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KMID : 0362420210590030271
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Journal of Korean Academy of Prosthodontics
2021 Volume.59 No. 3 p.271 ~ p.280
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Analysis of relationship between cracked tooth syndrome and occlusion using Q-ray and T-scan
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Ahn Do-Gwan
Choi Jin-Woo
Kim Yu-Seong
Pyo Se-Wook
Kim Hee-Kyung
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Abstract
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Purpose: The aim of this study was to evaluate the relationship between the patient's occlusion and a cracked tooth by using T-scan occlusal analysis and a quantitative light-induced fluorescence (QLF) technology.
Materials and Methods: This study was carried out on 51 patients having cracked teeth between January, 2019 and December, 2020. The tooth crack was determined with a Q-ray pen and QLF parameters (ΔFmax and ΔRmax) were obtained by a Q-ray software. T-scan tests were conducted to all subjects and then, the occlusal force and disclosing time were analyzed. Mann-Whitney U test was performed to compare the occlusal force and disclosing time between cracked teeth groups and contra-lateral normal teeth groups (α = .05). Mann-Whitney U test was performed to compare ΔFmax and ΔRmax according to the results of cold/bite tests (α = .05). A Spearman correlation analysis was run to determine the relationship between ΔFmax or ΔRmax and occlusal force or disclosing time (α=.05).
Results: The mean occlusal force and disclosing time were significantly higher on cracked teeth than on normal teeth (P < .05). The ΔFmax or ΔRmax were not significantly different according to the results of cold/bite tests (P > .05). There was no correlation between ΔFmax or ΔRmax and occlusal force or disclosing time (P > .05).
Conclusion: There was a significant relationship between occlusion and cracked tooth syndrome. QLF has the potential to be a valuable tool for the diagnosis of tooth crack in clinical practice.
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KEYWORD
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Bite force, Cracked tooth syndrome, Dental occlusion, Fluorescence
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