Objective The research aimed to analyze the significance of Pont Index in the dental crowding.Methods Re- spectively selected 91 normal occlusion persons and 101 dental crowding patients, measured every item of Pont Index of these two sample groups, and compared the results.Results ①The premolar index and molar index of dental crowding patientswere obvi- ously bigger than that of normal occlusion, and there was apparent significant difference.②There was no significant gender differ- ence of Pont Index either in normal occlusion or dental crowding patients. Whereas there was significant gender difference of pre- molar arch width and molar arch width in normal occlusion.Conclusion The occurrence of dental crowding is clearly related to Pont Index.
