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[Investigation on relationship between wedge-shaped defects and occlusal interference]
Wen-li Yang1, Xue-feng Lin, Bo Zou
1Dept. of Prosthodontics, Guanghua College of Stomatology, Sun Yat-Sen University, Guangzhou 510055, China.
Summary
Increased occlusal force is linked to wedge-shaped defects. Patients with these defects showed more occlusal interferences, suggesting a connection between bite forces and defect severity.
Area of Science:
- Dental Science
- Biomaterials Science
Background:
- Wedge-shaped defects are noncarious cervical lesions.
- Occlusal interference can contribute to tooth wear and damage.
Purpose of the Study:
- To investigate the relationship between wedge-shaped defects and occlusal interference.
- To determine if occlusal forces influence the formation and severity of these defects.
Main Methods:
- Compared 157 teeth with wedge-shaped defects (experiment group) to 157 adjacent healthy teeth (control group).
- Utilized the T-Scan II system to analyze occlusal force distribution and timing in different jaw movements.
- Evaluated occlusal interference and premature contacts in both groups.
Main Results:
- The experiment group had a significantly higher proportion of occlusal interferences (23.57%) compared to the control group (10.19%).
- Working side interferences were significantly more prevalent in the experiment group (15.92%) than the control group (3.82%).
- Teeth with occlusal interferences exhibited more severe wedge-shaped defects.
Conclusions:
- Increased occlusal force is associated with the development and severity of wedge-shaped defects.
- Occlusal interferences play a role in the etiology of wedge-shaped defects.
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