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Updated: Feb 10, 2026

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Three-Dimensional Reconstruction of Orbital Fractures
Published on: May 16, 2025
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Horizontal root fractures in posterior teeth: a case series.
Ping Wang1, Haipeng Lv, Hantang Sun
1School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi Province, China.
Summary
This case series observed 12 patients with horizontal root fractures in teeth without prior root canal treatment. Factors like root anatomy, forceful chewing, and occlusal overload may contribute to these non-endodontically treated tooth fractures.
Area of Science:
- Dentistry
- Oral Surgery
- Endodontics
Background:
- Horizontal root fractures are a significant concern in dental diagnostics.
- Understanding the etiology of these fractures in non-endodontically treated teeth is crucial for patient management.
Observation:
- A case series involving 12 patients with horizontal root fractures in non-endodontically treated teeth was analyzed.
- Clinical and radiographic examinations identified fractures primarily in maxillary first molars (palatal roots) and mandibular second premolars.
- Most affected teeth had intact crowns, though some exhibited caries. Pain during mastication was a common symptom.
Findings:
- Horizontal root fractures in non-endodontically treated teeth were observed in various locations, including maxillary molars and mandibular premolars.
- Fracture patterns suggest a predilection for specific root morphologies, such as palatal roots of maxillary molars.
- Patient-reported pain during mastication was a prevalent clinical sign.
Implications:
- Findings suggest that root morphology, detrimental masticatory habits, and excessive occlusal forces are potential contributing factors to horizontal root fractures.
- This study highlights the importance of considering these factors in the diagnosis and management of root fractures in non-endodontically treated teeth.
- Further research is warranted to elucidate the precise mechanisms and risk factors involved.
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