Mandibular Cortical Width on Panoramic Images of Children in the Lao People’s Democratic Republic

Abstract

The purpose of this study was to determine correlations between height and weight with mandibular cortical width (MCW) that may aid identifi cation of bone mineral density (BMD) in a pediatric population. A total of 122 patients (69 boys and 53 girls) aged 4 to 6 years old who were patients at the Dental Hospital of Faculty of Dentistry (UHS, Lao P.D.R.) participated in the study. Anthropometric data of height and weight were recorded. Digital panoramic radiographs were taken and transferred to Nihon University, Tokyo via telemedicine system. MCW was measured using a SDS-DICOM viewer application. The Mann-Whitney U test was performed to analyze MCW gender diff erences. Tukey -Kramer method was performed to determine means of MCW, Height, Weight between each age group. The Pearson's correlation test was performed to analyze the correlation between MCW and Height or Weight. P values less than 0.05 were considered statistically significant. The range of MCW were between 1.40-3.03 mm in males and 1.68-2.80 mm in females, with no sexual diff erences. As age increased, each parameter (MCW, Height, Weight) increased, but no signifi cant diff erence between age groups was detected in MCW. There were positive signifi cant correlations between height and MCW, but not between weight and MCW. This pilot study has shown that MCW does not appear to be a useful indicator for the diagnosis of hidden children osteogenesis. Further studies are needed to examine if other panoramic radiomorphometric indices could be more relevant.

Empirical Study on Medical Information and Communication Technology System in Dentistry in Southeast Asia

“…In 2018, Souksavanh et al established MCW standards for Laotian preschool children (4-6 years) at Vientiane [22]. According to their study, MCW increased slightly with increasing age but had no significant difference between age groups.…”

Measuring panoramic radiomorphometric indices for mandible bone using active shape model and Bayesian information criterion‐support vector machine

“…33 Alternations in the height and width of ramus and condylar process are associated with picking up mandible or pathological event in the TMJ. 34 Different manual and the CAD methods were used for measuring the cortex thickness of the mandible, but they were suffered from some drawbacks such as poor discrimination of the mental foramen area when its image is superimposed via enduring tooth germs in the mixturing teething or when the cortical margin is not obvious in a radiographic manner and the need to manual accompanation for tracing the borders of the cortex, 35 strong influence of the irreducible noises or unadjusted lightness and poor quality radiographs on the continuous measurements, 36 weak accuracy accompanied with losing data of the trimmed mean-based methods and its inappropriateness for different kinds of noisy radiographs as well as dependence of the moment based objects feature classification method to the least distance scale for features and the need to explanatory aspects from basic F I G U R E 1 5 A-F, Scatterplot exhibiting the correlation among gonion angle (GA) and mental index (MI). Panoramic mandibular index (PMI), gonial index (GI), antegonial index (AGI), ramus height (RH), and ramus width (RW) measurements for females in mandible bone features that maybe have been lost were the other disadvantages of the CAD methods.…”

Use of experimental phantoms to determine the accuracy and reliability of mandibular cortical width measurements by panoramic radiography and cone-beam computed tomography

“…This index was introduced as a tool to detect bone mineral loss and is one of the most reliable indices to triage individuals with previously undetected osteopenia or osteoporosis [6,8]. Many reports have shown a correlation of MCW with sex, age, disease stage, and posttherapeutic improvement [9][10][11][12][13]. However, MCW measurements obtained with PR require magnification correction.…”