Systematic Review and Meta-Analysis on Bolton's Ratios: Normal Occlusion and Malocclusion

Machado¹,

Botelho²,

Mascarenhas³

et al. 2019

Preprint

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Introduction: The purposes of this study were to seek for overall ratio (OR) and anterior ratio (AR) patients data in normal occlusion and Angle’s malocclusion studies, and to assess if such results support Bolton’s standards as general references. Methods: Pubmed, Medline, CENTRAL and Scholar databases were searched up to February 2018 (CRD42018088438). Gray literature was explored through OpenGray. Non-randomized clinical studies, published in English and assessing Bolton’s OR and AR in normal occlusion and Angle’s malocclusion groups (Class I, Class II, Class II division 1, Class 2 division 2, Class III) patients were included. OR and AR means and standard deviations (SD) were collected. Potential covariates (study design, publication year, country where the study was conducted, number of cases, gender, mesiodistal measurement method, and calibration method) were also extracted. The National Health Heart Lung, and Blood Institute’s Quality Assessment Tool for Observational Cohort and Cross-Sectional Studies was used to assess each included studies quality. Pairwise Random-Effects and Multilevel Bayesian Network Meta-Analyses were used to synthesize available data. Results: Fifty-two observational studies were included (8872 participants; male/females 2674/3272; 16 studies lacked gender information). For normal occlusion, global pooled estimates for OR and AR means were 91.74% (95% CI: 91.37-92.10) and 78.24% (95% CI: 77.85-78.63), respectively. We could identify on Angle’s Class III patients meaningful OR and AR mean deviations from normal occlusion (0.89, 95% credible interval [CrI], 0.66-1.12, and 0.66, 95% CrI, 0.38-0.94, respectively), while on Class I patients we found a meaningful mean deviation from normal occlusion only for OR (0.25, 95% CrI, 0.03-0.47). Concerning gender impact, male patients presented higher OR (0.30, 95% CI 0.00-0.59) and AR (0.41, 95% CI 0.00-0.83) mean values than females in Class I. Conclusions: The results show that global pooled OR and AR mean values for normal occlusion patients are slightly above Bolton’s original values. Class I, for OR mean values, and Class III, for both OR and AR, are proportionally larger than normal occlusion patients. Gender had almost no impact on teeth mesiodistal proportion.

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“…A significant variation in the harmony of tooth size ratio leads to malocclusion and difficulties in obtaining an occlusion with optimal overjet and overbite. [ 2 ] Overall, this difference in size, stature, and appearance between males and females can be applied to dental tissues to differentiate sex. [ 1 3 ] Mandibular canine index (MCI) is the ratio between the mesiodistal width of lower canine and inter-canine arch width.…”

Section: Introductionmentioning

confidence: 99%

Morphometric significance of maxillary arch in sexual dimorphism in North Indian population

Jakhar

Shende

Maurya

et al. 2017

J Forensic Dent Sci

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Background:Tooth is the hardest and chemically (except mineral contents) the most stable structure in the body, which makes teeth as the first-rate material for genetic and forensic investigations. Sex determination of skeletal remains forms an important part of archaeological and medicolegal examinations. Hence, the aim of the present study was to analyse the morphometric and dimensional variation between male and female in north Indian population using maxillary arch parameters.Materials and Methods:Fifty male and fifty female patients of age group 18–35 years were randomly selected after taking detail history. All maxillary impressions were made with alginate and poured in type III dental stone. These casts were measured for maxillary inter-canine width, maxillary first inter-premolar width, anteroposterior palatal width and palatal depth using a digital vernier caliper and findings were correlated with sexual dimorphism.Results:The maxillary inter-canine width, maxillary first inter-premolar width, and palatal depth showed a significant difference with P < 0.05 between the means of two populations. Anteroposterior palatal width showed the comparatively less significant difference between two populations.Conclusion:Among north Indian population, maxillary inter-canine width, maxillary first inter-premolar width, and palatal depth can be used for sex assessment. The anteroposterior palatal width parameter is comparatively less significant in sex determination.

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Seventh key of occlusion: Diagnostic significance in different angle′s class I, II and III malocclusions

Cited by 3 publications

References 0 publications

A systematic review and meta-analysis on Bolton’s ratios: Normal occlusion and malocclusion

A systematic review and meta-analysis on Bolton’s ratios: Normal occlusion and malocclusion

A Systematic Review and Meta-Analysis on Bolton's Ratios: Normal Occlusion and Malocclusion

Morphometric significance of maxillary arch in sexual dimorphism in North Indian population

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