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Progression of proximal caries in primary molars using the radiographic ICDAS: a retrospective cohort study

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Abstract

Purpose

To evaluate the proximal caries progression in primary molars using the radiographic International Caries Detection and Assessment System (ICDAS).

Methods

A study was conducted on 196 children aged 3–9 years old who underwent the clinical examination and bitewing radiography during baseline and 6-month (and over) follow-up visits. The primary molars bitewing radiographs with initial enamel caries (RA1 and RA2) or outer dentine caries (RA3) of proximal surfaces were included. Caries advancement was scored using ICDAS criteria and statistical analyses with the chi-square test. Median survival time was evaluated using Kaplan–Meier survival curves and log-rank tests.

Results

A total of 439 surfaces of primary molars were included in this study and an averaged follow-up period of enamel and dentine caries group were 18.3 ± 9.6 months and 16.5 ± 9.5 months respectively. The progression of proximal enamel lesions significantly differed between primary maxillary and mandibular molars (p = 0.002) and among each patient’s primary mandibular second molar and the others (p = 0.002). On the contrary, the outer dentine caries of each group of primary molars was not different. The median survival time of the initial enamel proximal caries (23.30 months) was non-significantly longer than that of the dentine (20.80 months).

Conclusions

Progressions of the initial enamel proximal caries were significantly different among primary molars at the average 18.3-month follow-up. The median survival period of the enamel proximal caries was more extended than that of dentine but without statistical difference. These results provide essential information for dentists regarding an appropriate appointment for bitewing examinations.

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Data availability

The datasets used analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgement

The authors are grateful to Associate Professor Thosapol Piyapattamin, Assistant Professor Potjaman Totium, Assistant Professor Sasima Puwanan, Dr. Supanya Naivikul and Assistant Professor Kornchanok Wayakanon for their contribution in this study.

Funding

This research was supported by Faculty of dentistry, Naresuan University.

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Correspondence to R. Sakulratchata.

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This research study was carried out after ethics approval from the Naresuan University Institutional Review Board since 16 June 2020.

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Sakulratchata, R., Saelow, D., Banyat, S. et al. Progression of proximal caries in primary molars using the radiographic ICDAS: a retrospective cohort study. Eur Arch Paediatr Dent (2024). https://doi.org/10.1007/s40368-024-00886-7

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