Clinical observation and analyses of the 146 cracked teeth

Objective:To study the reasons、clinical diagnoses and treatment methods of cracked tooth.Methods:Observing the 146 cracked teeth′s postion in oral cavity the age of the patients and analyzing the clinical symptom.Results:The susceptible age of cracked tooth was foand in 40～60 years old,the mortidity of cracked faeth were the molar,and bicuspid.No cracked tooth was found on incisor and canine.Most of the cracked teeth can be retained by readjusting the occlusion and full crown restored.Conclusion:The cracked tooth is not dental caries illness,the happenning of the cracked tooth is a chronic process,the main treatment are readjusting the occlusion and full crown restoration.