Dental arch dimensions, form and tooth size ratio among a Saudi sample

Omar, Haidi; Alhajrasi, Manar K; Felemban, Nayef H.; Hassan, Ali

doi:10.15537/smj.2018.1.21035

Cited by 39 publications

(37 citation statements)

References 29 publications

(27 reference statements)

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“…[18,19] In the recent study by Omar among a Saudi samples in Class I, Class II, and Class III cases, the most prevalent arch form was narrow tapered, followed by narrow ovoid and the upper arch form did not match the lower arch form, especially in Class II and Class III cases. [20] Tubercle sharp end and incisal edges are used as landmarks in most of the conventional studies, in identifying the arch form. In our study, we used the same technique to determine the anatomy landmarks on study models.…”

Section: Resultsmentioning

confidence: 99%

Correlation of maxillary and mandibular arch form and tooth size ratio in ethnic Javanese malocclusion patient

2019

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IntroductIon Analysis of the study model is one of the undeniable procedures in orthodontic to interpret diagnosis and treatment planning for patients with different malocclusion. The analysis of study model has been used for three-dimensional evaluation in the upper and lower arch forms with the relationship of occlusal which can be calculated by mean of analysis using arch length, arch form dimension, and mesiodistal tooth size. [1,2] Malocclusion can be diagnosed if there is a discrepancy or surplus of tooth material either in maxillary arch form or mandibular arch form. [3,4] According to Bolton, tooth size ratio (TSR) estimation is crucial for treatment planning in orthodontics. [5] Many investigators found that Bolton's ideal TSR is varied and affected by different population, genetic, malocclusion, and gender. [6-9] Shahab et al. found that Bolton's TSR varied among the Turkish population and the most difference was found on the first molar size. [10] Smith et al. found that there was significantly different overall TSR among three different populations which are Hispanics (93.1%), Asian (92.3%), and African (93.4%) that showed interarch tooth size relationships are population specific. [11,12] Kusnoto found that there was difference in the overall and anterior TSR among the Indonesian population and Caucasian population. He found that among the Indonesian population, the Bolton TSR value of 89.7 ± 2.05 for overall ratio and 76.4 ± 2.76 for the anterior ratio is more suitable. [13] The arch form before the treatment is fundamental in orthodontic treatment planning. The pretreatment adjusted through the skeletal base and soft tissues which might be determined by genetic and environmental factors. [14] All the changes during pretreatment should be assessed as amending in Aims: Arch form is one of the important components that can relapse after orthodontic treatment. The relationship is between arch form and tooth size ratio (TSR) need to be evaluated that could help to determine extraction or nonextraction treatment in malocclusion. The aim of this study was to analyze the correlation of maxillary and mandibular arch forms with TSR in ethnic Javanese Malocclusion Patient at Airlangga University Dental Hospital. Materials and Methods: This study was an observational, analytical study with cross-sectional and total sampling method. The samples consisted of 135 model study were chosen according to the inclusion criteria and distributed into malocclusion Class I, Class II, and Class III Angle's classification. All the samples were analyzed using Bolton's anterior and overall ratio, and the maxillary and mandibular arch forms were detected using mathematical ratio using (canine depth/molar depth (MD))/(canine width [CW]/molar width [MW]). Statistical Analysis: The correlation of maxillary and mandibular arch form with clinically significant TSR using Bolton's analysis is interpreted using Pearson correlation test (P < 0.05). Results: No significant correlation of maxillary and mandibular arch forms with TSR using...

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Section: Resultsmentioning

confidence: 99%

Correlation of maxillary and mandibular arch form and tooth size ratio in ethnic Javanese malocclusion patient

2019

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“…12 Tooth widths and arch dimensions are considered significant information by anthropologists, quite apart from their value to orthodontists in understanding dimensional arch criteria and orthodontic archwire selection. 13,14 Dental arch width increases during both the phases of mixed and permanent dentitions, leading to information about the subject's age and body being factors expected to refine arch width estimates. 15 A study of 65 healthy Caucasian children followed from birth to over 25 years of age, including those with malocclusions, found a progressive increase in arch width, especially in males.…”

