Applicability of bolton's analysis to a South Telangana population

Saritha, T; Sunitha, C; Kumar, P Kiran; Naveen, R

doi:10.4103/ijds.ijds_95_17

Cited by 8 publications

(9 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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%

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

Machado¹,

Botelho²,

Mascarenhas³

et al. 2019

J Orthod

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 99%

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

Machado¹,

Botelho²,

Mascarenhas³

et al. 2019

J Orthod

View full text Add to dashboard Cite

show abstract

“…Nevertheless, studies assert that Bolton index can be correlated with the type of malocclusion ( 20 , 27 ). For example, Nie and Lin ( 28 ) measured this in 300 pre-orthodontic subjects according to their Angle malocclusion group.…”

Section: Discussionmentioning

confidence: 99%

Bolton ratios in Portuguese subjects among different malocclusion groups

Machado¹,

Pereira

Vasques

et al. 2018

J Clin Exp Dent

View full text Add to dashboard Cite

BackgroundSeveral methods have been described to estimate inter-arch tooth size relationship, such as Bolton’s ratios. The aims of this study were to verify the validity of Bolton indexes in a sample of untreated Portuguese subjects based on Angle classification and to evaluate the gender difference.Material and Methods168 pre-treatment dental casts of orthodontics Portuguese subjects (59 males and 109 females) with different occlusions were used, which were selected randomly from 541 consecutively treated orthodontic patients. The mesiodistal widths from first molar to first molar were measured on each pre-treatment cast to the nearest 0.01 mm using digital caliper, and Bolton’s anterior and overall ratios were calculated. Descriptive statistics as mean, standard deviation and range were calculated. Moreover, the results were compared to Bolton’s ratios and differences based on gender and occlusion groups were evaluated by statistical inference methods.ResultsThe results reveal that the mean values, standard deviation and range were larger than Bolton’s in normal occlusion group (78.3±3.5% in anterior ratio and 92.1±2.2% in overall ratio) and there were no differences between genders (p >0.05). Class I (anterior and overall ratios, p=0.001 and p<0.001, respectively), Class II/2 (anterior ratio, p=0.032) and Class III (overall ratio, p=0.041) were significantly different from Bolton’s reference data.ConclusionsThe results showed no differences between gender and no difference between normal occlusion and malocclusion groups. Moreover, in normal occlusion group, the anterior and overall tooth size ratios was equivalent to the original Bolton’s ratios, although the mean and standard deviation were large. Key words:Bolton anterior and overall ratios, normal occlusion, malocclusion, portuguese population.

show abstract

“…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%

“…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%

See 1 more Smart Citation

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

Machado¹,

Botelho²,

Mascarenhas³

et al. 2019

Preprint

View full text Add to dashboard Cite

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.

show abstract

Applicability of bolton's analysis to a South Telangana population

Cited by 8 publications

References 1 publication

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

Bolton ratios in Portuguese subjects among different malocclusion groups

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

Contact Info

Product

Resources

About