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

Abstract

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...

The comparison of maxillary and mandibular dental arch size in male and female Papuan in Surabaya: A cross-sectional study

“…Mesiodistal width of canine, intercanine width, and Maxillary Canine Impaction (MCI) have been used to determine gender in the past and are supported by many researchers. [1], [11] Previous study by Paputungan et al [12] in Mongondow tribes and Alpiah et al [13] in Minahasa tribes about dental arch length and width found the difference result when compared to our study. The different ethnicity and race can affect the dental arch length and width measurement value.…”

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The correlation between Class I, II, III dental and skeletal malocclusion in ethnic Javanese: A cross sectional study

“…Meanwhile, the most common arch form found was square in all three classes of malocclusion, Class I, Class II, and Class III, in the mandibular arch form among ethnic Javanese. [8] Meanwhile, the relationship between dental and skeletal characteristics has been long debated in the field of orthodontics. Some studies say that dental condition is strongly affected by the skeletal of the face.…”