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[Relationship between vertical root fracture and the habits of chewing betel nut]
1Department of Stomatology, Second Xiangya Hospital, Central South University, Changsha 410011.
Objective:
The aim of this article was to study the causes of vertical root fractures.
Methods:
Age and gender, personal history of the sickness and clinical features of vertical root fracture in 27 patients were studied.
Results:
Vertical root fracture tended to occur in patients with a higher mean age (54 years) and were more frequent in male (70%) than in female. Mesial or mesial-buccal roots of the first molars (78%) were the predilection site of vertical root fracture. All of the patients had chewed betel nut for 10 to 25 years. The occlusal surfaces were abrasive.
Conclusion:
Vertical root fracture is associated with an excessive, repetitive, and heavy masticatory stress applied to a tooth.