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Updated: May 22, 2026
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A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth
Published on: April 8, 2020
[Imaging classification of maxillary impacted central incisors].
Xiang-shan Wang1, Rong-dang Hu
1Department of Stomatology, the First People's Hospital of Xiaoshan. Hangzhou, Zhejiang Province, China. wxsdentist@yahoo.cn
Summary
This study proposes a new 3D classification for maxillary impacted central incisors. The system categorizes impactions based on labial, palatal, or vertical positioning, aiding in diagnosis and treatment planning.
Area of Science:
- Dentistry
- Oral and Maxillofacial Surgery
- Radiology
Background:
- Maxillary impacted central incisors are a common clinical concern.
- Accurate classification is crucial for effective treatment planning.
Purpose of the Study:
- To develop a three-dimensional (3D) imaging-based classification system for maxillary impacted central incisors.
- To analyze the characteristics of these impactions using advanced imaging techniques.
Main Methods:
- Reconstruction of 3D images from spiral computed tomography (CT) Dicom data of 103 patients.
- Analysis of impacted maxillary central incisor characteristics using Mimics 10.0 software.
- Development and proposal of a novel classification system based on positional analysis.
Main Results:
- A total of 106 impacted maxillary central incisors were analyzed.
- 74 were labially impacted (33 inverted, 28 horizontal, 13 inclined).
- 20 were palatally impacted (11 inclined, 9 horizontal).
- 12 were vertically impacted within the bone.
- A classification system with three main types (labial, palatal, vertical) and subdivisions was proposed.
Conclusions:
- Maxillary impacted central incisors can be effectively classified into three main 3D categories: labial, palatal, and vertical.
- Subdivisions within these categories (e.g., inclined, horizontal, inverted) provide detailed positional information.
- This classification aids in understanding the spatial orientation of impacted incisors for improved clinical management.
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