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Proposed classification for interproximal contacts of primary molars using CBCT: a pilot study
M Kirthiga1, M S Muthu2, G Kayalvizhi1
1Department of Pedodontics and Preventive Dentistry, Indira Gandhi Institute of Dental Sciences, Puducherry, India.
Wellcome Open Research
|October 23, 2018
Summary
This study identified four distinct shapes (O, X, I, S) of interproximal contact areas in primary teeth using cone beam computed tomography (CBCT). The
Area of Science:
- Pediatric Dentistry
- Dental Anatomy
- Radiology
Background:
- Primary teeth exhibit broader, flatter, and more gingival interproximal contacts than permanent teeth.
- Understanding these unique anatomical features is crucial for pediatric dental care.
Purpose of the Study:
- To evaluate and classify the types of intact interproximal contact areas in primary teeth.
- To utilize cone beam computed tomography (CBCT) for a three-dimensional assessment.
Main Methods:
- Cross-sectional study analyzing 74 primary teeth contacts from 28 CBCT scans (children aged 3-14).
- Contact areas were assessed at coronal, middle, and apical thirds in CBCT sections.
- Inter-examiner reliability was established with a weighted Cohen's kappa of 0.893.
Main Results:
- Four types of interproximal contact areas were identified and classified as OXIS (O, X, I, S types).
- The 'I' type was the most prevalent (66.2%), followed by 'X' (21.6%), 'O' (9.4%), and 'S' (2.7%).
Conclusions:
- A three-dimensional classification system (OXIS) for primary molar interproximal contact areas is proposed.
- The study highlights the diverse morphological patterns of these contacts in children.
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