Section: Introductionmentioning

confidence: 99%

Dental Arch Dimensions and Form in a Sudanese Sample

Saeed¹,

Mageet²

2018

The Journal of Contemporary Dental Practice

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The aim of this study is to determine the dental arch dimensions (width and length) and form in a group of a Sudanese sample population.Background: The size and shape of dental arches have significant implication in orthodontic diagnosis and treatment planning as it affects the space available, dental esthetics and stability of the occlusion. Materials and methods:This study is a biometric analysis of dental casts of 50 adult Sudanese dental students (20 males, 30 females) aged between 19 to 22 years with normal occlusion. The study was conducted at the orthodontic clinics, Faculty of Dentistry, University of Khartoum. Each student was interviewed and written consent was given. The inclusion criteria were: complete permanent dentition fully erupted to the occlusal plane, no proximal caries or restorations, no attrition or dental anomalies, no extractions, no previous or ongoing orthodontic treatment and no fractures or jaw surgeries. Paired-test, ANOVA test, and Pearson's correlation were used for statistical analysis with a p-value set at 0.05. Results:The result showed normal occlusion is higher in males than in females. Upper arch dimensions (width and length) found to be higher in males than females, inter canine width (ICW), males 36, and females 34.45; interpremolar width (IPmW) males 48.08, females 47.58; inter-molar width (IMW) males 53.04, females 52.4; the length for males 37.98 and for females was 37.09. Comparison of Lower arch dimensions between males and females showed ICW (27.08 and 26.86); IPmW (40.97 and 39.67); IMW (45.61 and 45.69); depth was (33.91 and 33.91) consequently. The ovoid-shaped arch form was more common in both genders. Conclusion:Length dimension showed the highest value with square arch form. The width dimensions increase with little change in the inter-canine region but appreciably more in the distal part of the arch. Men have a more massive arch form than females. The ovoid arch form dominates in the Sudanese population.Clinical significance: Knowledge of arch dimensions that are associated with normal occlusion is helpful in determining treatment goals and proper diagnosis and treatment plan by choosing the right arch form for each race.

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“…The observation of this study correlated with the observations made by Omar et al . [ 28 ] All the incisors and canines revealed rectangular and circular shapes, respectively, in cross-sectional view. This finding was similar to that made by Sandeep et al .…”

Section: Discussionmentioning

confidence: 99%

A comparative study of sagittal dental relationship using digital method of bite mark evaluation

Raina¹,

Kulkarni²,

Shah³

2019

J Forensic Dent Sci

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Introduction: Intercuspation of teeth depends on position of teeth and jaws. Bite mark is the resultant of the intercuspation of teeth produced by an individual. Aims and Objective: Comparative evaluation of bite marks in Angle's Class I, II, and III sagittal occlusion. Materials and Methods: Three groups as per Angle's classification-Class I, Class II, and Class III relation were taken. Each group comprised 30 samples each. The dental casts were scanned to create digital images. “IC Measure” software was used to determine the angular and linear measurements on scanned images of study model after calibration. Internal angles of odontometric triangle, intercanine width, shape of the arch, size, and shape of the individual teeth was recorded and subjected to the statistical analysis. Results: All incisors had rectangular and canine had triangular shape. Bilateral maxillary lateral incisors and mandibular left central incisor were significantly small in size for Class III. Square arch form was found more commonly in Class III and ovoid arch form in Class I and Class II occlusion. Intercanine width was insignificant among all occlusions. All the angles of the odontometric triangle in the maxillary and mandibular arches were significant for Class III. Conclusion: Class III occlusion individuals were distinct for shape of the arch and angles of maxillary and mandibular odontometric triangle. The quantified values of odontometric triangle can be utilized for the identification of Class III individuals.

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Dental arch dimensions, form and tooth size ratio among a Saudi sample

Cited by 39 publications

References 29 publications

Correlation of maxillary and mandibular arch form and tooth size ratio in ethnic Javanese malocclusion patient

Correlation of maxillary and mandibular arch form and tooth size ratio in ethnic Javanese malocclusion patient

Dental Arch Dimensions and Form in a Sudanese Sample

A comparative study of sagittal dental relationship using digital method of bite mark evaluation

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